diff --git a/library/pkcs5.c b/library/pkcs5.c
index f9d0137..52f1a0d 100644
--- a/library/pkcs5.c
+++ b/library/pkcs5.c
@@ -45,18 +45,19 @@
 #include "mbedtls/platform.h"
 
 #if defined(MBEDTLS_ASN1_PARSE_C)
-static int pkcs5_parse_pbkdf2_params( const mbedtls_asn1_buf *params,
-                                      mbedtls_asn1_buf *salt, int *iterations,
-                                      int *keylen, mbedtls_md_type_t *md_type )
+static int pkcs5_parse_pbkdf2_params(const mbedtls_asn1_buf *params,
+                                     mbedtls_asn1_buf *salt, int *iterations,
+                                     int *keylen, mbedtls_md_type_t *md_type)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     mbedtls_asn1_buf prf_alg_oid;
     unsigned char *p = params->p;
     const unsigned char *end = params->p + params->len;
 
-    if( params->tag != ( MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PKCS5_INVALID_FORMAT,
-                MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ) );
+    if (params->tag != (MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PKCS5_INVALID_FORMAT,
+                                 MBEDTLS_ERR_ASN1_UNEXPECTED_TAG);
+    }
     /*
      *  PBKDF2-params ::= SEQUENCE {
      *    salt              OCTET STRING,
@@ -66,45 +67,52 @@
      *  }
      *
      */
-    if( ( ret = mbedtls_asn1_get_tag( &p, end, &salt->len,
-                                      MBEDTLS_ASN1_OCTET_STRING ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PKCS5_INVALID_FORMAT, ret ) );
+    if ((ret = mbedtls_asn1_get_tag(&p, end, &salt->len,
+                                    MBEDTLS_ASN1_OCTET_STRING)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PKCS5_INVALID_FORMAT, ret);
+    }
 
     salt->p = p;
     p += salt->len;
 
-    if( ( ret = mbedtls_asn1_get_int( &p, end, iterations ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PKCS5_INVALID_FORMAT, ret ) );
-
-    if( p == end )
-        return( 0 );
-
-    if( ( ret = mbedtls_asn1_get_int( &p, end, keylen ) ) != 0 )
-    {
-        if( ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
-            return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PKCS5_INVALID_FORMAT, ret ) );
+    if ((ret = mbedtls_asn1_get_int(&p, end, iterations)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PKCS5_INVALID_FORMAT, ret);
     }
 
-    if( p == end )
-        return( 0 );
+    if (p == end) {
+        return 0;
+    }
 
-    if( ( ret = mbedtls_asn1_get_alg_null( &p, end, &prf_alg_oid ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PKCS5_INVALID_FORMAT, ret ) );
+    if ((ret = mbedtls_asn1_get_int(&p, end, keylen)) != 0) {
+        if (ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG) {
+            return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PKCS5_INVALID_FORMAT, ret);
+        }
+    }
 
-    if( mbedtls_oid_get_md_hmac( &prf_alg_oid, md_type ) != 0 )
-        return( MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE );
+    if (p == end) {
+        return 0;
+    }
 
-    if( p != end )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PKCS5_INVALID_FORMAT,
-                MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ) );
+    if ((ret = mbedtls_asn1_get_alg_null(&p, end, &prf_alg_oid)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PKCS5_INVALID_FORMAT, ret);
+    }
 
-    return( 0 );
+    if (mbedtls_oid_get_md_hmac(&prf_alg_oid, md_type) != 0) {
+        return MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE;
+    }
+
+    if (p != end) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PKCS5_INVALID_FORMAT,
+                                 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
+    }
+
+    return 0;
 }
 
