diff --git a/library/pkwrite.c b/library/pkwrite.c
index f699a27..2194c97 100644
--- a/library/pkwrite.c
+++ b/library/pkwrite.c
@@ -60,38 +60,41 @@
  *      publicExponent    INTEGER   -- e
  *  }
  */
-static int pk_write_rsa_pubkey( unsigned char **p, unsigned char *start,
-                                mbedtls_rsa_context *rsa )
+static int pk_write_rsa_pubkey(unsigned char **p, unsigned char *start,
+                               mbedtls_rsa_context *rsa)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t len = 0;
     mbedtls_mpi T;
 
-    mbedtls_mpi_init( &T );
+    mbedtls_mpi_init(&T);
 
     /* Export E */
-    if ( ( ret = mbedtls_rsa_export( rsa, NULL, NULL, NULL, NULL, &T ) ) != 0 ||
-         ( ret = mbedtls_asn1_write_mpi( p, start, &T ) ) < 0 )
+    if ((ret = mbedtls_rsa_export(rsa, NULL, NULL, NULL, NULL, &T)) != 0 ||
+        (ret = mbedtls_asn1_write_mpi(p, start, &T)) < 0) {
         goto end_of_export;
+    }
     len += ret;
 
     /* Export N */
-    if ( ( ret = mbedtls_rsa_export( rsa, &T, NULL, NULL, NULL, NULL ) ) != 0 ||
-         ( ret = mbedtls_asn1_write_mpi( p, start, &T ) ) < 0 )
+    if ((ret = mbedtls_rsa_export(rsa, &T, NULL, NULL, NULL, NULL)) != 0 ||
+        (ret = mbedtls_asn1_write_mpi(p, start, &T)) < 0) {
         goto end_of_export;
+    }
     len += ret;
 
 end_of_export:
 
-    mbedtls_mpi_free( &T );
-    if( ret < 0 )
-        return( ret );
+    mbedtls_mpi_free(&T);
+    if (ret < 0) {
+        return ret;
+    }
 
-    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) );
-    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_CONSTRUCTED |
-                                                 MBEDTLS_ASN1_SEQUENCE ) );
+    MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_len(p, start, len));
+    MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_tag(p, start, MBEDTLS_ASN1_CONSTRUCTED |
+                                                     MBEDTLS_ASN1_SEQUENCE));
 
-    return( (int) len );
+    return (int) len;
 }
 #endif /* MBEDTLS_RSA_C */
 
@@ -99,27 +102,27 @@
 /*
  * EC public key is an EC point
  */
-static int pk_write_ec_pubkey( unsigned char **p, unsigned char *start,
-                               mbedtls_ecp_keypair *ec )
+static int pk_write_ec_pubkey(unsigned char **p, unsigned char *start,
+                              mbedtls_ecp_keypair *ec)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t len = 0;
     unsigned char buf[MBEDTLS_ECP_MAX_PT_LEN];
 
-    if( ( ret = mbedtls_ecp_point_write_binary( &ec->grp, &ec->Q,
-                                        MBEDTLS_ECP_PF_UNCOMPRESSED,
-                                        &len, buf, sizeof( buf ) ) ) != 0 )
-    {
-        return( ret );
+    if ((ret = mbedtls_ecp_point_write_binary(&ec->grp, &ec->Q,
+                                              MBEDTLS_ECP_PF_UNCOMPRESSED,
+                                              &len, buf, sizeof(buf))) != 0) {
+        return ret;
     }
 
-    if( *p < start || (size_t)( *p - start ) < len )
-        return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL );
+    if (*p < start || (size_t) (*p - start) < len) {
+        return MBEDTLS_ERR_ASN1_BUF_TOO_SMALL;
+    }
 
     *p -= len;
-    memcpy( *p, buf, len );
+    memcpy(*p, buf, len);
 
-    return( (int) len );
+    return (int) len;
 }
 
 /*
@@ -127,88 +130,86 @@
  *   namedCurve         OBJECT IDENTIFIER
  * }
  */
-static int pk_write_ec_param( unsigned char **p, unsigned char *start,
-                              mbedtls_ecp_keypair *ec )
+static int pk_write_ec_param(unsigned char **p, unsigned char *start,
+                             mbedtls_ecp_keypair *ec)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t len = 0;
     const char *oid;
     size_t oid_len;
 
