Arcola / mbedtls

mbed TLS upgraded to 2.6.0

Fork of mbedtls by Mark Radbourne

library/pk.c@1:9ebc941037d5, 2017-09-29 (annotated)

Committer:
Jasper Wallace
Date:
Fri Sep 29 18:41:59 2017 +0100
Revision:
1:9ebc941037d5
Parent:
0:cdf462088d13 
Update to mbedtls 2.4.2, security fixes



Changes to mbedtls sources made:



in include/mbedtls/config.h comment out:



#define MBEDTLS_FS_IO

#define MBEDTLS_NET_C

#define MBEDTLS_TIMING_C



uncomment:



#define MBEDTLS_NO_PLATFORM_ENTROPY

Who changed what in which revision?

UserRevisionLine numberNew contents of line
markrad 0:cdf462088d13 1 /*
markrad 0:cdf462088d13 2 * Public Key abstraction layer
markrad 0:cdf462088d13 3 *
markrad 0:cdf462088d13 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
markrad 0:cdf462088d13 5 * SPDX-License-Identifier: Apache-2.0
markrad 0:cdf462088d13 6 *
markrad 0:cdf462088d13 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
markrad 0:cdf462088d13 8 * not use this file except in compliance with the License.
markrad 0:cdf462088d13 9 * You may obtain a copy of the License at
markrad 0:cdf462088d13 10 *
markrad 0:cdf462088d13 11 * http://www.apache.org/licenses/LICENSE-2.0
markrad 0:cdf462088d13 12 *
markrad 0:cdf462088d13 13 * Unless required by applicable law or agreed to in writing, software
markrad 0:cdf462088d13 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
markrad 0:cdf462088d13 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
markrad 0:cdf462088d13 16 * See the License for the specific language governing permissions and
markrad 0:cdf462088d13 17 * limitations under the License.
markrad 0:cdf462088d13 18 *
markrad 0:cdf462088d13 19 * This file is part of mbed TLS (https://tls.mbed.org)
markrad 0:cdf462088d13 20 */
markrad 0:cdf462088d13 21
markrad 0:cdf462088d13 22 #if !defined(MBEDTLS_CONFIG_FILE)
markrad 0:cdf462088d13 23 #include "mbedtls/config.h"
markrad 0:cdf462088d13 24 #else
markrad 0:cdf462088d13 25 #include MBEDTLS_CONFIG_FILE
markrad 0:cdf462088d13 26 #endif
markrad 0:cdf462088d13 27
markrad 0:cdf462088d13 28 #if defined(MBEDTLS_PK_C)
markrad 0:cdf462088d13 29 #include "mbedtls/pk.h"
markrad 0:cdf462088d13 30 #include "mbedtls/pk_internal.h"
markrad 0:cdf462088d13 31
Jasper Wallace 1:9ebc941037d5 32 #include "mbedtls/bignum.h"
Jasper Wallace 1:9ebc941037d5 33
markrad 0:cdf462088d13 34 #if defined(MBEDTLS_RSA_C)
markrad 0:cdf462088d13 35 #include "mbedtls/rsa.h"
markrad 0:cdf462088d13 36 #endif
markrad 0:cdf462088d13 37 #if defined(MBEDTLS_ECP_C)
markrad 0:cdf462088d13 38 #include "mbedtls/ecp.h"
markrad 0:cdf462088d13 39 #endif
markrad 0:cdf462088d13 40 #if defined(MBEDTLS_ECDSA_C)
markrad 0:cdf462088d13 41 #include "mbedtls/ecdsa.h"
markrad 0:cdf462088d13 42 #endif
markrad 0:cdf462088d13 43
Jasper Wallace 1:9ebc941037d5 44 #include <limits.h>
Jasper Wallace 1:9ebc941037d5 45
markrad 0:cdf462088d13 46 /* Implementation that should never be optimized out by the compiler */
markrad 0:cdf462088d13 47 static void mbedtls_zeroize( void *v, size_t n ) {
markrad 0:cdf462088d13 48 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
markrad 0:cdf462088d13 49 }
markrad 0:cdf462088d13 50
markrad 0:cdf462088d13 51 /*
markrad 0:cdf462088d13 52 * Initialise a mbedtls_pk_context
markrad 0:cdf462088d13 53 */
markrad 0:cdf462088d13 54 void mbedtls_pk_init( mbedtls_pk_context *ctx )