-int mbedtls_pkcs5_pbes2( const mbedtls_asn1_buf *pbe_params, int mode,
-                 const unsigned char *pwd,  size_t pwdlen,
-                 const unsigned char *data, size_t datalen,
-                 unsigned char *output )
+int mbedtls_pkcs5_pbes2(const mbedtls_asn1_buf *pbe_params, int mode,
+                        const unsigned char *pwd,  size_t pwdlen,
+                        const unsigned char *data, size_t datalen,
+                        unsigned char *output)
 {
     int ret, iterations = 0, keylen = 0;
     unsigned char *p, *end;
@@ -128,42 +136,46 @@
      *    encryptionScheme AlgorithmIdentifier {{PBES2-Encs}}
      *  }
      */
-    if( pbe_params->tag != ( MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PKCS5_INVALID_FORMAT,
-                MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ) );
+    if (pbe_params->tag != (MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PKCS5_INVALID_FORMAT,
+                                 MBEDTLS_ERR_ASN1_UNEXPECTED_TAG);
+    }
 
-    if( ( ret = mbedtls_asn1_get_alg( &p, end, &kdf_alg_oid,
-                                      &kdf_alg_params ) ) != 0 )
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PKCS5_INVALID_FORMAT, ret ) );
+    if ((ret = mbedtls_asn1_get_alg(&p, end, &kdf_alg_oid,
+                                    &kdf_alg_params)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PKCS5_INVALID_FORMAT, ret);
+    }
 
     // Only PBKDF2 supported at the moment
     //
-    if( MBEDTLS_OID_CMP( MBEDTLS_OID_PKCS5_PBKDF2, &kdf_alg_oid ) != 0 )
-        return( MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE );
-
-    if( ( ret = pkcs5_parse_pbkdf2_params( &kdf_alg_params,
-                                           &salt, &iterations, &keylen,
-                                           &md_type ) ) != 0 )
-    {
-        return( ret );
+    if (MBEDTLS_OID_CMP(MBEDTLS_OID_PKCS5_PBKDF2, &kdf_alg_oid) != 0) {
+        return MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE;
     }
 
-    md_info = mbedtls_md_info_from_type( md_type );
-    if( md_info == NULL )
-        return( MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE );
-
-    if( ( ret = mbedtls_asn1_get_alg( &p, end, &enc_scheme_oid,
-                              &enc_scheme_params ) ) != 0 )
-    {
-        return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_PKCS5_INVALID_FORMAT, ret ) );
+    if ((ret = pkcs5_parse_pbkdf2_params(&kdf_alg_params,
+                                         &salt, &iterations, &keylen,
+                                         &md_type)) != 0) {
+        return ret;
     }
 
-    if( mbedtls_oid_get_cipher_alg( &enc_scheme_oid, &cipher_alg ) != 0 )
-        return( MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE );
+    md_info = mbedtls_md_info_from_type(md_type);
+    if (md_info == NULL) {
+        return MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE;
+    }
 
-    cipher_info = mbedtls_cipher_info_from_type( cipher_alg );
-    if( cipher_info == NULL )
-        return( MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE );
+    if ((ret = mbedtls_asn1_get_alg(&p, end, &enc_scheme_oid,
+                                    &enc_scheme_params)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PKCS5_INVALID_FORMAT, ret);
+    }
+
+    if (mbedtls_oid_get_cipher_alg(&enc_scheme_oid, &cipher_alg) != 0) {
+        return MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE;
+    }
+
+    cipher_info = mbedtls_cipher_info_from_type(cipher_alg);
+    if (cipher_info == NULL) {
+        return MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE;
+    }
 
     /*
      * The value of keylen from pkcs5_parse_pbkdf2_params() is ignored
@@ -171,143 +183,156 @@
      */
     keylen = cipher_info->key_bitlen / 8;
 
-    if( enc_scheme_params.tag != MBEDTLS_ASN1_OCTET_STRING ||
-        enc_scheme_params.len != cipher_info->iv_size )
-    {
-        return( MBEDTLS_ERR_PKCS5_INVALID_FORMAT );
+    if (enc_scheme_params.tag != MBEDTLS_ASN1_OCTET_STRING ||
+        enc_scheme_params.len != cipher_info->iv_size) {
+        return MBEDTLS_ERR_PKCS5_INVALID_FORMAT;
     }
 
-    mbedtls_md_init( &md_ctx );
-    mbedtls_cipher_init( &cipher_ctx );
+    mbedtls_md_init(&md_ctx);
+    mbedtls_cipher_init(&cipher_ctx);
 