-    if( ( ret = mbedtls_oid_get_oid_by_ec_grp( ec->grp.id, &oid, &oid_len ) ) != 0 )
-        return( ret );
+    if ((ret = mbedtls_oid_get_oid_by_ec_grp(ec->grp.id, &oid, &oid_len)) != 0) {
+        return ret;
+    }
 
-    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_oid( p, start, oid, oid_len ) );
+    MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_oid(p, start, oid, oid_len));
 
-    return( (int) len );
+    return (int) len;
 }
 
 /*
  * privateKey  OCTET STRING -- always of length ceil(log2(n)/8)
  */
-static int pk_write_ec_private( unsigned char **p, unsigned char *start,
-                                mbedtls_ecp_keypair *ec )
+static int pk_write_ec_private(unsigned char **p, unsigned char *start,
+                               mbedtls_ecp_keypair *ec)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    size_t byte_length = ( ec->grp.pbits + 7 ) / 8;
+    size_t byte_length = (ec->grp.pbits + 7) / 8;
     unsigned char tmp[MBEDTLS_ECP_MAX_BYTES];
 
-    ret = mbedtls_ecp_write_key( ec, tmp, byte_length );
-    if( ret != 0 )
+    ret = mbedtls_ecp_write_key(ec, tmp, byte_length);
+    if (ret != 0) {
         goto exit;
-    ret = mbedtls_asn1_write_octet_string( p, start, tmp, byte_length );
+    }
+    ret = mbedtls_asn1_write_octet_string(p, start, tmp, byte_length);
 
 exit:
-    mbedtls_platform_zeroize( tmp, byte_length );
-    return( ret );
+    mbedtls_platform_zeroize(tmp, byte_length);
+    return ret;
 }
 #endif /* MBEDTLS_ECP_C */
 
-int mbedtls_pk_write_pubkey( unsigned char **p, unsigned char *start,
-                             const mbedtls_pk_context *key )
+int mbedtls_pk_write_pubkey(unsigned char **p, unsigned char *start,
+                            const mbedtls_pk_context *key)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t len = 0;
 
 #if defined(MBEDTLS_RSA_C)
-    if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_RSA )
-        MBEDTLS_ASN1_CHK_ADD( len, pk_write_rsa_pubkey( p, start, mbedtls_pk_rsa( *key ) ) );
-    else
+    if (mbedtls_pk_get_type(key) == MBEDTLS_PK_RSA) {
+        MBEDTLS_ASN1_CHK_ADD(len, pk_write_rsa_pubkey(p, start, mbedtls_pk_rsa(*key)));
+    } else
 #endif
 #if defined(MBEDTLS_ECP_C)
-    if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_ECKEY )
-        MBEDTLS_ASN1_CHK_ADD( len, pk_write_ec_pubkey( p, start, mbedtls_pk_ec( *key ) ) );
-    else
+    if (mbedtls_pk_get_type(key) == MBEDTLS_PK_ECKEY) {
+        MBEDTLS_ASN1_CHK_ADD(len, pk_write_ec_pubkey(p, start, mbedtls_pk_ec(*key)));
+    } else
 #endif
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
-    if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_OPAQUE )
-    {
+    if (mbedtls_pk_get_type(key) == MBEDTLS_PK_OPAQUE) {
         size_t buffer_size;
-        mbedtls_svc_key_id_t* key_id = (mbedtls_svc_key_id_t*) key->pk_ctx;
+        mbedtls_svc_key_id_t *key_id = (mbedtls_svc_key_id_t *) key->pk_ctx;
 
-        if ( *p < start )
-            return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
-
-        buffer_size = (size_t)( *p - start );
-        if ( psa_export_public_key( *key_id, start, buffer_size, &len )
-             != PSA_SUCCESS )
-        {
-            return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
+        if (*p < start) {
+            return MBEDTLS_ERR_PK_BAD_INPUT_DATA;
         }
-        else
-        {
+
+        buffer_size = (size_t) (*p - start);
+        if (psa_export_public_key(*key_id, start, buffer_size, &len)
+            != PSA_SUCCESS) {
+            return MBEDTLS_ERR_PK_BAD_INPUT_DATA;
+        } else {
             *p -= len;
-            memmove( *p, start, len );
+            memmove(*p, start, len);
         }
-    }
-    else
+    } else
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
-        return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
+    return MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE;
 
-    return( (int) len );
+    return (int) len;
 }
 
-int mbedtls_pk_write_pubkey_der( const mbedtls_pk_context *key, unsigned char *buf, size_t size )
+int mbedtls_pk_write_pubkey_der(const mbedtls_pk_context *key, unsigned char *buf, size_t size)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char *c;
@@ -216,15 +217,17 @@
     mbedtls_pk_type_t pk_type;
     const char *oid;
 
-    if( size == 0 )
-        return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL );
+    if (size == 0) {
+        return MBEDTLS_ERR_ASN1_BUF_TOO_SMALL;
+    }
 
     c = buf + size;
 
-    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_pk_write_pubkey( &c, buf, key ) );
+    MBEDTLS_ASN1_CHK_ADD(len, mbedtls_pk_write_pubkey(&c, buf, key));
 
-    if( c - buf < 1 )
-        return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL );
+    if (c - buf < 1) {
+        return MBEDTLS_ERR_ASN1_BUF_TOO_SMALL;
+    }
 
     /*
      *  SubjectPublicKeyInfo  ::=  SEQUENCE  {
@@ -234,174 +237,176 @@
     *--c = 0;
     len += 1;
 
-    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) );
-    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_BIT_STRING ) );
+    MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_len(&c, buf, len));
+    MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_tag(&c, buf, MBEDTLS_ASN1_BIT_STRING));
 
-    pk_type = mbedtls_pk_get_type( key );
+    pk_type = mbedtls_pk_get_type(key);
 #if defined(MBEDTLS_ECP_C)
-    if( pk_type == MBEDTLS_PK_ECKEY )
-    {
-        MBEDTLS_ASN1_CHK_ADD( par_len, pk_write_ec_param( &c, buf, mbedtls_pk_ec( *key ) ) );
+    if (pk_type == MBEDTLS_PK_ECKEY) {
+        MBEDTLS_ASN1_CHK_ADD(par_len, pk_write_ec_param(&c, buf, mbedtls_pk_ec(*key)));
     }
 #endif
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
-    if( pk_type == MBEDTLS_PK_OPAQUE )
-    {
+    if (pk_type == MBEDTLS_PK_OPAQUE) {
         psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
         psa_key_type_t key_type;
         mbedtls_svc_key_id_t key_id;
         psa_ecc_family_t curve;
         size_t bits;
 
-        key_id = *((mbedtls_svc_key_id_t*) key->pk_ctx );
-        if( PSA_SUCCESS != psa_get_key_attributes( key_id, &attributes ) )
-            return( MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED );
-        key_type = psa_get_key_type( &attributes );
-        bits = psa_get_key_bits( &attributes );
-        psa_reset_key_attributes( &attributes );
+        key_id = *((mbedtls_svc_key_id_t *) key->pk_ctx);
+        if (PSA_SUCCESS != psa_get_key_attributes(key_id, &attributes)) {
+            return MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED;
+        }
+        key_type = psa_get_key_type(&attributes);
+        bits = psa_get_key_bits(&attributes);
+        psa_reset_key_attributes(&attributes);
 
-        if( PSA_KEY_TYPE_IS_ECC_KEY_PAIR( key_type ) )
-        {
-            curve = PSA_KEY_TYPE_ECC_GET_FAMILY( key_type );
-            if( curve == 0 )
-                return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
+        if (PSA_KEY_TYPE_IS_ECC_KEY_PAIR(key_type)) {
+            curve = PSA_KEY_TYPE_ECC_GET_FAMILY(key_type);
+            if (curve == 0) {
+                return MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE;
+            }
 
-            ret = mbedtls_psa_get_ecc_oid_from_id( curve, bits,
-                                                   &oid, &oid_len );
-            if( ret != 0 )
-                return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
+            ret = mbedtls_psa_get_ecc_oid_from_id(curve, bits,
+                                                  &oid, &oid_len);
+            if (ret != 0) {
+                return MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE;
+            }
 
             /* Write EC algorithm parameters; that's akin
              * to pk_write_ec_param() above. */
-            MBEDTLS_ASN1_CHK_ADD( par_len, mbedtls_asn1_write_oid( &c, buf,
-                                                                   oid,
-                                                                   oid_len ) );
+            MBEDTLS_ASN1_CHK_ADD(par_len, mbedtls_asn1_write_oid(&c, buf,
+                                                                 oid,
+                                                                 oid_len));
 
             /* The rest of the function works as for legacy EC contexts. */
             pk_type = MBEDTLS_PK_ECKEY;
-        }
-        else if( PSA_KEY_TYPE_IS_RSA( key_type ) )
-        {
+        } else if (PSA_KEY_TYPE_IS_RSA(key_type)) {
             /* The rest of the function works as for legacy RSA contexts. */
             pk_type = MBEDTLS_PK_RSA;
-        }
-        else
-        {
-            return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
+        } else {
+            return MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE;
         }
     }
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
 
-    if( ( ret = mbedtls_oid_get_oid_by_pk_alg( pk_type, &oid,
-                                               &oid_len ) ) != 0 )
-    {
-        return( ret );
+    if ((ret = mbedtls_oid_get_oid_by_pk_alg(pk_type, &oid,
+                                             &oid_len)) != 0) {
+        return ret;
     }
 
-    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_algorithm_identifier( &c, buf, oid, oid_len,
-                                                        par_len ) );
+    MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_algorithm_identifier(&c, buf, oid, oid_len,
+                                                                      par_len));
 
-    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) );
-    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_CONSTRUCTED |
-                                                MBEDTLS_ASN1_SEQUENCE ) );
+    MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_len(&c, buf, len));
+    MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_tag(&c, buf, MBEDTLS_ASN1_CONSTRUCTED |
+                                                     MBEDTLS_ASN1_SEQUENCE));
 
-    return( (int) len );
+    return (int) len;
 }
 
-int mbedtls_pk_write_key_der( const mbedtls_pk_context *key, unsigned char *buf, size_t size )
+int mbedtls_pk_write_key_der(const mbedtls_pk_context *key, unsigned char *buf, size_t size)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char *c;
     size_t len = 0;
 
-    if( size == 0 )
-        return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL );
+    if (size == 0) {
+        return MBEDTLS_ERR_ASN1_BUF_TOO_SMALL;
+    }
 
     c = buf + size;
 
 #if defined(MBEDTLS_RSA_C)
-    if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_RSA )
-    {
+    if (mbedtls_pk_get_type(key) == MBEDTLS_PK_RSA) {
         mbedtls_mpi T; /* Temporary holding the exported parameters */
-        mbedtls_rsa_context *rsa = mbedtls_pk_rsa( *key );
+        mbedtls_rsa_context *rsa = mbedtls_pk_rsa(*key);
 
         /*
          * Export the parameters one after another to avoid simultaneous copies.
          */
 
-        mbedtls_mpi_init( &T );
+        mbedtls_mpi_init(&T);
 
         /* Export QP */
-        if( ( ret = mbedtls_rsa_export_crt( rsa, NULL, NULL, &T ) ) != 0 ||
-            ( ret = mbedtls_asn1_write_mpi( &c, buf, &T ) ) < 0 )
+        if ((ret = mbedtls_rsa_export_crt(rsa, NULL, NULL, &T)) != 0 ||
+            (ret = mbedtls_asn1_write_mpi(&c, buf, &T)) < 0) {
             goto end_of_export;
+        }
         len += ret;
 
         /* Export DQ */
-        if( ( ret = mbedtls_rsa_export_crt( rsa, NULL, &T, NULL ) ) != 0 ||
-            ( ret = mbedtls_asn1_write_mpi( &c, buf, &T ) ) < 0 )
+        if ((ret = mbedtls_rsa_export_crt(rsa, NULL, &T, NULL)) != 0 ||
+            (ret = mbedtls_asn1_write_mpi(&c, buf, &T)) < 0) {
             goto end_of_export;
+        }
         len += ret;
 
         /* Export DP */
-        if( ( ret = mbedtls_rsa_export_crt( rsa, &T, NULL, NULL ) ) != 0 ||
-            ( ret = mbedtls_asn1_write_mpi( &c, buf, &T ) ) < 0 )
+        if ((ret = mbedtls_rsa_export_crt(rsa, &T, NULL, NULL)) != 0 ||
+            (ret = mbedtls_asn1_write_mpi(&c, buf, &T)) < 0) {
             goto end_of_export;
+        }
         len += ret;
 
         /* Export Q */
-        if ( ( ret = mbedtls_rsa_export( rsa, NULL, NULL,
-                                         &T, NULL, NULL ) ) != 0 ||
-             ( ret = mbedtls_asn1_write_mpi( &c, buf, &T ) ) < 0 )
+        if ((ret = mbedtls_rsa_export(rsa, NULL, NULL,
+                                      &T, NULL, NULL)) != 0 ||
+            (ret = mbedtls_asn1_write_mpi(&c, buf, &T)) < 0) {
             goto end_of_export;
+        }
         len += ret;
 
         /* Export P */
-        if ( ( ret = mbedtls_rsa_export( rsa, NULL, &T,
-                                         NULL, NULL, NULL ) ) != 0 ||
-             ( ret = mbedtls_asn1_write_mpi( &c, buf, &T ) ) < 0 )
+        if ((ret = mbedtls_rsa_export(rsa, NULL, &T,
+                                      NULL, NULL, NULL)) != 0 ||
+            (ret = mbedtls_asn1_write_mpi(&c, buf, &T)) < 0) {
             goto end_of_export;
+        }
         len += ret;
 
         /* Export D */
-        if ( ( ret = mbedtls_rsa_export( rsa, NULL, NULL,
-                                         NULL, &T, NULL ) ) != 0 ||
-             ( ret = mbedtls_asn1_write_mpi( &c, buf, &T ) ) < 0 )
+        if ((ret = mbedtls_rsa_export(rsa, NULL, NULL,
+                                      NULL, &T, NULL)) != 0 ||
+            (ret = mbedtls_asn1_write_mpi(&c, buf, &T)) < 0) {
             goto end_of_export;
+        }
         len += ret;
 
         /* Export E */
-        if ( ( ret = mbedtls_rsa_export( rsa, NULL, NULL,
-                                         NULL, NULL, &T ) ) != 0 ||
-             ( ret = mbedtls_asn1_write_mpi( &c, buf, &T ) ) < 0 )
+        if ((ret = mbedtls_rsa_export(rsa, NULL, NULL,
+                                      NULL, NULL, &T)) != 0 ||
+            (ret = mbedtls_asn1_write_mpi(&c, buf, &T)) < 0) {
             goto end_of_export;
+        }
         len += ret;
 
         /* Export N */
-        if ( ( ret = mbedtls_rsa_export( rsa, &T, NULL,
-                                         NULL, NULL, NULL ) ) != 0 ||
-             ( ret = mbedtls_asn1_write_mpi( &c, buf, &T ) ) < 0 )
+        if ((ret = mbedtls_rsa_export(rsa, &T, NULL,
+                                      NULL, NULL, NULL)) != 0 ||
+            (ret = mbedtls_asn1_write_mpi(&c, buf, &T)) < 0) {
             goto end_of_export;
+        }
         len += ret;
 
-    end_of_export:
+end_of_export:
 
-        mbedtls_mpi_free( &T );
-        if( ret < 0 )
-            return( ret );
+        mbedtls_mpi_free(&T);
+        if (ret < 0) {
+            return ret;
+        }
 
-        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_int( &c, buf, 0 ) );
-        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) );
-        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c,
-                                               buf, MBEDTLS_ASN1_CONSTRUCTED |
-                                               MBEDTLS_ASN1_SEQUENCE ) );
-    }
-    else
+        MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_int(&c, buf, 0));
+        MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_len(&c, buf, len));
+        MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_tag(&c,
+                                                         buf, MBEDTLS_ASN1_CONSTRUCTED |
+                                                         MBEDTLS_ASN1_SEQUENCE));
+    } else
 #endif /* MBEDTLS_RSA_C */
 #if defined(MBEDTLS_ECP_C)
-    if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_ECKEY )
-    {
-        mbedtls_ecp_keypair *ec = mbedtls_pk_ec( *key );
+    if (mbedtls_pk_get_type(key) == MBEDTLS_PK_ECKEY) {
+        mbedtls_ecp_keypair *ec = mbedtls_pk_ec(*key);
         size_t pub_len = 0, par_len = 0;
 
         /*
@@ -416,44 +421,46 @@
          */
 
         /* publicKey */
-        MBEDTLS_ASN1_CHK_ADD( pub_len, pk_write_ec_pubkey( &c, buf, ec ) );
+        MBEDTLS_ASN1_CHK_ADD(pub_len, pk_write_ec_pubkey(&c, buf, ec));
 
-        if( c - buf < 1 )
-            return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL );
+        if (c - buf < 1) {
+            return MBEDTLS_ERR_ASN1_BUF_TOO_SMALL;
+        }
         *--c = 0;
         pub_len += 1;
 
-        MBEDTLS_ASN1_CHK_ADD( pub_len, mbedtls_asn1_write_len( &c, buf, pub_len ) );
-        MBEDTLS_ASN1_CHK_ADD( pub_len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_BIT_STRING ) );
+        MBEDTLS_ASN1_CHK_ADD(pub_len, mbedtls_asn1_write_len(&c, buf, pub_len));
+        MBEDTLS_ASN1_CHK_ADD(pub_len, mbedtls_asn1_write_tag(&c, buf, MBEDTLS_ASN1_BIT_STRING));
 
-        MBEDTLS_ASN1_CHK_ADD( pub_len, mbedtls_asn1_write_len( &c, buf, pub_len ) );
-        MBEDTLS_ASN1_CHK_ADD( pub_len, mbedtls_asn1_write_tag( &c, buf,
-                            MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 1 ) );
+        MBEDTLS_ASN1_CHK_ADD(pub_len, mbedtls_asn1_write_len(&c, buf, pub_len));
+        MBEDTLS_ASN1_CHK_ADD(pub_len, mbedtls_asn1_write_tag(&c, buf,
+                                                             MBEDTLS_ASN1_CONTEXT_SPECIFIC |
+                                                             MBEDTLS_ASN1_CONSTRUCTED | 1));
         len += pub_len;
 
         /* parameters */
-        MBEDTLS_ASN1_CHK_ADD( par_len, pk_write_ec_param( &c, buf, ec ) );
+        MBEDTLS_ASN1_CHK_ADD(par_len, pk_write_ec_param(&c, buf, ec));
 
-        MBEDTLS_ASN1_CHK_ADD( par_len, mbedtls_asn1_write_len( &c, buf, par_len ) );
-        MBEDTLS_ASN1_CHK_ADD( par_len, mbedtls_asn1_write_tag( &c, buf,
-                            MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 0 ) );
+        MBEDTLS_ASN1_CHK_ADD(par_len, mbedtls_asn1_write_len(&c, buf, par_len));
+        MBEDTLS_ASN1_CHK_ADD(par_len, mbedtls_asn1_write_tag(&c, buf,
+                                                             MBEDTLS_ASN1_CONTEXT_SPECIFIC |
+                                                             MBEDTLS_ASN1_CONSTRUCTED | 0));
         len += par_len;
 
         /* privateKey */
-        MBEDTLS_ASN1_CHK_ADD( len, pk_write_ec_private( &c, buf, ec ) );
+        MBEDTLS_ASN1_CHK_ADD(len, pk_write_ec_private(&c, buf, ec));
 
         /* version */
-        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_int( &c, buf, 1 ) );
+        MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_int(&c, buf, 1));
 
-        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) );
-        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_CONSTRUCTED |
-                                                    MBEDTLS_ASN1_SEQUENCE ) );
-    }
-    else
+        MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_len(&c, buf, len));
+        MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_tag(&c, buf, MBEDTLS_ASN1_CONSTRUCTED |
+                                                         MBEDTLS_ASN1_SEQUENCE));
+    } else
 #endif /* MBEDTLS_ECP_C */
-        return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
+    return MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE;
 
-    return( (int) len );
+    return (int) len;
 }
 
 #if defined(MBEDTLS_PEM_WRITE_C)
@@ -467,70 +474,64 @@
 #define PEM_END_PRIVATE_KEY_EC      "-----END EC PRIVATE KEY-----\n"
 
