Simon Cooksey / mbed-os

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features/mbedtls/src/pkcs5.c@0:fb7af294d5d9, 2016-11-17 (annotated)

Committer:
Simon Cooksey
Date:
Thu Nov 17 16:43:53 2016 +0000
Revision:
0:fb7af294d5d9
Initial commit

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Simon Cooksey 0:fb7af294d5d9 1 /**
Simon Cooksey 0:fb7af294d5d9 2 * \file pkcs5.c
Simon Cooksey 0:fb7af294d5d9 3 *
Simon Cooksey 0:fb7af294d5d9 4 * \brief PKCS#5 functions
Simon Cooksey 0:fb7af294d5d9 5 *
Simon Cooksey 0:fb7af294d5d9 6 * \author Mathias Olsson <mathias@kompetensum.com>
Simon Cooksey 0:fb7af294d5d9 7 *
Simon Cooksey 0:fb7af294d5d9 8 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
Simon Cooksey 0:fb7af294d5d9 9 * SPDX-License-Identifier: Apache-2.0
Simon Cooksey 0:fb7af294d5d9 10 *
Simon Cooksey 0:fb7af294d5d9 11 * Licensed under the Apache License, Version 2.0 (the "License"); you may
Simon Cooksey 0:fb7af294d5d9 12 * not use this file except in compliance with the License.
Simon Cooksey 0:fb7af294d5d9 13 * You may obtain a copy of the License at
Simon Cooksey 0:fb7af294d5d9 14 *
Simon Cooksey 0:fb7af294d5d9 15 * http://www.apache.org/licenses/LICENSE-2.0
Simon Cooksey 0:fb7af294d5d9 16 *
Simon Cooksey 0:fb7af294d5d9 17 * Unless required by applicable law or agreed to in writing, software
Simon Cooksey 0:fb7af294d5d9 18 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
Simon Cooksey 0:fb7af294d5d9 19 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Simon Cooksey 0:fb7af294d5d9 20 * See the License for the specific language governing permissions and
Simon Cooksey 0:fb7af294d5d9 21 * limitations under the License.
Simon Cooksey 0:fb7af294d5d9 22 *
Simon Cooksey 0:fb7af294d5d9 23 * This file is part of mbed TLS (https://tls.mbed.org)
Simon Cooksey 0:fb7af294d5d9 24 */
Simon Cooksey 0:fb7af294d5d9 25 /*
Simon Cooksey 0:fb7af294d5d9 26 * PKCS#5 includes PBKDF2 and more
Simon Cooksey 0:fb7af294d5d9 27 *
Simon Cooksey 0:fb7af294d5d9 28 * http://tools.ietf.org/html/rfc2898 (Specification)
Simon Cooksey 0:fb7af294d5d9 29 * http://tools.ietf.org/html/rfc6070 (Test vectors)
Simon Cooksey 0:fb7af294d5d9 30 */
Simon Cooksey 0:fb7af294d5d9 31
Simon Cooksey 0:fb7af294d5d9 32 #if !defined(MBEDTLS_CONFIG_FILE)
Simon Cooksey 0:fb7af294d5d9 33 #include "mbedtls/config.h"
Simon Cooksey 0:fb7af294d5d9 34 #else
Simon Cooksey 0:fb7af294d5d9 35 #include MBEDTLS_CONFIG_FILE
Simon Cooksey 0:fb7af294d5d9 36 #endif
Simon Cooksey 0:fb7af294d5d9 37
Simon Cooksey 0:fb7af294d5d9 38 #if defined(MBEDTLS_PKCS5_C)
Simon Cooksey 0:fb7af294d5d9 39
Simon Cooksey 0:fb7af294d5d9 40 #include "mbedtls/pkcs5.h"
Simon Cooksey 0:fb7af294d5d9 41 #include "mbedtls/asn1.h"
Simon Cooksey 0:fb7af294d5d9 42 #include "mbedtls/cipher.h"
Simon Cooksey 0:fb7af294d5d9 43 #include "mbedtls/oid.h"
Simon Cooksey 0:fb7af294d5d9 44
Simon Cooksey 0:fb7af294d5d9 45 #include <string.h>
Simon Cooksey 0:fb7af294d5d9 46
Simon Cooksey 0:fb7af294d5d9 47 #if defined(MBEDTLS_PLATFORM_C)
Simon Cooksey 0:fb7af294d5d9 48 #include "mbedtls/platform.h"
Simon Cooksey 0:fb7af294d5d9 49 #else
Simon Cooksey 0:fb7af294d5d9 50 #include <stdio.h>
Simon Cooksey 0:fb7af294d5d9 51 #define mbedtls_printf printf
Simon Cooksey 0:fb7af294d5d9 52 #endif
Simon Cooksey 0:fb7af294d5d9 53
Simon Cooksey 0:fb7af294d5d9 54 static int pkcs5_parse_pbkdf2_params( const mbedtls_asn1_buf *params,
Simon Cooksey 0:fb7af294d5d9 55 mbedtls_asn1_buf *salt, int *iterations,
Simon Cooksey 0:fb7af294d5d9 56 int *keylen, mbedtls_md_type_t *md_type )
Simon Cooksey 0:fb7af294d5d9 57 {
Simon Cooksey 0:fb7af294d5d9 58 int ret;
Simon Cooksey 0:fb7af294d5d9 59 mbedtls_asn1_buf prf_alg_oid;
Simon Cooksey 0:fb7af294d5d9 60 unsigned char *p = params->p;
Simon Cooksey 0:fb7af294d5d9 61 const unsigned char *end = params->p + params->len;
Simon Cooksey 0:fb7af294d5d9 62
Simon Cooksey 0:fb7af294d5d9 63 if( params->tag != ( MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) )
Simon Cooksey 0:fb7af294d5d9 64 return( MBEDTLS_ERR_PKCS5_INVALID_FORMAT +
Simon Cooksey 0:fb7af294d5d9 65 MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
Simon Cooksey 0:fb7af294d5d9 66 /*
Simon Cooksey 0:fb7af294d5d9 67 * PBKDF2-params ::= SEQUENCE {
Simon Cooksey 0:fb7af294d5d9 68 * salt OCTET STRING,
Simon Cooksey 0:fb7af294d5d9 69 * iterationCount INTEGER,
Simon Cooksey 0:fb7af294d5d9 70 * keyLength INTEGER OPTIONAL
Simon Cooksey 0:fb7af294d5d9 71 * prf AlgorithmIdentifier DEFAULT algid-hmacWithSHA1
Simon Cooksey 0:fb7af294d5d9 72 * }
Simon Cooksey 0:fb7af294d5d9 73 *
Simon Cooksey 0:fb7af294d5d9 74 */
Simon Cooksey 0:fb7af294d5d9 75 if( ( ret = mbedtls_asn1_get_tag( &p, end, &salt->len, MBEDTLS_ASN1_OCTET_STRING ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 76 return( MBEDTLS_ERR_PKCS5_INVALID_FORMAT + ret );
Simon Cooksey 0:fb7af294d5d9 77
Simon Cooksey 0:fb7af294d5d9 78 salt->p = p;
Simon Cooksey 0:fb7af294d5d9 79 p += salt->len;
Simon Cooksey 0:fb7af294d5d9 80
Simon Cooksey 0:fb7af294d5d9 81 if( ( ret = mbedtls_asn1_get_int( &p, end, iterations ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 82 return( MBEDTLS_ERR_PKCS5_INVALID_FORMAT + ret );
Simon Cooksey 0:fb7af294d5d9 83
Simon Cooksey 0:fb7af294d5d9 84 if( p == end )
Simon Cooksey 0:fb7af294d5d9 85 return( 0 );
Simon Cooksey 0:fb7af294d5d9 86
Simon Cooksey 0:fb7af294d5d9 87 if( ( ret = mbedtls_asn1_get_int( &p, end, keylen ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 88 {
Simon Cooksey 0:fb7af294d5d9 89 if( ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
Simon Cooksey 0:fb7af294d5d9 90 return( MBEDTLS_ERR_PKCS5_INVALID_FORMAT + ret );
Simon Cooksey 0:fb7af294d5d9 91 }
Simon Cooksey 0:fb7af294d5d9 92
Simon Cooksey 0:fb7af294d5d9 93 if( p == end )
Simon Cooksey 0:fb7af294d5d9 94 return( 0 );
Simon Cooksey 0:fb7af294d5d9 95
Simon Cooksey 0:fb7af294d5d9 96 if( ( ret = mbedtls_asn1_get_alg_null( &p, end, &prf_alg_oid ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 97 return( MBEDTLS_ERR_PKCS5_INVALID_FORMAT + ret );
