diff --git a/library/x509_crt.c b/library/x509_crt.c
index def1414..9ea96b0 100644
--- a/library/x509_crt.c
+++ b/library/x509_crt.c
@@ -84,17 +84,17 @@
 /*
  * Max size of verification chain: end-entity + intermediates + trusted root
  */
-#define X509_MAX_VERIFY_CHAIN_SIZE    ( MBEDTLS_X509_MAX_INTERMEDIATE_CA + 2 )
+#define X509_MAX_VERIFY_CHAIN_SIZE    (MBEDTLS_X509_MAX_INTERMEDIATE_CA + 2)
 
 /* Default profile. Do not remove items unless there are serious security
  * concerns. */
 const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_default =
 {
     /* Only SHA-2 hashes */
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA224 ) |
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) |
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ) |
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA224) |
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA256) |
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA384) |
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA512),
     0xFFFFFFF, /* Any PK alg    */
     0xFFFFFFF, /* Any curve     */
     2048,
@@ -106,19 +106,19 @@
 const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_next =
 {
     /* Hashes from SHA-256 and above */
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) |
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ) |
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA256) |
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA384) |
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA512),
     0xFFFFFFF, /* Any PK alg    */
 #if defined(MBEDTLS_ECP_C)
     /* Curves at or above 128-bit security level */
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP256R1 ) |
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP384R1 ) |
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP521R1 ) |
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_BP256R1 ) |
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_BP384R1 ) |
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_BP512R1 ) |
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP256K1 ),
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_ECP_DP_SECP256R1) |
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_ECP_DP_SECP384R1) |
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_ECP_DP_SECP521R1) |
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_ECP_DP_BP256R1) |
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_ECP_DP_BP384R1) |
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_ECP_DP_BP512R1) |
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_ECP_DP_SECP256K1),
 #else
     0,
 #endif
@@ -131,15 +131,15 @@
 const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_suiteb =
 {
     /* Only SHA-256 and 384 */
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) |
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ),
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA256) |
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA384),
     /* Only ECDSA */
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_PK_ECDSA ) |
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_PK_ECKEY ),
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_PK_ECDSA) |
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_PK_ECKEY),
 #if defined(MBEDTLS_ECP_C)
     /* Only NIST P-256 and P-384 */
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP256R1 ) |
-    MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP384R1 ),
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_ECP_DP_SECP256R1) |
+    MBEDTLS_X509_ID_FLAG(MBEDTLS_ECP_DP_SECP384R1),
 #else
     0,
 #endif
@@ -150,133 +150,136 @@
  * Check md_alg against profile
  * Return 0 if md_alg is acceptable for this profile, -1 otherwise
  */
-static int x509_profile_check_md_alg( const mbedtls_x509_crt_profile *profile,
-                                      mbedtls_md_type_t md_alg )
+static int x509_profile_check_md_alg(const mbedtls_x509_crt_profile *profile,
+                                     mbedtls_md_type_t md_alg)
 {
-    if( md_alg == MBEDTLS_MD_NONE )
-        return( -1 );
+    if (md_alg == MBEDTLS_MD_NONE) {
+        return -1;
+    }
 
-    if( ( profile->allowed_mds & MBEDTLS_X509_ID_FLAG( md_alg ) ) != 0 )
-        return( 0 );
+    if ((profile->allowed_mds & MBEDTLS_X509_ID_FLAG(md_alg)) != 0) {
+        return 0;
+    }
 
-    return( -1 );
+    return -1;
 }
 
 /*
  * Check pk_alg against profile
  * Return 0 if pk_alg is acceptable for this profile, -1 otherwise
  */
-static int x509_profile_check_pk_alg( const mbedtls_x509_crt_profile *profile,
-                                      mbedtls_pk_type_t pk_alg )
+static int x509_profile_check_pk_alg(const mbedtls_x509_crt_profile *profile,
+                                     mbedtls_pk_type_t pk_alg)
 {
-    if( pk_alg == MBEDTLS_PK_NONE )
-        return( -1 );
+    if (pk_alg == MBEDTLS_PK_NONE) {
+        return -1;
+    }
 
-    if( ( profile->allowed_pks & MBEDTLS_X509_ID_FLAG( pk_alg ) ) != 0 )
-        return( 0 );
+    if ((profile->allowed_pks & MBEDTLS_X509_ID_FLAG(pk_alg)) != 0) {
+        return 0;
+    }
 
-    return( -1 );
+    return -1;
 }
 
 /*
  * Check key against profile
  * Return 0 if pk is acceptable for this profile, -1 otherwise
  */
-static int x509_profile_check_key( const mbedtls_x509_crt_profile *profile,
-                                   const mbedtls_pk_context *pk )
+static int x509_profile_check_key(const mbedtls_x509_crt_profile *profile,
+                                  const mbedtls_pk_context *pk)
 {
-    const mbedtls_pk_type_t pk_alg = mbedtls_pk_get_type( pk );
+    const mbedtls_pk_type_t pk_alg = mbedtls_pk_get_type(pk);
 
 #if defined(MBEDTLS_RSA_C)
-    if( pk_alg == MBEDTLS_PK_RSA || pk_alg == MBEDTLS_PK_RSASSA_PSS )
-    {
-        if( mbedtls_pk_get_bitlen( pk ) >= profile->rsa_min_bitlen )
-            return( 0 );
+    if (pk_alg == MBEDTLS_PK_RSA || pk_alg == MBEDTLS_PK_RSASSA_PSS) {
+        if (mbedtls_pk_get_bitlen(pk) >= profile->rsa_min_bitlen) {
+            return 0;
+        }
 
-        return( -1 );
+        return -1;
     }
 #endif
 
 #if defined(MBEDTLS_ECP_C)
-    if( pk_alg == MBEDTLS_PK_ECDSA ||
+    if (pk_alg == MBEDTLS_PK_ECDSA ||
         pk_alg == MBEDTLS_PK_ECKEY ||
-        pk_alg == MBEDTLS_PK_ECKEY_DH )
-    {
-        const mbedtls_ecp_group_id gid = mbedtls_pk_ec( *pk )->grp.id;
+        pk_alg == MBEDTLS_PK_ECKEY_DH) {
+        const mbedtls_ecp_group_id gid = mbedtls_pk_ec(*pk)->grp.id;
 
-        if( gid == MBEDTLS_ECP_DP_NONE )
-            return( -1 );
+        if (gid == MBEDTLS_ECP_DP_NONE) {
+            return -1;
+        }
 
-        if( ( profile->allowed_curves & MBEDTLS_X509_ID_FLAG( gid ) ) != 0 )
-            return( 0 );
+        if ((profile->allowed_curves & MBEDTLS_X509_ID_FLAG(gid)) != 0) {
+            return 0;
+        }
 
-        return( -1 );
+        return -1;
     }
 #endif
 
-    return( -1 );
+    return -1;
 }
 
 /*
  * Like memcmp, but case-insensitive and always returns -1 if different
  */
-static int x509_memcasecmp( const void *s1, const void *s2, size_t len )
+static int x509_memcasecmp(const void *s1, const void *s2, size_t len)
 {
     size_t i;
     unsigned char diff;
     const unsigned char *n1 = s1, *n2 = s2;
 
-    for( i = 0; i < len; i++ )
-    {
+    for (i = 0; i < len; i++) {
         diff = n1[i] ^ n2[i];
 
-        if( diff == 0 )
-            continue;
-
-        if( diff == 32 &&
-            ( ( n1[i] >= 'a' && n1[i] <= 'z' ) ||
-              ( n1[i] >= 'A' && n1[i] <= 'Z' ) ) )
-        {
+        if (diff == 0) {
             continue;
         }
 
-        return( -1 );
+        if (diff == 32 &&
+            ((n1[i] >= 'a' && n1[i] <= 'z') ||
+             (n1[i] >= 'A' && n1[i] <= 'Z'))) {
+            continue;
+        }
+
+        return -1;
     }
 
-    return( 0 );
+    return 0;
 }
 
 /*
  * Return 0 if name matches wildcard, -1 otherwise
  */
-static int x509_check_wildcard( const char *cn, const mbedtls_x509_buf *name )
+static int x509_check_wildcard(const char *cn, const mbedtls_x509_buf *name)
 {
     size_t i;
-    size_t cn_idx = 0, cn_len = strlen( cn );
+    size_t cn_idx = 0, cn_len = strlen(cn);
 
     /* We can't have a match if there is no wildcard to match */
-    if( name->len < 3 || name->p[0] != '*' || name->p[1] != '.' )
-        return( -1 );
+    if (name->len < 3 || name->p[0] != '*' || name->p[1] != '.') {
+        return -1;
+    }
 
-    for( i = 0; i < cn_len; ++i )
-    {
-        if( cn[i] == '.' )
-        {
+    for (i = 0; i < cn_len; ++i) {
+        if (cn[i] == '.') {
             cn_idx = i;
             break;
         }
     }
 
-    if( cn_idx == 0 )
-        return( -1 );
-
-    if( cn_len - cn_idx == name->len - 1 &&
-        x509_memcasecmp( name->p + 1, cn + cn_idx, name->len - 1 ) == 0 )
-    {
-        return( 0 );
+    if (cn_idx == 0) {
+        return -1;
     }
 
-    return( -1 );
+    if (cn_len - cn_idx == name->len - 1 &&
+        x509_memcasecmp(name->p + 1, cn + cn_idx, name->len - 1) == 0) {
+        return 0;
+    }
+
+    return -1;
 }
 
 /*
@@ -285,24 +288,22 @@
  *
  * Return 0 if equal, -1 otherwise.
  */
-static int x509_string_cmp( const mbedtls_x509_buf *a, const mbedtls_x509_buf *b )
+static int x509_string_cmp(const mbedtls_x509_buf *a, const mbedtls_x509_buf *b)
 {
-    if( a->tag == b->tag &&
+    if (a->tag == b->tag &&
         a->len == b->len &&
-        memcmp( a->p, b->p, b->len ) == 0 )
-    {
-        return( 0 );
+        memcmp(a->p, b->p, b->len) == 0) {
+        return 0;
     }
 
-    if( ( a->tag == MBEDTLS_ASN1_UTF8_STRING || a->tag == MBEDTLS_ASN1_PRINTABLE_STRING ) &&
-        ( b->tag == MBEDTLS_ASN1_UTF8_STRING || b->tag == MBEDTLS_ASN1_PRINTABLE_STRING ) &&
+    if ((a->tag == MBEDTLS_ASN1_UTF8_STRING || a->tag == MBEDTLS_ASN1_PRINTABLE_STRING) &&
+        (b->tag == MBEDTLS_ASN1_UTF8_STRING || b->tag == MBEDTLS_ASN1_PRINTABLE_STRING) &&
         a->len == b->len &&
-        x509_memcasecmp( a->p, b->p, b->len ) == 0 )
-    {
-        return( 0 );
+        x509_memcasecmp(a->p, b->p, b->len) == 0) {
+        return 0;
     }
 
-    return( -1 );
+    return -1;
 }
 
 /*
@@ -315,48 +316,48 @@
  *
  * Return 0 if equal, -1 otherwise.
  */
-static int x509_name_cmp( const mbedtls_x509_name *a, const mbedtls_x509_name *b )
+static int x509_name_cmp(const mbedtls_x509_name *a, const mbedtls_x509_name *b)
 {
     /* Avoid recursion, it might not be optimised by the compiler */
-    while( a != NULL || b != NULL )
-    {
-        if( a == NULL || b == NULL )
-            return( -1 );
+    while (a != NULL || b != NULL) {
+        if (a == NULL || b == NULL) {
+            return -1;
+        }
 
         /* type */
-        if( a->oid.tag != b->oid.tag ||
+        if (a->oid.tag != b->oid.tag ||
             a->oid.len != b->oid.len ||
-            memcmp( a->oid.p, b->oid.p, b->oid.len ) != 0 )
-        {
-            return( -1 );
+            memcmp(a->oid.p, b->oid.p, b->oid.len) != 0) {
+            return -1;
         }
 
         /* value */
-        if( x509_string_cmp( &a->val, &b->val ) != 0 )
-            return( -1 );
+        if (x509_string_cmp(&a->val, &b->val) != 0) {
+            return -1;
+        }
 
         /* structure of the list of sets */
-        if( a->next_merged != b->next_merged )
-            return( -1 );
+        if (a->next_merged != b->next_merged) {
+            return -1;
+        }
 
         a = a->next;
         b = b->next;
     }
 
     /* a == NULL == b */
-    return( 0 );
+    return 0;
 }
 
 /*
  * Reset (init or clear) a verify_chain
  */
 static void x509_crt_verify_chain_reset(
-    mbedtls_x509_crt_verify_chain *ver_chain )
+    mbedtls_x509_crt_verify_chain *ver_chain)
 {
     size_t i;
 
-    for( i = 0; i < MBEDTLS_X509_MAX_VERIFY_CHAIN_SIZE; i++ )
-    {
+    for (i = 0; i < MBEDTLS_X509_MAX_VERIFY_CHAIN_SIZE; i++) {
         ver_chain->items[i].crt = NULL;
         ver_chain->items[i].flags = (uint32_t) -1;
     }
@@ -371,35 +372,36 @@
 /*
  *  Version  ::=  INTEGER  {  v1(0), v2(1), v3(2)  }
  */
-static int x509_get_version( unsigned char **p,
-                             const unsigned char *end,
-                             int *ver )
+static int x509_get_version(unsigned char **p,
+                            const unsigned char *end,
+                            int *ver)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t len;
 
-    if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
-            MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 0 ) ) != 0 )
-    {
-        if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
-        {
+    if ((ret = mbedtls_asn1_get_tag(p, end, &len,
+                                    MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED |
+                                    0)) != 0) {
+        if (ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG) {
             *ver = 0;
-            return( 0 );
+            return 0;
         }
 
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_FORMAT, ret ) );
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_FORMAT, ret);
     }
 
     end = *p + len;
 
-    if( ( ret = mbedtls_asn1_get_int( p, end, ver ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_VERSION, ret ) );
+    if ((ret = mbedtls_asn1_get_int(p, end, ver)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_VERSION, ret);
+    }
 
-    if( *p != end )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_VERSION,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+    if (*p != end) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_VERSION,
+                                 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
+    }
 
-    return( 0 );
+    return 0;
 }
 
 /*
@@ -407,66 +409,72 @@
  *       notBefore      Time,
  *       notAfter       Time }
  */
-static int x509_get_dates( unsigned char **p,
-                           const unsigned char *end,
-                           mbedtls_x509_time *from,
-                           mbedtls_x509_time *to )
+static int x509_get_dates(unsigned char **p,
+                          const unsigned char *end,
+                          mbedtls_x509_time *from,
+                          mbedtls_x509_time *to)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t len;
 
-    if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_DATE, ret ) );
+    if ((ret = mbedtls_asn1_get_tag(p, end, &len,
+                                    MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_DATE, ret);
+    }
 
     end = *p + len;
 
-    if( ( ret = mbedtls_x509_get_time( p, end, from ) ) != 0 )
-        return( ret );
+    if ((ret = mbedtls_x509_get_time(p, end, from)) != 0) {
+        return ret;
+    }
 
-    if( ( ret = mbedtls_x509_get_time( p, end, to ) ) != 0 )
-        return( ret );
+    if ((ret = mbedtls_x509_get_time(p, end, to)) != 0) {
+        return ret;
+    }
 
-    if( *p != end )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_DATE,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+    if (*p != end) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_DATE,
+                                 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
+    }
 
-    return( 0 );
+    return 0;
 }
 
 /*
  * X.509 v2/v3 unique identifier (not parsed)
  */
-static int x509_get_uid( unsigned char **p,
-                         const unsigned char *end,
-                         mbedtls_x509_buf *uid, int n )
+static int x509_get_uid(unsigned char **p,
+                        const unsigned char *end,
+                        mbedtls_x509_buf *uid, int n)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
-    if( *p == end )
-        return( 0 );
+    if (*p == end) {
+        return 0;
+    }
 
     uid->tag = **p;
 
-    if( ( ret = mbedtls_asn1_get_tag( p, end, &uid->len,
-            MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | n ) ) != 0 )
-    {
-        if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
-            return( 0 );
+    if ((ret = mbedtls_asn1_get_tag(p, end, &uid->len,
+                                    MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED |
+                                    n)) != 0) {
+        if (ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG) {
+            return 0;
+        }
 
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_FORMAT, ret ) );
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_FORMAT, ret);
     }
 
     uid->p = *p;
     *p += uid->len;
 
-    return( 0 );
+    return 0;
 }
 
-static int x509_get_basic_constraints( unsigned char **p,
-                                       const unsigned char *end,
-                                       int *ca_istrue,
-                                       int *max_pathlen )
+static int x509_get_basic_constraints(unsigned char **p,
+                                      const unsigned char *end,
+                                      int *ca_istrue,
+                                      int *max_pathlen)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t len;
@@ -479,88 +487,99 @@
     *ca_istrue = 0; /* DEFAULT FALSE */
     *max_pathlen = 0; /* endless */
 
-    if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
-
-    if( *p == end )
-        return( 0 );
-
-    if( ( ret = mbedtls_asn1_get_bool( p, end, ca_istrue ) ) != 0 )
-    {
-        if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
-            ret = mbedtls_asn1_get_int( p, end, ca_istrue );
-
-        if( ret != 0 )
-            return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
-
-        if( *ca_istrue != 0 )
-            *ca_istrue = 1;
+    if ((ret = mbedtls_asn1_get_tag(p, end, &len,
+                                    MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
     }
 
-    if( *p == end )
-        return( 0 );
+    if (*p == end) {
+        return 0;
+    }
 
-    if( ( ret = mbedtls_asn1_get_int( p, end, max_pathlen ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+    if ((ret = mbedtls_asn1_get_bool(p, end, ca_istrue)) != 0) {
+        if (ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG) {
+            ret = mbedtls_asn1_get_int(p, end, ca_istrue);
+        }
 
-    if( *p != end )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+        if (ret != 0) {
+            return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+        }
+
+        if (*ca_istrue != 0) {
+            *ca_istrue = 1;
+        }
+    }
+
+    if (*p == end) {
+        return 0;
+    }
+
+    if ((ret = mbedtls_asn1_get_int(p, end, max_pathlen)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+    }
+
+    if (*p != end) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
+    }
 
     /* Do not accept max_pathlen equal to INT_MAX to avoid a signed integer
      * overflow, which is an undefined behavior. */
-    if( *max_pathlen == INT_MAX )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                MBEDTLS_ERR_ASN1_INVALID_LENGTH ) );
+    if (*max_pathlen == INT_MAX) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                 MBEDTLS_ERR_ASN1_INVALID_LENGTH);
+    }
 
     (*max_pathlen)++;
 
-    return( 0 );
+    return 0;
 }
 
-static int x509_get_ns_cert_type( unsigned char **p,
-                                       const unsigned char *end,
-                                       unsigned char *ns_cert_type)
+static int x509_get_ns_cert_type(unsigned char **p,
+                                 const unsigned char *end,
+                                 unsigned char *ns_cert_type)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     mbedtls_x509_bitstring bs = { 0, 0, NULL };
 
-    if( ( ret = mbedtls_asn1_get_bitstring( p, end, &bs ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+    if ((ret = mbedtls_asn1_get_bitstring(p, end, &bs)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+    }
 
-    if( bs.len != 1 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                MBEDTLS_ERR_ASN1_INVALID_LENGTH ) );
+    if (bs.len != 1) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                 MBEDTLS_ERR_ASN1_INVALID_LENGTH);
+    }
 
     /* Get actual bitstring */
     *ns_cert_type = *bs.p;
-    return( 0 );
+    return 0;
 }
 