 #define PUB_DER_MAX_BYTES                                                   \
-    ( MBEDTLS_PK_RSA_PUB_DER_MAX_BYTES > MBEDTLS_PK_ECP_PUB_DER_MAX_BYTES ? \
-      MBEDTLS_PK_RSA_PUB_DER_MAX_BYTES : MBEDTLS_PK_ECP_PUB_DER_MAX_BYTES )
+    (MBEDTLS_PK_RSA_PUB_DER_MAX_BYTES > MBEDTLS_PK_ECP_PUB_DER_MAX_BYTES ? \
+     MBEDTLS_PK_RSA_PUB_DER_MAX_BYTES : MBEDTLS_PK_ECP_PUB_DER_MAX_BYTES)
 #define PRV_DER_MAX_BYTES                                                   \
-    ( MBEDTLS_PK_RSA_PRV_DER_MAX_BYTES > MBEDTLS_PK_ECP_PRV_DER_MAX_BYTES ? \
-      MBEDTLS_PK_RSA_PRV_DER_MAX_BYTES : MBEDTLS_PK_ECP_PRV_DER_MAX_BYTES )
+    (MBEDTLS_PK_RSA_PRV_DER_MAX_BYTES > MBEDTLS_PK_ECP_PRV_DER_MAX_BYTES ? \
+     MBEDTLS_PK_RSA_PRV_DER_MAX_BYTES : MBEDTLS_PK_ECP_PRV_DER_MAX_BYTES)
 
-int mbedtls_pk_write_pubkey_pem( const mbedtls_pk_context *key, unsigned char *buf, size_t size )
+int mbedtls_pk_write_pubkey_pem(const mbedtls_pk_context *key, unsigned char *buf, size_t size)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char output_buf[PUB_DER_MAX_BYTES];
     size_t olen = 0;
 
-    if( ( ret = mbedtls_pk_write_pubkey_der( key, output_buf,
-                                     sizeof(output_buf) ) ) < 0 )
-    {
-        return( ret );
+    if ((ret = mbedtls_pk_write_pubkey_der(key, output_buf,
+                                           sizeof(output_buf))) < 0) {
+        return ret;
     }
 
-    if( ( ret = mbedtls_pem_write_buffer( PEM_BEGIN_PUBLIC_KEY, PEM_END_PUBLIC_KEY,
-                                  output_buf + sizeof(output_buf) - ret,
-                                  ret, buf, size, &olen ) ) != 0 )
-    {
-        return( ret );
+    if ((ret = mbedtls_pem_write_buffer(PEM_BEGIN_PUBLIC_KEY, PEM_END_PUBLIC_KEY,
+                                        output_buf + sizeof(output_buf) - ret,
+                                        ret, buf, size, &olen)) != 0) {
+        return ret;
     }
 
-    return( 0 );
+    return 0;
 }
 
-int mbedtls_pk_write_key_pem( const mbedtls_pk_context *key, unsigned char *buf, size_t size )
+int mbedtls_pk_write_key_pem(const mbedtls_pk_context *key, unsigned char *buf, size_t size)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char output_buf[PRV_DER_MAX_BYTES];
     const char *begin, *end;
     size_t olen = 0;
 
-    if( ( ret = mbedtls_pk_write_key_der( key, output_buf, sizeof(output_buf) ) ) < 0 )
-        return( ret );
+    if ((ret = mbedtls_pk_write_key_der(key, output_buf, sizeof(output_buf))) < 0) {
+        return ret;
+    }
 
 #if defined(MBEDTLS_RSA_C)
-    if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_RSA )
-    {
+    if (mbedtls_pk_get_type(key) == MBEDTLS_PK_RSA) {
         begin = PEM_BEGIN_PRIVATE_KEY_RSA;
         end = PEM_END_PRIVATE_KEY_RSA;
-    }
-    else
+    } else
 #endif
 #if defined(MBEDTLS_ECP_C)
-    if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_ECKEY )
-    {
+    if (mbedtls_pk_get_type(key) == MBEDTLS_PK_ECKEY) {
         begin = PEM_BEGIN_PRIVATE_KEY_EC;
         end = PEM_END_PRIVATE_KEY_EC;
-    }
-    else
+    } else
 #endif
-        return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
+    return MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE;
 
-    if( ( ret = mbedtls_pem_write_buffer( begin, end,
-                                  output_buf + sizeof(output_buf) - ret,
-                                  ret, buf, size, &olen ) ) != 0 )
-    {
-        return( ret );
+    if ((ret = mbedtls_pem_write_buffer(begin, end,
+                                        output_buf + sizeof(output_buf) - ret,
+                                        ret, buf, size, &olen)) != 0) {
+        return ret;
     }
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_PEM_WRITE_C */