Nitin Shukla / LED_Demo

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Dependencies:   MAX44000 nexpaq_mdk

Fork of LED_Demo by Maxim nexpaq

mbd_os/features/mbedtls/src/pk.c@7:3a65ef12ba31, 2016-11-04 (annotated)

Committer:
nitsshukla
Date:
Fri Nov 04 12:06:04 2016 +0000
Revision:
7:3a65ef12ba31
Parent:
1:55a6170b404f 
kghj;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nexpaq 1:55a6170b404f 1 /*
nexpaq 1:55a6170b404f 2 * Public Key abstraction layer
nexpaq 1:55a6170b404f 3 *
nexpaq 1:55a6170b404f 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
nexpaq 1:55a6170b404f 5 * SPDX-License-Identifier: Apache-2.0
nexpaq 1:55a6170b404f 6 *
nexpaq 1:55a6170b404f 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
nexpaq 1:55a6170b404f 8 * not use this file except in compliance with the License.
nexpaq 1:55a6170b404f 9 * You may obtain a copy of the License at
nexpaq 1:55a6170b404f 10 *
nexpaq 1:55a6170b404f 11 * http://www.apache.org/licenses/LICENSE-2.0
nexpaq 1:55a6170b404f 12 *
nexpaq 1:55a6170b404f 13 * Unless required by applicable law or agreed to in writing, software
nexpaq 1:55a6170b404f 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
nexpaq 1:55a6170b404f 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
nexpaq 1:55a6170b404f 16 * See the License for the specific language governing permissions and
nexpaq 1:55a6170b404f 17 * limitations under the License.
nexpaq 1:55a6170b404f 18 *
nexpaq 1:55a6170b404f 19 * This file is part of mbed TLS (https://tls.mbed.org)
nexpaq 1:55a6170b404f 20 */
nexpaq 1:55a6170b404f 21
nexpaq 1:55a6170b404f 22 #if !defined(MBEDTLS_CONFIG_FILE)
nexpaq 1:55a6170b404f 23 #include "mbedtls/config.h"
nexpaq 1:55a6170b404f 24 #else
nexpaq 1:55a6170b404f 25 #include MBEDTLS_CONFIG_FILE
nexpaq 1:55a6170b404f 26 #endif
nexpaq 1:55a6170b404f 27
nexpaq 1:55a6170b404f 28 #if defined(MBEDTLS_PK_C)
nexpaq 1:55a6170b404f 29 #include "mbedtls/pk.h"
nexpaq 1:55a6170b404f 30 #include "mbedtls/pk_internal.h"
nexpaq 1:55a6170b404f 31
nexpaq 1:55a6170b404f 32 #if defined(MBEDTLS_RSA_C)
nexpaq 1:55a6170b404f 33 #include "mbedtls/rsa.h"
nexpaq 1:55a6170b404f 34 #endif
nexpaq 1:55a6170b404f 35 #if defined(MBEDTLS_ECP_C)
nexpaq 1:55a6170b404f 36 #include "mbedtls/ecp.h"
nexpaq 1:55a6170b404f 37 #endif
nexpaq 1:55a6170b404f 38 #if defined(MBEDTLS_ECDSA_C)
nexpaq 1:55a6170b404f 39 #include "mbedtls/ecdsa.h"
nexpaq 1:55a6170b404f 40 #endif
nexpaq 1:55a6170b404f 41
nexpaq 1:55a6170b404f 42 /* Implementation that should never be optimized out by the compiler */
nexpaq 1:55a6170b404f 43 static void mbedtls_zeroize( void *v, size_t n ) {
nexpaq 1:55a6170b404f 44 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
nexpaq 1:55a6170b404f 45 }
nexpaq 1:55a6170b404f 46