-static int x509_get_key_usage( unsigned char **p,
-                               const unsigned char *end,
-                               unsigned int *key_usage)
+static int x509_get_key_usage(unsigned char **p,
+                              const unsigned char *end,
+                              unsigned int *key_usage)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t i;
     mbedtls_x509_bitstring bs = { 0, 0, NULL };
 
-    if( ( ret = mbedtls_asn1_get_bitstring( p, end, &bs ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+    if ((ret = mbedtls_asn1_get_bitstring(p, end, &bs)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+    }
 
-    if( bs.len < 1 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                MBEDTLS_ERR_ASN1_INVALID_LENGTH ) );
+    if (bs.len < 1) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                 MBEDTLS_ERR_ASN1_INVALID_LENGTH);
+    }
 
     /* Get actual bitstring */
     *key_usage = 0;
-    for( i = 0; i < bs.len && i < sizeof( unsigned int ); i++ )
-    {
+    for (i = 0; i < bs.len && i < sizeof(unsigned int); i++) {
         *key_usage |= (unsigned int) bs.p[i] << (8*i);
     }
 
-    return( 0 );
+    return 0;
 }
 
 /*
@@ -568,21 +587,23 @@
  *
  * KeyPurposeId ::= OBJECT IDENTIFIER
  */
-static int x509_get_ext_key_usage( unsigned char **p,
-                               const unsigned char *end,
-                               mbedtls_x509_sequence *ext_key_usage)
+static int x509_get_ext_key_usage(unsigned char **p,
+                                  const unsigned char *end,
+                                  mbedtls_x509_sequence *ext_key_usage)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
-    if( ( ret = mbedtls_asn1_get_sequence_of( p, end, ext_key_usage, MBEDTLS_ASN1_OID ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+    if ((ret = mbedtls_asn1_get_sequence_of(p, end, ext_key_usage, MBEDTLS_ASN1_OID)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+    }
 
     /* Sequence length must be >= 1 */
-    if( ext_key_usage->buf.p == NULL )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                MBEDTLS_ERR_ASN1_INVALID_LENGTH ) );
+    if (ext_key_usage->buf.p == NULL) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                 MBEDTLS_ERR_ASN1_INVALID_LENGTH);
+    }
 
-    return( 0 );
+    return 0;
 }
 
 /*
@@ -612,9 +633,9 @@
  * NOTE: we list all types, but only use dNSName and otherName
  * of type HwModuleName, as defined in RFC 4108, at this point.
  */
-static int x509_get_subject_alt_name( unsigned char **p,
-                                      const unsigned char *end,
-                                      mbedtls_x509_sequence *subject_alt_name )
+static int x509_get_subject_alt_name(unsigned char **p,
+                                     const unsigned char *end,
+                                     mbedtls_x509_sequence *subject_alt_name)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t len, tag_len;
@@ -623,66 +644,66 @@
     mbedtls_asn1_sequence *cur = subject_alt_name;
 
     /* Get main sequence tag */
-    if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+    if ((ret = mbedtls_asn1_get_tag(p, end, &len,
+                                    MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+    }
 
-    if( *p + len != end )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+    if (*p + len != end) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
+    }
 
-    while( *p < end )
-    {
+    while (*p < end) {
         mbedtls_x509_subject_alternative_name dummy_san_buf;
-        memset( &dummy_san_buf, 0, sizeof( dummy_san_buf ) );
+        memset(&dummy_san_buf, 0, sizeof(dummy_san_buf));
 
         tag = **p;
         (*p)++;
-        if( ( ret = mbedtls_asn1_get_len( p, end, &tag_len ) ) != 0 )
-            return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+        if ((ret = mbedtls_asn1_get_len(p, end, &tag_len)) != 0) {
+            return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+        }
 
-        if( ( tag & MBEDTLS_ASN1_TAG_CLASS_MASK ) !=
-                MBEDTLS_ASN1_CONTEXT_SPECIFIC )
-        {
-            return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                    MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ) );
+        if ((tag & MBEDTLS_ASN1_TAG_CLASS_MASK) !=
+            MBEDTLS_ASN1_CONTEXT_SPECIFIC) {
+            return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                     MBEDTLS_ERR_ASN1_UNEXPECTED_TAG);
         }
 
         /*
          * Check that the SAN is structured correctly.
          */
-        ret = mbedtls_x509_parse_subject_alt_name( &(cur->buf), &dummy_san_buf );
+        ret = mbedtls_x509_parse_subject_alt_name(&(cur->buf), &dummy_san_buf);
         /*
          * In case the extension is malformed, return an error,
          * and clear the allocated sequences.
          */
-        if( ret != 0 && ret != MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE )
-        {
+        if (ret != 0 && ret != MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE) {
             mbedtls_x509_sequence *seq_cur = subject_alt_name->next;
             mbedtls_x509_sequence *seq_prv;
-            while( seq_cur != NULL )
-            {
+            while (seq_cur != NULL) {
                 seq_prv = seq_cur;
                 seq_cur = seq_cur->next;
-                mbedtls_platform_zeroize( seq_prv,
-                                          sizeof( mbedtls_x509_sequence ) );
-                mbedtls_free( seq_prv );
+                mbedtls_platform_zeroize(seq_prv,
+                                         sizeof(mbedtls_x509_sequence));
+                mbedtls_free(seq_prv);
             }
             subject_alt_name->next = NULL;
-            return( ret );
+            return ret;
         }
 
         /* Allocate and assign next pointer */
-        if( cur->buf.p != NULL )
-        {
-            if( cur->next != NULL )
-                return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS );
+        if (cur->buf.p != NULL) {
+            if (cur->next != NULL) {
+                return MBEDTLS_ERR_X509_INVALID_EXTENSIONS;
+            }
 
-            cur->next = mbedtls_calloc( 1, sizeof( mbedtls_asn1_sequence ) );
+            cur->next = mbedtls_calloc(1, sizeof(mbedtls_asn1_sequence));
 
-            if( cur->next == NULL )
-                return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                        MBEDTLS_ERR_ASN1_ALLOC_FAILED ) );
+            if (cur->next == NULL) {
+                return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                         MBEDTLS_ERR_ASN1_ALLOC_FAILED);
+            }
 
             cur = cur->next;
         }
@@ -697,11 +718,12 @@
     /* Set final sequence entry's next pointer to NULL */
     cur->next = NULL;
 
-    if( *p != end )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+    if (*p != end) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
+    }
 
-    return( 0 );
+    return 0;
 }
 
 /*
@@ -753,9 +775,9 @@
  * NOTE: we only parse and use anyPolicy without qualifiers at this point
  * as defined in RFC 5280.
  */
-static int x509_get_certificate_policies( unsigned char **p,
-                                          const unsigned char *end,
-                                          mbedtls_x509_sequence *certificate_policies )
+static int x509_get_certificate_policies(unsigned char **p,
+                                         const unsigned char *end,
+                                         mbedtls_x509_sequence *certificate_policies)
 {
     int ret, parse_ret = 0;
     size_t len;
@@ -763,39 +785,43 @@
     mbedtls_asn1_sequence *cur = certificate_policies;
 
     /* Get main sequence tag */
-    ret = mbedtls_asn1_get_tag( p, end, &len,
-                             MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE );
-    if( ret != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+    ret = mbedtls_asn1_get_tag(p, end, &len,
+                               MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE);
+    if (ret != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+    }
 
-    if( *p + len != end )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+    if (*p + len != end) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
+    }
 
     /*
      * Cannot be an empty sequence.
      */
-    if( len == 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+    if (len == 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
+    }
 
-    while( *p < end )
-    {
+    while (*p < end) {
         mbedtls_x509_buf policy_oid;
         const unsigned char *policy_end;
 
         /*
          * Get the policy sequence
          */
-        if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
-                MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-            return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+        if ((ret = mbedtls_asn1_get_tag(p, end, &len,
+                                        MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) != 0) {
+            return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+        }
 
         policy_end = *p + len;
 
-        if( ( ret = mbedtls_asn1_get_tag( p, policy_end, &len,
-                                          MBEDTLS_ASN1_OID ) ) != 0 )
-            return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+        if ((ret = mbedtls_asn1_get_tag(p, policy_end, &len,
+                                        MBEDTLS_ASN1_OID)) != 0) {
+            return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+        }
 
         policy_oid.tag = MBEDTLS_ASN1_OID;
         policy_oid.len = len;
@@ -804,8 +830,7 @@
         /*
          * Only AnyPolicy is currently supported when enforcing policy.
          */
-        if( MBEDTLS_OID_CMP( MBEDTLS_OID_ANY_POLICY, &policy_oid ) != 0 )
-        {
+        if (MBEDTLS_OID_CMP(MBEDTLS_OID_ANY_POLICY, &policy_oid) != 0) {
             /*
              * Set the parsing return code but continue parsing, in case this
              * extension is critical and MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
@@ -815,135 +840,144 @@
         }
 
         /* Allocate and assign next pointer */
-        if( cur->buf.p != NULL )
-        {
-            if( cur->next != NULL )
-                return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS );
+        if (cur->buf.p != NULL) {
+            if (cur->next != NULL) {
+                return MBEDTLS_ERR_X509_INVALID_EXTENSIONS;
+            }
 
-            cur->next = mbedtls_calloc( 1, sizeof( mbedtls_asn1_sequence ) );
+            cur->next = mbedtls_calloc(1, sizeof(mbedtls_asn1_sequence));
 
-            if( cur->next == NULL )
-                return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                        MBEDTLS_ERR_ASN1_ALLOC_FAILED ) );
+            if (cur->next == NULL) {
+                return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                         MBEDTLS_ERR_ASN1_ALLOC_FAILED);
+            }
 
             cur = cur->next;
         }
 
-        buf = &( cur->buf );
+        buf = &(cur->buf);
         buf->tag = policy_oid.tag;
         buf->p = policy_oid.p;
         buf->len = policy_oid.len;
 
         *p += len;
 
-       /*
-        * If there is an optional qualifier, then *p < policy_end
-        * Check the Qualifier len to verify it doesn't exceed policy_end.
-        */
-        if( *p < policy_end )
-        {
-            if( ( ret = mbedtls_asn1_get_tag( p, policy_end, &len,
-                     MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-                return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+        /*
+         * If there is an optional qualifier, then *p < policy_end
+         * Check the Qualifier len to verify it doesn't exceed policy_end.
+         */
+        if (*p < policy_end) {
+            if ((ret = mbedtls_asn1_get_tag(p, policy_end, &len,
+                                            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) !=
+                0) {
+                return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+            }
             /*
              * Skip the optional policy qualifiers.
              */
             *p += len;
         }
 
-        if( *p != policy_end )
-            return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                    MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+        if (*p != policy_end) {
+            return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                     MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
+        }
     }
 
     /* Set final sequence entry's next pointer to NULL */
     cur->next = NULL;
 
-    if( *p != end )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+    if (*p != end) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
+    }
 
-    return( parse_ret );
+    return parse_ret;
 }
 
 /*
  * X.509 v3 extensions
  *
  */
-static int x509_get_crt_ext( unsigned char **p,
-                             const unsigned char *end,
-                             mbedtls_x509_crt *crt,
-                             mbedtls_x509_crt_ext_cb_t cb,
-                             void *p_ctx )
+static int x509_get_crt_ext(unsigned char **p,
+                            const unsigned char *end,
+                            mbedtls_x509_crt *crt,
+                            mbedtls_x509_crt_ext_cb_t cb,
+                            void *p_ctx)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t len;
     unsigned char *end_ext_data, *start_ext_octet, *end_ext_octet;
 
-    if( *p == end )
-        return( 0 );
+    if (*p == end) {
+        return 0;
+    }
 
-    if( ( ret = mbedtls_x509_get_ext( p, end, &crt->v3_ext, 3 ) ) != 0 )
-        return( ret );
+    if ((ret = mbedtls_x509_get_ext(p, end, &crt->v3_ext, 3)) != 0) {
+        return ret;
+    }
 
     end = crt->v3_ext.p + crt->v3_ext.len;
-    while( *p < end )
-    {
+    while (*p < end) {
         /*
          * Extension  ::=  SEQUENCE  {
          *      extnID      OBJECT IDENTIFIER,
          *      critical    BOOLEAN DEFAULT FALSE,
          *      extnValue   OCTET STRING  }
          */
-        mbedtls_x509_buf extn_oid = {0, 0, NULL};
+        mbedtls_x509_buf extn_oid = { 0, 0, NULL };
         int is_critical = 0; /* DEFAULT FALSE */
         int ext_type = 0;
 
-        if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
-                MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-            return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+        if ((ret = mbedtls_asn1_get_tag(p, end, &len,
+                                        MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) != 0) {
+            return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+        }
 
         end_ext_data = *p + len;
 
         /* Get extension ID */
-        if( ( ret = mbedtls_asn1_get_tag( p, end_ext_data, &extn_oid.len,
-                                          MBEDTLS_ASN1_OID ) ) != 0 )
-            return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+        if ((ret = mbedtls_asn1_get_tag(p, end_ext_data, &extn_oid.len,
+                                        MBEDTLS_ASN1_OID)) != 0) {
+            return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+        }
 
         extn_oid.tag = MBEDTLS_ASN1_OID;
         extn_oid.p = *p;
         *p += extn_oid.len;
 
         /* Get optional critical */
-        if( ( ret = mbedtls_asn1_get_bool( p, end_ext_data, &is_critical ) ) != 0 &&
-            ( ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ) )
-            return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+        if ((ret = mbedtls_asn1_get_bool(p, end_ext_data, &is_critical)) != 0 &&
+            (ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG)) {
+            return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+        }
 
         /* Data should be octet string type */
-        if( ( ret = mbedtls_asn1_get_tag( p, end_ext_data, &len,
-                MBEDTLS_ASN1_OCTET_STRING ) ) != 0 )
-            return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+        if ((ret = mbedtls_asn1_get_tag(p, end_ext_data, &len,
+                                        MBEDTLS_ASN1_OCTET_STRING)) != 0) {
+            return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+        }
 
         start_ext_octet = *p;
         end_ext_octet = *p + len;
 
-        if( end_ext_octet != end_ext_data )
-            return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                    MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+        if (end_ext_octet != end_ext_data) {
+            return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                     MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
+        }
 
         /*
          * Detect supported extensions
          */
-        ret = mbedtls_oid_get_x509_ext_type( &extn_oid, &ext_type );
+        ret = mbedtls_oid_get_x509_ext_type(&extn_oid, &ext_type);
 
-        if( ret != 0 )
-        {
+        if (ret != 0) {
             /* Give the callback (if any) a chance to handle the extension */
-            if( cb != NULL )
-            {
-                ret = cb( p_ctx, crt, &extn_oid, is_critical, *p, end_ext_octet );
-                if( ret != 0 && is_critical )
-                    return( ret );
+            if (cb != NULL) {
+                ret = cb(p_ctx, crt, &extn_oid, is_critical, *p, end_ext_octet);
+                if (ret != 0 && is_critical) {
+                    return ret;
+                }
                 *p = end_ext_octet;
                 continue;
             }
@@ -952,136 +986,143 @@
             *p = end_ext_octet;
 
 #if !defined(MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION)
-            if( is_critical )
-            {
+            if (is_critical) {
                 /* Data is marked as critical: fail */
-                return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                        MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ) );
+                return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                         MBEDTLS_ERR_ASN1_UNEXPECTED_TAG);
             }
 #endif
             continue;
         }
 
         /* Forbid repeated extensions */
-        if( ( crt->ext_types & ext_type ) != 0 )
-            return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS );
+        if ((crt->ext_types & ext_type) != 0) {
+            return MBEDTLS_ERR_X509_INVALID_EXTENSIONS;
+        }
 
         crt->ext_types |= ext_type;
 
-        switch( ext_type )
-        {
-        case MBEDTLS_X509_EXT_BASIC_CONSTRAINTS:
-            /* Parse basic constraints */
-            if( ( ret = x509_get_basic_constraints( p, end_ext_octet,
-                    &crt->ca_istrue, &crt->max_pathlen ) ) != 0 )
-                return( ret );
-            break;
+        switch (ext_type) {
+            case MBEDTLS_X509_EXT_BASIC_CONSTRAINTS:
+                /* Parse basic constraints */
+                if ((ret = x509_get_basic_constraints(p, end_ext_octet,
+                                                      &crt->ca_istrue, &crt->max_pathlen)) != 0) {
+                    return ret;
+                }
+                break;
 
-        case MBEDTLS_X509_EXT_KEY_USAGE:
-            /* Parse key usage */
-            if( ( ret = x509_get_key_usage( p, end_ext_octet,
-                    &crt->key_usage ) ) != 0 )
-                return( ret );
-            break;
+            case MBEDTLS_X509_EXT_KEY_USAGE:
+                /* Parse key usage */
+                if ((ret = x509_get_key_usage(p, end_ext_octet,
+                                              &crt->key_usage)) != 0) {
+                    return ret;
+                }
+                break;
 
-        case MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE:
-            /* Parse extended key usage */
-            if( ( ret = x509_get_ext_key_usage( p, end_ext_octet,
-                    &crt->ext_key_usage ) ) != 0 )
-                return( ret );
-            break;
+            case MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE:
+                /* Parse extended key usage */
+                if ((ret = x509_get_ext_key_usage(p, end_ext_octet,
+                                                  &crt->ext_key_usage)) != 0) {
+                    return ret;
+                }
+                break;
 
-        case MBEDTLS_X509_EXT_SUBJECT_ALT_NAME:
-            /* Parse subject alt name */
-            if( ( ret = x509_get_subject_alt_name( p, end_ext_octet,
-                    &crt->subject_alt_names ) ) != 0 )
-                return( ret );
-            break;
+            case MBEDTLS_X509_EXT_SUBJECT_ALT_NAME:
+                /* Parse subject alt name */
+                if ((ret = x509_get_subject_alt_name(p, end_ext_octet,
+                                                     &crt->subject_alt_names)) != 0) {
+                    return ret;
+                }
+                break;
 
-        case MBEDTLS_X509_EXT_NS_CERT_TYPE:
-            /* Parse netscape certificate type */
-            if( ( ret = x509_get_ns_cert_type( p, end_ext_octet,
-                    &crt->ns_cert_type ) ) != 0 )
-                return( ret );
-            break;
+            case MBEDTLS_X509_EXT_NS_CERT_TYPE:
+                /* Parse netscape certificate type */
+                if ((ret = x509_get_ns_cert_type(p, end_ext_octet,
+                                                 &crt->ns_cert_type)) != 0) {
+                    return ret;
+                }
+                break;
 
-        case MBEDTLS_OID_X509_EXT_CERTIFICATE_POLICIES:
-            /* Parse certificate policies type */
-            if( ( ret = x509_get_certificate_policies( p, end_ext_octet,
-                    &crt->certificate_policies ) ) != 0 )
-            {
-                /* Give the callback (if any) a chance to handle the extension
-                 * if it contains unsupported policies */
-                if( ret == MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE && cb != NULL &&
-                    cb( p_ctx, crt, &extn_oid, is_critical,
-                        start_ext_octet, end_ext_octet ) == 0 )
-                    break;
+            case MBEDTLS_OID_X509_EXT_CERTIFICATE_POLICIES:
+                /* Parse certificate policies type */
+                if ((ret = x509_get_certificate_policies(p, end_ext_octet,
+                                                         &crt->certificate_policies)) != 0) {
+                    /* Give the callback (if any) a chance to handle the extension
+                     * if it contains unsupported policies */
+                    if (ret == MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE && cb != NULL &&
+                        cb(p_ctx, crt, &extn_oid, is_critical,
+                           start_ext_octet, end_ext_octet) == 0) {
+                        break;
+                    }
 
