diff --git a/library/x509_csr.c b/library/x509_csr.c
index 1a22b77..89344d1 100644
--- a/library/x509_csr.c
+++ b/library/x509_csr.c
@@ -51,56 +51,56 @@
 /*
  *  Version  ::=  INTEGER  {  v1(0)  }
  */
-static int x509_csr_get_version( unsigned char **p,
-                             const unsigned char *end,
-                             int *ver )
+static int x509_csr_get_version(unsigned char **p,
+                                const unsigned char *end,
+                                int *ver)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
-    if( ( ret = mbedtls_asn1_get_int( p, end, ver ) ) != 0 )
-    {
-        if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
-        {
+    if ((ret = mbedtls_asn1_get_int(p, end, ver)) != 0) {
+        if (ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG) {
             *ver = 0;
-            return( 0 );
+            return 0;
         }
 
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_VERSION, ret ) );
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_VERSION, ret);
     }
 
-    return( 0 );
+    return 0;
 }
 
 /*
  * Parse a CSR in DER format
  */
-int mbedtls_x509_csr_parse_der( mbedtls_x509_csr *csr,
-                        const unsigned char *buf, size_t buflen )
+int mbedtls_x509_csr_parse_der(mbedtls_x509_csr *csr,
+                               const unsigned char *buf, size_t buflen)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t len;
     unsigned char *p, *end;
     mbedtls_x509_buf sig_params;
 
-    memset( &sig_params, 0, sizeof( mbedtls_x509_buf ) );
+    memset(&sig_params, 0, sizeof(mbedtls_x509_buf));
 
     /*
      * Check for valid input
      */
-    if( csr == NULL || buf == NULL || buflen == 0 )
-        return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
+    if (csr == NULL || buf == NULL || buflen == 0) {
+        return MBEDTLS_ERR_X509_BAD_INPUT_DATA;
+    }
 
-    mbedtls_x509_csr_init( csr );
+    mbedtls_x509_csr_init(csr);
 
     /*
      * first copy the raw DER data
      */
-    p = mbedtls_calloc( 1, len = buflen );
+    p = mbedtls_calloc(1, len = buflen);
 
-    if( p == NULL )
-        return( MBEDTLS_ERR_X509_ALLOC_FAILED );
+    if (p == NULL) {
+        return MBEDTLS_ERR_X509_ALLOC_FAILED;
+    }
 
-    memcpy( p, buf, buflen );
+    memcpy(p, buf, buflen);
 
     csr->raw.p = p;
     csr->raw.len = len;
@@ -113,18 +113,16 @@
      *       signature          BIT STRING
      *  }
      */
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-    {
-        mbedtls_x509_csr_free( csr );
-        return( MBEDTLS_ERR_X509_INVALID_FORMAT );
+    if ((ret = mbedtls_asn1_get_tag(&p, end, &len,
+                                    MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) != 0) {
+        mbedtls_x509_csr_free(csr);
+        return MBEDTLS_ERR_X509_INVALID_FORMAT;
     }
 
-    if( len != (size_t) ( end - p ) )
-    {
-        mbedtls_x509_csr_free( csr );
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_FORMAT,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+    if (len != (size_t) (end - p)) {
+        mbedtls_x509_csr_free(csr);
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_FORMAT,
+                                 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
     }
 
     /*
@@ -132,11 +130,10 @@
      */
     csr->cri.p = p;
 
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-    {
-        mbedtls_x509_csr_free( csr );
-        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_csr_free(csr);
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_FORMAT, ret);
     }
 
     end = p + len;
@@ -145,16 +142,14 @@
     /*
      *  Version  ::=  INTEGER {  v1(0) }
      */
-    if( ( ret = x509_csr_get_version( &p, end, &csr->version ) ) != 0 )
-    {
-        mbedtls_x509_csr_free( csr );
-        return( ret );
+    if ((ret = x509_csr_get_version(&p, end, &csr->version)) != 0) {
+        mbedtls_x509_csr_free(csr);
+        return ret;
     }
 