markrad 0:cdf462088d13 55 {
markrad 0:cdf462088d13 56 if( ctx == NULL )
markrad 0:cdf462088d13 57 return;
markrad 0:cdf462088d13 58
markrad 0:cdf462088d13 59 ctx->pk_info = NULL;
markrad 0:cdf462088d13 60 ctx->pk_ctx = NULL;
markrad 0:cdf462088d13 61 }
markrad 0:cdf462088d13 62
markrad 0:cdf462088d13 63 /*
markrad 0:cdf462088d13 64 * Free (the components of) a mbedtls_pk_context
markrad 0:cdf462088d13 65 */
markrad 0:cdf462088d13 66 void mbedtls_pk_free( mbedtls_pk_context *ctx )
markrad 0:cdf462088d13 67 {
markrad 0:cdf462088d13 68 if( ctx == NULL || ctx->pk_info == NULL )
markrad 0:cdf462088d13 69 return;
markrad 0:cdf462088d13 70
markrad 0:cdf462088d13 71 ctx->pk_info->ctx_free_func( ctx->pk_ctx );
markrad 0:cdf462088d13 72
markrad 0:cdf462088d13 73 mbedtls_zeroize( ctx, sizeof( mbedtls_pk_context ) );
markrad 0:cdf462088d13 74 }
markrad 0:cdf462088d13 75
markrad 0:cdf462088d13 76 /*
markrad 0:cdf462088d13 77 * Get pk_info structure from type
markrad 0:cdf462088d13 78 */
markrad 0:cdf462088d13 79 const mbedtls_pk_info_t * mbedtls_pk_info_from_type( mbedtls_pk_type_t pk_type )
markrad 0:cdf462088d13 80 {
markrad 0:cdf462088d13 81 switch( pk_type ) {
markrad 0:cdf462088d13 82 #if defined(MBEDTLS_RSA_C)
markrad 0:cdf462088d13 83 case MBEDTLS_PK_RSA:
markrad 0:cdf462088d13 84 return( &mbedtls_rsa_info );
markrad 0:cdf462088d13 85 #endif
markrad 0:cdf462088d13 86 #if defined(MBEDTLS_ECP_C)
markrad 0:cdf462088d13 87 case MBEDTLS_PK_ECKEY:
markrad 0:cdf462088d13 88 return( &mbedtls_eckey_info );
markrad 0:cdf462088d13 89 case MBEDTLS_PK_ECKEY_DH:
markrad 0:cdf462088d13 90 return( &mbedtls_eckeydh_info );
markrad 0:cdf462088d13 91 #endif
markrad 0:cdf462088d13 92 #if defined(MBEDTLS_ECDSA_C)
markrad 0:cdf462088d13 93 case MBEDTLS_PK_ECDSA:
markrad 0:cdf462088d13 94 return( &mbedtls_ecdsa_info );
markrad 0:cdf462088d13 95 #endif
markrad 0:cdf462088d13 96 /* MBEDTLS_PK_RSA_ALT omitted on purpose */
markrad 0:cdf462088d13 97 default:
markrad 0:cdf462088d13 98 return( NULL );
markrad 0:cdf462088d13 99 }
markrad 0:cdf462088d13 100 }
markrad 0:cdf462088d13 101
markrad 0:cdf462088d13 102 /*
markrad 0:cdf462088d13 103 * Initialise context
markrad 0:cdf462088d13 104 */
markrad 0:cdf462088d13 105 int mbedtls_pk_setup( mbedtls_pk_context *ctx, const mbedtls_pk_info_t *info )
markrad 0:cdf462088d13 106 {
markrad 0:cdf462088d13 107 if( ctx == NULL || info == NULL || ctx->pk_info != NULL )
markrad 0:cdf462088d13 108 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 109
markrad 0:cdf462088d13 110 if( ( ctx->pk_ctx = info->ctx_alloc_func() ) == NULL )
markrad 0:cdf462088d13 111 return( MBEDTLS_ERR_PK_ALLOC_FAILED );
markrad 0:cdf462088d13 112
markrad 0:cdf462088d13 113 ctx->pk_info = info;
markrad 0:cdf462088d13 114
markrad 0:cdf462088d13 115 return( 0 );
markrad 0:cdf462088d13 116 }
markrad 0:cdf462088d13 117
markrad 0:cdf462088d13 118 #if defined(MBEDTLS_PK_RSA_ALT_SUPPORT)
markrad 0:cdf462088d13 119 /*
markrad 0:cdf462088d13 120 * Initialize an RSA-alt context
markrad 0:cdf462088d13 121 */
markrad 0:cdf462088d13 122 int mbedtls_pk_setup_rsa_alt( mbedtls_pk_context *ctx, void * key,
markrad 0:cdf462088d13 123 mbedtls_pk_rsa_alt_decrypt_func decrypt_func,
markrad 0:cdf462088d13 124 mbedtls_pk_rsa_alt_sign_func sign_func,
markrad 0:cdf462088d13 125 mbedtls_pk_rsa_alt_key_len_func key_len_func )