 #if !defined(MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION)
-                if( is_critical )
-                    return( ret );
-                else
+                    if (is_critical) {
+                        return ret;
+                    } else
 #endif
-                /*
-                 * If MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE is returned, then we
-                 * cannot interpret or enforce the policy. However, it is up to
-                 * the user to choose how to enforce the policies,
-                 * unless the extension is critical.
-                 */
-                if( ret != MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE )
-                    return( ret );
-            }
-            break;
+                    /*
+                     * If MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE is returned, then we
+                     * cannot interpret or enforce the policy. However, it is up to
+                     * the user to choose how to enforce the policies,
+                     * unless the extension is critical.
+                     */
+                    if (ret != MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE) {
+                        return ret;
+                    }
+                }
+                break;
 
-        default:
-            /*
-             * If this is a non-critical extension, which the oid layer
-             * supports, but there isn't an x509 parser for it,
-             * skip the extension.
-             */
+            default:
+                /*
+                 * If this is a non-critical extension, which the oid layer
+                 * supports, but there isn't an x509 parser for it,
+                 * skip the extension.
+                 */
 #if !defined(MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION)
-            if( is_critical )
-                return( MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE );
-            else
+                if (is_critical) {
+                    return MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE;
+                } else
 #endif
                 *p = end_ext_octet;
         }
     }
 
-    if( *p != end )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+    if (*p != end) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
+    }
 
-    return( 0 );
+    return 0;
 }
 
 /*
  * Parse and fill a single X.509 certificate in DER format
  */
-static int x509_crt_parse_der_core( mbedtls_x509_crt *crt,
-                                    const unsigned char *buf,
-                                    size_t buflen,
-                                    int make_copy,
-                                    mbedtls_x509_crt_ext_cb_t cb,
-                                    void *p_ctx )
+static int x509_crt_parse_der_core(mbedtls_x509_crt *crt,
+                                   const unsigned char *buf,
+                                   size_t buflen,
+                                   int make_copy,
+                                   mbedtls_x509_crt_ext_cb_t cb,
+                                   void *p_ctx)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t len;
     unsigned char *p, *end, *crt_end;
     mbedtls_x509_buf sig_params1, sig_params2, sig_oid2;
 
-    memset( &sig_params1, 0, sizeof( mbedtls_x509_buf ) );
-    memset( &sig_params2, 0, sizeof( mbedtls_x509_buf ) );
-    memset( &sig_oid2, 0, sizeof( mbedtls_x509_buf ) );
+    memset(&sig_params1, 0, sizeof(mbedtls_x509_buf));
+    memset(&sig_params2, 0, sizeof(mbedtls_x509_buf));
+    memset(&sig_oid2, 0, sizeof(mbedtls_x509_buf));
 
     /*
      * Check for valid input
      */
-    if( crt == NULL || buf == NULL )
-        return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
+    if (crt == NULL || buf == NULL) {
+        return MBEDTLS_ERR_X509_BAD_INPUT_DATA;
+    }
 
     /* Use the original buffer until we figure out actual length. */
-    p = (unsigned char*) buf;
+    p = (unsigned char *) buf;
     len = buflen;
     end = p + len;
 
@@ -1091,31 +1132,28 @@
      *      signatureAlgorithm   AlgorithmIdentifier,
      *      signatureValue       BIT STRING  }
      */
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-    {
-        mbedtls_x509_crt_free( crt );
-        return( MBEDTLS_ERR_X509_INVALID_FORMAT );
+    if ((ret = mbedtls_asn1_get_tag(&p, end, &len,
+                                    MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) != 0) {
+        mbedtls_x509_crt_free(crt);
+        return MBEDTLS_ERR_X509_INVALID_FORMAT;
     }
 
     end = crt_end = p + len;
     crt->raw.len = crt_end - buf;
-    if( make_copy != 0 )
-    {
+    if (make_copy != 0) {
         /* Create and populate a new buffer for the raw field. */
-        crt->raw.p = p = mbedtls_calloc( 1, crt->raw.len );
-        if( crt->raw.p == NULL )
-            return( MBEDTLS_ERR_X509_ALLOC_FAILED );
+        crt->raw.p = p = mbedtls_calloc(1, crt->raw.len);
+        if (crt->raw.p == NULL) {
+            return MBEDTLS_ERR_X509_ALLOC_FAILED;
+        }
 
-        memcpy( crt->raw.p, buf, crt->raw.len );
+        memcpy(crt->raw.p, buf, crt->raw.len);
         crt->own_buffer = 1;
 
         p += crt->raw.len - len;
         end = crt_end = p + len;
-    }
-    else
-    {
-        crt->raw.p = (unsigned char*) buf;
+    } else {
+        crt->raw.p = (unsigned char *) buf;
         crt->own_buffer = 0;
     }
 
@@ -1124,11 +1162,10 @@
      */
     crt->tbs.p = p;
 
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-    {
-        mbedtls_x509_crt_free( crt );
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_FORMAT, ret ) );
+    if ((ret = mbedtls_asn1_get_tag(&p, end, &len,
+                                    MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) != 0) {
+        mbedtls_x509_crt_free(crt);
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_FORMAT, ret);
     }
 
     end = p + len;
@@ -1141,29 +1178,26 @@
      *
      * signature            AlgorithmIdentifier
      */
-    if( ( ret = x509_get_version(  &p, end, &crt->version  ) ) != 0 ||
-        ( ret = mbedtls_x509_get_serial(   &p, end, &crt->serial   ) ) != 0 ||
-        ( ret = mbedtls_x509_get_alg(      &p, end, &crt->sig_oid,
-                                            &sig_params1 ) ) != 0 )
-    {
-        mbedtls_x509_crt_free( crt );
-        return( ret );
+    if ((ret = x509_get_version(&p, end, &crt->version)) != 0 ||
+        (ret = mbedtls_x509_get_serial(&p, end, &crt->serial)) != 0 ||
+        (ret = mbedtls_x509_get_alg(&p, end, &crt->sig_oid,
+                                    &sig_params1)) != 0) {
+        mbedtls_x509_crt_free(crt);
+        return ret;
     }
 
-    if( crt->version < 0 || crt->version > 2 )
-    {
-        mbedtls_x509_crt_free( crt );
-        return( MBEDTLS_ERR_X509_UNKNOWN_VERSION );
+    if (crt->version < 0 || crt->version > 2) {
+        mbedtls_x509_crt_free(crt);
+        return MBEDTLS_ERR_X509_UNKNOWN_VERSION;
     }
 
     crt->version++;
 
-    if( ( ret = mbedtls_x509_get_sig_alg( &crt->sig_oid, &sig_params1,
-                                  &crt->sig_md, &crt->sig_pk,
-                                  &crt->sig_opts ) ) != 0 )
-    {
-        mbedtls_x509_crt_free( crt );
-        return( ret );
+    if ((ret = mbedtls_x509_get_sig_alg(&crt->sig_oid, &sig_params1,
+                                        &crt->sig_md, &crt->sig_pk,
+                                        &crt->sig_opts)) != 0) {
+        mbedtls_x509_crt_free(crt);
+        return ret;
     }
 
     /*
@@ -1171,17 +1205,15 @@
      */
     crt->issuer_raw.p = p;
 
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-    {
-        mbedtls_x509_crt_free( crt );
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_FORMAT, ret ) );
+    if ((ret = mbedtls_asn1_get_tag(&p, end, &len,
+                                    MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) != 0) {
+        mbedtls_x509_crt_free(crt);
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_FORMAT, ret);
     }
 
-    if( ( ret = mbedtls_x509_get_name( &p, p + len, &crt->issuer ) ) != 0 )
-    {
-        mbedtls_x509_crt_free( crt );
-        return( ret );
+    if ((ret = mbedtls_x509_get_name(&p, p + len, &crt->issuer)) != 0) {
+        mbedtls_x509_crt_free(crt);
+        return ret;
     }
 
     crt->issuer_raw.len = p - crt->issuer_raw.p;
@@ -1192,11 +1224,10 @@
      *      notAfter       Time }
      *
      */
-    if( ( ret = x509_get_dates( &p, end, &crt->valid_from,
-                                         &crt->valid_to ) ) != 0 )
-    {
-        mbedtls_x509_crt_free( crt );
-        return( ret );
+    if ((ret = x509_get_dates(&p, end, &crt->valid_from,
+                              &crt->valid_to)) != 0) {
+        mbedtls_x509_crt_free(crt);
+        return ret;
     }
 
     /*
@@ -1204,17 +1235,15 @@
      */
     crt->subject_raw.p = p;
 
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-    {
-        mbedtls_x509_crt_free( crt );
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_FORMAT, ret ) );
+    if ((ret = mbedtls_asn1_get_tag(&p, end, &len,
+                                    MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) != 0) {
+        mbedtls_x509_crt_free(crt);
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_FORMAT, ret);
     }
 
-    if( len && ( ret = mbedtls_x509_get_name( &p, p + len, &crt->subject ) ) != 0 )
-    {
-        mbedtls_x509_crt_free( crt );
-        return( ret );
+    if (len && (ret = mbedtls_x509_get_name(&p, p + len, &crt->subject)) != 0) {
+        mbedtls_x509_crt_free(crt);
+        return ret;
     }
 
     crt->subject_raw.len = p - crt->subject_raw.p;
@@ -1223,10 +1252,9 @@
      * SubjectPublicKeyInfo
      */
     crt->pk_raw.p = p;
-    if( ( ret = mbedtls_pk_parse_subpubkey( &p, end, &crt->pk ) ) != 0 )
-    {
-        mbedtls_x509_crt_free( crt );
-        return( ret );
+    if ((ret = mbedtls_pk_parse_subpubkey(&p, end, &crt->pk)) != 0) {
+        mbedtls_x509_crt_free(crt);
+        return ret;
     }
     crt->pk_raw.len = p - crt->pk_raw.p;
 
@@ -1238,46 +1266,40 @@
      *  extensions      [3]  EXPLICIT Extensions OPTIONAL
      *                       -- If present, version shall be v3
      */
-    if( crt->version == 2 || crt->version == 3 )
-    {
-        ret = x509_get_uid( &p, end, &crt->issuer_id,  1 );
-        if( ret != 0 )
-        {
-            mbedtls_x509_crt_free( crt );
-            return( ret );
+    if (crt->version == 2 || crt->version == 3) {
+        ret = x509_get_uid(&p, end, &crt->issuer_id,  1);
+        if (ret != 0) {
+            mbedtls_x509_crt_free(crt);
+            return ret;
         }
     }
 
-    if( crt->version == 2 || crt->version == 3 )
-    {
-        ret = x509_get_uid( &p, end, &crt->subject_id,  2 );
-        if( ret != 0 )
-        {
-            mbedtls_x509_crt_free( crt );
-            return( ret );
+    if (crt->version == 2 || crt->version == 3) {
+        ret = x509_get_uid(&p, end, &crt->subject_id,  2);
+        if (ret != 0) {
+            mbedtls_x509_crt_free(crt);
+            return ret;
         }
     }
 
     int extensions_allowed = 1;
 #if !defined(MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3)
-    if( crt->version != 3 )
+    if (crt->version != 3) {
         extensions_allowed = 0;
+    }
 #endif
-    if( extensions_allowed )
-    {
-        ret = x509_get_crt_ext( &p, end, crt, cb, p_ctx );
-        if( ret != 0 )
-        {
-            mbedtls_x509_crt_free( crt );
-            return( ret );
+    if (extensions_allowed) {
+        ret = x509_get_crt_ext(&p, end, crt, cb, p_ctx);
+        if (ret != 0) {
+            mbedtls_x509_crt_free(crt);
+            return ret;
         }
     }
 
-    if( p != end )
-    {
-        mbedtls_x509_crt_free( crt );
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_FORMAT,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+    if (p != end) {
+        mbedtls_x509_crt_free(crt);
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_FORMAT,
+                                 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
     }
 
     end = crt_end;
@@ -1289,49 +1311,45 @@
      *  signatureAlgorithm   AlgorithmIdentifier,
      *  signatureValue       BIT STRING
      */
-    if( ( ret = mbedtls_x509_get_alg( &p, end, &sig_oid2, &sig_params2 ) ) != 0 )
-    {
-        mbedtls_x509_crt_free( crt );
-        return( ret );
+    if ((ret = mbedtls_x509_get_alg(&p, end, &sig_oid2, &sig_params2)) != 0) {
+        mbedtls_x509_crt_free(crt);
+        return ret;
     }
 
-    if( crt->sig_oid.len != sig_oid2.len ||
-        memcmp( crt->sig_oid.p, sig_oid2.p, crt->sig_oid.len ) != 0 ||
+    if (crt->sig_oid.len != sig_oid2.len ||
+        memcmp(crt->sig_oid.p, sig_oid2.p, crt->sig_oid.len) != 0 ||
         sig_params1.tag != sig_params2.tag ||
         sig_params1.len != sig_params2.len ||
-        ( sig_params1.len != 0 &&
-          memcmp( sig_params1.p, sig_params2.p, sig_params1.len ) != 0 ) )
-    {
-        mbedtls_x509_crt_free( crt );
-        return( MBEDTLS_ERR_X509_SIG_MISMATCH );
+        (sig_params1.len != 0 &&
+         memcmp(sig_params1.p, sig_params2.p, sig_params1.len) != 0)) {
+        mbedtls_x509_crt_free(crt);
+        return MBEDTLS_ERR_X509_SIG_MISMATCH;
     }
 
-    if( ( ret = mbedtls_x509_get_sig( &p, end, &crt->sig ) ) != 0 )
-    {
-        mbedtls_x509_crt_free( crt );
-        return( ret );
+    if ((ret = mbedtls_x509_get_sig(&p, end, &crt->sig)) != 0) {
+        mbedtls_x509_crt_free(crt);
+        return ret;
     }
 
-    if( p != end )
-    {
-        mbedtls_x509_crt_free( crt );
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_FORMAT,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+    if (p != end) {
+        mbedtls_x509_crt_free(crt);
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_FORMAT,
+                                 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
     }
 
-    return( 0 );
+    return 0;
 }
 
 /*
  * Parse one X.509 certificate in DER format from a buffer and add them to a
  * chained list
  */
-static int mbedtls_x509_crt_parse_der_internal( mbedtls_x509_crt *chain,
-                                                const unsigned char *buf,
-                                                size_t buflen,
-                                                int make_copy,
-                                                mbedtls_x509_crt_ext_cb_t cb,
-                                                void *p_ctx )
+static int mbedtls_x509_crt_parse_der_internal(mbedtls_x509_crt *chain,
+                                               const unsigned char *buf,
+                                               size_t buflen,
+                                               int make_copy,
+                                               mbedtls_x509_crt_ext_cb_t cb,
+                                               void *p_ctx)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     mbedtls_x509_crt *crt = chain, *prev = NULL;
@@ -1339,11 +1357,11 @@
     /*
      * Check for valid input
      */
-    if( crt == NULL || buf == NULL )
-        return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
+    if (crt == NULL || buf == NULL) {
+        return MBEDTLS_ERR_X509_BAD_INPUT_DATA;
+    }
 
-    while( crt->version != 0 && crt->next != NULL )
-    {
+    while (crt->version != 0 && crt->next != NULL) {
         prev = crt;
         crt = crt->next;
     }
@@ -1351,64 +1369,65 @@
     /*
      * Add new certificate on the end of the chain if needed.
      */
-    if( crt->version != 0 && crt->next == NULL )
-    {
-        crt->next = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) );
+    if (crt->version != 0 && crt->next == NULL) {
+        crt->next = mbedtls_calloc(1, sizeof(mbedtls_x509_crt));
 
-        if( crt->next == NULL )
-            return( MBEDTLS_ERR_X509_ALLOC_FAILED );
+        if (crt->next == NULL) {
+            return MBEDTLS_ERR_X509_ALLOC_FAILED;
+        }
 
         prev = crt;
-        mbedtls_x509_crt_init( crt->next );
+        mbedtls_x509_crt_init(crt->next);
         crt = crt->next;
     }
 
-    ret = x509_crt_parse_der_core( crt, buf, buflen, make_copy, cb, p_ctx );
-    if( ret != 0 )
-    {
-        if( prev )
+    ret = x509_crt_parse_der_core(crt, buf, buflen, make_copy, cb, p_ctx);
+    if (ret != 0) {
+        if (prev) {
             prev->next = NULL;
+        }
 
-        if( crt != chain )
-            mbedtls_free( crt );
+        if (crt != chain) {
+            mbedtls_free(crt);
+        }
 
-        return( ret );
+        return ret;
     }
 
-    return( 0 );
+    return 0;
 }
 
-int mbedtls_x509_crt_parse_der_nocopy( mbedtls_x509_crt *chain,
-                                       const unsigned char *buf,
-                                       size_t buflen )
+int mbedtls_x509_crt_parse_der_nocopy(mbedtls_x509_crt *chain,
+                                      const unsigned char *buf,
+                                      size_t buflen)
 {
-    return( mbedtls_x509_crt_parse_der_internal( chain, buf, buflen, 0, NULL, NULL ) );
+    return mbedtls_x509_crt_parse_der_internal(chain, buf, buflen, 0, NULL, NULL);
 }
 
-int mbedtls_x509_crt_parse_der_with_ext_cb( mbedtls_x509_crt *chain,
-                                            const unsigned char *buf,
-                                            size_t buflen,
-                                            int make_copy,
-                                            mbedtls_x509_crt_ext_cb_t cb,
-                                            void *p_ctx )
+int mbedtls_x509_crt_parse_der_with_ext_cb(mbedtls_x509_crt *chain,
+                                           const unsigned char *buf,
+                                           size_t buflen,
+                                           int make_copy,
+                                           mbedtls_x509_crt_ext_cb_t cb,
+                                           void *p_ctx)
 {
-    return( mbedtls_x509_crt_parse_der_internal( chain, buf, buflen, make_copy, cb, p_ctx ) );
+    return mbedtls_x509_crt_parse_der_internal(chain, buf, buflen, make_copy, cb, p_ctx);
 }
 
-int mbedtls_x509_crt_parse_der( mbedtls_x509_crt *chain,
-                                const unsigned char *buf,
-                                size_t buflen )
+int mbedtls_x509_crt_parse_der(mbedtls_x509_crt *chain,
+                               const unsigned char *buf,
+                               size_t buflen)
 {
-    return( mbedtls_x509_crt_parse_der_internal( chain, buf, buflen, 1, NULL, NULL ) );
+    return mbedtls_x509_crt_parse_der_internal(chain, buf, buflen, 1, NULL, NULL);
 }
 
 /*
  * Parse one or more PEM certificates from a buffer and add them to the chained
  * list
  */
-int mbedtls_x509_crt_parse( mbedtls_x509_crt *chain,
-                            const unsigned char *buf,
-                            size_t buflen )
+int mbedtls_x509_crt_parse(mbedtls_x509_crt *chain,
+                           const unsigned char *buf,
+                           size_t buflen)
 {
 #if defined(MBEDTLS_PEM_PARSE_C)
     int success = 0, first_error = 0, total_failed = 0;
@@ -1418,59 +1437,53 @@
     /*
      * Check for valid input
      */
-    if( chain == NULL || buf == NULL )
-        return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
+    if (chain == NULL || buf == NULL) {
+        return MBEDTLS_ERR_X509_BAD_INPUT_DATA;
+    }
 
     /*
      * Determine buffer content. Buffer contains either one DER certificate or
      * one or more PEM certificates.
      */
 #if defined(MBEDTLS_PEM_PARSE_C)
-    if( buflen != 0 && buf[buflen - 1] == '\0' &&
-        strstr( (const char *) buf, "-----BEGIN CERTIFICATE-----" ) != NULL )
-    {
+    if (buflen != 0 && buf[buflen - 1] == '\0' &&
+        strstr((const char *) buf, "-----BEGIN CERTIFICATE-----") != NULL) {
         buf_format = MBEDTLS_X509_FORMAT_PEM;
     }
 