-    memcpy( iv, enc_scheme_params.p, enc_scheme_params.len );
+    memcpy(iv, enc_scheme_params.p, enc_scheme_params.len);
 
-    if( ( ret = mbedtls_md_setup( &md_ctx, md_info, 1 ) ) != 0 )
-        goto exit;
-
-    if( ( ret = mbedtls_pkcs5_pbkdf2_hmac( &md_ctx, pwd, pwdlen, salt.p, salt.len,
-                                   iterations, keylen, key ) ) != 0 )
-    {
+    if ((ret = mbedtls_md_setup(&md_ctx, md_info, 1)) != 0) {
         goto exit;
     }
 
-    if( ( ret = mbedtls_cipher_setup( &cipher_ctx, cipher_info ) ) != 0 )
+    if ((ret = mbedtls_pkcs5_pbkdf2_hmac(&md_ctx, pwd, pwdlen, salt.p, salt.len,
+                                         iterations, keylen, key)) != 0) {
         goto exit;
+    }
 
-    if( ( ret = mbedtls_cipher_setkey( &cipher_ctx, key, 8 * keylen,
-                                       (mbedtls_operation_t) mode ) ) != 0 )
+    if ((ret = mbedtls_cipher_setup(&cipher_ctx, cipher_info)) != 0) {
         goto exit;
+    }
 
-    if( ( ret = mbedtls_cipher_crypt( &cipher_ctx, iv, enc_scheme_params.len,
-                              data, datalen, output, &olen ) ) != 0 )
+    if ((ret = mbedtls_cipher_setkey(&cipher_ctx, key, 8 * keylen,
+                                     (mbedtls_operation_t) mode)) != 0) {
+        goto exit;
+    }
+
+    if ((ret = mbedtls_cipher_crypt(&cipher_ctx, iv, enc_scheme_params.len,
+                                    data, datalen, output, &olen)) != 0) {
         ret = MBEDTLS_ERR_PKCS5_PASSWORD_MISMATCH;
+    }
 
 exit:
-    mbedtls_md_free( &md_ctx );
-    mbedtls_cipher_free( &cipher_ctx );
+    mbedtls_md_free(&md_ctx);
+    mbedtls_cipher_free(&cipher_ctx);
 
-    return( ret );
+    return ret;
 }
 #endif /* MBEDTLS_ASN1_PARSE_C */
 
-int mbedtls_pkcs5_pbkdf2_hmac( mbedtls_md_context_t *ctx,
-                       const unsigned char *password,
-                       size_t plen, const unsigned char *salt, size_t slen,
-                       unsigned int iteration_count,
-                       uint32_t key_length, unsigned char *output )
+int mbedtls_pkcs5_pbkdf2_hmac(mbedtls_md_context_t *ctx,
+                              const unsigned char *password,
+                              size_t plen, const unsigned char *salt, size_t slen,
+                              unsigned int iteration_count,
+                              uint32_t key_length, unsigned char *output)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     int j;
     unsigned int i;
     unsigned char md1[MBEDTLS_MD_MAX_SIZE];
     unsigned char work[MBEDTLS_MD_MAX_SIZE];
-    unsigned char md_size = mbedtls_md_get_size( ctx->md_info );
+    unsigned char md_size = mbedtls_md_get_size(ctx->md_info);
     size_t use_len;
     unsigned char *out_p = output;
     unsigned char counter[4];
 
-    memset( counter, 0, 4 );
+    memset(counter, 0, 4);
     counter[3] = 1;
 
 #if UINT_MAX > 0xFFFFFFFF
-    if( iteration_count > 0xFFFFFFFF )
-        return( MBEDTLS_ERR_PKCS5_BAD_INPUT_DATA );
+    if (iteration_count > 0xFFFFFFFF) {
+        return MBEDTLS_ERR_PKCS5_BAD_INPUT_DATA;
+    }
 #endif
 