nexpaq 1:55a6170b404f 47 /*
nexpaq 1:55a6170b404f 48 * Initialise a mbedtls_pk_context
nexpaq 1:55a6170b404f 49 */
nexpaq 1:55a6170b404f 50 void mbedtls_pk_init( mbedtls_pk_context *ctx )
nexpaq 1:55a6170b404f 51 {
nexpaq 1:55a6170b404f 52 if( ctx == NULL )
nexpaq 1:55a6170b404f 53 return;
nexpaq 1:55a6170b404f 54
nexpaq 1:55a6170b404f 55 ctx->pk_info = NULL;
nexpaq 1:55a6170b404f 56 ctx->pk_ctx = NULL;
nexpaq 1:55a6170b404f 57 }
nexpaq 1:55a6170b404f 58
nexpaq 1:55a6170b404f 59 /*
nexpaq 1:55a6170b404f 60 * Free (the components of) a mbedtls_pk_context
nexpaq 1:55a6170b404f 61 */
nexpaq 1:55a6170b404f 62 void mbedtls_pk_free( mbedtls_pk_context *ctx )
nexpaq 1:55a6170b404f 63 {
nexpaq 1:55a6170b404f 64 if( ctx == NULL || ctx->pk_info == NULL )
nexpaq 1:55a6170b404f 65 return;
nexpaq 1:55a6170b404f 66
nexpaq 1:55a6170b404f 67 ctx->pk_info->ctx_free_func( ctx->pk_ctx );
nexpaq 1:55a6170b404f 68
nexpaq 1:55a6170b404f 69 mbedtls_zeroize( ctx, sizeof( mbedtls_pk_context ) );
nexpaq 1:55a6170b404f 70 }
nexpaq 1:55a6170b404f 71
nexpaq 1:55a6170b404f 72 /*
nexpaq 1:55a6170b404f 73 * Get pk_info structure from type
nexpaq 1:55a6170b404f 74 */
nexpaq 1:55a6170b404f 75 const mbedtls_pk_info_t * mbedtls_pk_info_from_type( mbedtls_pk_type_t pk_type )
nexpaq 1:55a6170b404f 76 {
nexpaq 1:55a6170b404f 77 switch( pk_type ) {
nexpaq 1:55a6170b404f 78 #if defined(MBEDTLS_RSA_C)
nexpaq 1:55a6170b404f 79 case MBEDTLS_PK_RSA:
nexpaq 1:55a6170b404f 80 return( &mbedtls_rsa_info );
nexpaq 1:55a6170b404f 81 #endif
nexpaq 1:55a6170b404f 82 #if defined(MBEDTLS_ECP_C)
nexpaq 1:55a6170b404f 83 case MBEDTLS_PK_ECKEY:
nexpaq 1:55a6170b404f 84 return( &mbedtls_eckey_info );
nexpaq 1:55a6170b404f 85 case MBEDTLS_PK_ECKEY_DH:
nexpaq 1:55a6170b404f 86 return( &mbedtls_eckeydh_info );
nexpaq 1:55a6170b404f 87 #endif
nexpaq 1:55a6170b404f 88 #if defined(MBEDTLS_ECDSA_C)
nexpaq 1:55a6170b404f 89 case MBEDTLS_PK_ECDSA:
nexpaq 1:55a6170b404f 90 return( &mbedtls_ecdsa_info );
nexpaq 1:55a6170b404f 91 #endif
nexpaq 1:55a6170b404f 92 /* MBEDTLS_PK_RSA_ALT omitted on purpose */
nexpaq 1:55a6170b404f 93 default:
nexpaq 1:55a6170b404f 94 return( NULL );
nexpaq 1:55a6170b404f 95 }
nexpaq 1:55a6170b404f 96 }
nexpaq 1:55a6170b404f 97
nexpaq 1:55a6170b404f 98 /*
nexpaq 1:55a6170b404f 99 * Initialise context
nexpaq 1:55a6170b404f 100 */
nexpaq 1:55a6170b404f 101 int mbedtls_pk_setup( mbedtls_pk_context *ctx, const mbedtls_pk_info_t *info )
nexpaq 1:55a6170b404f 102 {
nexpaq 1:55a6170b404f 103 if( ctx == NULL || info == NULL || ctx->pk_info != NULL )
nexpaq 1:55a6170b404f 104 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
nexpaq 1:55a6170b404f 105
nexpaq 1:55a6170b404f 106 if( ( ctx->pk_ctx = info->ctx_alloc_func() ) == NULL )
nexpaq 1:55a6170b404f 107 return( MBEDTLS_ERR_PK_ALLOC_FAILED );
nexpaq 1:55a6170b404f 108
nexpaq 1:55a6170b404f 109 ctx->pk_info = info;
nexpaq 1:55a6170b404f 110
nexpaq 1:55a6170b404f 111 return( 0 );
nexpaq 1:55a6170b404f 112 }
nexpaq 1:55a6170b404f 113
nexpaq 1:55a6170b404f 114 #if defined(MBEDTLS_PK_RSA_ALT_SUPPORT)
nexpaq 1:55a6170b404f 115 /*
nexpaq 1:55a6170b404f 116 * Initialize an RSA-alt context
nexpaq 1:55a6170b404f 117 */
nexpaq 1:55a6170b404f 118 int mbedtls_pk_setup_rsa_alt( mbedtls_pk_context *ctx, void * key,
nexpaq 1:55a6170b404f 119 mbedtls_pk_rsa_alt_decrypt_func decrypt_func,
nexpaq 1:55a6170b404f 120 mbedtls_pk_rsa_alt_sign_func sign_func,
nexpaq 1:55a6170b404f 121 mbedtls_pk_rsa_alt_key_len_func key_len_func )
nexpaq 1:55a6170b404f 122 {
nexpaq 1:55a6170b404f 123 mbedtls_rsa_alt_context *rsa_alt;
nexpaq 1:55a6170b404f 124 const mbedtls_pk_info_t *info = &mbedtls_rsa_alt_info;
nexpaq 1:55a6170b404f 125
nexpaq 1:55a6170b404f 126 if( ctx == NULL || ctx->pk_info != NULL )
nexpaq 1:55a6170b404f 127 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
nexpaq 1:55a6170b404f 128
nexpaq 1:55a6170b404f 129 if( ( ctx->pk_ctx = info->ctx_alloc_func() ) == NULL )
nexpaq 1:55a6170b404f 130 return( MBEDTLS_ERR_PK_ALLOC_FAILED );
nexpaq 1:55a6170b404f 131
nexpaq 1:55a6170b404f 132 ctx->pk_info = info;
nexpaq 1:55a6170b404f 133
nexpaq 1:55a6170b404f 134 rsa_alt = (mbedtls_rsa_alt_context *) ctx->pk_ctx;
nexpaq 1:55a6170b404f 135
nexpaq 1:55a6170b404f 136 rsa_alt->key = key;
nexpaq 1:55a6170b404f 137 rsa_alt->decrypt_func = decrypt_func;
nexpaq 1:55a6170b404f 138 rsa_alt->sign_func = sign_func;
nexpaq 1:55a6170b404f 139 rsa_alt->key_len_func = key_len_func;
nexpaq 1:55a6170b404f 140
nexpaq 1:55a6170b404f 141 return( 0 );
nexpaq 1:55a6170b404f 142 }
nexpaq 1:55a6170b404f 143 #endif /* MBEDTLS_PK_RSA_ALT_SUPPORT */
nexpaq 1:55a6170b404f 144
nexpaq 1:55a6170b404f 145 /*
nexpaq 1:55a6170b404f 146 * Tell if a PK can do the operations of the given type
nexpaq 1:55a6170b404f 147 */
nexpaq 1:55a6170b404f 148 int mbedtls_pk_can_do( const mbedtls_pk_context *ctx, mbedtls_pk_type_t type )
nexpaq 1:55a6170b404f 149 {
nexpaq 1:55a6170b404f 150 /* null or NONE context can't do anything */
nexpaq 1:55a6170b404f 151 if( ctx == NULL || ctx->pk_info == NULL )
nexpaq 1:55a6170b404f 152 return( 0 );
nexpaq 1:55a6170b404f 153
nexpaq 1:55a6170b404f 154 return( ctx->pk_info->can_do( type ) );
nexpaq 1:55a6170b404f 155 }
nexpaq 1:55a6170b404f 156
nexpaq 1:55a6170b404f 157 /*
nexpaq 1:55a6170b404f 158 * Helper for mbedtls_pk_sign and mbedtls_pk_verify
nexpaq 1:55a6170b404f 159 */
nexpaq 1:55a6170b404f 160 static inline int pk_hashlen_helper( mbedtls_md_type_t md_alg, size_t *hash_len )
nexpaq 1:55a6170b404f 161 {
nexpaq 1:55a6170b404f 162 const mbedtls_md_info_t *md_info;
nexpaq 1:55a6170b404f 163
nexpaq 1:55a6170b404f 164 if( *hash_len != 0 )
nexpaq 1:55a6170b404f 165 return( 0 );
nexpaq 1:55a6170b404f 166
nexpaq 1:55a6170b404f 167 if( ( md_info = mbedtls_md_info_from_type( md_alg ) ) == NULL )
nexpaq 1:55a6170b404f 168 return( -1 );
nexpaq 1:55a6170b404f 169
nexpaq 1:55a6170b404f 170 *hash_len = mbedtls_md_get_size( md_info );
nexpaq 1:55a6170b404f 171 return( 0 );
nexpaq 1:55a6170b404f 172 }
nexpaq 1:55a6170b404f 173
nexpaq 1:55a6170b404f 174 /*
nexpaq 1:55a6170b404f 175 * Verify a signature
nexpaq 1:55a6170b404f 176 */
nexpaq 1:55a6170b404f 177 int mbedtls_pk_verify( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
nexpaq 1:55a6170b404f 178 const unsigned char *hash, size_t hash_len,
nexpaq 1:55a6170b404f 179 const unsigned char *sig, size_t sig_len )
nexpaq 1:55a6170b404f 180 {
nexpaq 1:55a6170b404f 181 if( ctx == NULL || ctx->pk_info == NULL ||
nexpaq 1:55a6170b404f 182 pk_hashlen_helper( md_alg, &hash_len ) != 0 )
nexpaq 1:55a6170b404f 183 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
nexpaq 1:55a6170b404f 184
nexpaq 1:55a6170b404f 185 if( ctx->pk_info->verify_func == NULL )
nexpaq 1:55a6170b404f 186 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
nexpaq 1:55a6170b404f 187
nexpaq 1:55a6170b404f 188 return( ctx->pk_info->verify_func( ctx->pk_ctx, md_alg, hash, hash_len,
nexpaq 1:55a6170b404f 189 sig, sig_len ) );
nexpaq 1:55a6170b404f 190 }
nexpaq 1:55a6170b404f 191
nexpaq 1:55a6170b404f 192 /*
nexpaq 1:55a6170b404f 193 * Verify a signature with options
nexpaq 1:55a6170b404f 194 */
nexpaq 1:55a6170b404f 195 int mbedtls_pk_verify_ext( mbedtls_pk_type_t type, const void *options,
nexpaq 1:55a6170b404f 196 mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
nexpaq 1:55a6170b404f 197 const unsigned char *hash, size_t hash_len,
nexpaq 1:55a6170b404f 198 const unsigned char *sig, size_t sig_len )
nexpaq 1:55a6170b404f 199 {
nexpaq 1:55a6170b404f 200 if( ctx == NULL || ctx->pk_info == NULL )
nexpaq 1:55a6170b404f 201 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
nexpaq 1:55a6170b404f 202
nexpaq 1:55a6170b404f 203 if( ! mbedtls_pk_can_do( ctx, type ) )
nexpaq 1:55a6170b404f 204 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
nexpaq 1:55a6170b404f 205
nexpaq 1:55a6170b404f 206 if( type == MBEDTLS_PK_RSASSA_PSS )
nexpaq 1:55a6170b404f 207 {
nexpaq 1:55a6170b404f 208 #if defined(MBEDTLS_RSA_C) && defined(MBEDTLS_PKCS1_V21)
nexpaq 1:55a6170b404f 209 int ret;
nexpaq 1:55a6170b404f 210 const mbedtls_pk_rsassa_pss_options *pss_opts;
nexpaq 1:55a6170b404f 211
nexpaq 1:55a6170b404f 212 if( options == NULL )
nexpaq 1:55a6170b404f 213 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
nexpaq 1:55a6170b404f 214
nexpaq 1:55a6170b404f 215 pss_opts = (const mbedtls_pk_rsassa_pss_options *) options;
nexpaq 1:55a6170b404f 216
nexpaq 1:55a6170b404f 217 if( sig_len < mbedtls_pk_get_len( ctx ) )
nexpaq 1:55a6170b404f 218 return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
nexpaq 1:55a6170b404f 219
nexpaq 1:55a6170b404f 220 ret = mbedtls_rsa_rsassa_pss_verify_ext( mbedtls_pk_rsa( *ctx ),
nexpaq 1:55a6170b404f 221 NULL, NULL, MBEDTLS_RSA_PUBLIC,
nexpaq 1:55a6170b404f 222 md_alg, (unsigned int) hash_len, hash,
nexpaq 1:55a6170b404f 223 pss_opts->mgf1_hash_id,
nexpaq 1:55a6170b404f 224 pss_opts->expected_salt_len,
nexpaq 1:55a6170b404f 225 sig );
nexpaq 1:55a6170b404f 226 if( ret != 0 )
nexpaq 1:55a6170b404f 227 return( ret );
nexpaq 1:55a6170b404f 228
nexpaq 1:55a6170b404f 229 if( sig_len > mbedtls_pk_get_len( ctx ) )
nexpaq 1:55a6170b404f 230 return( MBEDTLS_ERR_PK_SIG_LEN_MISMATCH );
nexpaq 1:55a6170b404f 231
nexpaq 1:55a6170b404f 232 return( 0 );
nexpaq 1:55a6170b404f 233 #else
nexpaq 1:55a6170b404f 234 return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
nexpaq 1:55a6170b404f 235 #endif
nexpaq 1:55a6170b404f 236 }
nexpaq 1:55a6170b404f 237
nexpaq 1:55a6170b404f 238 /* General case: no options */
nexpaq 1:55a6170b404f 239 if( options != NULL )
nexpaq 1:55a6170b404f 240 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
nexpaq 1:55a6170b404f 241
nexpaq 1:55a6170b404f 242 return( mbedtls_pk_verify( ctx, md_alg, hash, hash_len, sig, sig_len ) );
nexpaq 1:55a6170b404f 243 }
nexpaq 1:55a6170b404f 244
nexpaq 1:55a6170b404f 245 /*
nexpaq 1:55a6170b404f 246 * Make a signature
nexpaq 1:55a6170b404f 247 */
nexpaq 1:55a6170b404f 248 int mbedtls_pk_sign( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
nexpaq 1:55a6170b404f 249 const unsigned char *hash, size_t hash_len,
nexpaq 1:55a6170b404f 250 unsigned char *sig, size_t *sig_len,
nexpaq 1:55a6170b404f 251 int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
nexpaq 1:55a6170b404f 252 {
nexpaq 1:55a6170b404f 253 if( ctx == NULL || ctx->pk_info == NULL ||
nexpaq 1:55a6170b404f 254 pk_hashlen_helper( md_alg, &hash_len ) != 0 )
nexpaq 1:55a6170b404f 255 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
nexpaq 1:55a6170b404f 256
nexpaq 1:55a6170b404f 257 if( ctx->pk_info->sign_func == NULL )
nexpaq 1:55a6170b404f 258 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
nexpaq 1:55a6170b404f 259
nexpaq 1:55a6170b404f 260 return( ctx->pk_info->sign_func( ctx->pk_ctx, md_alg, hash, hash_len,
nexpaq 1:55a6170b404f 261 sig, sig_len, f_rng, p_rng ) );
nexpaq 1:55a6170b404f 262 }
nexpaq 1:55a6170b404f 263
nexpaq 1:55a6170b404f 264 /*
nexpaq 1:55a6170b404f 265 * Decrypt message
nexpaq 1:55a6170b404f 266 */
nexpaq 1:55a6170b404f 267 int mbedtls_pk_decrypt( mbedtls_pk_context *ctx,
nexpaq 1:55a6170b404f 268 const unsigned char *input, size_t ilen,
nexpaq 1:55a6170b404f 269 unsigned char *output, size_t *olen, size_t osize,
nexpaq 1:55a6170b404f 270 int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
nexpaq 1:55a6170b404f 271 {
nexpaq 1:55a6170b404f 272 if( ctx == NULL || ctx->pk_info == NULL )
nexpaq 1:55a6170b404f 273 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
nexpaq 1:55a6170b404f 274
nexpaq 1:55a6170b404f 275 if( ctx->pk_info->decrypt_func == NULL )
nexpaq 1:55a6170b404f 276 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
nexpaq 1:55a6170b404f 277
nexpaq 1:55a6170b404f 278 return( ctx->pk_info->decrypt_func( ctx->pk_ctx, input, ilen,
nexpaq 1:55a6170b404f 279 output, olen, osize, f_rng, p_rng ) );
nexpaq 1:55a6170b404f 280 }
nexpaq 1:55a6170b404f 281
nexpaq 1:55a6170b404f 282 /*
nexpaq 1:55a6170b404f 283 * Encrypt message
nexpaq 1:55a6170b404f 284 */
nexpaq 1:55a6170b404f 285 int mbedtls_pk_encrypt( mbedtls_pk_context *ctx,
nexpaq 1:55a6170b404f 286 const unsigned char *input, size_t ilen,
nexpaq 1:55a6170b404f 287 unsigned char *output, size_t *olen, size_t osize,
nexpaq 1:55a6170b404f 288 int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
nexpaq 1:55a6170b404f 289 {
nexpaq 1:55a6170b404f 290 if( ctx == NULL || ctx->pk_info == NULL )
nexpaq 1:55a6170b404f 291 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
nexpaq 1:55a6170b404f 292
nexpaq 1:55a6170b404f 293 if( ctx->pk_info->encrypt_func == NULL )
nexpaq 1:55a6170b404f 294 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
nexpaq 1:55a6170b404f 295
nexpaq 1:55a6170b404f 296 return( ctx->pk_info->encrypt_func( ctx->pk_ctx, input, ilen,
nexpaq 1:55a6170b404f 297 output, olen, osize, f_rng, p_rng ) );
nexpaq 1:55a6170b404f 298 }
nexpaq 1:55a6170b404f 299
nexpaq 1:55a6170b404f 300 /*
nexpaq 1:55a6170b404f 301 * Check public-private key pair
nexpaq 1:55a6170b404f 302 */
nexpaq 1:55a6170b404f 303 int mbedtls_pk_check_pair( const mbedtls_pk_context *pub, const mbedtls_pk_context *prv )
nexpaq 1:55a6170b404f 304 {
nexpaq 1:55a6170b404f 305 if( pub == NULL || pub->pk_info == NULL ||
nexpaq 1:55a6170b404f 306 prv == NULL || prv->pk_info == NULL ||
nexpaq 1:55a6170b404f 307 prv->pk_info->check_pair_func == NULL )
nexpaq 1:55a6170b404f 308 {
nexpaq 1:55a6170b404f 309 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
nexpaq 1:55a6170b404f 310 }
nexpaq 1:55a6170b404f 311
nexpaq 1:55a6170b404f 312 if( prv->pk_info->type == MBEDTLS_PK_RSA_ALT )
nexpaq 1:55a6170b404f 313 {
nexpaq 1:55a6170b404f 314 if( pub->pk_info->type != MBEDTLS_PK_RSA )
nexpaq 1:55a6170b404f 315 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
nexpaq 1:55a6170b404f 316 }
nexpaq 1:55a6170b404f 317 else
nexpaq 1:55a6170b404f 318 {
nexpaq 1:55a6170b404f 319 if( pub->pk_info != prv->pk_info )
nexpaq 1:55a6170b404f 320 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
nexpaq 1:55a6170b404f 321 }
nexpaq 1:55a6170b404f 322
nexpaq 1:55a6170b404f 323 return( prv->pk_info->check_pair_func( pub->pk_ctx, prv->pk_ctx ) );
nexpaq 1:55a6170b404f 324 }
nexpaq 1:55a6170b404f 325
nexpaq 1:55a6170b404f 326 /*
nexpaq 1:55a6170b404f 327 * Get key size in bits
nexpaq 1:55a6170b404f 328 */
nexpaq 1:55a6170b404f 329 size_t mbedtls_pk_get_bitlen( const mbedtls_pk_context *ctx )
nexpaq 1:55a6170b404f 330 {
nexpaq 1:55a6170b404f 331 if( ctx == NULL || ctx->pk_info == NULL )
nexpaq 1:55a6170b404f 332 return( 0 );
nexpaq 1:55a6170b404f 333
nexpaq 1:55a6170b404f 334 return( ctx->pk_info->get_bitlen( ctx->pk_ctx ) );
nexpaq 1:55a6170b404f 335 }
nexpaq 1:55a6170b404f 336
nexpaq 1:55a6170b404f 337 /*
nexpaq 1:55a6170b404f 338 * Export debug information
nexpaq 1:55a6170b404f 339 */
nexpaq 1:55a6170b404f 340 int mbedtls_pk_debug( const mbedtls_pk_context *ctx, mbedtls_pk_debug_item *items )
nexpaq 1:55a6170b404f 341 {
nexpaq 1:55a6170b404f 342 if( ctx == NULL || ctx->pk_info == NULL )
nexpaq 1:55a6170b404f 343 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
nexpaq 1:55a6170b404f 344
nexpaq 1:55a6170b404f 345 if( ctx->pk_info->debug_func == NULL )
nexpaq 1:55a6170b404f 346 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
nexpaq 1:55a6170b404f 347
nexpaq 1:55a6170b404f 348 ctx->pk_info->debug_func( ctx->pk_ctx, items );
nexpaq 1:55a6170b404f 349 return( 0 );
nexpaq 1:55a6170b404f 350 }
nexpaq 1:55a6170b404f 351
nexpaq 1:55a6170b404f 352 /*
nexpaq 1:55a6170b404f 353 * Access the PK type name
nexpaq 1:55a6170b404f 354 */
nexpaq 1:55a6170b404f 355 const char *mbedtls_pk_get_name( const mbedtls_pk_context *ctx )
nexpaq 1:55a6170b404f 356 {
nexpaq 1:55a6170b404f 357 if( ctx == NULL || ctx->pk_info == NULL )
nexpaq 1:55a6170b404f 358 return( "invalid PK" );
nexpaq 1:55a6170b404f 359
nexpaq 1:55a6170b404f 360 return( ctx->pk_info->name );
nexpaq 1:55a6170b404f 361 }
nexpaq 1:55a6170b404f 362
nexpaq 1:55a6170b404f 363 /*
nexpaq 1:55a6170b404f 364 * Access the PK type
nexpaq 1:55a6170b404f 365 */
nexpaq 1:55a6170b404f 366 mbedtls_pk_type_t mbedtls_pk_get_type( const mbedtls_pk_context *ctx )
nexpaq 1:55a6170b404f 367 {
nexpaq 1:55a6170b404f 368 if( ctx == NULL || ctx->pk_info == NULL )
nexpaq 1:55a6170b404f 369 return( MBEDTLS_PK_NONE );
nexpaq 1:55a6170b404f 370
nexpaq 1:55a6170b404f 371 return( ctx->pk_info->type );
nexpaq 1:55a6170b404f 372 }
nexpaq 1:55a6170b404f 373
nexpaq 1:55a6170b404f 374 #endif /* MBEDTLS_PK_C */