-    if( buf_format == MBEDTLS_X509_FORMAT_DER )
-        return mbedtls_x509_crt_parse_der( chain, buf, buflen );
+    if (buf_format == MBEDTLS_X509_FORMAT_DER) {
+        return mbedtls_x509_crt_parse_der(chain, buf, buflen);
+    }
 #else
-    return mbedtls_x509_crt_parse_der( chain, buf, buflen );
+    return mbedtls_x509_crt_parse_der(chain, buf, buflen);
 #endif
 
 #if defined(MBEDTLS_PEM_PARSE_C)
-    if( buf_format == MBEDTLS_X509_FORMAT_PEM )
-    {
+    if (buf_format == MBEDTLS_X509_FORMAT_PEM) {
         int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
         mbedtls_pem_context pem;
 
         /* 1 rather than 0 since the terminating NULL byte is counted in */
-        while( buflen > 1 )
-        {
+        while (buflen > 1) {
             size_t use_len;
-            mbedtls_pem_init( &pem );
+            mbedtls_pem_init(&pem);
 
             /* If we get there, we know the string is null-terminated */
-            ret = mbedtls_pem_read_buffer( &pem,
-                           "-----BEGIN CERTIFICATE-----",
-                           "-----END CERTIFICATE-----",
-                           buf, NULL, 0, &use_len );
+            ret = mbedtls_pem_read_buffer(&pem,
+                                          "-----BEGIN CERTIFICATE-----",
+                                          "-----END CERTIFICATE-----",
+                                          buf, NULL, 0, &use_len);
 
-            if( ret == 0 )
-            {
+            if (ret == 0) {
                 /*
                  * Was PEM encoded
                  */
                 buflen -= use_len;
                 buf += use_len;
-            }
-            else if( ret == MBEDTLS_ERR_PEM_BAD_INPUT_DATA )
-            {
-                return( ret );
-            }
-            else if( ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
-            {
-                mbedtls_pem_free( &pem );
+            } else if (ret == MBEDTLS_ERR_PEM_BAD_INPUT_DATA) {
+                return ret;
+            } else if (ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT) {
+                mbedtls_pem_free(&pem);
 
                 /*
                  * PEM header and footer were found
@@ -1478,29 +1491,31 @@
                 buflen -= use_len;
                 buf += use_len;
 
-                if( first_error == 0 )
+                if (first_error == 0) {
                     first_error = ret;
+                }
 
                 total_failed++;
                 continue;
-            }
-            else
+            } else {
                 break;
+            }
 
-            ret = mbedtls_x509_crt_parse_der( chain, pem.buf, pem.buflen );
+            ret = mbedtls_x509_crt_parse_der(chain, pem.buf, pem.buflen);
 
-            mbedtls_pem_free( &pem );
+            mbedtls_pem_free(&pem);
 
-            if( ret != 0 )
-            {
+            if (ret != 0) {
                 /*
                  * Quit parsing on a memory error
                  */
-                if( ret == MBEDTLS_ERR_X509_ALLOC_FAILED )
-                    return( ret );
+                if (ret == MBEDTLS_ERR_X509_ALLOC_FAILED) {
+                    return ret;
+                }
 
-                if( first_error == 0 )
+                if (first_error == 0) {
                     first_error = ret;
+                }
 
                 total_failed++;
                 continue;
@@ -1510,12 +1525,13 @@
         }
     }
 
-    if( success )
-        return( total_failed );
-    else if( first_error )
-        return( first_error );
-    else
-        return( MBEDTLS_ERR_X509_CERT_UNKNOWN_FORMAT );
+    if (success) {
+        return total_failed;
+    } else if (first_error) {
+        return first_error;
+    } else {
+        return MBEDTLS_ERR_X509_CERT_UNKNOWN_FORMAT;
+    }
 #endif /* MBEDTLS_PEM_PARSE_C */
 }
 
@@ -1523,24 +1539,25 @@
 /*
  * Load one or more certificates and add them to the chained list
  */
-int mbedtls_x509_crt_parse_file( mbedtls_x509_crt *chain, const char *path )
+int mbedtls_x509_crt_parse_file(mbedtls_x509_crt *chain, const char *path)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t n;
     unsigned char *buf;
 
-    if( ( ret = mbedtls_pk_load_file( path, &buf, &n ) ) != 0 )
-        return( ret );
+    if ((ret = mbedtls_pk_load_file(path, &buf, &n)) != 0) {
+        return ret;
+    }
 
-    ret = mbedtls_x509_crt_parse( chain, buf, n );
+    ret = mbedtls_x509_crt_parse(chain, buf, n);
 
-    mbedtls_platform_zeroize( buf, n );
-    mbedtls_free( buf );
+    mbedtls_platform_zeroize(buf, n);
+    mbedtls_free(buf);
 
-    return( ret );
+    return ret;
 }
 
-int mbedtls_x509_crt_parse_path( mbedtls_x509_crt *chain, const char *path )
+int mbedtls_x509_crt_parse_path(mbedtls_x509_crt *chain, const char *path)
 {
     int ret = 0;
 #if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
@@ -1548,96 +1565,94 @@
     WCHAR szDir[MAX_PATH];
     char filename[MAX_PATH];
     char *p;
-    size_t len = strlen( path );
+    size_t len = strlen(path);
 
     WIN32_FIND_DATAW file_data;
     HANDLE hFind;
 
-    if( len > MAX_PATH - 3 )
-        return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
+    if (len > MAX_PATH - 3) {
+        return MBEDTLS_ERR_X509_BAD_INPUT_DATA;
+    }
 
-    memset( szDir, 0, sizeof(szDir) );
-    memset( filename, 0, MAX_PATH );
-    memcpy( filename, path, len );
+    memset(szDir, 0, sizeof(szDir));
+    memset(filename, 0, MAX_PATH);
+    memcpy(filename, path, len);
     filename[len++] = '\\';
     p = filename + len;
     filename[len++] = '*';
 
-    w_ret = MultiByteToWideChar( CP_ACP, 0, filename, (int)len, szDir,
-                                 MAX_PATH - 3 );
-    if( w_ret == 0 )
-        return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
+    w_ret = MultiByteToWideChar(CP_ACP, 0, filename, (int) len, szDir,
+                                MAX_PATH - 3);
+    if (w_ret == 0) {
+        return MBEDTLS_ERR_X509_BAD_INPUT_DATA;
+    }
 
-    hFind = FindFirstFileW( szDir, &file_data );
-    if( hFind == INVALID_HANDLE_VALUE )
-        return( MBEDTLS_ERR_X509_FILE_IO_ERROR );
+    hFind = FindFirstFileW(szDir, &file_data);
+    if (hFind == INVALID_HANDLE_VALUE) {
+        return MBEDTLS_ERR_X509_FILE_IO_ERROR;
+    }
 
     len = MAX_PATH - len;
-    do
-    {
-        memset( p, 0, len );
+    do {
+        memset(p, 0, len);
 
-        if( file_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY )
+        if (file_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
             continue;
+        }
 
-        w_ret = WideCharToMultiByte( CP_ACP, 0, file_data.cFileName,
-                                     lstrlenW( file_data.cFileName ),
-                                     p, (int) len - 1,
-                                     NULL, NULL );
-        if( w_ret == 0 )
-        {
+        w_ret = WideCharToMultiByte(CP_ACP, 0, file_data.cFileName,
+                                    lstrlenW(file_data.cFileName),
+                                    p, (int) len - 1,
+                                    NULL, NULL);
+        if (w_ret == 0) {
             ret = MBEDTLS_ERR_X509_FILE_IO_ERROR;
             goto cleanup;
         }
 
-        w_ret = mbedtls_x509_crt_parse_file( chain, filename );
-        if( w_ret < 0 )
+        w_ret = mbedtls_x509_crt_parse_file(chain, filename);
+        if (w_ret < 0) {
             ret++;
-        else
+        } else {
             ret += w_ret;
-    }
-    while( FindNextFileW( hFind, &file_data ) != 0 );
+        }
+    } while (FindNextFileW(hFind, &file_data) != 0);
 
-    if( GetLastError() != ERROR_NO_MORE_FILES )
+    if (GetLastError() != ERROR_NO_MORE_FILES) {
         ret = MBEDTLS_ERR_X509_FILE_IO_ERROR;
+    }
 
 cleanup:
-    FindClose( hFind );
+    FindClose(hFind);
 #else /* _WIN32 */
     int t_ret;
     int snp_ret;
     struct stat sb;
     struct dirent *entry;
     char entry_name[MBEDTLS_X509_MAX_FILE_PATH_LEN];
-    DIR *dir = opendir( path );
+    DIR *dir = opendir(path);
 
-    if( dir == NULL )
-        return( MBEDTLS_ERR_X509_FILE_IO_ERROR );
+    if (dir == NULL) {
+        return MBEDTLS_ERR_X509_FILE_IO_ERROR;
+    }
 
 #if defined(MBEDTLS_THREADING_C)
-    if( ( ret = mbedtls_mutex_lock( &mbedtls_threading_readdir_mutex ) ) != 0 )
-    {
-        closedir( dir );
-        return( ret );
+    if ((ret = mbedtls_mutex_lock(&mbedtls_threading_readdir_mutex)) != 0) {
+        closedir(dir);
+        return ret;
     }
 #endif /* MBEDTLS_THREADING_C */
 
-    memset( &sb, 0, sizeof( sb ) );
+    memset(&sb, 0, sizeof(sb));
 
-    while( ( entry = readdir( dir ) ) != NULL )
-    {
-        snp_ret = mbedtls_snprintf( entry_name, sizeof entry_name,
-                                    "%s/%s", path, entry->d_name );
+    while ((entry = readdir(dir)) != NULL) {
+        snp_ret = mbedtls_snprintf(entry_name, sizeof entry_name,
+                                   "%s/%s", path, entry->d_name);
 
-        if( snp_ret < 0 || (size_t)snp_ret >= sizeof entry_name )
-        {
+        if (snp_ret < 0 || (size_t) snp_ret >= sizeof entry_name) {
             ret = MBEDTLS_ERR_X509_BUFFER_TOO_SMALL;
             goto cleanup;
-        }
-        else if( stat( entry_name, &sb ) == -1 )
-        {
-            if( errno == ENOENT )
-            {
+        } else if (stat(entry_name, &sb) == -1) {
+            if (errno == ENOENT) {
                 /* Broken symbolic link - ignore this entry.
                     stat(2) will return this error for either (a) a dangling
                     symlink or (b) a missing file.
@@ -1645,38 +1660,39 @@
                     assume that it does exist and therefore treat this as a
                     dangling symlink. */
                 continue;
-            }
-            else
-            {
+            } else {
                 /* Some other file error; report the error. */
                 ret = MBEDTLS_ERR_X509_FILE_IO_ERROR;
                 goto cleanup;
             }
         }
 
-        if( !S_ISREG( sb.st_mode ) )
+        if (!S_ISREG(sb.st_mode)) {
             continue;
+        }
 
         // Ignore parse errors
         //
-        t_ret = mbedtls_x509_crt_parse_file( chain, entry_name );
-        if( t_ret < 0 )
+        t_ret = mbedtls_x509_crt_parse_file(chain, entry_name);
+        if (t_ret < 0) {
             ret++;
-        else
+        } else {
             ret += t_ret;
+        }
     }
 
 cleanup:
-    closedir( dir );
+    closedir(dir);
 
 #if defined(MBEDTLS_THREADING_C)
-    if( mbedtls_mutex_unlock( &mbedtls_threading_readdir_mutex ) != 0 )
+    if (mbedtls_mutex_unlock(&mbedtls_threading_readdir_mutex) != 0) {
         ret = MBEDTLS_ERR_THREADING_MUTEX_ERROR;
+    }
 #endif /* MBEDTLS_THREADING_C */
 
 #endif /* _WIN32 */
 
-    return( ret );
+    return ret;
 }
 #endif /* MBEDTLS_FS_IO */
 
@@ -1692,8 +1708,8 @@
  * NOTE: we currently only parse and use otherName of type HwModuleName,
  * as defined in RFC 4108.
  */
-static int x509_get_other_name( const mbedtls_x509_buf *subject_alt_name,
-                                mbedtls_x509_san_other_name *other_name )
+static int x509_get_other_name(const mbedtls_x509_buf *subject_alt_name,
+                               mbedtls_x509_san_other_name *other_name)
 {
     int ret = 0;
     size_t len;
@@ -1701,19 +1717,19 @@
     const unsigned char *end = p + subject_alt_name->len;
     mbedtls_x509_buf cur_oid;
 
-    if( ( subject_alt_name->tag &
-        ( MBEDTLS_ASN1_TAG_CLASS_MASK | MBEDTLS_ASN1_TAG_VALUE_MASK ) ) !=
-        ( MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_X509_SAN_OTHER_NAME ) )
-    {
+    if ((subject_alt_name->tag &
+         (MBEDTLS_ASN1_TAG_CLASS_MASK | MBEDTLS_ASN1_TAG_VALUE_MASK)) !=
+        (MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_X509_SAN_OTHER_NAME)) {
         /*
          * The given subject alternative name is not of type "othername".
          */
-        return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
+        return MBEDTLS_ERR_X509_BAD_INPUT_DATA;
     }
 
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-                                      MBEDTLS_ASN1_OID ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+    if ((ret = mbedtls_asn1_get_tag(&p, end, &len,
+                                    MBEDTLS_ASN1_OID)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+    }
 
     cur_oid.tag = MBEDTLS_ASN1_OID;
     cur_oid.p = p;
@@ -1722,62 +1738,63 @@
     /*
      * Only HwModuleName is currently supported.
      */
-    if( MBEDTLS_OID_CMP( MBEDTLS_OID_ON_HW_MODULE_NAME, &cur_oid ) != 0 )
-    {
-        return( MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE );
+    if (MBEDTLS_OID_CMP(MBEDTLS_OID_ON_HW_MODULE_NAME, &cur_oid) != 0) {
+        return MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE;
     }
 
-    if( p + len >= end )
-    {
-        mbedtls_platform_zeroize( other_name, sizeof( *other_name ) );
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+    if (p + len >= end) {
+        mbedtls_platform_zeroize(other_name, sizeof(*other_name));
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
     }
     p += len;
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_CONTEXT_SPECIFIC ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+    if ((ret = mbedtls_asn1_get_tag(&p, end, &len,
+                                    MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_CONTEXT_SPECIFIC)) !=
+        0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+    }
 
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-                     MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-       return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+    if ((ret = mbedtls_asn1_get_tag(&p, end, &len,
+                                    MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+    }
 
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len, MBEDTLS_ASN1_OID ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+    if ((ret = mbedtls_asn1_get_tag(&p, end, &len, MBEDTLS_ASN1_OID)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+    }
 
     other_name->value.hardware_module_name.oid.tag = MBEDTLS_ASN1_OID;
     other_name->value.hardware_module_name.oid.p = p;
     other_name->value.hardware_module_name.oid.len = len;
 
-    if( p + len >= end )
-    {
-        mbedtls_platform_zeroize( other_name, sizeof( *other_name ) );
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+    if (p + len >= end) {
+        mbedtls_platform_zeroize(other_name, sizeof(*other_name));
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
     }
     p += len;
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-                                      MBEDTLS_ASN1_OCTET_STRING ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret ) );
+    if ((ret = mbedtls_asn1_get_tag(&p, end, &len,
+                                    MBEDTLS_ASN1_OCTET_STRING)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+    }
 
     other_name->value.hardware_module_name.val.tag = MBEDTLS_ASN1_OCTET_STRING;
     other_name->value.hardware_module_name.val.p = p;
     other_name->value.hardware_module_name.val.len = len;
     p += len;
-    if( p != end )
-    {
-        mbedtls_platform_zeroize( other_name,
-                                  sizeof( *other_name ) );
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+    if (p != end) {
+        mbedtls_platform_zeroize(other_name,
+                                 sizeof(*other_name));
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
     }
-    return( 0 );
+    return 0;
 }
 
-static int x509_info_subject_alt_name( char **buf, size_t *size,
-                                       const mbedtls_x509_sequence
-                                                    *subject_alt_name,
-                                       const char *prefix )
+static int x509_info_subject_alt_name(char **buf, size_t *size,
+                                      const mbedtls_x509_sequence
+                                      *subject_alt_name,
+                                      const char *prefix)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t i;
@@ -1787,28 +1804,22 @@
     mbedtls_x509_subject_alternative_name san;
     int parse_ret;
 
-    while( cur != NULL )
-    {
-        memset( &san, 0, sizeof( san ) );
-        parse_ret = mbedtls_x509_parse_subject_alt_name( &cur->buf, &san );
-        if( parse_ret != 0 )
-        {
-            if( parse_ret == MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE )
-            {
-                ret = mbedtls_snprintf( p, n, "\n%s    <unsupported>", prefix );
+    while (cur != NULL) {
+        memset(&san, 0, sizeof(san));
+        parse_ret = mbedtls_x509_parse_subject_alt_name(&cur->buf, &san);
+        if (parse_ret != 0) {
+            if (parse_ret == MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE) {
+                ret = mbedtls_snprintf(p, n, "\n%s    <unsupported>", prefix);
                 MBEDTLS_X509_SAFE_SNPRINTF;
-            }
-            else
-            {
-                ret = mbedtls_snprintf( p, n, "\n%s    <malformed>", prefix );
+            } else {
+                ret = mbedtls_snprintf(p, n, "\n%s    <malformed>", prefix);
                 MBEDTLS_X509_SAFE_SNPRINTF;
             }
             cur = cur->next;
             continue;
         }
 
-        switch( san.type )
-        {
+        switch (san.type) {
             /*
              * otherName
              */
@@ -1816,26 +1827,31 @@
             {
                 mbedtls_x509_san_other_name *other_name = &san.san.other_name;
 
-                ret = mbedtls_snprintf( p, n, "\n%s    otherName :", prefix );
+                ret = mbedtls_snprintf(p, n, "\n%s    otherName :", prefix);
                 MBEDTLS_X509_SAFE_SNPRINTF;
 
-                if( MBEDTLS_OID_CMP( MBEDTLS_OID_ON_HW_MODULE_NAME,
-                                     &other_name->value.hardware_module_name.oid ) != 0 )
-                {
-                    ret = mbedtls_snprintf( p, n, "\n%s        hardware module name :", prefix );
+                if (MBEDTLS_OID_CMP(MBEDTLS_OID_ON_HW_MODULE_NAME,
+                                    &other_name->value.hardware_module_name.oid) != 0) {
+                    ret = mbedtls_snprintf(p, n, "\n%s        hardware module name :", prefix);
                     MBEDTLS_X509_SAFE_SNPRINTF;
-                    ret = mbedtls_snprintf( p, n, "\n%s            hardware type          : ", prefix );
+                    ret =
+                        mbedtls_snprintf(p, n, "\n%s            hardware type          : ", prefix);
                     MBEDTLS_X509_SAFE_SNPRINTF;
 
-                    ret = mbedtls_oid_get_numeric_string( p, n, &other_name->value.hardware_module_name.oid );
+                    ret = mbedtls_oid_get_numeric_string(p,
+                                                         n,
+                                                         &other_name->value.hardware_module_name.oid);
                     MBEDTLS_X509_SAFE_SNPRINTF;
 
-                    ret = mbedtls_snprintf( p, n, "\n%s            hardware serial number : ", prefix );
+                    ret =
+                        mbedtls_snprintf(p, n, "\n%s            hardware serial number : ", prefix);
                     MBEDTLS_X509_SAFE_SNPRINTF;
 