markrad 0:cdf462088d13 126 {
markrad 0:cdf462088d13 127 mbedtls_rsa_alt_context *rsa_alt;
markrad 0:cdf462088d13 128 const mbedtls_pk_info_t *info = &mbedtls_rsa_alt_info;
markrad 0:cdf462088d13 129
markrad 0:cdf462088d13 130 if( ctx == NULL || ctx->pk_info != NULL )
markrad 0:cdf462088d13 131 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 132
markrad 0:cdf462088d13 133 if( ( ctx->pk_ctx = info->ctx_alloc_func() ) == NULL )
markrad 0:cdf462088d13 134 return( MBEDTLS_ERR_PK_ALLOC_FAILED );
markrad 0:cdf462088d13 135
markrad 0:cdf462088d13 136 ctx->pk_info = info;
markrad 0:cdf462088d13 137
markrad 0:cdf462088d13 138 rsa_alt = (mbedtls_rsa_alt_context *) ctx->pk_ctx;
markrad 0:cdf462088d13 139
markrad 0:cdf462088d13 140 rsa_alt->key = key;
markrad 0:cdf462088d13 141 rsa_alt->decrypt_func = decrypt_func;
markrad 0:cdf462088d13 142 rsa_alt->sign_func = sign_func;
markrad 0:cdf462088d13 143 rsa_alt->key_len_func = key_len_func;
markrad 0:cdf462088d13 144
markrad 0:cdf462088d13 145 return( 0 );
markrad 0:cdf462088d13 146 }
markrad 0:cdf462088d13 147 #endif /* MBEDTLS_PK_RSA_ALT_SUPPORT */
markrad 0:cdf462088d13 148
markrad 0:cdf462088d13 149 /*
markrad 0:cdf462088d13 150 * Tell if a PK can do the operations of the given type
markrad 0:cdf462088d13 151 */
markrad 0:cdf462088d13 152 int mbedtls_pk_can_do( const mbedtls_pk_context *ctx, mbedtls_pk_type_t type )
markrad 0:cdf462088d13 153 {
markrad 0:cdf462088d13 154 /* null or NONE context can't do anything */
markrad 0:cdf462088d13 155 if( ctx == NULL || ctx->pk_info == NULL )
markrad 0:cdf462088d13 156 return( 0 );
markrad 0:cdf462088d13 157
markrad 0:cdf462088d13 158 return( ctx->pk_info->can_do( type ) );
markrad 0:cdf462088d13 159 }
markrad 0:cdf462088d13 160
markrad 0:cdf462088d13 161 /*
markrad 0:cdf462088d13 162 * Helper for mbedtls_pk_sign and mbedtls_pk_verify
markrad 0:cdf462088d13 163 */
markrad 0:cdf462088d13 164 static inline int pk_hashlen_helper( mbedtls_md_type_t md_alg, size_t *hash_len )
markrad 0:cdf462088d13 165 {
markrad 0:cdf462088d13 166 const mbedtls_md_info_t *md_info;
markrad 0:cdf462088d13 167
markrad 0:cdf462088d13 168 if( *hash_len != 0 )
markrad 0:cdf462088d13 169 return( 0 );
markrad 0:cdf462088d13 170
markrad 0:cdf462088d13 171 if( ( md_info = mbedtls_md_info_from_type( md_alg ) ) == NULL )
markrad 0:cdf462088d13 172 return( -1 );
markrad 0:cdf462088d13 173
markrad 0:cdf462088d13 174 *hash_len = mbedtls_md_get_size( md_info );
markrad 0:cdf462088d13 175 return( 0 );
markrad 0:cdf462088d13 176 }
markrad 0:cdf462088d13 177
markrad 0:cdf462088d13 178 /*
markrad 0:cdf462088d13 179 * Verify a signature
markrad 0:cdf462088d13 180 */
markrad 0:cdf462088d13 181 int mbedtls_pk_verify( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
markrad 0:cdf462088d13 182 const unsigned char *hash, size_t hash_len,
markrad 0:cdf462088d13 183 const unsigned char *sig, size_t sig_len )
markrad 0:cdf462088d13 184 {
markrad 0:cdf462088d13 185 if( ctx == NULL || ctx->pk_info == NULL ||
markrad 0:cdf462088d13 186 pk_hashlen_helper( md_alg, &hash_len ) != 0 )
markrad 0:cdf462088d13 187 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 188
markrad 0:cdf462088d13 189 if( ctx->pk_info->verify_func == NULL )
markrad 0:cdf462088d13 190 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
markrad 0:cdf462088d13 191