-    if( csr->version != 0 )
-    {
-        mbedtls_x509_csr_free( csr );
-        return( MBEDTLS_ERR_X509_UNKNOWN_VERSION );
+    if (csr->version != 0) {
+        mbedtls_x509_csr_free(csr);
+        return MBEDTLS_ERR_X509_UNKNOWN_VERSION;
     }
 
     csr->version++;
@@ -164,17 +159,15 @@
      */
     csr->subject_raw.p = p;
 
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
-    {
-        mbedtls_x509_csr_free( csr );
-        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_csr_free(csr);
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_FORMAT, ret);
     }
 
-    if( ( ret = mbedtls_x509_get_name( &p, p + len, &csr->subject ) ) != 0 )
-    {
-        mbedtls_x509_csr_free( csr );
-        return( ret );
+    if ((ret = mbedtls_x509_get_name(&p, p + len, &csr->subject)) != 0) {
+        mbedtls_x509_csr_free(csr);
+        return ret;
     }
 
     csr->subject_raw.len = p - csr->subject_raw.p;
@@ -182,10 +175,9 @@
     /*
      *  subjectPKInfo SubjectPublicKeyInfo
      */
-    if( ( ret = mbedtls_pk_parse_subpubkey( &p, end, &csr->pk ) ) != 0 )
-    {
-        mbedtls_x509_csr_free( csr );
-        return( ret );
+    if ((ret = mbedtls_pk_parse_subpubkey(&p, end, &csr->pk)) != 0) {
+        mbedtls_x509_csr_free(csr);
+        return ret;
     }
 
     /*
@@ -198,11 +190,11 @@
      *  the requester's expectations - this cannot cause a violation of our
      *  signature policies.
      */
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
-            MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_CONTEXT_SPECIFIC ) ) != 0 )
-    {
-        mbedtls_x509_csr_free( csr );
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_FORMAT, ret ) );
+    if ((ret = mbedtls_asn1_get_tag(&p, end, &len,
+                                    MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_CONTEXT_SPECIFIC)) !=
+        0) {
+        mbedtls_x509_csr_free(csr);
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_FORMAT, ret);
     }
 
     p += len;
@@ -213,40 +205,36 @@
      *  signatureAlgorithm   AlgorithmIdentifier,
      *  signature            BIT STRING
      */
-    if( ( ret = mbedtls_x509_get_alg( &p, end, &csr->sig_oid, &sig_params ) ) != 0 )
-    {
-        mbedtls_x509_csr_free( csr );
-        return( ret );
+    if ((ret = mbedtls_x509_get_alg(&p, end, &csr->sig_oid, &sig_params)) != 0) {
+        mbedtls_x509_csr_free(csr);
+        return ret;
     }
 
-    if( ( ret = mbedtls_x509_get_sig_alg( &csr->sig_oid, &sig_params,
-                                  &csr->sig_md, &csr->sig_pk,
-                                  &csr->sig_opts ) ) != 0 )
-    {
-        mbedtls_x509_csr_free( csr );
-        return( MBEDTLS_ERR_X509_UNKNOWN_SIG_ALG );
+    if ((ret = mbedtls_x509_get_sig_alg(&csr->sig_oid, &sig_params,
+                                        &csr->sig_md, &csr->sig_pk,
+                                        &csr->sig_opts)) != 0) {
+        mbedtls_x509_csr_free(csr);
+        return MBEDTLS_ERR_X509_UNKNOWN_SIG_ALG;
     }
 
-    if( ( ret = mbedtls_x509_get_sig( &p, end, &csr->sig ) ) != 0 )
-    {
-        mbedtls_x509_csr_free( csr );
-        return( ret );
+    if ((ret = mbedtls_x509_get_sig(&p, end, &csr->sig)) != 0) {
+        mbedtls_x509_csr_free(csr);
+        return ret;
     }
 