-                    for( i = 0; i < other_name->value.hardware_module_name.val.len; i++ )
-                    {
-                        ret = mbedtls_snprintf( p, n, "%02X", other_name->value.hardware_module_name.val.p[i] );
+                    for (i = 0; i < other_name->value.hardware_module_name.val.len; i++) {
+                        ret = mbedtls_snprintf(p,
+                                               n,
+                                               "%02X",
+                                               other_name->value.hardware_module_name.val.p[i]);
                         MBEDTLS_X509_SAFE_SNPRINTF;
                     }
                 }/* MBEDTLS_OID_ON_HW_MODULE_NAME */
@@ -1847,15 +1863,14 @@
              */
             case MBEDTLS_X509_SAN_DNS_NAME:
             {
-                ret = mbedtls_snprintf( p, n, "\n%s    dNSName : ", prefix );
+                ret = mbedtls_snprintf(p, n, "\n%s    dNSName : ", prefix);
                 MBEDTLS_X509_SAFE_SNPRINTF;
-                if( san.san.unstructured_name.len >= n )
-                {
+                if (san.san.unstructured_name.len >= n) {
                     *p = '\0';
-                    return( MBEDTLS_ERR_X509_BUFFER_TOO_SMALL );
+                    return MBEDTLS_ERR_X509_BUFFER_TOO_SMALL;
                 }
 
-                memcpy( p, san.san.unstructured_name.p, san.san.unstructured_name.len );
+                memcpy(p, san.san.unstructured_name.p, san.san.unstructured_name.len);
                 p += san.san.unstructured_name.len;
                 n -= san.san.unstructured_name.len;
             }
@@ -1865,7 +1880,7 @@
              * Type not supported, skip item.
              */
             default:
-                ret = mbedtls_snprintf( p, n, "\n%s    <unsupported>", prefix );
+                ret = mbedtls_snprintf(p, n, "\n%s    <unsupported>", prefix);
                 MBEDTLS_X509_SAFE_SNPRINTF;
                 break;
         }
@@ -1878,32 +1893,32 @@
     *size = n;
     *buf = p;
 
-    return( 0 );
+    return 0;
 }
 
-int mbedtls_x509_parse_subject_alt_name( const mbedtls_x509_buf *san_buf,
-                                         mbedtls_x509_subject_alternative_name *san )
+int mbedtls_x509_parse_subject_alt_name(const mbedtls_x509_buf *san_buf,
+                                        mbedtls_x509_subject_alternative_name *san)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    switch( san_buf->tag &
-            ( MBEDTLS_ASN1_TAG_CLASS_MASK |
-              MBEDTLS_ASN1_TAG_VALUE_MASK ) )
-    {
+    switch (san_buf->tag &
+            (MBEDTLS_ASN1_TAG_CLASS_MASK |
+             MBEDTLS_ASN1_TAG_VALUE_MASK)) {
         /*
          * otherName
          */
-        case( MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_X509_SAN_OTHER_NAME ):
+        case (MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_X509_SAN_OTHER_NAME):
         {
             mbedtls_x509_san_other_name other_name;
 
-            ret = x509_get_other_name( san_buf, &other_name );
-            if( ret != 0 )
-                return( ret );
+            ret = x509_get_other_name(san_buf, &other_name);
+            if (ret != 0) {
+                return ret;
+            }
 
-            memset( san, 0, sizeof( mbedtls_x509_subject_alternative_name ) );
+            memset(san, 0, sizeof(mbedtls_x509_subject_alternative_name));
             san->type = MBEDTLS_X509_SAN_OTHER_NAME;
-            memcpy( &san->san.other_name,
-                    &other_name, sizeof( other_name ) );
+            memcpy(&san->san.other_name,
+                   &other_name, sizeof(other_name));
 
         }
         break;
@@ -1911,13 +1926,13 @@
         /*
          * dNSName
          */
-        case( MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_X509_SAN_DNS_NAME ):
+        case (MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_X509_SAN_DNS_NAME):
         {
-            memset( san, 0, sizeof( mbedtls_x509_subject_alternative_name ) );
+            memset(san, 0, sizeof(mbedtls_x509_subject_alternative_name));
             san->type = MBEDTLS_X509_SAN_DNS_NAME;
 
-            memcpy( &san->san.unstructured_name,
-                    san_buf, sizeof( *san_buf ) );
+            memcpy(&san->san.unstructured_name,
+                   san_buf, sizeof(*san_buf));
 
         }
         break;
@@ -1926,75 +1941,75 @@
          * Type not supported
          */
         default:
-            return( MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE );
+            return MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE;
     }
-    return( 0 );
+    return 0;
 }
 
 #define PRINT_ITEM(i)                           \
     {                                           \
-        ret = mbedtls_snprintf( p, n, "%s" i, sep );    \
+        ret = mbedtls_snprintf(p, n, "%s" i, sep);    \
         MBEDTLS_X509_SAFE_SNPRINTF;                        \
         sep = ", ";                             \
     }
 
-#define CERT_TYPE(type,name)                    \
-    if( ns_cert_type & (type) )                 \
-        PRINT_ITEM( name );
+#define CERT_TYPE(type, name)                    \
+    if (ns_cert_type & (type))                 \
+    PRINT_ITEM(name);
 
-static int x509_info_cert_type( char **buf, size_t *size,
-                                unsigned char ns_cert_type )
+static int x509_info_cert_type(char **buf, size_t *size,
+                               unsigned char ns_cert_type)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t n = *size;
     char *p = *buf;
     const char *sep = "";
 
-    CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_SSL_CLIENT,         "SSL Client" );
-    CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_SSL_SERVER,         "SSL Server" );
-    CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_EMAIL,              "Email" );
-    CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING,     "Object Signing" );
-    CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_RESERVED,           "Reserved" );
-    CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_SSL_CA,             "SSL CA" );
-    CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_EMAIL_CA,           "Email CA" );
-    CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING_CA,  "Object Signing CA" );
+    CERT_TYPE(MBEDTLS_X509_NS_CERT_TYPE_SSL_CLIENT,         "SSL Client");
+    CERT_TYPE(MBEDTLS_X509_NS_CERT_TYPE_SSL_SERVER,         "SSL Server");
+    CERT_TYPE(MBEDTLS_X509_NS_CERT_TYPE_EMAIL,              "Email");
+    CERT_TYPE(MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING,     "Object Signing");
+    CERT_TYPE(MBEDTLS_X509_NS_CERT_TYPE_RESERVED,           "Reserved");
+    CERT_TYPE(MBEDTLS_X509_NS_CERT_TYPE_SSL_CA,             "SSL CA");
+    CERT_TYPE(MBEDTLS_X509_NS_CERT_TYPE_EMAIL_CA,           "Email CA");
+    CERT_TYPE(MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING_CA,  "Object Signing CA");
 
     *size = n;
     *buf = p;
 
-    return( 0 );
+    return 0;
 }
 
-#define KEY_USAGE(code,name)    \
-    if( key_usage & (code) )    \
-        PRINT_ITEM( name );
+#define KEY_USAGE(code, name)    \
+    if (key_usage & (code))    \
+    PRINT_ITEM(name);
 
-static int x509_info_key_usage( char **buf, size_t *size,
-                                unsigned int key_usage )
+static int x509_info_key_usage(char **buf, size_t *size,
+                               unsigned int key_usage)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t n = *size;
     char *p = *buf;
     const char *sep = "";
 
-    KEY_USAGE( MBEDTLS_X509_KU_DIGITAL_SIGNATURE,    "Digital Signature" );
-    KEY_USAGE( MBEDTLS_X509_KU_NON_REPUDIATION,      "Non Repudiation" );
-    KEY_USAGE( MBEDTLS_X509_KU_KEY_ENCIPHERMENT,     "Key Encipherment" );
-    KEY_USAGE( MBEDTLS_X509_KU_DATA_ENCIPHERMENT,    "Data Encipherment" );
-    KEY_USAGE( MBEDTLS_X509_KU_KEY_AGREEMENT,        "Key Agreement" );
-    KEY_USAGE( MBEDTLS_X509_KU_KEY_CERT_SIGN,        "Key Cert Sign" );
-    KEY_USAGE( MBEDTLS_X509_KU_CRL_SIGN,             "CRL Sign" );
-    KEY_USAGE( MBEDTLS_X509_KU_ENCIPHER_ONLY,        "Encipher Only" );
-    KEY_USAGE( MBEDTLS_X509_KU_DECIPHER_ONLY,        "Decipher Only" );
+    KEY_USAGE(MBEDTLS_X509_KU_DIGITAL_SIGNATURE,    "Digital Signature");
+    KEY_USAGE(MBEDTLS_X509_KU_NON_REPUDIATION,      "Non Repudiation");
+    KEY_USAGE(MBEDTLS_X509_KU_KEY_ENCIPHERMENT,     "Key Encipherment");
+    KEY_USAGE(MBEDTLS_X509_KU_DATA_ENCIPHERMENT,    "Data Encipherment");
+    KEY_USAGE(MBEDTLS_X509_KU_KEY_AGREEMENT,        "Key Agreement");
+    KEY_USAGE(MBEDTLS_X509_KU_KEY_CERT_SIGN,        "Key Cert Sign");
+    KEY_USAGE(MBEDTLS_X509_KU_CRL_SIGN,             "CRL Sign");
+    KEY_USAGE(MBEDTLS_X509_KU_ENCIPHER_ONLY,        "Encipher Only");
+    KEY_USAGE(MBEDTLS_X509_KU_DECIPHER_ONLY,        "Decipher Only");
 
     *size = n;
     *buf = p;
 
-    return( 0 );
+    return 0;
 }
 
-static int x509_info_ext_key_usage( char **buf, size_t *size,
-                                    const mbedtls_x509_sequence *extended_key_usage )
+static int x509_info_ext_key_usage(char **buf, size_t *size,
+                                   const mbedtls_x509_sequence *extended_key_usage)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     const char *desc;
@@ -2003,12 +2018,12 @@
     const mbedtls_x509_sequence *cur = extended_key_usage;
     const char *sep = "";
 
-    while( cur != NULL )
-    {
-        if( mbedtls_oid_get_extended_key_usage( &cur->buf, &desc ) != 0 )
+    while (cur != NULL) {
+        if (mbedtls_oid_get_extended_key_usage(&cur->buf, &desc) != 0) {
             desc = "???";
+        }
 
-        ret = mbedtls_snprintf( p, n, "%s%s", sep, desc );
+        ret = mbedtls_snprintf(p, n, "%s%s", sep, desc);
         MBEDTLS_X509_SAFE_SNPRINTF;
 
         sep = ", ";
@@ -2019,11 +2034,11 @@
     *size = n;
     *buf = p;
 
-    return( 0 );
+    return 0;
 }
 
-static int x509_info_cert_policies( char **buf, size_t *size,
-                                    const mbedtls_x509_sequence *certificate_policies )
+static int x509_info_cert_policies(char **buf, size_t *size,
+                                   const mbedtls_x509_sequence *certificate_policies)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     const char *desc;
@@ -2032,12 +2047,12 @@
     const mbedtls_x509_sequence *cur = certificate_policies;
     const char *sep = "";
 
-    while( cur != NULL )
-    {
-        if( mbedtls_oid_get_certificate_policies( &cur->buf, &desc ) != 0 )
+    while (cur != NULL) {
+        if (mbedtls_oid_get_certificate_policies(&cur->buf, &desc) != 0) {
             desc = "???";
+        }
 
-        ret = mbedtls_snprintf( p, n, "%s%s", sep, desc );
+        ret = mbedtls_snprintf(p, n, "%s%s", sep, desc);
         MBEDTLS_X509_SAFE_SNPRINTF;
 
         sep = ", ";
@@ -2048,7 +2063,7 @@
     *size = n;
     *buf = p;
 
-    return( 0 );
+    return 0;
 }
 
 /*
@@ -2056,8 +2071,8 @@
  */
 #define BEFORE_COLON    18
 #define BC              "18"
-int mbedtls_x509_crt_info( char *buf, size_t size, const char *prefix,
-                   const mbedtls_x509_crt *crt )
+int mbedtls_x509_crt_info(char *buf, size_t size, const char *prefix,
+                          const mbedtls_x509_crt *crt)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t n;
@@ -2067,136 +2082,132 @@
     p = buf;
     n = size;
 
-    if( NULL == crt )
-    {
-        ret = mbedtls_snprintf( p, n, "\nCertificate is uninitialised!\n" );
+    if (NULL == crt) {
+        ret = mbedtls_snprintf(p, n, "\nCertificate is uninitialised!\n");
         MBEDTLS_X509_SAFE_SNPRINTF;
 
-        return( (int) ( size - n ) );
+        return (int) (size - n);
     }
 
-    ret = mbedtls_snprintf( p, n, "%scert. version     : %d\n",
-                               prefix, crt->version );
+    ret = mbedtls_snprintf(p, n, "%scert. version     : %d\n",
+                           prefix, crt->version);
     MBEDTLS_X509_SAFE_SNPRINTF;
-    ret = mbedtls_snprintf( p, n, "%sserial number     : ",
-                               prefix );
+    ret = mbedtls_snprintf(p, n, "%sserial number     : ",
+                           prefix);
     MBEDTLS_X509_SAFE_SNPRINTF;
 
-    ret = mbedtls_x509_serial_gets( p, n, &crt->serial );
+    ret = mbedtls_x509_serial_gets(p, n, &crt->serial);
     MBEDTLS_X509_SAFE_SNPRINTF;
 
-    ret = mbedtls_snprintf( p, n, "\n%sissuer name       : ", prefix );
+    ret = mbedtls_snprintf(p, n, "\n%sissuer name       : ", prefix);
     MBEDTLS_X509_SAFE_SNPRINTF;
-    ret = mbedtls_x509_dn_gets( p, n, &crt->issuer  );
+    ret = mbedtls_x509_dn_gets(p, n, &crt->issuer);
     MBEDTLS_X509_SAFE_SNPRINTF;
 
-    ret = mbedtls_snprintf( p, n, "\n%ssubject name      : ", prefix );
+    ret = mbedtls_snprintf(p, n, "\n%ssubject name      : ", prefix);
     MBEDTLS_X509_SAFE_SNPRINTF;
-    ret = mbedtls_x509_dn_gets( p, n, &crt->subject );
+    ret = mbedtls_x509_dn_gets(p, n, &crt->subject);
     MBEDTLS_X509_SAFE_SNPRINTF;
 
-    ret = mbedtls_snprintf( p, n, "\n%sissued  on        : " \
-                   "%04d-%02d-%02d %02d:%02d:%02d", prefix,
-                   crt->valid_from.year, crt->valid_from.mon,
-                   crt->valid_from.day,  crt->valid_from.hour,
-                   crt->valid_from.min,  crt->valid_from.sec );
+    ret = mbedtls_snprintf(p, n, "\n%sissued  on        : " \
+                                 "%04d-%02d-%02d %02d:%02d:%02d", prefix,
+                           crt->valid_from.year, crt->valid_from.mon,
+                           crt->valid_from.day,  crt->valid_from.hour,
+                           crt->valid_from.min,  crt->valid_from.sec);
     MBEDTLS_X509_SAFE_SNPRINTF;
 
-    ret = mbedtls_snprintf( p, n, "\n%sexpires on        : " \
-                   "%04d-%02d-%02d %02d:%02d:%02d", prefix,
-                   crt->valid_to.year, crt->valid_to.mon,
-                   crt->valid_to.day,  crt->valid_to.hour,
-                   crt->valid_to.min,  crt->valid_to.sec );
+    ret = mbedtls_snprintf(p, n, "\n%sexpires on        : " \
+                                 "%04d-%02d-%02d %02d:%02d:%02d", prefix,
+                           crt->valid_to.year, crt->valid_to.mon,
+                           crt->valid_to.day,  crt->valid_to.hour,
+                           crt->valid_to.min,  crt->valid_to.sec);
     MBEDTLS_X509_SAFE_SNPRINTF;
 
-    ret = mbedtls_snprintf( p, n, "\n%ssigned using      : ", prefix );
+    ret = mbedtls_snprintf(p, n, "\n%ssigned using      : ", prefix);
     MBEDTLS_X509_SAFE_SNPRINTF;
 
-    ret = mbedtls_x509_sig_alg_gets( p, n, &crt->sig_oid, crt->sig_pk,
-                             crt->sig_md, crt->sig_opts );
+    ret = mbedtls_x509_sig_alg_gets(p, n, &crt->sig_oid, crt->sig_pk,
+                                    crt->sig_md, crt->sig_opts);
     MBEDTLS_X509_SAFE_SNPRINTF;
 
     /* Key size */
-    if( ( ret = mbedtls_x509_key_size_helper( key_size_str, BEFORE_COLON,
-                                      mbedtls_pk_get_name( &crt->pk ) ) ) != 0 )
-    {
-        return( ret );
+    if ((ret = mbedtls_x509_key_size_helper(key_size_str, BEFORE_COLON,
+                                            mbedtls_pk_get_name(&crt->pk))) != 0) {
+        return ret;
     }
 
-    ret = mbedtls_snprintf( p, n, "\n%s%-" BC "s: %d bits", prefix, key_size_str,
-                          (int) mbedtls_pk_get_bitlen( &crt->pk ) );
+    ret = mbedtls_snprintf(p, n, "\n%s%-" BC "s: %d bits", prefix, key_size_str,
+                           (int) mbedtls_pk_get_bitlen(&crt->pk));
     MBEDTLS_X509_SAFE_SNPRINTF;
 
     /*
      * Optional extensions
      */
 
-    if( crt->ext_types & MBEDTLS_X509_EXT_BASIC_CONSTRAINTS )
-    {
-        ret = mbedtls_snprintf( p, n, "\n%sbasic constraints : CA=%s", prefix,
-                        crt->ca_istrue ? "true" : "false" );
+    if (crt->ext_types & MBEDTLS_X509_EXT_BASIC_CONSTRAINTS) {
+        ret = mbedtls_snprintf(p, n, "\n%sbasic constraints : CA=%s", prefix,
+                               crt->ca_istrue ? "true" : "false");
         MBEDTLS_X509_SAFE_SNPRINTF;
 
-        if( crt->max_pathlen > 0 )
-        {
-            ret = mbedtls_snprintf( p, n, ", max_pathlen=%d", crt->max_pathlen - 1 );
+        if (crt->max_pathlen > 0) {
+            ret = mbedtls_snprintf(p, n, ", max_pathlen=%d", crt->max_pathlen - 1);
             MBEDTLS_X509_SAFE_SNPRINTF;
         }
     }
 
-    if( crt->ext_types & MBEDTLS_X509_EXT_SUBJECT_ALT_NAME )
-    {
-        ret = mbedtls_snprintf( p, n, "\n%ssubject alt name  :", prefix );
+    if (crt->ext_types & MBEDTLS_X509_EXT_SUBJECT_ALT_NAME) {
+        ret = mbedtls_snprintf(p, n, "\n%ssubject alt name  :", prefix);
         MBEDTLS_X509_SAFE_SNPRINTF;
 
-        if( ( ret = x509_info_subject_alt_name( &p, &n,
-                                                &crt->subject_alt_names,
-                                                prefix ) ) != 0 )
-            return( ret );
+        if ((ret = x509_info_subject_alt_name(&p, &n,
+                                              &crt->subject_alt_names,
+                                              prefix)) != 0) {
+            return ret;
+        }
     }
 
-    if( crt->ext_types & MBEDTLS_X509_EXT_NS_CERT_TYPE )
-    {
-        ret = mbedtls_snprintf( p, n, "\n%scert. type        : ", prefix );
+    if (crt->ext_types & MBEDTLS_X509_EXT_NS_CERT_TYPE) {
+        ret = mbedtls_snprintf(p, n, "\n%scert. type        : ", prefix);
         MBEDTLS_X509_SAFE_SNPRINTF;
 
-        if( ( ret = x509_info_cert_type( &p, &n, crt->ns_cert_type ) ) != 0 )
-            return( ret );
+        if ((ret = x509_info_cert_type(&p, &n, crt->ns_cert_type)) != 0) {
+            return ret;
+        }
     }
 