Simon Cooksey 0:fb7af294d5d9 98
Simon Cooksey 0:fb7af294d5d9 99 if( MBEDTLS_OID_CMP( MBEDTLS_OID_HMAC_SHA1, &prf_alg_oid ) != 0 )
Simon Cooksey 0:fb7af294d5d9 100 return( MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE );
Simon Cooksey 0:fb7af294d5d9 101
Simon Cooksey 0:fb7af294d5d9 102 *md_type = MBEDTLS_MD_SHA1;
Simon Cooksey 0:fb7af294d5d9 103
Simon Cooksey 0:fb7af294d5d9 104 if( p != end )
Simon Cooksey 0:fb7af294d5d9 105 return( MBEDTLS_ERR_PKCS5_INVALID_FORMAT +
Simon Cooksey 0:fb7af294d5d9 106 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
Simon Cooksey 0:fb7af294d5d9 107
Simon Cooksey 0:fb7af294d5d9 108 return( 0 );
Simon Cooksey 0:fb7af294d5d9 109 }
Simon Cooksey 0:fb7af294d5d9 110
Simon Cooksey 0:fb7af294d5d9 111 int mbedtls_pkcs5_pbes2( const mbedtls_asn1_buf *pbe_params, int mode,
Simon Cooksey 0:fb7af294d5d9 112 const unsigned char *pwd, size_t pwdlen,
Simon Cooksey 0:fb7af294d5d9 113 const unsigned char *data, size_t datalen,
Simon Cooksey 0:fb7af294d5d9 114 unsigned char *output )
Simon Cooksey 0:fb7af294d5d9 115 {
Simon Cooksey 0:fb7af294d5d9 116 int ret, iterations = 0, keylen = 0;
Simon Cooksey 0:fb7af294d5d9 117 unsigned char *p, *end;
Simon Cooksey 0:fb7af294d5d9 118 mbedtls_asn1_buf kdf_alg_oid, enc_scheme_oid, kdf_alg_params, enc_scheme_params;
Simon Cooksey 0:fb7af294d5d9 119 mbedtls_asn1_buf salt;
Simon Cooksey 0:fb7af294d5d9 120 mbedtls_md_type_t md_type = MBEDTLS_MD_SHA1;
Simon Cooksey 0:fb7af294d5d9 121 unsigned char key[32], iv[32];
Simon Cooksey 0:fb7af294d5d9 122 size_t olen = 0;
Simon Cooksey 0:fb7af294d5d9 123 const mbedtls_md_info_t *md_info;
Simon Cooksey 0:fb7af294d5d9 124 const mbedtls_cipher_info_t *cipher_info;
Simon Cooksey 0:fb7af294d5d9 125 mbedtls_md_context_t md_ctx;
Simon Cooksey 0:fb7af294d5d9 126 mbedtls_cipher_type_t cipher_alg;
Simon Cooksey 0:fb7af294d5d9 127 mbedtls_cipher_context_t cipher_ctx;
Simon Cooksey 0:fb7af294d5d9 128
Simon Cooksey 0:fb7af294d5d9 129 p = pbe_params->p;
Simon Cooksey 0:fb7af294d5d9 130 end = p + pbe_params->len;
Simon Cooksey 0:fb7af294d5d9 131
Simon Cooksey 0:fb7af294d5d9 132 /*
Simon Cooksey 0:fb7af294d5d9 133 * PBES2-params ::= SEQUENCE {
Simon Cooksey 0:fb7af294d5d9 134 * keyDerivationFunc AlgorithmIdentifier {{PBES2-KDFs}},
Simon Cooksey 0:fb7af294d5d9 135 * encryptionScheme AlgorithmIdentifier {{PBES2-Encs}}
Simon Cooksey 0:fb7af294d5d9 136 * }
Simon Cooksey 0:fb7af294d5d9 137 */
Simon Cooksey 0:fb7af294d5d9 138 if( pbe_params->tag != ( MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) )
Simon Cooksey 0:fb7af294d5d9 139 return( MBEDTLS_ERR_PKCS5_INVALID_FORMAT +
Simon Cooksey 0:fb7af294d5d9 140 MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
Simon Cooksey 0:fb7af294d5d9 141
Simon Cooksey 0:fb7af294d5d9 142 if( ( ret = mbedtls_asn1_get_alg( &p, end, &kdf_alg_oid, &kdf_alg_params ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 143 return( MBEDTLS_ERR_PKCS5_INVALID_FORMAT + ret );
Simon Cooksey 0:fb7af294d5d9 144
Simon Cooksey 0:fb7af294d5d9 145 // Only PBKDF2 supported at the moment
Simon Cooksey 0:fb7af294d5d9 146 //
Simon Cooksey 0:fb7af294d5d9 147 if( MBEDTLS_OID_CMP( MBEDTLS_OID_PKCS5_PBKDF2, &kdf_alg_oid ) != 0 )
Simon Cooksey 0:fb7af294d5d9 148 return( MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE );
Simon Cooksey 0:fb7af294d5d9 149
Simon Cooksey 0:fb7af294d5d9 150 if( ( ret = pkcs5_parse_pbkdf2_params( &kdf_alg_params,
Simon Cooksey 0:fb7af294d5d9 151 &salt, &iterations, &keylen,
Simon Cooksey 0:fb7af294d5d9 152 &md_type ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 153 {
Simon Cooksey 0:fb7af294d5d9 154 return( ret );
Simon Cooksey 0:fb7af294d5d9 155 }
Simon Cooksey 0:fb7af294d5d9 156
Simon Cooksey 0:fb7af294d5d9 157 md_info = mbedtls_md_info_from_type( md_type );
Simon Cooksey 0:fb7af294d5d9 158 if( md_info == NULL )
Simon Cooksey 0:fb7af294d5d9 159 return( MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE );
Simon Cooksey 0:fb7af294d5d9 160
Simon Cooksey 0:fb7af294d5d9 161 if( ( ret = mbedtls_asn1_get_alg( &p, end, &enc_scheme_oid,
Simon Cooksey 0:fb7af294d5d9 162 &enc_scheme_params ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 163 {
Simon Cooksey 0:fb7af294d5d9 164 return( MBEDTLS_ERR_PKCS5_INVALID_FORMAT + ret );
Simon Cooksey 0:fb7af294d5d9 165 }
Simon Cooksey 0:fb7af294d5d9 166
Simon Cooksey 0:fb7af294d5d9 167 if( mbedtls_oid_get_cipher_alg( &enc_scheme_oid, &cipher_alg ) != 0 )
Simon Cooksey 0:fb7af294d5d9 168 return( MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE );
Simon Cooksey 0:fb7af294d5d9 169
Simon Cooksey 0:fb7af294d5d9 170 cipher_info = mbedtls_cipher_info_from_type( cipher_alg );
Simon Cooksey 0:fb7af294d5d9 171 if( cipher_info == NULL )
Simon Cooksey 0:fb7af294d5d9 172 return( MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE );
Simon Cooksey 0:fb7af294d5d9 173
Simon Cooksey 0:fb7af294d5d9 174 /*
Simon Cooksey 0:fb7af294d5d9 175 * The value of keylen from pkcs5_parse_pbkdf2_params() is ignored
Simon Cooksey 0:fb7af294d5d9 176 * since it is optional and we don't know if it was set or not
Simon Cooksey 0:fb7af294d5d9 177 */
Simon Cooksey 0:fb7af294d5d9 178 keylen = cipher_info->key_bitlen / 8;
Simon Cooksey 0:fb7af294d5d9 179
Simon Cooksey 0:fb7af294d5d9 180 if( enc_scheme_params.tag != MBEDTLS_ASN1_OCTET_STRING ||
Simon Cooksey 0:fb7af294d5d9 181 enc_scheme_params.len != cipher_info->iv_size )
Simon Cooksey 0:fb7af294d5d9 182 {
Simon Cooksey 0:fb7af294d5d9 183 return( MBEDTLS_ERR_PKCS5_INVALID_FORMAT );
Simon Cooksey 0:fb7af294d5d9 184 }
Simon Cooksey 0:fb7af294d5d9 185
Simon Cooksey 0:fb7af294d5d9 186 mbedtls_md_init( &md_ctx );
Simon Cooksey 0:fb7af294d5d9 187 mbedtls_cipher_init( &cipher_ctx );
Simon Cooksey 0:fb7af294d5d9 188
Simon Cooksey 0:fb7af294d5d9 189 memcpy( iv, enc_scheme_params.p, enc_scheme_params.len );
Simon Cooksey 0:fb7af294d5d9 190
Simon Cooksey 0:fb7af294d5d9 191 if( ( ret = mbedtls_md_setup( &md_ctx, md_info, 1 ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 192 goto exit;
Simon Cooksey 0:fb7af294d5d9 193
Simon Cooksey 0:fb7af294d5d9 194 if( ( ret = mbedtls_pkcs5_pbkdf2_hmac( &md_ctx, pwd, pwdlen, salt.p, salt.len,
Simon Cooksey 0:fb7af294d5d9 195 iterations, keylen, key ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 196 {
Simon Cooksey 0:fb7af294d5d9 197 goto exit;
Simon Cooksey 0:fb7af294d5d9 198 }
Simon Cooksey 0:fb7af294d5d9 199
Simon Cooksey 0:fb7af294d5d9 200 if( ( ret = mbedtls_cipher_setup( &cipher_ctx, cipher_info ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 201 goto exit;
Simon Cooksey 0:fb7af294d5d9 202
Simon Cooksey 0:fb7af294d5d9 203 if( ( ret = mbedtls_cipher_setkey( &cipher_ctx, key, 8 * keylen, (mbedtls_operation_t) mode ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 204 goto exit;
Simon Cooksey 0:fb7af294d5d9 205
Simon Cooksey 0:fb7af294d5d9 206 if( ( ret = mbedtls_cipher_crypt( &cipher_ctx, iv, enc_scheme_params.len,
Simon Cooksey 0:fb7af294d5d9 207 data, datalen, output, &olen ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 208 ret = MBEDTLS_ERR_PKCS5_PASSWORD_MISMATCH;
Simon Cooksey 0:fb7af294d5d9 209
Simon Cooksey 0:fb7af294d5d9 210 exit:
Simon Cooksey 0:fb7af294d5d9 211 mbedtls_md_free( &md_ctx );
Simon Cooksey 0:fb7af294d5d9 212 mbedtls_cipher_free( &cipher_ctx );
Simon Cooksey 0:fb7af294d5d9 213
Simon Cooksey 0:fb7af294d5d9 214 return( ret );
Simon Cooksey 0:fb7af294d5d9 215 }
Simon Cooksey 0:fb7af294d5d9 216
Simon Cooksey 0:fb7af294d5d9 217 int mbedtls_pkcs5_pbkdf2_hmac( mbedtls_md_context_t *ctx, const unsigned char *password,
Simon Cooksey 0:fb7af294d5d9 218 size_t plen, const unsigned char *salt, size_t slen,
Simon Cooksey 0:fb7af294d5d9 219 unsigned int iteration_count,
Simon Cooksey 0:fb7af294d5d9 220 uint32_t key_length, unsigned char *output )
Simon Cooksey 0:fb7af294d5d9 221 {
Simon Cooksey 0:fb7af294d5d9 222 int ret, j;
Simon Cooksey 0:fb7af294d5d9 223 unsigned int i;
Simon Cooksey 0:fb7af294d5d9 224 unsigned char md1[MBEDTLS_MD_MAX_SIZE];
Simon Cooksey 0:fb7af294d5d9 225 unsigned char work[MBEDTLS_MD_MAX_SIZE];
Simon Cooksey 0:fb7af294d5d9 226 unsigned char md_size = mbedtls_md_get_size( ctx->md_info );
Simon Cooksey 0:fb7af294d5d9 227 size_t use_len;
Simon Cooksey 0:fb7af294d5d9 228 unsigned char *out_p = output;
Simon Cooksey 0:fb7af294d5d9 229 unsigned char counter[4];
Simon Cooksey 0:fb7af294d5d9 230
Simon Cooksey 0:fb7af294d5d9 231 memset( counter, 0, 4 );
Simon Cooksey 0:fb7af294d5d9 232 counter[3] = 1;
Simon Cooksey 0:fb7af294d5d9 233
Simon Cooksey 0:fb7af294d5d9 234 if( iteration_count > 0xFFFFFFFF )
Simon Cooksey 0:fb7af294d5d9 235 return( MBEDTLS_ERR_PKCS5_BAD_INPUT_DATA );
Simon Cooksey 0:fb7af294d5d9 236
Simon Cooksey 0:fb7af294d5d9 237 while( key_length )
Simon Cooksey 0:fb7af294d5d9 238 {
Simon Cooksey 0:fb7af294d5d9 239 // U1 ends up in work
Simon Cooksey 0:fb7af294d5d9 240 //
Simon Cooksey 0:fb7af294d5d9 241 if( ( ret = mbedtls_md_hmac_starts( ctx, password, plen ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 242 return( ret );
Simon Cooksey 0:fb7af294d5d9 243
Simon Cooksey 0:fb7af294d5d9 244 if( ( ret = mbedtls_md_hmac_update( ctx, salt, slen ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 245 return( ret );
Simon Cooksey 0:fb7af294d5d9 246
Simon Cooksey 0:fb7af294d5d9 247 if( ( ret = mbedtls_md_hmac_update( ctx, counter, 4 ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 248 return( ret );
Simon Cooksey 0:fb7af294d5d9 249
Simon Cooksey 0:fb7af294d5d9 250 if( ( ret = mbedtls_md_hmac_finish( ctx, work ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 251 return( ret );
Simon Cooksey 0:fb7af294d5d9 252
Simon Cooksey 0:fb7af294d5d9 253 memcpy( md1, work, md_size );
Simon Cooksey 0:fb7af294d5d9 254
Simon Cooksey 0:fb7af294d5d9 255 for( i = 1; i < iteration_count; i++ )
Simon Cooksey 0:fb7af294d5d9 256 {
Simon Cooksey 0:fb7af294d5d9 257 // U2 ends up in md1
Simon Cooksey 0:fb7af294d5d9 258 //
Simon Cooksey 0:fb7af294d5d9 259 if( ( ret = mbedtls_md_hmac_starts( ctx, password, plen ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 260 return( ret );
Simon Cooksey 0:fb7af294d5d9 261
Simon Cooksey 0:fb7af294d5d9 262 if( ( ret = mbedtls_md_hmac_update( ctx, md1, md_size ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 263 return( ret );
Simon Cooksey 0:fb7af294d5d9 264
Simon Cooksey 0:fb7af294d5d9 265 if( ( ret = mbedtls_md_hmac_finish( ctx, md1 ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 266 return( ret );
Simon Cooksey 0:fb7af294d5d9 267
Simon Cooksey 0:fb7af294d5d9 268 // U1 xor U2
Simon Cooksey 0:fb7af294d5d9 269 //
Simon Cooksey 0:fb7af294d5d9 270 for( j = 0; j < md_size; j++ )
Simon Cooksey 0:fb7af294d5d9 271 work[j] ^= md1[j];
Simon Cooksey 0:fb7af294d5d9 272 }
Simon Cooksey 0:fb7af294d5d9 273
Simon Cooksey 0:fb7af294d5d9 274 use_len = ( key_length < md_size ) ? key_length : md_size;
Simon Cooksey 0:fb7af294d5d9 275 memcpy( out_p, work, use_len );
Simon Cooksey 0:fb7af294d5d9 276
Simon Cooksey 0:fb7af294d5d9 277 key_length -= (uint32_t) use_len;
Simon Cooksey 0:fb7af294d5d9 278 out_p += use_len;
Simon Cooksey 0:fb7af294d5d9 279
Simon Cooksey 0:fb7af294d5d9 280 for( i = 4; i > 0; i-- )
Simon Cooksey 0:fb7af294d5d9 281 if( ++counter[i - 1] != 0 )
Simon Cooksey 0:fb7af294d5d9 282 break;
Simon Cooksey 0:fb7af294d5d9 283 }
Simon Cooksey 0:fb7af294d5d9 284
Simon Cooksey 0:fb7af294d5d9 285 return( 0 );
Simon Cooksey 0:fb7af294d5d9 286 }
Simon Cooksey 0:fb7af294d5d9 287
Simon Cooksey 0:fb7af294d5d9 288 #if defined(MBEDTLS_SELF_TEST)
Simon Cooksey 0:fb7af294d5d9 289
Simon Cooksey 0:fb7af294d5d9 290 #if !defined(MBEDTLS_SHA1_C)
Simon Cooksey 0:fb7af294d5d9 291 int mbedtls_pkcs5_self_test( int verbose )
Simon Cooksey 0:fb7af294d5d9 292 {
Simon Cooksey 0:fb7af294d5d9 293 if( verbose != 0 )
Simon Cooksey 0:fb7af294d5d9 294 mbedtls_printf( " PBKDF2 (SHA1): skipped\n\n" );
Simon Cooksey 0:fb7af294d5d9 295
Simon Cooksey 0:fb7af294d5d9 296 return( 0 );
Simon Cooksey 0:fb7af294d5d9 297 }
Simon Cooksey 0:fb7af294d5d9 298 #else
Simon Cooksey 0:fb7af294d5d9 299
Simon Cooksey 0:fb7af294d5d9 300 #define MAX_TESTS 6
Simon Cooksey 0:fb7af294d5d9 301
Simon Cooksey 0:fb7af294d5d9 302 static const size_t plen[MAX_TESTS] =
Simon Cooksey 0:fb7af294d5d9 303 { 8, 8, 8, 24, 9 };
Simon Cooksey 0:fb7af294d5d9 304
Simon Cooksey 0:fb7af294d5d9 305 static const unsigned char password[MAX_TESTS][32] =
Simon Cooksey 0:fb7af294d5d9 306 {
Simon Cooksey 0:fb7af294d5d9 307 "password",
Simon Cooksey 0:fb7af294d5d9 308 "password",
Simon Cooksey 0:fb7af294d5d9 309 "password",
Simon Cooksey 0:fb7af294d5d9 310 "passwordPASSWORDpassword",
Simon Cooksey 0:fb7af294d5d9 311 "pass\0word",
Simon Cooksey 0:fb7af294d5d9 312 };
Simon Cooksey 0:fb7af294d5d9 313
Simon Cooksey 0:fb7af294d5d9 314 static const size_t slen[MAX_TESTS] =
Simon Cooksey 0:fb7af294d5d9 315 { 4, 4, 4, 36, 5 };
Simon Cooksey 0:fb7af294d5d9 316
Simon Cooksey 0:fb7af294d5d9 317 static const unsigned char salt[MAX_TESTS][40] =
Simon Cooksey 0:fb7af294d5d9 318 {
Simon Cooksey 0:fb7af294d5d9 319 "salt",
Simon Cooksey 0:fb7af294d5d9 320 "salt",
Simon Cooksey 0:fb7af294d5d9 321 "salt",
Simon Cooksey 0:fb7af294d5d9 322 "saltSALTsaltSALTsaltSALTsaltSALTsalt",
Simon Cooksey 0:fb7af294d5d9 323 "sa\0lt",
Simon Cooksey 0:fb7af294d5d9 324 };
Simon Cooksey 0:fb7af294d5d9 325
Simon Cooksey 0:fb7af294d5d9 326 static const uint32_t it_cnt[MAX_TESTS] =
Simon Cooksey 0:fb7af294d5d9 327 { 1, 2, 4096, 4096, 4096 };
Simon Cooksey 0:fb7af294d5d9 328
Simon Cooksey 0:fb7af294d5d9 329 static const uint32_t key_len[MAX_TESTS] =
Simon Cooksey 0:fb7af294d5d9 330 { 20, 20, 20, 25, 16 };
Simon Cooksey 0:fb7af294d5d9 331
Simon Cooksey 0:fb7af294d5d9 332 static const unsigned char result_key[MAX_TESTS][32] =
Simon Cooksey 0:fb7af294d5d9 333 {
Simon Cooksey 0:fb7af294d5d9 334 { 0x0c, 0x60, 0xc8, 0x0f, 0x96, 0x1f, 0x0e, 0x71,
Simon Cooksey 0:fb7af294d5d9 335 0xf3, 0xa9, 0xb5, 0x24, 0xaf, 0x60, 0x12, 0x06,
Simon Cooksey 0:fb7af294d5d9 336 0x2f, 0xe0, 0x37, 0xa6 },
Simon Cooksey 0:fb7af294d5d9 337 { 0xea, 0x6c, 0x01, 0x4d, 0xc7, 0x2d, 0x6f, 0x8c,
Simon Cooksey 0:fb7af294d5d9 338 0xcd, 0x1e, 0xd9, 0x2a, 0xce, 0x1d, 0x41, 0xf0,
Simon Cooksey 0:fb7af294d5d9 339 0xd8, 0xde, 0x89, 0x57 },
Simon Cooksey 0:fb7af294d5d9 340 { 0x4b, 0x00, 0x79, 0x01, 0xb7, 0x65, 0x48, 0x9a,
Simon Cooksey 0:fb7af294d5d9 341 0xbe, 0xad, 0x49, 0xd9, 0x26, 0xf7, 0x21, 0xd0,
Simon Cooksey 0:fb7af294d5d9 342 0x65, 0xa4, 0x29, 0xc1 },
Simon Cooksey 0:fb7af294d5d9 343 { 0x3d, 0x2e, 0xec, 0x4f, 0xe4, 0x1c, 0x84, 0x9b,
Simon Cooksey 0:fb7af294d5d9 344 0x80, 0xc8, 0xd8, 0x36, 0x62, 0xc0, 0xe4, 0x4a,
Simon Cooksey 0:fb7af294d5d9 345 0x8b, 0x29, 0x1a, 0x96, 0x4c, 0xf2, 0xf0, 0x70,
Simon Cooksey 0:fb7af294d5d9 346 0x38 },
Simon Cooksey 0:fb7af294d5d9 347 { 0x56, 0xfa, 0x6a, 0xa7, 0x55, 0x48, 0x09, 0x9d,
Simon Cooksey 0:fb7af294d5d9 348 0xcc, 0x37, 0xd7, 0xf0, 0x34, 0x25, 0xe0, 0xc3 },
Simon Cooksey 0:fb7af294d5d9 349 };
Simon Cooksey 0:fb7af294d5d9 350
Simon Cooksey 0:fb7af294d5d9 351 int mbedtls_pkcs5_self_test( int verbose )
Simon Cooksey 0:fb7af294d5d9 352 {
Simon Cooksey 0:fb7af294d5d9 353 mbedtls_md_context_t sha1_ctx;
Simon Cooksey 0:fb7af294d5d9 354 const mbedtls_md_info_t *info_sha1;
Simon Cooksey 0:fb7af294d5d9 355 int ret, i;
Simon Cooksey 0:fb7af294d5d9 356 unsigned char key[64];
Simon Cooksey 0:fb7af294d5d9 357
Simon Cooksey 0:fb7af294d5d9 358 mbedtls_md_init( &sha1_ctx );
Simon Cooksey 0:fb7af294d5d9 359
Simon Cooksey 0:fb7af294d5d9 360 info_sha1 = mbedtls_md_info_from_type( MBEDTLS_MD_SHA1 );
Simon Cooksey 0:fb7af294d5d9 361 if( info_sha1 == NULL )
Simon Cooksey 0:fb7af294d5d9 362 {
Simon Cooksey 0:fb7af294d5d9 363 ret = 1;
Simon Cooksey 0:fb7af294d5d9 364 goto exit;
Simon Cooksey 0:fb7af294d5d9 365 }
Simon Cooksey 0:fb7af294d5d9 366
Simon Cooksey 0:fb7af294d5d9 367 if( ( ret = mbedtls_md_setup( &sha1_ctx, info_sha1, 1 ) ) != 0 )
Simon Cooksey 0:fb7af294d5d9 368 {
Simon Cooksey 0:fb7af294d5d9 369 ret = 1;
Simon Cooksey 0:fb7af294d5d9 370 goto exit;
Simon Cooksey 0:fb7af294d5d9 371 }
Simon Cooksey 0:fb7af294d5d9 372
Simon Cooksey 0:fb7af294d5d9 373 for( i = 0; i < MAX_TESTS; i++ )
Simon Cooksey 0:fb7af294d5d9 374 {
Simon Cooksey 0:fb7af294d5d9 375 if( verbose != 0 )
Simon Cooksey 0:fb7af294d5d9 376 mbedtls_printf( " PBKDF2 (SHA1) #%d: ", i );
Simon Cooksey 0:fb7af294d5d9 377
Simon Cooksey 0:fb7af294d5d9 378 ret = mbedtls_pkcs5_pbkdf2_hmac( &sha1_ctx, password[i], plen[i], salt[i],
Simon Cooksey 0:fb7af294d5d9 379 slen[i], it_cnt[i], key_len[i], key );
Simon Cooksey 0:fb7af294d5d9 380 if( ret != 0 ||
Simon Cooksey 0:fb7af294d5d9 381 memcmp( result_key[i], key, key_len[i] ) != 0 )
Simon Cooksey 0:fb7af294d5d9 382 {
Simon Cooksey 0:fb7af294d5d9 383 if( verbose != 0 )
Simon Cooksey 0:fb7af294d5d9 384 mbedtls_printf( "failed\n" );
Simon Cooksey 0:fb7af294d5d9 385
Simon Cooksey 0:fb7af294d5d9 386 ret = 1;
Simon Cooksey 0:fb7af294d5d9 387 goto exit;
Simon Cooksey 0:fb7af294d5d9 388 }
Simon Cooksey 0:fb7af294d5d9 389
Simon Cooksey 0:fb7af294d5d9 390 if( verbose != 0 )
Simon Cooksey 0:fb7af294d5d9 391 mbedtls_printf( "passed\n" );
Simon Cooksey 0:fb7af294d5d9 392 }
Simon Cooksey 0:fb7af294d5d9 393
Simon Cooksey 0:fb7af294d5d9 394 if( verbose != 0 )
Simon Cooksey 0:fb7af294d5d9 395 mbedtls_printf( "\n" );
Simon Cooksey 0:fb7af294d5d9 396
Simon Cooksey 0:fb7af294d5d9 397 exit:
Simon Cooksey 0:fb7af294d5d9 398 mbedtls_md_free( &sha1_ctx );
Simon Cooksey 0:fb7af294d5d9 399
Simon Cooksey 0:fb7af294d5d9 400 return( ret );
Simon Cooksey 0:fb7af294d5d9 401 }
Simon Cooksey 0:fb7af294d5d9 402 #endif /* MBEDTLS_SHA1_C */
Simon Cooksey 0:fb7af294d5d9 403
Simon Cooksey 0:fb7af294d5d9 404 #endif /* MBEDTLS_SELF_TEST */
Simon Cooksey 0:fb7af294d5d9 405
Simon Cooksey 0:fb7af294d5d9 406 #endif /* MBEDTLS_PKCS5_C */