-    if( ( ret = mbedtls_md_hmac_starts( ctx, password, plen ) ) != 0 )
-        return( ret );
-    while( key_length )
-    {
+    if ((ret = mbedtls_md_hmac_starts(ctx, password, plen)) != 0) {
+        return ret;
+    }
+    while (key_length) {
         // U1 ends up in work
         //
-        if( ( ret = mbedtls_md_hmac_update( ctx, salt, slen ) ) != 0 )
+        if ((ret = mbedtls_md_hmac_update(ctx, salt, slen)) != 0) {
             goto cleanup;
+        }
 
-        if( ( ret = mbedtls_md_hmac_update( ctx, counter, 4 ) ) != 0 )
+        if ((ret = mbedtls_md_hmac_update(ctx, counter, 4)) != 0) {
             goto cleanup;
+        }
 
-        if( ( ret = mbedtls_md_hmac_finish( ctx, work ) ) != 0 )
+        if ((ret = mbedtls_md_hmac_finish(ctx, work)) != 0) {
             goto cleanup;
+        }
 
-        if( ( ret = mbedtls_md_hmac_reset( ctx ) ) != 0 )
+        if ((ret = mbedtls_md_hmac_reset(ctx)) != 0) {
             goto cleanup;
+        }
 
-        memcpy( md1, work, md_size );
+        memcpy(md1, work, md_size);
 
-        for( i = 1; i < iteration_count; i++ )
-        {
+        for (i = 1; i < iteration_count; i++) {
             // U2 ends up in md1
             //
-            if( ( ret = mbedtls_md_hmac_update( ctx, md1, md_size ) ) != 0 )
+            if ((ret = mbedtls_md_hmac_update(ctx, md1, md_size)) != 0) {
                 goto cleanup;
+            }
 
-            if( ( ret = mbedtls_md_hmac_finish( ctx, md1 ) ) != 0 )
+            if ((ret = mbedtls_md_hmac_finish(ctx, md1)) != 0) {
                 goto cleanup;
+            }
 
-            if( ( ret = mbedtls_md_hmac_reset( ctx ) ) != 0 )
+            if ((ret = mbedtls_md_hmac_reset(ctx)) != 0) {
                 goto cleanup;
+            }
 
             // U1 xor U2
             //
-            for( j = 0; j < md_size; j++ )
+            for (j = 0; j < md_size; j++) {
                 work[j] ^= md1[j];
+            }
         }
 
-        use_len = ( key_length < md_size ) ? key_length : md_size;
-        memcpy( out_p, work, use_len );
+        use_len = (key_length < md_size) ? key_length : md_size;
+        memcpy(out_p, work, use_len);
 
         key_length -= (uint32_t) use_len;
         out_p += use_len;
 
-        for( i = 4; i > 0; i-- )
-            if( ++counter[i - 1] != 0 )
+        for (i = 4; i > 0; i--) {
+            if (++counter[i - 1] != 0) {
                 break;
+            }
+        }
     }
 
 cleanup:
     /* Zeroise buffers to clear sensitive data from memory. */
-    mbedtls_platform_zeroize( work, MBEDTLS_MD_MAX_SIZE );
-    mbedtls_platform_zeroize( md1, MBEDTLS_MD_MAX_SIZE );
+    mbedtls_platform_zeroize(work, MBEDTLS_MD_MAX_SIZE);
+    mbedtls_platform_zeroize(md1, MBEDTLS_MD_MAX_SIZE);
 
-    return( ret );
+    return ret;
 }
 
 #if defined(MBEDTLS_SELF_TEST)
 
 #if !defined(MBEDTLS_SHA1_C)
-int mbedtls_pkcs5_self_test( int verbose )
+int mbedtls_pkcs5_self_test(int verbose)
 {
-    if( verbose != 0 )
-        mbedtls_printf( "  PBKDF2 (SHA1): skipped\n\n" );
+    if (verbose != 0) {
+        mbedtls_printf("  PBKDF2 (SHA1): skipped\n\n");
+    }
 