-    if( crt->ext_types & MBEDTLS_X509_EXT_KEY_USAGE )
-    {
-        ret = mbedtls_snprintf( p, n, "\n%skey usage         : ", prefix );
+    if (crt->ext_types & MBEDTLS_X509_EXT_KEY_USAGE) {
+        ret = mbedtls_snprintf(p, n, "\n%skey usage         : ", prefix);
         MBEDTLS_X509_SAFE_SNPRINTF;
 
-        if( ( ret = x509_info_key_usage( &p, &n, crt->key_usage ) ) != 0 )
-            return( ret );
+        if ((ret = x509_info_key_usage(&p, &n, crt->key_usage)) != 0) {
+            return ret;
+        }
     }
 
-    if( crt->ext_types & MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE )
-    {
-        ret = mbedtls_snprintf( p, n, "\n%sext key usage     : ", prefix );
+    if (crt->ext_types & MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE) {
+        ret = mbedtls_snprintf(p, n, "\n%sext key usage     : ", prefix);
         MBEDTLS_X509_SAFE_SNPRINTF;
 
-        if( ( ret = x509_info_ext_key_usage( &p, &n,
-                                             &crt->ext_key_usage ) ) != 0 )
-            return( ret );
+        if ((ret = x509_info_ext_key_usage(&p, &n,
+                                           &crt->ext_key_usage)) != 0) {
+            return ret;
+        }
     }
 
-    if( crt->ext_types & MBEDTLS_OID_X509_EXT_CERTIFICATE_POLICIES )
-    {
-        ret = mbedtls_snprintf( p, n, "\n%scertificate policies : ", prefix );
+    if (crt->ext_types & MBEDTLS_OID_X509_EXT_CERTIFICATE_POLICIES) {
+        ret = mbedtls_snprintf(p, n, "\n%scertificate policies : ", prefix);
         MBEDTLS_X509_SAFE_SNPRINTF;
 
-        if( ( ret = x509_info_cert_policies( &p, &n,
-                                             &crt->certificate_policies ) ) != 0 )
-            return( ret );
+        if ((ret = x509_info_cert_policies(&p, &n,
+                                           &crt->certificate_policies)) != 0) {
+            return ret;
+        }
     }
 
-    ret = mbedtls_snprintf( p, n, "\n" );
+    ret = mbedtls_snprintf(p, n, "\n");
     MBEDTLS_X509_SAFE_SNPRINTF;
 
-    return( (int) ( size - n ) );
+    return (int) (size - n);
 }
 
 struct x509_crt_verify_string {
@@ -2207,8 +2218,10 @@
 static const struct x509_crt_verify_string x509_crt_verify_strings[] = {
     { MBEDTLS_X509_BADCERT_EXPIRED,       "The certificate validity has expired" },
     { MBEDTLS_X509_BADCERT_REVOKED,       "The certificate has been revoked (is on a CRL)" },
-    { MBEDTLS_X509_BADCERT_CN_MISMATCH,   "The certificate Common Name (CN) does not match with the expected CN" },
-    { MBEDTLS_X509_BADCERT_NOT_TRUSTED,   "The certificate is not correctly signed by the trusted CA" },
+    { MBEDTLS_X509_BADCERT_CN_MISMATCH,
+      "The certificate Common Name (CN) does not match with the expected CN" },
+    { MBEDTLS_X509_BADCERT_NOT_TRUSTED,
+      "The certificate is not correctly signed by the trusted CA" },
     { MBEDTLS_X509_BADCRL_NOT_TRUSTED,    "The CRL is not correctly signed by the trusted CA" },
     { MBEDTLS_X509_BADCRL_EXPIRED,        "The CRL is expired" },
     { MBEDTLS_X509_BADCERT_MISSING,       "Certificate was missing" },
@@ -2220,96 +2233,102 @@
     { MBEDTLS_X509_BADCERT_EXT_KEY_USAGE, "Usage does not match the extendedKeyUsage extension" },
     { MBEDTLS_X509_BADCERT_NS_CERT_TYPE,  "Usage does not match the nsCertType extension" },
     { MBEDTLS_X509_BADCERT_BAD_MD,        "The certificate is signed with an unacceptable hash." },
-    { MBEDTLS_X509_BADCERT_BAD_PK,        "The certificate is signed with an unacceptable PK alg (eg RSA vs ECDSA)." },
-    { MBEDTLS_X509_BADCERT_BAD_KEY,       "The certificate is signed with an unacceptable key (eg bad curve, RSA too short)." },
+    { MBEDTLS_X509_BADCERT_BAD_PK,
+      "The certificate is signed with an unacceptable PK alg (eg RSA vs ECDSA)." },
+    { MBEDTLS_X509_BADCERT_BAD_KEY,
+      "The certificate is signed with an unacceptable key (eg bad curve, RSA too short)." },
     { MBEDTLS_X509_BADCRL_BAD_MD,         "The CRL is signed with an unacceptable hash." },
-    { MBEDTLS_X509_BADCRL_BAD_PK,         "The CRL is signed with an unacceptable PK alg (eg RSA vs ECDSA)." },
-    { MBEDTLS_X509_BADCRL_BAD_KEY,        "The CRL is signed with an unacceptable key (eg bad curve, RSA too short)." },
+    { MBEDTLS_X509_BADCRL_BAD_PK,
+      "The CRL is signed with an unacceptable PK alg (eg RSA vs ECDSA)." },
+    { MBEDTLS_X509_BADCRL_BAD_KEY,
+      "The CRL is signed with an unacceptable key (eg bad curve, RSA too short)." },
     { 0, NULL }
 };
 
-int mbedtls_x509_crt_verify_info( char *buf, size_t size, const char *prefix,
-                          uint32_t flags )
+int mbedtls_x509_crt_verify_info(char *buf, size_t size, const char *prefix,
+                                 uint32_t flags)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     const struct x509_crt_verify_string *cur;
     char *p = buf;
     size_t n = size;
 
-    for( cur = x509_crt_verify_strings; cur->string != NULL ; cur++ )
-    {
-        if( ( flags & cur->code ) == 0 )
+    for (cur = x509_crt_verify_strings; cur->string != NULL; cur++) {
+        if ((flags & cur->code) == 0) {
             continue;
+        }
 
-        ret = mbedtls_snprintf( p, n, "%s%s\n", prefix, cur->string );
+        ret = mbedtls_snprintf(p, n, "%s%s\n", prefix, cur->string);
         MBEDTLS_X509_SAFE_SNPRINTF;
         flags ^= cur->code;
     }
 
-    if( flags != 0 )
-    {
-        ret = mbedtls_snprintf( p, n, "%sUnknown reason "
-                                       "(this should not happen)\n", prefix );
+    if (flags != 0) {
+        ret = mbedtls_snprintf(p, n, "%sUnknown reason "
+                                     "(this should not happen)\n", prefix);
         MBEDTLS_X509_SAFE_SNPRINTF;
     }
 
-    return( (int) ( size - n ) );
+    return (int) (size - n);
 }
 
 #if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
-int mbedtls_x509_crt_check_key_usage( const mbedtls_x509_crt *crt,
-                                      unsigned int usage )
+int mbedtls_x509_crt_check_key_usage(const mbedtls_x509_crt *crt,
+                                     unsigned int usage)
 {
     unsigned int usage_must, usage_may;
     unsigned int may_mask = MBEDTLS_X509_KU_ENCIPHER_ONLY
-                          | MBEDTLS_X509_KU_DECIPHER_ONLY;
+                            | MBEDTLS_X509_KU_DECIPHER_ONLY;
 
-    if( ( crt->ext_types & MBEDTLS_X509_EXT_KEY_USAGE ) == 0 )
-        return( 0 );
+    if ((crt->ext_types & MBEDTLS_X509_EXT_KEY_USAGE) == 0) {
+        return 0;
+    }
 
     usage_must = usage & ~may_mask;
 
-    if( ( ( crt->key_usage & ~may_mask ) & usage_must ) != usage_must )
-        return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
+    if (((crt->key_usage & ~may_mask) & usage_must) != usage_must) {
+        return MBEDTLS_ERR_X509_BAD_INPUT_DATA;
+    }
 
     usage_may = usage & may_mask;
 
-    if( ( ( crt->key_usage & may_mask ) | usage_may ) != usage_may )
-        return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
+    if (((crt->key_usage & may_mask) | usage_may) != usage_may) {
+        return MBEDTLS_ERR_X509_BAD_INPUT_DATA;
+    }
 
-    return( 0 );
+    return 0;
 }
 #endif
 
 #if defined(MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE)
-int mbedtls_x509_crt_check_extended_key_usage( const mbedtls_x509_crt *crt,
-                                       const char *usage_oid,
-                                       size_t usage_len )
+int mbedtls_x509_crt_check_extended_key_usage(const mbedtls_x509_crt *crt,
+                                              const char *usage_oid,
+                                              size_t usage_len)
 {
     const mbedtls_x509_sequence *cur;
 
     /* Extension is not mandatory, absent means no restriction */
-    if( ( crt->ext_types & MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE ) == 0 )
-        return( 0 );
+    if ((crt->ext_types & MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE) == 0) {
+        return 0;
+    }
 
     /*
      * Look for the requested usage (or wildcard ANY) in our list
      */
-    for( cur = &crt->ext_key_usage; cur != NULL; cur = cur->next )
-    {
+    for (cur = &crt->ext_key_usage; cur != NULL; cur = cur->next) {
         const mbedtls_x509_buf *cur_oid = &cur->buf;
 
-        if( cur_oid->len == usage_len &&
-            memcmp( cur_oid->p, usage_oid, usage_len ) == 0 )
-        {
-            return( 0 );
+        if (cur_oid->len == usage_len &&
+            memcmp(cur_oid->p, usage_oid, usage_len) == 0) {
+            return 0;
         }
 
-        if( MBEDTLS_OID_CMP( MBEDTLS_OID_ANY_EXTENDED_KEY_USAGE, cur_oid ) == 0 )
-            return( 0 );
+        if (MBEDTLS_OID_CMP(MBEDTLS_OID_ANY_EXTENDED_KEY_USAGE, cur_oid) == 0) {
+            return 0;
+        }
     }
 
-    return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
+    return MBEDTLS_ERR_X509_BAD_INPUT_DATA;
 }
 #endif /* MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE */
 
@@ -2317,44 +2336,41 @@
 /*
  * Return 1 if the certificate is revoked, or 0 otherwise.
  */
-int mbedtls_x509_crt_is_revoked( const mbedtls_x509_crt *crt, const mbedtls_x509_crl *crl )
+int mbedtls_x509_crt_is_revoked(const mbedtls_x509_crt *crt, const mbedtls_x509_crl *crl)
 {
     const mbedtls_x509_crl_entry *cur = &crl->entry;
 
-    while( cur != NULL && cur->serial.len != 0 )
-    {
-        if( crt->serial.len == cur->serial.len &&
-            memcmp( crt->serial.p, cur->serial.p, crt->serial.len ) == 0 )
-        {
-            return( 1 );
+    while (cur != NULL && cur->serial.len != 0) {
+        if (crt->serial.len == cur->serial.len &&
+            memcmp(crt->serial.p, cur->serial.p, crt->serial.len) == 0) {
+            return 1;
         }
 
         cur = cur->next;
     }
 
-    return( 0 );
+    return 0;
 }
 
 /*
  * Check that the given certificate is not revoked according to the CRL.
  * Skip validation if no CRL for the given CA is present.
  */
-static int x509_crt_verifycrl( mbedtls_x509_crt *crt, mbedtls_x509_crt *ca,
-                               mbedtls_x509_crl *crl_list,
-                               const mbedtls_x509_crt_profile *profile )
+static int x509_crt_verifycrl(mbedtls_x509_crt *crt, mbedtls_x509_crt *ca,
+                              mbedtls_x509_crl *crl_list,
+                              const mbedtls_x509_crt_profile *profile)
 {
     int flags = 0;
     unsigned char hash[MBEDTLS_MD_MAX_SIZE];
     const mbedtls_md_info_t *md_info;
 
-    if( ca == NULL )
-        return( flags );
+    if (ca == NULL) {
+        return flags;
+    }
 
-    while( crl_list != NULL )
-    {
-        if( crl_list->version == 0 ||
-            x509_name_cmp( &crl_list->issuer, &ca->subject ) != 0 )
-        {
+    while (crl_list != NULL) {
+        if (crl_list->version == 0 ||
+            x509_name_cmp(&crl_list->issuer, &ca->subject) != 0) {
             crl_list = crl_list->next;
             continue;
         }
@@ -2363,9 +2379,8 @@
          * Check if the CA is configured to sign CRLs
          */
 #if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
-        if( mbedtls_x509_crt_check_key_usage( ca,
-                                              MBEDTLS_X509_KU_CRL_SIGN ) != 0 )
-        {
+        if (mbedtls_x509_crt_check_key_usage(ca,
+                                             MBEDTLS_X509_KU_CRL_SIGN) != 0) {
             flags |= MBEDTLS_X509_BADCRL_NOT_TRUSTED;
             break;
         }
@@ -2374,27 +2389,28 @@
         /*
          * Check if CRL is correctly signed by the trusted CA
          */
-        if( x509_profile_check_md_alg( profile, crl_list->sig_md ) != 0 )
+        if (x509_profile_check_md_alg(profile, crl_list->sig_md) != 0) {
             flags |= MBEDTLS_X509_BADCRL_BAD_MD;
+        }
 
-        if( x509_profile_check_pk_alg( profile, crl_list->sig_pk ) != 0 )
+        if (x509_profile_check_pk_alg(profile, crl_list->sig_pk) != 0) {
             flags |= MBEDTLS_X509_BADCRL_BAD_PK;
+        }
 
-        md_info = mbedtls_md_info_from_type( crl_list->sig_md );
-        if( mbedtls_md( md_info, crl_list->tbs.p, crl_list->tbs.len, hash ) != 0 )
-        {
+        md_info = mbedtls_md_info_from_type(crl_list->sig_md);
+        if (mbedtls_md(md_info, crl_list->tbs.p, crl_list->tbs.len, hash) != 0) {
             /* Note: this can't happen except after an internal error */
             flags |= MBEDTLS_X509_BADCRL_NOT_TRUSTED;
             break;
         }
 
-        if( x509_profile_check_key( profile, &ca->pk ) != 0 )
+        if (x509_profile_check_key(profile, &ca->pk) != 0) {
             flags |= MBEDTLS_X509_BADCERT_BAD_KEY;
+        }
 
-        if( mbedtls_pk_verify_ext( crl_list->sig_pk, crl_list->sig_opts, &ca->pk,
-                           crl_list->sig_md, hash, mbedtls_md_get_size( md_info ),
-                           crl_list->sig.p, crl_list->sig.len ) != 0 )
-        {
+        if (mbedtls_pk_verify_ext(crl_list->sig_pk, crl_list->sig_opts, &ca->pk,
+                                  crl_list->sig_md, hash, mbedtls_md_get_size(md_info),
+                                  crl_list->sig.p, crl_list->sig.len) != 0) {
             flags |= MBEDTLS_X509_BADCRL_NOT_TRUSTED;
             break;
         }
@@ -2402,17 +2418,18 @@
         /*
          * Check for validity of CRL (Do not drop out)
          */
-        if( mbedtls_x509_time_is_past( &crl_list->next_update ) )
+        if (mbedtls_x509_time_is_past(&crl_list->next_update)) {
             flags |= MBEDTLS_X509_BADCRL_EXPIRED;
+        }
 
-        if( mbedtls_x509_time_is_future( &crl_list->this_update ) )
+        if (mbedtls_x509_time_is_future(&crl_list->this_update)) {
             flags |= MBEDTLS_X509_BADCRL_FUTURE;
+        }
 
         /*
          * Check if certificate is revoked
          */
-        if( mbedtls_x509_crt_is_revoked( crt, crl_list ) )
-        {
+        if (mbedtls_x509_crt_is_revoked(crt, crl_list)) {
             flags |= MBEDTLS_X509_BADCERT_REVOKED;
             break;
         }
@@ -2420,64 +2437,64 @@
         crl_list = crl_list->next;
     }
 
-    return( flags );
+    return flags;
 }
 #endif /* MBEDTLS_X509_CRL_PARSE_C */
 
 /*
  * Check the signature of a certificate by its parent
  */
-static int x509_crt_check_signature( const mbedtls_x509_crt *child,
-                                     mbedtls_x509_crt *parent,
-                                     mbedtls_x509_crt_restart_ctx *rs_ctx )
+static int x509_crt_check_signature(const mbedtls_x509_crt *child,
+                                    mbedtls_x509_crt *parent,
+                                    mbedtls_x509_crt_restart_ctx *rs_ctx)
 {
     unsigned char hash[MBEDTLS_MD_MAX_SIZE];
     size_t hash_len;
 #if !defined(MBEDTLS_USE_PSA_CRYPTO)
     const mbedtls_md_info_t *md_info;
-    md_info = mbedtls_md_info_from_type( child->sig_md );
-    hash_len = mbedtls_md_get_size( md_info );
+    md_info = mbedtls_md_info_from_type(child->sig_md);
+    hash_len = mbedtls_md_get_size(md_info);
 
     /* Note: hash errors can happen only after an internal error */
-    if( mbedtls_md( md_info, child->tbs.p, child->tbs.len, hash ) != 0 )
-        return( -1 );
+    if (mbedtls_md(md_info, child->tbs.p, child->tbs.len, hash) != 0) {
+        return -1;
+    }
 #else
     psa_hash_operation_t hash_operation = PSA_HASH_OPERATION_INIT;
-    psa_algorithm_t hash_alg = mbedtls_psa_translate_md( child->sig_md );
+    psa_algorithm_t hash_alg = mbedtls_psa_translate_md(child->sig_md);
 
-    if( psa_hash_setup( &hash_operation, hash_alg ) != PSA_SUCCESS )
-        return( -1 );
-
-    if( psa_hash_update( &hash_operation, child->tbs.p, child->tbs.len )
-        != PSA_SUCCESS )
-    {
-        return( -1 );
+    if (psa_hash_setup(&hash_operation, hash_alg) != PSA_SUCCESS) {
+        return -1;
     }
 
-    if( psa_hash_finish( &hash_operation, hash, sizeof( hash ), &hash_len )
-        != PSA_SUCCESS )
-    {
-        return( -1 );
+    if (psa_hash_update(&hash_operation, child->tbs.p, child->tbs.len)
+        != PSA_SUCCESS) {
+        return -1;
+    }
+
+    if (psa_hash_finish(&hash_operation, hash, sizeof(hash), &hash_len)
+        != PSA_SUCCESS) {
+        return -1;
     }
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
     /* Skip expensive computation on obvious mismatch */
-    if( ! mbedtls_pk_can_do( &parent->pk, child->sig_pk ) )
-        return( -1 );
+    if (!mbedtls_pk_can_do(&parent->pk, child->sig_pk)) {
+        return -1;
+    }
 
 #if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
-    if( rs_ctx != NULL && child->sig_pk == MBEDTLS_PK_ECDSA )
-    {
-        return( mbedtls_pk_verify_restartable( &parent->pk,
-                    child->sig_md, hash, hash_len,
-                    child->sig.p, child->sig.len, &rs_ctx->pk ) );
+    if (rs_ctx != NULL && child->sig_pk == MBEDTLS_PK_ECDSA) {
+        return mbedtls_pk_verify_restartable(&parent->pk,
+                                             child->sig_md, hash, hash_len,
+                                             child->sig.p, child->sig.len, &rs_ctx->pk);
     }
 #else
     (void) rs_ctx;
 #endif
 
-    return( mbedtls_pk_verify_ext( child->sig_pk, child->sig_opts, &parent->pk,
-                child->sig_md, hash, hash_len,
-                child->sig.p, child->sig.len ) );
+    return mbedtls_pk_verify_ext(child->sig_pk, child->sig_opts, &parent->pk,
+                                 child->sig_md, hash, hash_len,
+                                 child->sig.p, child->sig.len);
 }
 