-    if( p != end )
-    {
-        mbedtls_x509_csr_free( csr );
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_X509_INVALID_FORMAT,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+    if (p != end) {
+        mbedtls_x509_csr_free(csr);
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_FORMAT,
+                                 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
     }
 
-    return( 0 );
+    return 0;
 }
 
 /*
  * Parse a CSR, allowing for PEM or raw DER encoding
  */
-int mbedtls_x509_csr_parse( mbedtls_x509_csr *csr, const unsigned char *buf, size_t buflen )
+int mbedtls_x509_csr_parse(mbedtls_x509_csr *csr, const unsigned char *buf, size_t buflen)
 {
 #if defined(MBEDTLS_PEM_PARSE_C)
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
@@ -257,61 +245,61 @@
     /*
      * Check for valid input
      */
-    if( csr == NULL || buf == NULL || buflen == 0 )
-        return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
+    if (csr == NULL || buf == NULL || buflen == 0) {
+        return MBEDTLS_ERR_X509_BAD_INPUT_DATA;
+    }
 
 #if defined(MBEDTLS_PEM_PARSE_C)
     /* Avoid calling mbedtls_pem_read_buffer() on non-null-terminated string */
-    if( buf[buflen - 1] == '\0' )
-    {
-        mbedtls_pem_init( &pem );
-        ret = mbedtls_pem_read_buffer( &pem,
-                                       "-----BEGIN CERTIFICATE REQUEST-----",
-                                       "-----END CERTIFICATE REQUEST-----",
-                                       buf, NULL, 0, &use_len );
-        if( ret == MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
-        {
-            ret = mbedtls_pem_read_buffer( &pem,
-                                           "-----BEGIN NEW CERTIFICATE REQUEST-----",
-                                           "-----END NEW CERTIFICATE REQUEST-----",
-                                           buf, NULL, 0, &use_len );
+    if (buf[buflen - 1] == '\0') {
+        mbedtls_pem_init(&pem);
+        ret = mbedtls_pem_read_buffer(&pem,
+                                      "-----BEGIN CERTIFICATE REQUEST-----",
+                                      "-----END CERTIFICATE REQUEST-----",
+                                      buf, NULL, 0, &use_len);
+        if (ret == MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT) {
+            ret = mbedtls_pem_read_buffer(&pem,
+                                          "-----BEGIN NEW CERTIFICATE REQUEST-----",
+                                          "-----END NEW CERTIFICATE REQUEST-----",
+                                          buf, NULL, 0, &use_len);
         }
 
-        if( ret == 0 )
-        {
+        if (ret == 0) {
             /*
              * Was PEM encoded, parse the result
              */
-            ret = mbedtls_x509_csr_parse_der( csr, pem.buf, pem.buflen );
+            ret = mbedtls_x509_csr_parse_der(csr, pem.buf, pem.buflen);
         }
 
-        mbedtls_pem_free( &pem );
-        if( ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
-            return( ret );
+        mbedtls_pem_free(&pem);
+        if (ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT) {
+            return ret;
+        }
     }
 #endif /* MBEDTLS_PEM_PARSE_C */
-    return( mbedtls_x509_csr_parse_der( csr, buf, buflen ) );
+    return mbedtls_x509_csr_parse_der(csr, buf, buflen);
 }
 
 #if defined(MBEDTLS_FS_IO)
 /*
  * Load a CSR into the structure
  */
-int mbedtls_x509_csr_parse_file( mbedtls_x509_csr *csr, const char *path )
+int mbedtls_x509_csr_parse_file(mbedtls_x509_csr *csr, 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_csr_parse( csr, buf, n );
+    ret = mbedtls_x509_csr_parse(csr, buf, n);
 
-    mbedtls_platform_zeroize( buf, n );
-    mbedtls_free( buf );
+    mbedtls_platform_zeroize(buf, n);
+    mbedtls_free(buf);
 
-    return( ret );
+    return ret;
 }
 #endif /* MBEDTLS_FS_IO */
 
@@ -320,8 +308,8 @@
 /*
  * Return an informational string about the CSR.
  */
-int mbedtls_x509_csr_info( char *buf, size_t size, const char *prefix,
-                   const mbedtls_x509_csr *csr )
+int mbedtls_x509_csr_info(char *buf, size_t size, const char *prefix,
+                          const mbedtls_x509_csr *csr)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t n;
@@ -331,76 +319,74 @@
     p = buf;
     n = size;
 
-    ret = mbedtls_snprintf( p, n, "%sCSR version   : %d",
-                               prefix, csr->version );
+    ret = mbedtls_snprintf(p, n, "%sCSR version   : %d",
+                           prefix, csr->version);
     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, &csr->subject );
+    ret = mbedtls_x509_dn_gets(p, n, &csr->subject);
     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, &csr->sig_oid, csr->sig_pk, csr->sig_md,
-                             csr->sig_opts );
+    ret = mbedtls_x509_sig_alg_gets(p, n, &csr->sig_oid, csr->sig_pk, csr->sig_md,
+                                    csr->sig_opts);
     MBEDTLS_X509_SAFE_SNPRINTF;
 
-    if( ( ret = mbedtls_x509_key_size_helper( key_size_str, BEFORE_COLON,
-                                      mbedtls_pk_get_name( &csr->pk ) ) ) != 0 )
-    {
-        return( ret );
+    if ((ret = mbedtls_x509_key_size_helper(key_size_str, BEFORE_COLON,
+                                            mbedtls_pk_get_name(&csr->pk))) != 0) {
+        return ret;
     }
 
-    ret = mbedtls_snprintf( p, n, "\n%s%-" BC "s: %d bits\n", prefix, key_size_str,
-                          (int) mbedtls_pk_get_bitlen( &csr->pk ) );
+    ret = mbedtls_snprintf(p, n, "\n%s%-" BC "s: %d bits\n", prefix, key_size_str,
+                           (int) mbedtls_pk_get_bitlen(&csr->pk));
     MBEDTLS_X509_SAFE_SNPRINTF;
 
-    return( (int) ( size - n ) );
+    return (int) (size - n);
 }
 
 /*
  * Initialize a CSR
  */
-void mbedtls_x509_csr_init( mbedtls_x509_csr *csr )
+void mbedtls_x509_csr_init(mbedtls_x509_csr *csr)
 {
-    memset( csr, 0, sizeof(mbedtls_x509_csr) );
+    memset(csr, 0, sizeof(mbedtls_x509_csr));
 }
 
 /*
  * Unallocate all CSR data
  */
-void mbedtls_x509_csr_free( mbedtls_x509_csr *csr )
+void mbedtls_x509_csr_free(mbedtls_x509_csr *csr)
 {
     mbedtls_x509_name *name_cur;
     mbedtls_x509_name *name_prv;
 
-    if( csr == NULL )
+    if (csr == NULL) {
         return;
+    }
 
-    mbedtls_pk_free( &csr->pk );
+    mbedtls_pk_free(&csr->pk);
 
 #if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT)
-    mbedtls_free( csr->sig_opts );
+    mbedtls_free(csr->sig_opts);
 #endif
 
     name_cur = csr->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);
     }
 
-    if( csr->raw.p != NULL )
-    {
-        mbedtls_platform_zeroize( csr->raw.p, csr->raw.len );
-        mbedtls_free( csr->raw.p );
+    if (csr->raw.p != NULL) {
+        mbedtls_platform_zeroize(csr->raw.p, csr->raw.len);
+        mbedtls_free(csr->raw.p);
     }
 
-    mbedtls_platform_zeroize( csr, sizeof( mbedtls_x509_csr ) );
+    mbedtls_platform_zeroize(csr, sizeof(mbedtls_x509_csr));
 }
 
 #endif /* MBEDTLS_X509_CSR_PARSE_C */