markrad 0:cdf462088d13 192 return( ctx->pk_info->verify_func( ctx->pk_ctx, md_alg, hash, hash_len,
markrad 0:cdf462088d13 193 sig, sig_len ) );
markrad 0:cdf462088d13 194 }
markrad 0:cdf462088d13 195
markrad 0:cdf462088d13 196 /*
markrad 0:cdf462088d13 197 * Verify a signature with options
markrad 0:cdf462088d13 198 */
markrad 0:cdf462088d13 199 int mbedtls_pk_verify_ext( mbedtls_pk_type_t type, const void *options,
markrad 0:cdf462088d13 200 mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
markrad 0:cdf462088d13 201 const unsigned char *hash, size_t hash_len,
markrad 0:cdf462088d13 202 const unsigned char *sig, size_t sig_len )
markrad 0:cdf462088d13 203 {
markrad 0:cdf462088d13 204 if( ctx == NULL || ctx->pk_info == NULL )
markrad 0:cdf462088d13 205 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 206
markrad 0:cdf462088d13 207 if( ! mbedtls_pk_can_do( ctx, type ) )
markrad 0:cdf462088d13 208 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
markrad 0:cdf462088d13 209
markrad 0:cdf462088d13 210 if( type == MBEDTLS_PK_RSASSA_PSS )
markrad 0:cdf462088d13 211 {
markrad 0:cdf462088d13 212 #if defined(MBEDTLS_RSA_C) && defined(MBEDTLS_PKCS1_V21)
markrad 0:cdf462088d13 213 int ret;
markrad 0:cdf462088d13 214 const mbedtls_pk_rsassa_pss_options *pss_opts;
markrad 0:cdf462088d13 215
Jasper Wallace 1:9ebc941037d5 216 #if defined(MBEDTLS_HAVE_INT64)
Jasper Wallace 1:9ebc941037d5 217 if( md_alg == MBEDTLS_MD_NONE && UINT_MAX < hash_len )
Jasper Wallace 1:9ebc941037d5 218 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
Jasper Wallace 1:9ebc941037d5 219 #endif /* MBEDTLS_HAVE_INT64 */
Jasper Wallace 1:9ebc941037d5 220
markrad 0:cdf462088d13 221 if( options == NULL )
markrad 0:cdf462088d13 222 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 223
markrad 0:cdf462088d13 224 pss_opts = (const mbedtls_pk_rsassa_pss_options *) options;
markrad 0:cdf462088d13 225
markrad 0:cdf462088d13 226 if( sig_len < mbedtls_pk_get_len( ctx ) )
markrad 0:cdf462088d13 227 return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
markrad 0:cdf462088d13 228
markrad 0:cdf462088d13 229 ret = mbedtls_rsa_rsassa_pss_verify_ext( mbedtls_pk_rsa( *ctx ),
markrad 0:cdf462088d13 230 NULL, NULL, MBEDTLS_RSA_PUBLIC,
markrad 0:cdf462088d13 231 md_alg, (unsigned int) hash_len, hash,
markrad 0:cdf462088d13 232 pss_opts->mgf1_hash_id,
markrad 0:cdf462088d13 233 pss_opts->expected_salt_len,
markrad 0:cdf462088d13 234 sig );
markrad 0:cdf462088d13 235 if( ret != 0 )
markrad 0:cdf462088d13 236 return( ret );
markrad 0:cdf462088d13 237
markrad 0:cdf462088d13 238 if( sig_len > mbedtls_pk_get_len( ctx ) )
markrad 0:cdf462088d13 239 return( MBEDTLS_ERR_PK_SIG_LEN_MISMATCH );
markrad 0:cdf462088d13 240
markrad 0:cdf462088d13 241 return( 0 );
markrad 0:cdf462088d13 242 #else
markrad 0:cdf462088d13 243 return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
Jasper Wallace 1:9ebc941037d5 244 #endif /* MBEDTLS_RSA_C && MBEDTLS_PKCS1_V21 */
markrad 0:cdf462088d13 245 }
markrad 0:cdf462088d13 246
markrad 0:cdf462088d13 247 /* General case: no options */
markrad 0:cdf462088d13 248 if( options != NULL )
markrad 0:cdf462088d13 249 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 250
markrad 0:cdf462088d13 251 return( mbedtls_pk_verify( ctx, md_alg, hash, hash_len, sig, sig_len ) );
markrad 0:cdf462088d13 252 }
markrad 0:cdf462088d13 253
markrad 0:cdf462088d13 254 /*
markrad 0:cdf462088d13 255 * Make a signature
markrad 0:cdf462088d13 256 */
markrad 0:cdf462088d13 257 int mbedtls_pk_sign( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
markrad 0:cdf462088d13 258 const unsigned char *hash, size_t hash_len,
markrad 0:cdf462088d13 259 unsigned char *sig, size_t *sig_len,
markrad 0:cdf462088d13 260 int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
markrad 0:cdf462088d13 261 {
markrad 0:cdf462088d13 262 if( ctx == NULL || ctx->pk_info == NULL ||
markrad 0:cdf462088d13 263 pk_hashlen_helper( md_alg, &hash_len ) != 0 )
markrad 0:cdf462088d13 264 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 265
markrad 0:cdf462088d13 266 if( ctx->pk_info->sign_func == NULL )
markrad 0:cdf462088d13 267 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
markrad 0:cdf462088d13 268
markrad 0:cdf462088d13 269 return( ctx->pk_info->sign_func( ctx->pk_ctx, md_alg, hash, hash_len,
markrad 0:cdf462088d13 270 sig, sig_len, f_rng, p_rng ) );
markrad 0:cdf462088d13 271 }
markrad 0:cdf462088d13 272
markrad 0:cdf462088d13 273 /*
markrad 0:cdf462088d13 274 * Decrypt message
markrad 0:cdf462088d13 275 */
markrad 0:cdf462088d13 276 int mbedtls_pk_decrypt( mbedtls_pk_context *ctx,
markrad 0:cdf462088d13 277 const unsigned char *input, size_t ilen,
markrad 0:cdf462088d13 278 unsigned char *output, size_t *olen, size_t osize,
markrad 0:cdf462088d13 279 int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
markrad 0:cdf462088d13 280 {
markrad 0:cdf462088d13 281 if( ctx == NULL || ctx->pk_info == NULL )
markrad 0:cdf462088d13 282 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 283
markrad 0:cdf462088d13 284 if( ctx->pk_info->decrypt_func == NULL )
markrad 0:cdf462088d13 285 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
markrad 0:cdf462088d13 286
markrad 0:cdf462088d13 287 return( ctx->pk_info->decrypt_func( ctx->pk_ctx, input, ilen,
markrad 0:cdf462088d13 288 output, olen, osize, f_rng, p_rng ) );
markrad 0:cdf462088d13 289 }
markrad 0:cdf462088d13 290
markrad 0:cdf462088d13 291 /*
markrad 0:cdf462088d13 292 * Encrypt message
markrad 0:cdf462088d13 293 */
markrad 0:cdf462088d13 294 int mbedtls_pk_encrypt( mbedtls_pk_context *ctx,
markrad 0:cdf462088d13 295 const unsigned char *input, size_t ilen,
markrad 0:cdf462088d13 296 unsigned char *output, size_t *olen, size_t osize,
markrad 0:cdf462088d13 297 int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
markrad 0:cdf462088d13 298 {
markrad 0:cdf462088d13 299 if( ctx == NULL || ctx->pk_info == NULL )
markrad 0:cdf462088d13 300 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 301
markrad 0:cdf462088d13 302 if( ctx->pk_info->encrypt_func == NULL )
markrad 0:cdf462088d13 303 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
markrad 0:cdf462088d13 304
markrad 0:cdf462088d13 305 return( ctx->pk_info->encrypt_func( ctx->pk_ctx, input, ilen,
markrad 0:cdf462088d13 306 output, olen, osize, f_rng, p_rng ) );
markrad 0:cdf462088d13 307 }
markrad 0:cdf462088d13 308
markrad 0:cdf462088d13 309 /*
markrad 0:cdf462088d13 310 * Check public-private key pair
markrad 0:cdf462088d13 311 */
markrad 0:cdf462088d13 312 int mbedtls_pk_check_pair( const mbedtls_pk_context *pub, const mbedtls_pk_context *prv )
markrad 0:cdf462088d13 313 {
markrad 0:cdf462088d13 314 if( pub == NULL || pub->pk_info == NULL ||
markrad 0:cdf462088d13 315 prv == NULL || prv->pk_info == NULL ||
markrad 0:cdf462088d13 316 prv->pk_info->check_pair_func == NULL )
markrad 0:cdf462088d13 317 {
markrad 0:cdf462088d13 318 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 319 }
markrad 0:cdf462088d13 320
markrad 0:cdf462088d13 321 if( prv->pk_info->type == MBEDTLS_PK_RSA_ALT )
markrad 0:cdf462088d13 322 {
markrad 0:cdf462088d13 323 if( pub->pk_info->type != MBEDTLS_PK_RSA )
markrad 0:cdf462088d13 324 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
markrad 0:cdf462088d13 325 }
markrad 0:cdf462088d13 326 else
markrad 0:cdf462088d13 327 {
markrad 0:cdf462088d13 328 if( pub->pk_info != prv->pk_info )
markrad 0:cdf462088d13 329 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
markrad 0:cdf462088d13 330 }
markrad 0:cdf462088d13 331
markrad 0:cdf462088d13 332 return( prv->pk_info->check_pair_func( pub->pk_ctx, prv->pk_ctx ) );
markrad 0:cdf462088d13 333 }
markrad 0:cdf462088d13 334
markrad 0:cdf462088d13 335 /*
markrad 0:cdf462088d13 336 * Get key size in bits
markrad 0:cdf462088d13 337 */
markrad 0:cdf462088d13 338 size_t mbedtls_pk_get_bitlen( const mbedtls_pk_context *ctx )
markrad 0:cdf462088d13 339 {
markrad 0:cdf462088d13 340 if( ctx == NULL || ctx->pk_info == NULL )
markrad 0:cdf462088d13 341 return( 0 );
markrad 0:cdf462088d13 342
markrad 0:cdf462088d13 343 return( ctx->pk_info->get_bitlen( ctx->pk_ctx ) );
markrad 0:cdf462088d13 344 }
markrad 0:cdf462088d13 345
markrad 0:cdf462088d13 346 /*
markrad 0:cdf462088d13 347 * Export debug information
markrad 0:cdf462088d13 348 */
markrad 0:cdf462088d13 349 int mbedtls_pk_debug( const mbedtls_pk_context *ctx, mbedtls_pk_debug_item *items )
markrad 0:cdf462088d13 350 {
markrad 0:cdf462088d13 351 if( ctx == NULL || ctx->pk_info == NULL )
markrad 0:cdf462088d13 352 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
markrad 0:cdf462088d13 353
markrad 0:cdf462088d13 354 if( ctx->pk_info->debug_func == NULL )
markrad 0:cdf462088d13 355 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
markrad 0:cdf462088d13 356
markrad 0:cdf462088d13 357 ctx->pk_info->debug_func( ctx->pk_ctx, items );
markrad 0:cdf462088d13 358 return( 0 );
markrad 0:cdf462088d13 359 }
markrad 0:cdf462088d13 360
markrad 0:cdf462088d13 361 /*
markrad 0:cdf462088d13 362 * Access the PK type name
markrad 0:cdf462088d13 363 */
markrad 0:cdf462088d13 364 const char *mbedtls_pk_get_name( const mbedtls_pk_context *ctx )
markrad 0:cdf462088d13 365 {
markrad 0:cdf462088d13 366 if( ctx == NULL || ctx->pk_info == NULL )
markrad 0:cdf462088d13 367 return( "invalid PK" );
markrad 0:cdf462088d13 368
markrad 0:cdf462088d13 369 return( ctx->pk_info->name );
markrad 0:cdf462088d13 370 }
markrad 0:cdf462088d13 371
markrad 0:cdf462088d13 372 /*
markrad 0:cdf462088d13 373 * Access the PK type
markrad 0:cdf462088d13 374 */
markrad 0:cdf462088d13 375 mbedtls_pk_type_t mbedtls_pk_get_type( const mbedtls_pk_context *ctx )
markrad 0:cdf462088d13 376 {
markrad 0:cdf462088d13 377 if( ctx == NULL || ctx->pk_info == NULL )
markrad 0:cdf462088d13 378 return( MBEDTLS_PK_NONE );
markrad 0:cdf462088d13 379
markrad 0:cdf462088d13 380 return( ctx->pk_info->type );
markrad 0:cdf462088d13 381 }
markrad 0:cdf462088d13 382
markrad 0:cdf462088d13 383 #endif /* MBEDTLS_PK_C */