 /*
@@ -2486,35 +2503,37 @@
  *
  * top means parent is a locally-trusted certificate
  */
-static int x509_crt_check_parent( const mbedtls_x509_crt *child,
-                                  const mbedtls_x509_crt *parent,
-                                  int top )
+static int x509_crt_check_parent(const mbedtls_x509_crt *child,
+                                 const mbedtls_x509_crt *parent,
+                                 int top)
 {
     int need_ca_bit;
 
     /* Parent must be the issuer */
-    if( x509_name_cmp( &child->issuer, &parent->subject ) != 0 )
-        return( -1 );
+    if (x509_name_cmp(&child->issuer, &parent->subject) != 0) {
+        return -1;
+    }
 
     /* Parent must have the basicConstraints CA bit set as a general rule */
     need_ca_bit = 1;
 
     /* Exception: v1/v2 certificates that are locally trusted. */
-    if( top && parent->version < 3 )
+    if (top && parent->version < 3) {
         need_ca_bit = 0;
+    }
 
-    if( need_ca_bit && ! parent->ca_istrue )
-        return( -1 );
+    if (need_ca_bit && !parent->ca_istrue) {
+        return -1;
+    }
 
 #if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
-    if( need_ca_bit &&
-        mbedtls_x509_crt_check_key_usage( parent, MBEDTLS_X509_KU_KEY_CERT_SIGN ) != 0 )
-    {
-        return( -1 );
+    if (need_ca_bit &&
+        mbedtls_x509_crt_check_key_usage(parent, MBEDTLS_X509_KU_KEY_CERT_SIGN) != 0) {
+        return -1;
     }
 #endif
 
-    return( 0 );
+    return 0;
 }
 
 /*
@@ -2561,14 +2580,14 @@
  *  - MBEDTLS_ERR_ECP_IN_PROGRESS otherwise
  */
 static int x509_crt_find_parent_in(
-                        mbedtls_x509_crt *child,
-                        mbedtls_x509_crt *candidates,
-                        mbedtls_x509_crt **r_parent,
-                        int *r_signature_is_good,
-                        int top,
-                        unsigned path_cnt,
-                        unsigned self_cnt,
-                        mbedtls_x509_crt_restart_ctx *rs_ctx )
+    mbedtls_x509_crt *child,
+    mbedtls_x509_crt *candidates,
+    mbedtls_x509_crt **r_parent,
+    int *r_signature_is_good,
+    int top,
+    unsigned path_cnt,
+    unsigned self_cnt,
+    mbedtls_x509_crt_restart_ctx *rs_ctx)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     mbedtls_x509_crt *parent, *fallback_parent;
@@ -2576,8 +2595,7 @@
 
 #if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
     /* did we have something in progress? */
-    if( rs_ctx != NULL && rs_ctx->parent != NULL )
-    {
+    if (rs_ctx != NULL && rs_ctx->parent != NULL) {
         /* restore saved state */
         parent = rs_ctx->parent;
         fallback_parent = rs_ctx->fallback_parent;
@@ -2596,16 +2614,15 @@
     fallback_parent = NULL;
     fallback_signature_is_good = 0;
 
-    for( parent = candidates; parent != NULL; parent = parent->next )
-    {
+    for (parent = candidates; parent != NULL; parent = parent->next) {
         /* basic parenting skills (name, CA bit, key usage) */
-        if( x509_crt_check_parent( child, parent, top ) != 0 )
+        if (x509_crt_check_parent(child, parent, top) != 0) {
             continue;
+        }
 
         /* +1 because stored max_pathlen is 1 higher that the actual value */
-        if( parent->max_pathlen > 0 &&
-            (size_t) parent->max_pathlen < 1 + path_cnt - self_cnt )
-        {
+        if (parent->max_pathlen > 0 &&
+            (size_t) parent->max_pathlen < 1 + path_cnt - self_cnt) {
             continue;
         }
 
@@ -2613,32 +2630,30 @@
 #if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
 check_signature:
 #endif
-        ret = x509_crt_check_signature( child, parent, rs_ctx );
+        ret = x509_crt_check_signature(child, parent, rs_ctx);
 
 #if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
-        if( rs_ctx != NULL && ret == MBEDTLS_ERR_ECP_IN_PROGRESS )
-        {
+        if (rs_ctx != NULL && ret == MBEDTLS_ERR_ECP_IN_PROGRESS) {
             /* save state */
             rs_ctx->parent = parent;
             rs_ctx->fallback_parent = fallback_parent;
             rs_ctx->fallback_signature_is_good = fallback_signature_is_good;
 
-            return( ret );
+            return ret;
         }
 #else
         (void) ret;
 #endif
 
         signature_is_good = ret == 0;
-        if( top && ! signature_is_good )
+        if (top && !signature_is_good) {
             continue;
+        }
 
         /* optional time check */
-        if( mbedtls_x509_time_is_past( &parent->valid_to ) ||
-            mbedtls_x509_time_is_future( &parent->valid_from ) )
-        {
-            if( fallback_parent == NULL )
-            {
+        if (mbedtls_x509_time_is_past(&parent->valid_to) ||
+            mbedtls_x509_time_is_future(&parent->valid_from)) {
+            if (fallback_parent == NULL) {
                 fallback_parent = parent;
                 fallback_signature_is_good = signature_is_good;
             }
@@ -2652,13 +2667,12 @@
         break;
     }
 
-    if( parent == NULL )
-    {
+    if (parent == NULL) {
         *r_parent = fallback_parent;
         *r_signature_is_good = fallback_signature_is_good;
     }
 
-    return( 0 );
+    return 0;
 }
 
 /*
@@ -2684,14 +2698,14 @@
  *  - MBEDTLS_ERR_ECP_IN_PROGRESS otherwise
  */
 static int x509_crt_find_parent(
-                        mbedtls_x509_crt *child,
-                        mbedtls_x509_crt *trust_ca,
-                        mbedtls_x509_crt **parent,
-                        int *parent_is_trusted,
-                        int *signature_is_good,
-                        unsigned path_cnt,
-                        unsigned self_cnt,
-                        mbedtls_x509_crt_restart_ctx *rs_ctx )
+    mbedtls_x509_crt *child,
+    mbedtls_x509_crt *trust_ca,
+    mbedtls_x509_crt **parent,
+    int *parent_is_trusted,
+    int *signature_is_good,
+    unsigned path_cnt,
+    unsigned self_cnt,
+    mbedtls_x509_crt_restart_ctx *rs_ctx)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     mbedtls_x509_crt *search_list;
@@ -2700,48 +2714,46 @@
 
 #if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
     /* restore then clear saved state if we have some stored */
-    if( rs_ctx != NULL && rs_ctx->parent_is_trusted != -1 )
-    {
+    if (rs_ctx != NULL && rs_ctx->parent_is_trusted != -1) {
         *parent_is_trusted = rs_ctx->parent_is_trusted;
         rs_ctx->parent_is_trusted = -1;
     }
 #endif
 
-    while( 1 ) {
+    while (1) {
         search_list = *parent_is_trusted ? trust_ca : child->next;
 
-        ret = x509_crt_find_parent_in( child, search_list,
-                                       parent, signature_is_good,
-                                       *parent_is_trusted,
-                                       path_cnt, self_cnt, rs_ctx );
+        ret = x509_crt_find_parent_in(child, search_list,
+                                      parent, signature_is_good,
+                                      *parent_is_trusted,
+                                      path_cnt, self_cnt, rs_ctx);
 
 #if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
-        if( rs_ctx != NULL && ret == MBEDTLS_ERR_ECP_IN_PROGRESS )
-        {
+        if (rs_ctx != NULL && ret == MBEDTLS_ERR_ECP_IN_PROGRESS) {
             /* save state */
             rs_ctx->parent_is_trusted = *parent_is_trusted;
-            return( ret );
+            return ret;
         }
 #else
         (void) ret;
 #endif
 
         /* stop here if found or already in second iteration */
-        if( *parent != NULL || *parent_is_trusted == 0 )
+        if (*parent != NULL || *parent_is_trusted == 0) {
             break;
+        }
 
         /* prepare second iteration */
         *parent_is_trusted = 0;
     }
 
     /* extra precaution against mistakes in the caller */
-    if( *parent == NULL )
-    {
+    if (*parent == NULL) {
         *parent_is_trusted = 0;
         *signature_is_good = 0;
     }
 
-    return( 0 );
+    return 0;
 }
 
 /*
@@ -2751,27 +2763,26 @@
  * check for self-issued as self-signatures are not checked)
  */
 static int x509_crt_check_ee_locally_trusted(
-                    mbedtls_x509_crt *crt,
-                    mbedtls_x509_crt *trust_ca )
+    mbedtls_x509_crt *crt,
+    mbedtls_x509_crt *trust_ca)
 {
     mbedtls_x509_crt *cur;
 
     /* must be self-issued */
-    if( x509_name_cmp( &crt->issuer, &crt->subject ) != 0 )
-        return( -1 );
+    if (x509_name_cmp(&crt->issuer, &crt->subject) != 0) {
+        return -1;
+    }
 
     /* look for an exact match with trusted cert */
-    for( cur = trust_ca; cur != NULL; cur = cur->next )
-    {
-        if( crt->raw.len == cur->raw.len &&
-            memcmp( crt->raw.p, cur->raw.p, crt->raw.len ) == 0 )
-        {
-            return( 0 );
+    for (cur = trust_ca; cur != NULL; cur = cur->next) {
+        if (crt->raw.len == cur->raw.len &&
+            memcmp(crt->raw.p, cur->raw.p, crt->raw.len) == 0) {
+            return 0;
         }
     }
 
     /* too bad */
-    return( -1 );
+    return -1;
 }
 
 /*
@@ -2815,14 +2826,14 @@
  *      even if it was found to be invalid
  */
 static int x509_crt_verify_chain(
-                mbedtls_x509_crt *crt,
-                mbedtls_x509_crt *trust_ca,
-                mbedtls_x509_crl *ca_crl,
-                mbedtls_x509_crt_ca_cb_t f_ca_cb,
-                void *p_ca_cb,
-                const mbedtls_x509_crt_profile *profile,
-                mbedtls_x509_crt_verify_chain *ver_chain,
-                mbedtls_x509_crt_restart_ctx *rs_ctx )
+    mbedtls_x509_crt *crt,
+    mbedtls_x509_crt *trust_ca,
+    mbedtls_x509_crl *ca_crl,
+    mbedtls_x509_crt_ca_cb_t f_ca_cb,
+    void *p_ca_cb,
+    const mbedtls_x509_crt_profile *profile,
+    mbedtls_x509_crt_verify_chain *ver_chain,
+    mbedtls_x509_crt_restart_ctx *rs_ctx)
 {
     /* Don't initialize any of those variables here, so that the compiler can
      * catch potential issues with jumping ahead when restarting */
@@ -2839,8 +2850,7 @@
 
 #if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
     /* resume if we had an operation in progress */
-    if( rs_ctx != NULL && rs_ctx->in_progress == x509_crt_rs_find_parent )
-    {
+    if (rs_ctx != NULL && rs_ctx->in_progress == x509_crt_rs_find_parent) {
         /* restore saved state */
         *ver_chain = rs_ctx->ver_chain; /* struct copy */
         self_cnt = rs_ctx->self_cnt;
@@ -2859,7 +2869,7 @@
     parent_is_trusted = 0;
     child_is_trusted = 0;
 
-    while( 1 ) {
+    while (1) {
         /* Add certificate to the verification chain */
         cur = &ver_chain->items[ver_chain->len];
         cur->crt = child;
@@ -2868,28 +2878,32 @@
         flags = &cur->flags;
 
         /* Check time-validity (all certificates) */
-        if( mbedtls_x509_time_is_past( &child->valid_to ) )
+        if (mbedtls_x509_time_is_past(&child->valid_to)) {
             *flags |= MBEDTLS_X509_BADCERT_EXPIRED;
+        }
 
-        if( mbedtls_x509_time_is_future( &child->valid_from ) )
+        if (mbedtls_x509_time_is_future(&child->valid_from)) {
             *flags |= MBEDTLS_X509_BADCERT_FUTURE;
+        }
 
         /* Stop here for trusted roots (but not for trusted EE certs) */
-        if( child_is_trusted )
-            return( 0 );
+        if (child_is_trusted) {
+            return 0;
+        }
 
         /* Check signature algorithm: MD & PK algs */
-        if( x509_profile_check_md_alg( profile, child->sig_md ) != 0 )
+        if (x509_profile_check_md_alg(profile, child->sig_md) != 0) {
             *flags |= MBEDTLS_X509_BADCERT_BAD_MD;
+        }
 
-        if( x509_profile_check_pk_alg( profile, child->sig_pk ) != 0 )
+        if (x509_profile_check_pk_alg(profile, child->sig_pk) != 0) {
             *flags |= MBEDTLS_X509_BADCERT_BAD_PK;
+        }
 
         /* Special case: EE certs that are locally trusted */
-        if( ver_chain->len == 1 &&
-            x509_crt_check_ee_locally_trusted( child, trust_ca ) == 0 )
-        {
-            return( 0 );
+        if (ver_chain->len == 1 &&
+            x509_crt_check_ee_locally_trusted(child, trust_ca) == 0) {
+            return 0;
         }
 
 #if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
@@ -2899,19 +2913,18 @@
         /* Obtain list of potential trusted signers from CA callback,
          * or use statically provided list. */
 #if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
-        if( f_ca_cb != NULL )
-        {
-            mbedtls_x509_crt_free( ver_chain->trust_ca_cb_result );
-            mbedtls_free( ver_chain->trust_ca_cb_result );
+        if (f_ca_cb != NULL) {
+            mbedtls_x509_crt_free(ver_chain->trust_ca_cb_result);
+            mbedtls_free(ver_chain->trust_ca_cb_result);
             ver_chain->trust_ca_cb_result = NULL;
 
-            ret = f_ca_cb( p_ca_cb, child, &ver_chain->trust_ca_cb_result );
-            if( ret != 0 )
-                return( MBEDTLS_ERR_X509_FATAL_ERROR );
+            ret = f_ca_cb(p_ca_cb, child, &ver_chain->trust_ca_cb_result);
+            if (ret != 0) {
+                return MBEDTLS_ERR_X509_FATAL_ERROR;
+            }
 
             cur_trust_ca = ver_chain->trust_ca_cb_result;
-        }
-        else
+        } else
 #endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */
         {
             ((void) f_ca_cb);
@@ -2920,60 +2933,58 @@
         }
 
         /* Look for a parent in trusted CAs or up the chain */
-        ret = x509_crt_find_parent( child, cur_trust_ca, &parent,
-                                       &parent_is_trusted, &signature_is_good,
-                                       ver_chain->len - 1, self_cnt, rs_ctx );
+        ret = x509_crt_find_parent(child, cur_trust_ca, &parent,
+                                   &parent_is_trusted, &signature_is_good,
+                                   ver_chain->len - 1, self_cnt, rs_ctx);
 
 #if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
-        if( rs_ctx != NULL && ret == MBEDTLS_ERR_ECP_IN_PROGRESS )
-        {
+        if (rs_ctx != NULL && ret == MBEDTLS_ERR_ECP_IN_PROGRESS) {
             /* save state */
             rs_ctx->in_progress = x509_crt_rs_find_parent;
             rs_ctx->self_cnt = self_cnt;
             rs_ctx->ver_chain = *ver_chain; /* struct copy */
 
-            return( ret );
+            return ret;
         }
 #else
         (void) ret;
 #endif
 
         /* No parent? We're done here */
-        if( parent == NULL )
-        {
+        if (parent == NULL) {
             *flags |= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
-            return( 0 );
+            return 0;
         }
 
         /* Count intermediate self-issued (not necessarily self-signed) certs.
          * These can occur with some strategies for key rollover, see [SIRO],
          * and should be excluded from max_pathlen checks. */
-        if( ver_chain->len != 1 &&
-            x509_name_cmp( &child->issuer, &child->subject ) == 0 )
-        {
+        if (ver_chain->len != 1 &&
+            x509_name_cmp(&child->issuer, &child->subject) == 0) {
             self_cnt++;
         }
 
         /* path_cnt is 0 for the first intermediate CA,
          * and if parent is trusted it's not an intermediate CA */
-        if( ! parent_is_trusted &&
-            ver_chain->len > MBEDTLS_X509_MAX_INTERMEDIATE_CA )
-        {
+        if (!parent_is_trusted &&
+            ver_chain->len > MBEDTLS_X509_MAX_INTERMEDIATE_CA) {
             /* return immediately to avoid overflow the chain array */
-            return( MBEDTLS_ERR_X509_FATAL_ERROR );
+            return MBEDTLS_ERR_X509_FATAL_ERROR;
         }
 
         /* signature was checked while searching parent */
-        if( ! signature_is_good )
+        if (!signature_is_good) {
             *flags |= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
+        }
 
         /* check size of signing key */
-        if( x509_profile_check_key( profile, &parent->pk ) != 0 )
+        if (x509_profile_check_key(profile, &parent->pk) != 0) {
             *flags |= MBEDTLS_X509_BADCERT_BAD_KEY;
+        }
 
 #if defined(MBEDTLS_X509_CRL_PARSE_C)
         /* Check trusted CA's CRL for the given crt */
-        *flags |= x509_crt_verifycrl( child, parent, ca_crl, profile );
+        *flags |= x509_crt_verifycrl(child, parent, ca_crl, profile);
 #else
         (void) ca_crl;
 #endif
@@ -2989,79 +3000,75 @@
 /*
  * Check for CN match
  */
-static int x509_crt_check_cn( const mbedtls_x509_buf *name,
-                              const char *cn, size_t cn_len )
+static int x509_crt_check_cn(const mbedtls_x509_buf *name,
+                             const char *cn, size_t cn_len)
 {
     /* try exact match */
-    if( name->len == cn_len &&
-        x509_memcasecmp( cn, name->p, cn_len ) == 0 )
-    {
-        return( 0 );
+    if (name->len == cn_len &&
+        x509_memcasecmp(cn, name->p, cn_len) == 0) {
+        return 0;
     }
 
     /* try wildcard match */
-    if( x509_check_wildcard( cn, name ) == 0 )
-    {
-        return( 0 );
+    if (x509_check_wildcard(cn, name) == 0) {
+        return 0;
     }
 
-    return( -1 );
+    return -1;
 }
 
 /*
  * Check for SAN match, see RFC 5280 Section 4.2.1.6
  */
-static int x509_crt_check_san( const mbedtls_x509_buf *name,
-                               const char *cn, size_t cn_len )
+static int x509_crt_check_san(const mbedtls_x509_buf *name,
+                              const char *cn, size_t cn_len)
 {
     const unsigned char san_type = (unsigned char) name->tag &
                                    MBEDTLS_ASN1_TAG_VALUE_MASK;
 
     /* dNSName */
-    if( san_type == MBEDTLS_X509_SAN_DNS_NAME )
-        return( x509_crt_check_cn( name, cn, cn_len ) );
+    if (san_type == MBEDTLS_X509_SAN_DNS_NAME) {
+        return x509_crt_check_cn(name, cn, cn_len);
+    }
 
     /* (We may handle other types here later.) */
 
     /* Unrecognized type */
-    return( -1 );
+    return -1;
 }
 
 /*
  * Verify the requested CN - only call this if cn is not NULL!
  */
-static void x509_crt_verify_name( const mbedtls_x509_crt *crt,
-                                  const char *cn,
-                                  uint32_t *flags )
+static void x509_crt_verify_name(const mbedtls_x509_crt *crt,
+                                 const char *cn,
+                                 uint32_t *flags)
 {
     const mbedtls_x509_name *name;
     const mbedtls_x509_sequence *cur;
-    size_t cn_len = strlen( cn );
+    size_t cn_len = strlen(cn);
 