-    return( 0 );
+    return 0;
 }
 #else
 
 #define MAX_TESTS   6
 
 static const size_t plen_test_data[MAX_TESTS] =
-    { 8, 8, 8, 24, 9 };
+{ 8, 8, 8, 24, 9 };
 
 static const unsigned char password_test_data[MAX_TESTS][32] =
 {
@@ -319,7 +344,7 @@
 };
 
 static const size_t slen_test_data[MAX_TESTS] =
-    { 4, 4, 4, 36, 5 };
+{ 4, 4, 4, 36, 5 };
 
 static const unsigned char salt_test_data[MAX_TESTS][40] =
 {
@@ -331,10 +356,10 @@
 };
 
 static const uint32_t it_cnt_test_data[MAX_TESTS] =
-    { 1, 2, 4096, 4096, 4096 };
+{ 1, 2, 4096, 4096, 4096 };
 
 static const uint32_t key_len_test_data[MAX_TESTS] =
-    { 20, 20, 20, 25, 16 };
+{ 20, 20, 20, 25, 16 };
 
 static const unsigned char result_key_test_data[MAX_TESTS][32] =
 {
@@ -355,58 +380,58 @@
       0xcc, 0x37, 0xd7, 0xf0, 0x34, 0x25, 0xe0, 0xc3 },
 };
 
-int mbedtls_pkcs5_self_test( int verbose )
+int mbedtls_pkcs5_self_test(int verbose)
 {
     mbedtls_md_context_t sha1_ctx;
     const mbedtls_md_info_t *info_sha1;
     int ret, i;
     unsigned char key[64];
 
-    mbedtls_md_init( &sha1_ctx );
+    mbedtls_md_init(&sha1_ctx);
 
-    info_sha1 = mbedtls_md_info_from_type( MBEDTLS_MD_SHA1 );
-    if( info_sha1 == NULL )
-    {
+    info_sha1 = mbedtls_md_info_from_type(MBEDTLS_MD_SHA1);
+    if (info_sha1 == NULL) {
         ret = 1;
         goto exit;
     }
 
-    if( ( ret = mbedtls_md_setup( &sha1_ctx, info_sha1, 1 ) ) != 0 )
-    {
+    if ((ret = mbedtls_md_setup(&sha1_ctx, info_sha1, 1)) != 0) {
         ret = 1;
         goto exit;
     }
 
-    for( i = 0; i < MAX_TESTS; i++ )
-    {
-        if( verbose != 0 )
-            mbedtls_printf( "  PBKDF2 (SHA1) #%d: ", i );
+    for (i = 0; i < MAX_TESTS; i++) {
+        if (verbose != 0) {
+            mbedtls_printf("  PBKDF2 (SHA1) #%d: ", i);
+        }
 
-        ret = mbedtls_pkcs5_pbkdf2_hmac( &sha1_ctx, password_test_data[i],
-                                         plen_test_data[i], salt_test_data[i],
-                                         slen_test_data[i], it_cnt_test_data[i],
-                                         key_len_test_data[i], key );
-        if( ret != 0 ||
-            memcmp( result_key_test_data[i], key, key_len_test_data[i] ) != 0 )
-        {
-            if( verbose != 0 )
-                mbedtls_printf( "failed\n" );
+        ret = mbedtls_pkcs5_pbkdf2_hmac(&sha1_ctx, password_test_data[i],
+                                        plen_test_data[i], salt_test_data[i],
+                                        slen_test_data[i], it_cnt_test_data[i],
+                                        key_len_test_data[i], key);
+        if (ret != 0 ||
+            memcmp(result_key_test_data[i], key, key_len_test_data[i]) != 0) {
+            if (verbose != 0) {
+                mbedtls_printf("failed\n");
+            }
 
             ret = 1;
             goto exit;
         }
 
-        if( verbose != 0 )
-            mbedtls_printf( "passed\n" );
+        if (verbose != 0) {
+            mbedtls_printf("passed\n");
+        }
     }
 
-    if( verbose != 0 )
-        mbedtls_printf( "\n" );
+    if (verbose != 0) {
+        mbedtls_printf("\n");
+    }
 
 exit:
-    mbedtls_md_free( &sha1_ctx );
+    mbedtls_md_free(&sha1_ctx);
 
-    return( ret );
+    return ret;
 }
 #endif /* MBEDTLS_SHA1_C */