-    if( crt->ext_types & MBEDTLS_X509_EXT_SUBJECT_ALT_NAME )
-    {
-        for( cur = &crt->subject_alt_names; cur != NULL; cur = cur->next )
-        {
-            if( x509_crt_check_san( &cur->buf, cn, cn_len ) == 0 )
-                break;
-        }
-
-        if( cur == NULL )
-            *flags |= MBEDTLS_X509_BADCERT_CN_MISMATCH;
-    }
-    else
-    {
-        for( name = &crt->subject; name != NULL; name = name->next )
-        {
-            if( MBEDTLS_OID_CMP( MBEDTLS_OID_AT_CN, &name->oid ) == 0 &&
-                x509_crt_check_cn( &name->val, cn, cn_len ) == 0 )
-            {
+    if (crt->ext_types & MBEDTLS_X509_EXT_SUBJECT_ALT_NAME) {
+        for (cur = &crt->subject_alt_names; cur != NULL; cur = cur->next) {
+            if (x509_crt_check_san(&cur->buf, cn, cn_len) == 0) {
                 break;
             }
         }
 
-        if( name == NULL )
+        if (cur == NULL) {
             *flags |= MBEDTLS_X509_BADCERT_CN_MISMATCH;
+        }
+    } else {
+        for (name = &crt->subject; name != NULL; name = name->next) {
+            if (MBEDTLS_OID_CMP(MBEDTLS_OID_AT_CN, &name->oid) == 0 &&
+                x509_crt_check_cn(&name->val, cn, cn_len) == 0) {
+                break;
+            }
+        }
+
+        if (name == NULL) {
+            *flags |= MBEDTLS_X509_BADCERT_CN_MISMATCH;
+        }
     }
 }
 
@@ -3069,29 +3076,30 @@
  * Merge the flags for all certs in the chain, after calling callback
  */
 static int x509_crt_merge_flags_with_cb(
-           uint32_t *flags,
-           const mbedtls_x509_crt_verify_chain *ver_chain,
-           int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
-           void *p_vrfy )
+    uint32_t *flags,
+    const mbedtls_x509_crt_verify_chain *ver_chain,
+    int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
+    void *p_vrfy)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned i;
     uint32_t cur_flags;
     const mbedtls_x509_crt_verify_chain_item *cur;
 
-    for( i = ver_chain->len; i != 0; --i )
-    {
+    for (i = ver_chain->len; i != 0; --i) {
         cur = &ver_chain->items[i-1];
         cur_flags = cur->flags;
 
-        if( NULL != f_vrfy )
-            if( ( ret = f_vrfy( p_vrfy, cur->crt, (int) i-1, &cur_flags ) ) != 0 )
-                return( ret );
+        if (NULL != f_vrfy) {
+            if ((ret = f_vrfy(p_vrfy, cur->crt, (int) i-1, &cur_flags)) != 0) {
+                return ret;
+            }
+        }
 
         *flags |= cur_flags;
     }
 
-    return( 0 );
+    return 0;
 }
 
 /*
@@ -3111,16 +3119,19 @@
  * of trusted signers, and `ca_crl` will be use as the static list
  * of CRLs.
  */
-static int x509_crt_verify_restartable_ca_cb( mbedtls_x509_crt *crt,
-                     mbedtls_x509_crt *trust_ca,
-                     mbedtls_x509_crl *ca_crl,
-                     mbedtls_x509_crt_ca_cb_t f_ca_cb,
-                     void *p_ca_cb,
-                     const mbedtls_x509_crt_profile *profile,
-                     const char *cn, uint32_t *flags,
-                     int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
-                     void *p_vrfy,
-                     mbedtls_x509_crt_restart_ctx *rs_ctx )
+static int x509_crt_verify_restartable_ca_cb(mbedtls_x509_crt *crt,
+                                             mbedtls_x509_crt *trust_ca,
+                                             mbedtls_x509_crl *ca_crl,
+                                             mbedtls_x509_crt_ca_cb_t f_ca_cb,
+                                             void *p_ca_cb,
+                                             const mbedtls_x509_crt_profile *profile,
+                                             const char *cn, uint32_t *flags,
+                                             int (*f_vrfy)(void *,
+                                                           mbedtls_x509_crt *,
+                                                           int,
+                                                           uint32_t *),
+                                             void *p_vrfy,
+                                             mbedtls_x509_crt_restart_ctx *rs_ctx)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     mbedtls_pk_type_t pk_type;
@@ -3129,105 +3140,110 @@
 
     *flags = 0;
     ee_flags = 0;
-    x509_crt_verify_chain_reset( &ver_chain );
+    x509_crt_verify_chain_reset(&ver_chain);
 
-    if( profile == NULL )
-    {
+    if (profile == NULL) {
         ret = MBEDTLS_ERR_X509_BAD_INPUT_DATA;
         goto exit;
     }
 
     /* check name if requested */
-    if( cn != NULL )
-        x509_crt_verify_name( crt, cn, &ee_flags );
+    if (cn != NULL) {
+        x509_crt_verify_name(crt, cn, &ee_flags);
+    }
 
     /* Check the type and size of the key */
-    pk_type = mbedtls_pk_get_type( &crt->pk );
+    pk_type = mbedtls_pk_get_type(&crt->pk);
 
-    if( x509_profile_check_pk_alg( profile, pk_type ) != 0 )
+    if (x509_profile_check_pk_alg(profile, pk_type) != 0) {
         ee_flags |= MBEDTLS_X509_BADCERT_BAD_PK;
+    }
 
-    if( x509_profile_check_key( profile, &crt->pk ) != 0 )
+    if (x509_profile_check_key(profile, &crt->pk) != 0) {
         ee_flags |= MBEDTLS_X509_BADCERT_BAD_KEY;
+    }
 
     /* Check the chain */
-    ret = x509_crt_verify_chain( crt, trust_ca, ca_crl,
-                                 f_ca_cb, p_ca_cb, profile,
-                                 &ver_chain, rs_ctx );
+    ret = x509_crt_verify_chain(crt, trust_ca, ca_crl,
+                                f_ca_cb, p_ca_cb, profile,
+                                &ver_chain, rs_ctx);
 
-    if( ret != 0 )
+    if (ret != 0) {
         goto exit;
+    }
 
     /* Merge end-entity flags */
     ver_chain.items[0].flags |= ee_flags;
 
     /* Build final flags, calling callback on the way if any */
-    ret = x509_crt_merge_flags_with_cb( flags, &ver_chain, f_vrfy, p_vrfy );
+    ret = x509_crt_merge_flags_with_cb(flags, &ver_chain, f_vrfy, p_vrfy);
 
 exit:
 
 #if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
-    mbedtls_x509_crt_free( ver_chain.trust_ca_cb_result );
-    mbedtls_free( ver_chain.trust_ca_cb_result );
+    mbedtls_x509_crt_free(ver_chain.trust_ca_cb_result);
+    mbedtls_free(ver_chain.trust_ca_cb_result);
     ver_chain.trust_ca_cb_result = NULL;
 #endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */
 
 #if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
-    if( rs_ctx != NULL && ret != MBEDTLS_ERR_ECP_IN_PROGRESS )
-        mbedtls_x509_crt_restart_free( rs_ctx );
+    if (rs_ctx != NULL && ret != MBEDTLS_ERR_ECP_IN_PROGRESS) {
+        mbedtls_x509_crt_restart_free(rs_ctx);
+    }
 #endif
 
     /* prevent misuse of the vrfy callback - VERIFY_FAILED would be ignored by
      * the SSL module for authmode optional, but non-zero return from the
      * callback means a fatal error so it shouldn't be ignored */
-    if( ret == MBEDTLS_ERR_X509_CERT_VERIFY_FAILED )
+    if (ret == MBEDTLS_ERR_X509_CERT_VERIFY_FAILED) {
         ret = MBEDTLS_ERR_X509_FATAL_ERROR;
-
-    if( ret != 0 )
-    {
-        *flags = (uint32_t) -1;
-        return( ret );
     }
 
-    if( *flags != 0 )
-        return( MBEDTLS_ERR_X509_CERT_VERIFY_FAILED );
+    if (ret != 0) {
+        *flags = (uint32_t) -1;
+        return ret;
+    }
 
-    return( 0 );
+    if (*flags != 0) {
+        return MBEDTLS_ERR_X509_CERT_VERIFY_FAILED;
+    }
+
+    return 0;
 }
 
 
 /*
  * Verify the certificate validity (default profile, not restartable)
  */
-int mbedtls_x509_crt_verify( mbedtls_x509_crt *crt,
-                     mbedtls_x509_crt *trust_ca,
-                     mbedtls_x509_crl *ca_crl,
-                     const char *cn, uint32_t *flags,
-                     int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
-                     void *p_vrfy )
+int mbedtls_x509_crt_verify(mbedtls_x509_crt *crt,
+                            mbedtls_x509_crt *trust_ca,
+                            mbedtls_x509_crl *ca_crl,
+                            const char *cn, uint32_t *flags,
+                            int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
+                            void *p_vrfy)
 {
-    return( x509_crt_verify_restartable_ca_cb( crt, trust_ca, ca_crl,
-                                         NULL, NULL,
-                                         &mbedtls_x509_crt_profile_default,
-                                         cn, flags,
-                                         f_vrfy, p_vrfy, NULL ) );
+    return x509_crt_verify_restartable_ca_cb(crt, trust_ca, ca_crl,
+                                             NULL, NULL,
+                                             &mbedtls_x509_crt_profile_default,
+                                             cn, flags,
+                                             f_vrfy, p_vrfy, NULL);
 }
 
 /*
  * Verify the certificate validity (user-chosen profile, not restartable)
  */
-int mbedtls_x509_crt_verify_with_profile( mbedtls_x509_crt *crt,
-                     mbedtls_x509_crt *trust_ca,
-                     mbedtls_x509_crl *ca_crl,
-                     const mbedtls_x509_crt_profile *profile,
-                     const char *cn, uint32_t *flags,
-                     int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
-                     void *p_vrfy )
+int mbedtls_x509_crt_verify_with_profile(mbedtls_x509_crt *crt,
+                                         mbedtls_x509_crt *trust_ca,
+                                         mbedtls_x509_crl *ca_crl,
+                                         const mbedtls_x509_crt_profile *profile,
+                                         const char *cn, uint32_t *flags,
+                                         int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
+                                         void *p_vrfy)
 {
-    return( x509_crt_verify_restartable_ca_cb( crt, trust_ca, ca_crl,
-                                                 NULL, NULL,
-                                                 profile, cn, flags,
-                                                 f_vrfy, p_vrfy, NULL ) );
+    return x509_crt_verify_restartable_ca_cb(crt, trust_ca, ca_crl,
+                                             NULL, NULL,
+                                             profile, cn, flags,
+                                             f_vrfy, p_vrfy, NULL);
 }
 
 #if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
@@ -3235,49 +3251,49 @@
  * Verify the certificate validity (user-chosen profile, CA callback,
  *                                  not restartable).
  */
-int mbedtls_x509_crt_verify_with_ca_cb( mbedtls_x509_crt *crt,
-                     mbedtls_x509_crt_ca_cb_t f_ca_cb,
-                     void *p_ca_cb,
-                     const mbedtls_x509_crt_profile *profile,
-                     const char *cn, uint32_t *flags,
-                     int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
-                     void *p_vrfy )
+int mbedtls_x509_crt_verify_with_ca_cb(mbedtls_x509_crt *crt,
+                                       mbedtls_x509_crt_ca_cb_t f_ca_cb,
+                                       void *p_ca_cb,
+                                       const mbedtls_x509_crt_profile *profile,
+                                       const char *cn, uint32_t *flags,
+                                       int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
+                                       void *p_vrfy)
 {
-    return( x509_crt_verify_restartable_ca_cb( crt, NULL, NULL,
-                                                 f_ca_cb, p_ca_cb,
-                                                 profile, cn, flags,
-                                                 f_vrfy, p_vrfy, NULL ) );
+    return x509_crt_verify_restartable_ca_cb(crt, NULL, NULL,
+                                             f_ca_cb, p_ca_cb,
+                                             profile, cn, flags,
+                                             f_vrfy, p_vrfy, NULL);
 }
 #endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */
 
-int mbedtls_x509_crt_verify_restartable( mbedtls_x509_crt *crt,
-                     mbedtls_x509_crt *trust_ca,
-                     mbedtls_x509_crl *ca_crl,
-                     const mbedtls_x509_crt_profile *profile,
-                     const char *cn, uint32_t *flags,
-                     int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
-                     void *p_vrfy,
-                     mbedtls_x509_crt_restart_ctx *rs_ctx )
+int mbedtls_x509_crt_verify_restartable(mbedtls_x509_crt *crt,
+                                        mbedtls_x509_crt *trust_ca,
+                                        mbedtls_x509_crl *ca_crl,
+                                        const mbedtls_x509_crt_profile *profile,
+                                        const char *cn, uint32_t *flags,
+                                        int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
+                                        void *p_vrfy,
+                                        mbedtls_x509_crt_restart_ctx *rs_ctx)
 {
-    return( x509_crt_verify_restartable_ca_cb( crt, trust_ca, ca_crl,
-                                                 NULL, NULL,
-                                                 profile, cn, flags,
-                                                 f_vrfy, p_vrfy, rs_ctx ) );
+    return x509_crt_verify_restartable_ca_cb(crt, trust_ca, ca_crl,
+                                             NULL, NULL,
+                                             profile, cn, flags,
+                                             f_vrfy, p_vrfy, rs_ctx);
 }
 
 
 /*
  * Initialize a certificate chain
  */
-void mbedtls_x509_crt_init( mbedtls_x509_crt *crt )
+void mbedtls_x509_crt_init(mbedtls_x509_crt *crt)
 {
-    memset( crt, 0, sizeof(mbedtls_x509_crt) );
+    memset(crt, 0, sizeof(mbedtls_x509_crt));
 }
 
 /*
  * Unallocate all certificate data
  */
-void mbedtls_x509_crt_free( mbedtls_x509_crt *crt )
+void mbedtls_x509_crt_free(mbedtls_x509_crt *crt)
 {
     mbedtls_x509_crt *cert_cur = crt;
     mbedtls_x509_crt *cert_prv;
@@ -3286,95 +3302,87 @@
     mbedtls_x509_sequence *seq_cur;
     mbedtls_x509_sequence *seq_prv;
 
-    if( crt == NULL )
+    if (crt == NULL) {
         return;
+    }
 
-    do
-    {
-        mbedtls_pk_free( &cert_cur->pk );
+    do {
+        mbedtls_pk_free(&cert_cur->pk);
 
 #if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT)
-        mbedtls_free( cert_cur->sig_opts );
+        mbedtls_free(cert_cur->sig_opts);
 #endif
 
         name_cur = cert_cur->issuer.next;
-        while( name_cur != NULL )
-        {
+        while (name_cur != NULL) {
             name_prv = name_cur;
             name_cur = name_cur->next;
-            mbedtls_platform_zeroize( name_prv, sizeof( mbedtls_x509_name ) );
-            mbedtls_free( name_prv );
+            mbedtls_platform_zeroize(name_prv, sizeof(mbedtls_x509_name));
+            mbedtls_free(name_prv);
         }
 
         name_cur = cert_cur->subject.next;
-        while( name_cur != NULL )
-        {
+        while (name_cur != NULL) {
             name_prv = name_cur;
             name_cur = name_cur->next;
-            mbedtls_platform_zeroize( name_prv, sizeof( mbedtls_x509_name ) );
-            mbedtls_free( name_prv );
+            mbedtls_platform_zeroize(name_prv, sizeof(mbedtls_x509_name));
+            mbedtls_free(name_prv);
         }
 
         seq_cur = cert_cur->ext_key_usage.next;
-        while( seq_cur != NULL )
-        {
+        while (seq_cur != NULL) {
             seq_prv = seq_cur;
             seq_cur = seq_cur->next;
-            mbedtls_platform_zeroize( seq_prv,
-                                      sizeof( mbedtls_x509_sequence ) );
-            mbedtls_free( seq_prv );
+            mbedtls_platform_zeroize(seq_prv,
+                                     sizeof(mbedtls_x509_sequence));
+            mbedtls_free(seq_prv);
         }
 
         seq_cur = cert_cur->subject_alt_names.next;
-        while( seq_cur != NULL )
-        {
+        while (seq_cur != NULL) {
             seq_prv = seq_cur;
             seq_cur = seq_cur->next;
-            mbedtls_platform_zeroize( seq_prv,
-                                      sizeof( mbedtls_x509_sequence ) );
-            mbedtls_free( seq_prv );
+            mbedtls_platform_zeroize(seq_prv,
+                                     sizeof(mbedtls_x509_sequence));
+            mbedtls_free(seq_prv);
         }
 
         seq_cur = cert_cur->certificate_policies.next;
-        while( seq_cur != NULL )
-        {
+        while (seq_cur != NULL) {
             seq_prv = seq_cur;
             seq_cur = seq_cur->next;
-            mbedtls_platform_zeroize( seq_prv,
-                                      sizeof( mbedtls_x509_sequence ) );
-            mbedtls_free( seq_prv );
+            mbedtls_platform_zeroize(seq_prv,
+                                     sizeof(mbedtls_x509_sequence));
+            mbedtls_free(seq_prv);
         }
 
-        if( cert_cur->raw.p != NULL && cert_cur->own_buffer )
-        {
-            mbedtls_platform_zeroize( cert_cur->raw.p, cert_cur->raw.len );
-            mbedtls_free( cert_cur->raw.p );
+        if (cert_cur->raw.p != NULL && cert_cur->own_buffer) {
+            mbedtls_platform_zeroize(cert_cur->raw.p, cert_cur->raw.len);
+            mbedtls_free(cert_cur->raw.p);
         }
 
         cert_cur = cert_cur->next;
-    }
-    while( cert_cur != NULL );
+    } while (cert_cur != NULL);
 
     cert_cur = crt;
-    do
-    {
+    do {
         cert_prv = cert_cur;
         cert_cur = cert_cur->next;
 
-        mbedtls_platform_zeroize( cert_prv, sizeof( mbedtls_x509_crt ) );
-        if( cert_prv != crt )
-            mbedtls_free( cert_prv );
-    }
-    while( cert_cur != NULL );
+        mbedtls_platform_zeroize(cert_prv, sizeof(mbedtls_x509_crt));
+        if (cert_prv != crt) {
+            mbedtls_free(cert_prv);
+        }
+    } while (cert_cur != NULL);
 }
 
 #if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
 /*
  * Initialize a restart context
  */
-void mbedtls_x509_crt_restart_init( mbedtls_x509_crt_restart_ctx *ctx )
+void mbedtls_x509_crt_restart_init(mbedtls_x509_crt_restart_ctx *ctx)
 {
-    mbedtls_pk_restart_init( &ctx->pk );
+    mbedtls_pk_restart_init(&ctx->pk);
 
     ctx->parent = NULL;
     ctx->fallback_parent = NULL;
@@ -3384,19 +3392,20 @@
 
     ctx->in_progress = x509_crt_rs_none;
     ctx->self_cnt = 0;
-    x509_crt_verify_chain_reset( &ctx->ver_chain );
+    x509_crt_verify_chain_reset(&ctx->ver_chain);
 }
 
 /*
  * Free the components of a restart context
  */
-void mbedtls_x509_crt_restart_free( mbedtls_x509_crt_restart_ctx *ctx )
+void mbedtls_x509_crt_restart_free(mbedtls_x509_crt_restart_ctx *ctx)
 {
-    if( ctx == NULL )
+    if (ctx == NULL) {
         return;
+    }
 
-    mbedtls_pk_restart_free( &ctx->pk );
-    mbedtls_x509_crt_restart_init( ctx );
+    mbedtls_pk_restart_free(&ctx->pk);
+    mbedtls_x509_crt_restart_init(ctx);
 }
 #endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */