Timothy Beight / Mbed 2 deprecated 6_songs-from-the-cloud

This is a fork due to permission issues

Dependencies:   mbed Socket lwip-eth lwip-sys lwip

Fork of 6_songs-from-the-cloud by MakingMusicWorkshop

mbed-client/mbedtls/source/pk.c@1:0ddbe2d3319c, 2016-05-19 (annotated)

Committer:
timbeight
Date:
Thu May 19 16:02:10 2016 +0000
Revision:
1:0ddbe2d3319c
Parent:
0:f7c60d3e7b8a 
This is my first commit while in the class.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
maclobdell 0:f7c60d3e7b8a 1 /*
maclobdell 0:f7c60d3e7b8a 2 * Public Key abstraction layer
maclobdell 0:f7c60d3e7b8a 3 *
maclobdell 0:f7c60d3e7b8a 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
maclobdell 0:f7c60d3e7b8a 5 * SPDX-License-Identifier: Apache-2.0
maclobdell 0:f7c60d3e7b8a 6 *
maclobdell 0:f7c60d3e7b8a 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
maclobdell 0:f7c60d3e7b8a 8 * not use this file except in compliance with the License.
maclobdell 0:f7c60d3e7b8a 9 * You may obtain a copy of the License at
maclobdell 0:f7c60d3e7b8a 10 *
maclobdell 0:f7c60d3e7b8a 11 * http://www.apache.org/licenses/LICENSE-2.0
maclobdell 0:f7c60d3e7b8a 12 *
maclobdell 0:f7c60d3e7b8a 13 * Unless required by applicable law or agreed to in writing, software
maclobdell 0:f7c60d3e7b8a 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
maclobdell 0:f7c60d3e7b8a 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
maclobdell 0:f7c60d3e7b8a 16 * See the License for the specific language governing permissions and
maclobdell 0:f7c60d3e7b8a 17 * limitations under the License.
maclobdell 0:f7c60d3e7b8a 18 *
maclobdell 0:f7c60d3e7b8a 19 * This file is part of mbed TLS (https://tls.mbed.org)
maclobdell 0:f7c60d3e7b8a 20 */
maclobdell 0:f7c60d3e7b8a 21
maclobdell 0:f7c60d3e7b8a 22 #if !defined(MBEDTLS_CONFIG_FILE)
maclobdell 0:f7c60d3e7b8a 23 #include "mbedtls/config.h"
maclobdell 0:f7c60d3e7b8a 24 #else
maclobdell 0:f7c60d3e7b8a 25 #include MBEDTLS_CONFIG_FILE
maclobdell 0:f7c60d3e7b8a 26 #endif
maclobdell 0:f7c60d3e7b8a 27
maclobdell 0:f7c60d3e7b8a 28 #if defined(MBEDTLS_PK_C)
maclobdell 0:f7c60d3e7b8a 29 #include "mbedtls/pk.h"
maclobdell 0:f7c60d3e7b8a 30 #include "mbedtls/pk_internal.h"
maclobdell 0:f7c60d3e7b8a 31
maclobdell 0:f7c60d3e7b8a 32 #if defined(MBEDTLS_RSA_C)
maclobdell 0:f7c60d3e7b8a 33 #include "mbedtls/rsa.h"
maclobdell 0:f7c60d3e7b8a 34 #endif
maclobdell 0:f7c60d3e7b8a 35 #if defined(MBEDTLS_ECP_C)
maclobdell 0:f7c60d3e7b8a 36 #include "mbedtls/ecp.h"
maclobdell 0:f7c60d3e7b8a 37 #endif
maclobdell 0:f7c60d3e7b8a 38 #if defined(MBEDTLS_ECDSA_C)
maclobdell 0:f7c60d3e7b8a 39 #include "mbedtls/ecdsa.h"
maclobdell 0:f7c60d3e7b8a 40 #endif
maclobdell 0:f7c60d3e7b8a 41
maclobdell 0:f7c60d3e7b8a 42 /* Implementation that should never be optimized out by the compiler */
maclobdell 0:f7c60d3e7b8a 43 static void mbedtls_zeroize( void *v, size_t n ) {
maclobdell 0:f7c60d3e7b8a 44 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
maclobdell 0:f7c60d3e7b8a 45 }
maclobdell 0:f7c60d3e7b8a 46
maclobdell 0:f7c60d3e7b8a 47 /*
maclobdell 0:f7c60d3e7b8a 48 * Initialise a mbedtls_pk_context
maclobdell 0:f7c60d3e7b8a 49 */
maclobdell 0:f7c60d3e7b8a 50 void mbedtls_pk_init( mbedtls_pk_context *ctx )
maclobdell 0:f7c60d3e7b8a 51 {
maclobdell 0:f7c60d3e7b8a 52 if( ctx == NULL )
maclobdell 0:f7c60d3e7b8a 53 return;
maclobdell 0:f7c60d3e7b8a 54
maclobdell 0:f7c60d3e7b8a 55 ctx->pk_info = NULL;
maclobdell 0:f7c60d3e7b8a 56 ctx->pk_ctx = NULL;
maclobdell 0:f7c60d3e7b8a 57 }
maclobdell 0:f7c60d3e7b8a 58
maclobdell 0:f7c60d3e7b8a 59 /*
maclobdell 0:f7c60d3e7b8a 60 * Free (the components of) a mbedtls_pk_context
maclobdell 0:f7c60d3e7b8a 61 */
maclobdell 0:f7c60d3e7b8a 62 void mbedtls_pk_free( mbedtls_pk_context *ctx )
maclobdell 0:f7c60d3e7b8a 63 {
maclobdell 0:f7c60d3e7b8a 64 if( ctx == NULL || ctx->pk_info == NULL )
maclobdell 0:f7c60d3e7b8a 65 return;
maclobdell 0:f7c60d3e7b8a 66
maclobdell 0:f7c60d3e7b8a 67 ctx->pk_info->ctx_free_func( ctx->pk_ctx );
maclobdell 0:f7c60d3e7b8a 68
maclobdell 0:f7c60d3e7b8a 69 mbedtls_zeroize( ctx, sizeof( mbedtls_pk_context ) );
maclobdell 0:f7c60d3e7b8a 70 }
maclobdell 0:f7c60d3e7b8a 71
maclobdell 0:f7c60d3e7b8a 72 /*
maclobdell 0:f7c60d3e7b8a 73 * Get pk_info structure from type
maclobdell 0:f7c60d3e7b8a 74 */
maclobdell 0:f7c60d3e7b8a 75 const mbedtls_pk_info_t * mbedtls_pk_info_from_type( mbedtls_pk_type_t pk_type )
maclobdell 0:f7c60d3e7b8a 76 {
maclobdell 0:f7c60d3e7b8a 77 switch( pk_type ) {
maclobdell 0:f7c60d3e7b8a 78 #if defined(MBEDTLS_RSA_C)
maclobdell 0:f7c60d3e7b8a 79 case MBEDTLS_PK_RSA:
maclobdell 0:f7c60d3e7b8a 80 return( &mbedtls_rsa_info );
maclobdell 0:f7c60d3e7b8a 81 #endif
maclobdell 0:f7c60d3e7b8a 82 #if defined(MBEDTLS_ECP_C)
maclobdell 0:f7c60d3e7b8a 83 case MBEDTLS_PK_ECKEY:
maclobdell 0:f7c60d3e7b8a 84 return( &mbedtls_eckey_info );
maclobdell 0:f7c60d3e7b8a 85 case MBEDTLS_PK_ECKEY_DH:
maclobdell 0:f7c60d3e7b8a 86 return( &mbedtls_eckeydh_info );
maclobdell 0:f7c60d3e7b8a 87 #endif
maclobdell 0:f7c60d3e7b8a 88 #if defined(MBEDTLS_ECDSA_C)
maclobdell 0:f7c60d3e7b8a 89 case MBEDTLS_PK_ECDSA:
maclobdell 0:f7c60d3e7b8a 90 return( &mbedtls_ecdsa_info );
maclobdell 0:f7c60d3e7b8a 91 #endif
maclobdell 0:f7c60d3e7b8a 92 /* MBEDTLS_PK_RSA_ALT omitted on purpose */
maclobdell 0:f7c60d3e7b8a 93 default:
maclobdell 0:f7c60d3e7b8a 94 return( NULL );
maclobdell 0:f7c60d3e7b8a 95 }
maclobdell 0:f7c60d3e7b8a 96 }
maclobdell 0:f7c60d3e7b8a 97
maclobdell 0:f7c60d3e7b8a 98 /*
maclobdell 0:f7c60d3e7b8a 99 * Initialise context
maclobdell 0:f7c60d3e7b8a 100 */
maclobdell 0:f7c60d3e7b8a 101 int mbedtls_pk_setup( mbedtls_pk_context *ctx, const mbedtls_pk_info_t *info )
maclobdell 0:f7c60d3e7b8a 102 {
maclobdell 0:f7c60d3e7b8a 103 if( ctx == NULL || info == NULL || ctx->pk_info != NULL )
maclobdell 0:f7c60d3e7b8a 104 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 105
maclobdell 0:f7c60d3e7b8a 106 if( ( ctx->pk_ctx = info->ctx_alloc_func() ) == NULL )
maclobdell 0:f7c60d3e7b8a 107 return( MBEDTLS_ERR_PK_ALLOC_FAILED );
maclobdell 0:f7c60d3e7b8a 108
maclobdell 0:f7c60d3e7b8a 109 ctx->pk_info = info;
maclobdell 0:f7c60d3e7b8a 110
maclobdell 0:f7c60d3e7b8a 111 return( 0 );
maclobdell 0:f7c60d3e7b8a 112 }
maclobdell 0:f7c60d3e7b8a 113
maclobdell 0:f7c60d3e7b8a 114 #if defined(MBEDTLS_PK_RSA_ALT_SUPPORT)
maclobdell 0:f7c60d3e7b8a 115 /*
maclobdell 0:f7c60d3e7b8a 116 * Initialize an RSA-alt context
maclobdell 0:f7c60d3e7b8a 117 */
maclobdell 0:f7c60d3e7b8a 118 int mbedtls_pk_setup_rsa_alt( mbedtls_pk_context *ctx, void * key,
maclobdell 0:f7c60d3e7b8a 119 mbedtls_pk_rsa_alt_decrypt_func decrypt_func,
maclobdell 0:f7c60d3e7b8a 120 mbedtls_pk_rsa_alt_sign_func sign_func,
maclobdell 0:f7c60d3e7b8a 121 mbedtls_pk_rsa_alt_key_len_func key_len_func )
maclobdell 0:f7c60d3e7b8a 122 {
maclobdell 0:f7c60d3e7b8a 123 mbedtls_rsa_alt_context *rsa_alt;
maclobdell 0:f7c60d3e7b8a 124 const mbedtls_pk_info_t *info = &mbedtls_rsa_alt_info;
maclobdell 0:f7c60d3e7b8a 125
maclobdell 0:f7c60d3e7b8a 126 if( ctx == NULL || ctx->pk_info != NULL )
maclobdell 0:f7c60d3e7b8a 127 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 128
maclobdell 0:f7c60d3e7b8a 129 if( ( ctx->pk_ctx = info->ctx_alloc_func() ) == NULL )
maclobdell 0:f7c60d3e7b8a 130 return( MBEDTLS_ERR_PK_ALLOC_FAILED );
maclobdell 0:f7c60d3e7b8a 131
maclobdell 0:f7c60d3e7b8a 132 ctx->pk_info = info;
maclobdell 0:f7c60d3e7b8a 133
maclobdell 0:f7c60d3e7b8a 134 rsa_alt = (mbedtls_rsa_alt_context *) ctx->pk_ctx;
maclobdell 0:f7c60d3e7b8a 135
maclobdell 0:f7c60d3e7b8a 136 rsa_alt->key = key;
maclobdell 0:f7c60d3e7b8a 137 rsa_alt->decrypt_func = decrypt_func;
maclobdell 0:f7c60d3e7b8a 138 rsa_alt->sign_func = sign_func;
maclobdell 0:f7c60d3e7b8a 139 rsa_alt->key_len_func = key_len_func;
maclobdell 0:f7c60d3e7b8a 140
maclobdell 0:f7c60d3e7b8a 141 return( 0 );
maclobdell 0:f7c60d3e7b8a 142 }
maclobdell 0:f7c60d3e7b8a 143 #endif /* MBEDTLS_PK_RSA_ALT_SUPPORT */
maclobdell 0:f7c60d3e7b8a 144
maclobdell 0:f7c60d3e7b8a 145 /*
maclobdell 0:f7c60d3e7b8a 146 * Tell if a PK can do the operations of the given type
maclobdell 0:f7c60d3e7b8a 147 */
maclobdell 0:f7c60d3e7b8a 148 int mbedtls_pk_can_do( const mbedtls_pk_context *ctx, mbedtls_pk_type_t type )
maclobdell 0:f7c60d3e7b8a 149 {
maclobdell 0:f7c60d3e7b8a 150 /* null or NONE context can't do anything */
maclobdell 0:f7c60d3e7b8a 151 if( ctx == NULL || ctx->pk_info == NULL )
maclobdell 0:f7c60d3e7b8a 152 return( 0 );
maclobdell 0:f7c60d3e7b8a 153
maclobdell 0:f7c60d3e7b8a 154 return( ctx->pk_info->can_do( type ) );
maclobdell 0:f7c60d3e7b8a 155 }
maclobdell 0:f7c60d3e7b8a 156
maclobdell 0:f7c60d3e7b8a 157 /*
maclobdell 0:f7c60d3e7b8a 158 * Helper for mbedtls_pk_sign and mbedtls_pk_verify
maclobdell 0:f7c60d3e7b8a 159 */
maclobdell 0:f7c60d3e7b8a 160 static inline int pk_hashlen_helper( mbedtls_md_type_t md_alg, size_t *hash_len )
maclobdell 0:f7c60d3e7b8a 161 {
maclobdell 0:f7c60d3e7b8a 162 const mbedtls_md_info_t *md_info;
maclobdell 0:f7c60d3e7b8a 163
maclobdell 0:f7c60d3e7b8a 164 if( *hash_len != 0 )
maclobdell 0:f7c60d3e7b8a 165 return( 0 );
maclobdell 0:f7c60d3e7b8a 166
maclobdell 0:f7c60d3e7b8a 167 if( ( md_info = mbedtls_md_info_from_type( md_alg ) ) == NULL )
maclobdell 0:f7c60d3e7b8a 168 return( -1 );
maclobdell 0:f7c60d3e7b8a 169
maclobdell 0:f7c60d3e7b8a 170 *hash_len = mbedtls_md_get_size( md_info );
maclobdell 0:f7c60d3e7b8a 171 return( 0 );
maclobdell 0:f7c60d3e7b8a 172 }
maclobdell 0:f7c60d3e7b8a 173
maclobdell 0:f7c60d3e7b8a 174 /*
maclobdell 0:f7c60d3e7b8a 175 * Verify a signature
maclobdell 0:f7c60d3e7b8a 176 */
maclobdell 0:f7c60d3e7b8a 177 int mbedtls_pk_verify( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
maclobdell 0:f7c60d3e7b8a 178 const unsigned char *hash, size_t hash_len,
maclobdell 0:f7c60d3e7b8a 179 const unsigned char *sig, size_t sig_len )
maclobdell 0:f7c60d3e7b8a 180 {
maclobdell 0:f7c60d3e7b8a 181 if( ctx == NULL || ctx->pk_info == NULL ||
maclobdell 0:f7c60d3e7b8a 182 pk_hashlen_helper( md_alg, &hash_len ) != 0 )
maclobdell 0:f7c60d3e7b8a 183 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 184
maclobdell 0:f7c60d3e7b8a 185 if( ctx->pk_info->verify_func == NULL )
maclobdell 0:f7c60d3e7b8a 186 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
maclobdell 0:f7c60d3e7b8a 187
maclobdell 0:f7c60d3e7b8a 188 return( ctx->pk_info->verify_func( ctx->pk_ctx, md_alg, hash, hash_len,
maclobdell 0:f7c60d3e7b8a 189 sig, sig_len ) );
maclobdell 0:f7c60d3e7b8a 190 }
maclobdell 0:f7c60d3e7b8a 191
maclobdell 0:f7c60d3e7b8a 192 /*
maclobdell 0:f7c60d3e7b8a 193 * Verify a signature with options
maclobdell 0:f7c60d3e7b8a 194 */
maclobdell 0:f7c60d3e7b8a 195 int mbedtls_pk_verify_ext( mbedtls_pk_type_t type, const void *options,
maclobdell 0:f7c60d3e7b8a 196 mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
maclobdell 0:f7c60d3e7b8a 197 const unsigned char *hash, size_t hash_len,
maclobdell 0:f7c60d3e7b8a 198 const unsigned char *sig, size_t sig_len )
maclobdell 0:f7c60d3e7b8a 199 {
maclobdell 0:f7c60d3e7b8a 200 if( ctx == NULL || ctx->pk_info == NULL )
maclobdell 0:f7c60d3e7b8a 201 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 202
maclobdell 0:f7c60d3e7b8a 203 if( ! mbedtls_pk_can_do( ctx, type ) )
maclobdell 0:f7c60d3e7b8a 204 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
maclobdell 0:f7c60d3e7b8a 205
maclobdell 0:f7c60d3e7b8a 206 if( type == MBEDTLS_PK_RSASSA_PSS )
maclobdell 0:f7c60d3e7b8a 207 {
maclobdell 0:f7c60d3e7b8a 208 #if defined(MBEDTLS_RSA_C) && defined(MBEDTLS_PKCS1_V21)
maclobdell 0:f7c60d3e7b8a 209 int ret;
maclobdell 0:f7c60d3e7b8a 210 const mbedtls_pk_rsassa_pss_options *pss_opts;
maclobdell 0:f7c60d3e7b8a 211
maclobdell 0:f7c60d3e7b8a 212 if( options == NULL )
maclobdell 0:f7c60d3e7b8a 213 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 214
maclobdell 0:f7c60d3e7b8a 215 pss_opts = (const mbedtls_pk_rsassa_pss_options *) options;
maclobdell 0:f7c60d3e7b8a 216
maclobdell 0:f7c60d3e7b8a 217 if( sig_len < mbedtls_pk_get_len( ctx ) )
maclobdell 0:f7c60d3e7b8a 218 return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
maclobdell 0:f7c60d3e7b8a 219
maclobdell 0:f7c60d3e7b8a 220 ret = mbedtls_rsa_rsassa_pss_verify_ext( mbedtls_pk_rsa( *ctx ),
maclobdell 0:f7c60d3e7b8a 221 NULL, NULL, MBEDTLS_RSA_PUBLIC,
maclobdell 0:f7c60d3e7b8a 222 md_alg, (unsigned int) hash_len, hash,
maclobdell 0:f7c60d3e7b8a 223 pss_opts->mgf1_hash_id,
maclobdell 0:f7c60d3e7b8a 224 pss_opts->expected_salt_len,
maclobdell 0:f7c60d3e7b8a 225 sig );
maclobdell 0:f7c60d3e7b8a 226 if( ret != 0 )
maclobdell 0:f7c60d3e7b8a 227 return( ret );
maclobdell 0:f7c60d3e7b8a 228
maclobdell 0:f7c60d3e7b8a 229 if( sig_len > mbedtls_pk_get_len( ctx ) )
maclobdell 0:f7c60d3e7b8a 230 return( MBEDTLS_ERR_PK_SIG_LEN_MISMATCH );
maclobdell 0:f7c60d3e7b8a 231
maclobdell 0:f7c60d3e7b8a 232 return( 0 );
maclobdell 0:f7c60d3e7b8a 233 #else
maclobdell 0:f7c60d3e7b8a 234 return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
maclobdell 0:f7c60d3e7b8a 235 #endif
maclobdell 0:f7c60d3e7b8a 236 }
maclobdell 0:f7c60d3e7b8a 237
maclobdell 0:f7c60d3e7b8a 238 /* General case: no options */
maclobdell 0:f7c60d3e7b8a 239 if( options != NULL )
maclobdell 0:f7c60d3e7b8a 240 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 241
maclobdell 0:f7c60d3e7b8a 242 return( mbedtls_pk_verify( ctx, md_alg, hash, hash_len, sig, sig_len ) );
maclobdell 0:f7c60d3e7b8a 243 }
maclobdell 0:f7c60d3e7b8a 244
maclobdell 0:f7c60d3e7b8a 245 /*
maclobdell 0:f7c60d3e7b8a 246 * Make a signature
maclobdell 0:f7c60d3e7b8a 247 */
maclobdell 0:f7c60d3e7b8a 248 int mbedtls_pk_sign( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
maclobdell 0:f7c60d3e7b8a 249 const unsigned char *hash, size_t hash_len,
maclobdell 0:f7c60d3e7b8a 250 unsigned char *sig, size_t *sig_len,
maclobdell 0:f7c60d3e7b8a 251 int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
maclobdell 0:f7c60d3e7b8a 252 {
maclobdell 0:f7c60d3e7b8a 253 if( ctx == NULL || ctx->pk_info == NULL ||
maclobdell 0:f7c60d3e7b8a 254 pk_hashlen_helper( md_alg, &hash_len ) != 0 )
maclobdell 0:f7c60d3e7b8a 255 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 256
maclobdell 0:f7c60d3e7b8a 257 if( ctx->pk_info->sign_func == NULL )
maclobdell 0:f7c60d3e7b8a 258 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
maclobdell 0:f7c60d3e7b8a 259
maclobdell 0:f7c60d3e7b8a 260 return( ctx->pk_info->sign_func( ctx->pk_ctx, md_alg, hash, hash_len,
maclobdell 0:f7c60d3e7b8a 261 sig, sig_len, f_rng, p_rng ) );
maclobdell 0:f7c60d3e7b8a 262 }
maclobdell 0:f7c60d3e7b8a 263
maclobdell 0:f7c60d3e7b8a 264 /*
maclobdell 0:f7c60d3e7b8a 265 * Decrypt message
maclobdell 0:f7c60d3e7b8a 266 */
maclobdell 0:f7c60d3e7b8a 267 int mbedtls_pk_decrypt( mbedtls_pk_context *ctx,
maclobdell 0:f7c60d3e7b8a 268 const unsigned char *input, size_t ilen,
maclobdell 0:f7c60d3e7b8a 269 unsigned char *output, size_t *olen, size_t osize,
maclobdell 0:f7c60d3e7b8a 270 int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
maclobdell 0:f7c60d3e7b8a 271 {
maclobdell 0:f7c60d3e7b8a 272 if( ctx == NULL || ctx->pk_info == NULL )
maclobdell 0:f7c60d3e7b8a 273 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 274
maclobdell 0:f7c60d3e7b8a 275 if( ctx->pk_info->decrypt_func == NULL )
maclobdell 0:f7c60d3e7b8a 276 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
maclobdell 0:f7c60d3e7b8a 277
maclobdell 0:f7c60d3e7b8a 278 return( ctx->pk_info->decrypt_func( ctx->pk_ctx, input, ilen,
maclobdell 0:f7c60d3e7b8a 279 output, olen, osize, f_rng, p_rng ) );
maclobdell 0:f7c60d3e7b8a 280 }
maclobdell 0:f7c60d3e7b8a 281
maclobdell 0:f7c60d3e7b8a 282 /*
maclobdell 0:f7c60d3e7b8a 283 * Encrypt message
maclobdell 0:f7c60d3e7b8a 284 */
maclobdell 0:f7c60d3e7b8a 285 int mbedtls_pk_encrypt( mbedtls_pk_context *ctx,
maclobdell 0:f7c60d3e7b8a 286 const unsigned char *input, size_t ilen,
maclobdell 0:f7c60d3e7b8a 287 unsigned char *output, size_t *olen, size_t osize,
maclobdell 0:f7c60d3e7b8a 288 int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
maclobdell 0:f7c60d3e7b8a 289 {
maclobdell 0:f7c60d3e7b8a 290 if( ctx == NULL || ctx->pk_info == NULL )
maclobdell 0:f7c60d3e7b8a 291 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 292
maclobdell 0:f7c60d3e7b8a 293 if( ctx->pk_info->encrypt_func == NULL )
maclobdell 0:f7c60d3e7b8a 294 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
maclobdell 0:f7c60d3e7b8a 295
maclobdell 0:f7c60d3e7b8a 296 return( ctx->pk_info->encrypt_func( ctx->pk_ctx, input, ilen,
maclobdell 0:f7c60d3e7b8a 297 output, olen, osize, f_rng, p_rng ) );
maclobdell 0:f7c60d3e7b8a 298 }
maclobdell 0:f7c60d3e7b8a 299
maclobdell 0:f7c60d3e7b8a 300 /*
maclobdell 0:f7c60d3e7b8a 301 * Check public-private key pair
maclobdell 0:f7c60d3e7b8a 302 */
maclobdell 0:f7c60d3e7b8a 303 int mbedtls_pk_check_pair( const mbedtls_pk_context *pub, const mbedtls_pk_context *prv )
maclobdell 0:f7c60d3e7b8a 304 {
maclobdell 0:f7c60d3e7b8a 305 if( pub == NULL || pub->pk_info == NULL ||
maclobdell 0:f7c60d3e7b8a 306 prv == NULL || prv->pk_info == NULL ||
maclobdell 0:f7c60d3e7b8a 307 prv->pk_info->check_pair_func == NULL )
maclobdell 0:f7c60d3e7b8a 308 {
maclobdell 0:f7c60d3e7b8a 309 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 310 }
maclobdell 0:f7c60d3e7b8a 311
maclobdell 0:f7c60d3e7b8a 312 if( prv->pk_info->type == MBEDTLS_PK_RSA_ALT )
maclobdell 0:f7c60d3e7b8a 313 {
maclobdell 0:f7c60d3e7b8a 314 if( pub->pk_info->type != MBEDTLS_PK_RSA )
maclobdell 0:f7c60d3e7b8a 315 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
maclobdell 0:f7c60d3e7b8a 316 }
maclobdell 0:f7c60d3e7b8a 317 else
maclobdell 0:f7c60d3e7b8a 318 {
maclobdell 0:f7c60d3e7b8a 319 if( pub->pk_info != prv->pk_info )
maclobdell 0:f7c60d3e7b8a 320 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
maclobdell 0:f7c60d3e7b8a 321 }
maclobdell 0:f7c60d3e7b8a 322
maclobdell 0:f7c60d3e7b8a 323 return( prv->pk_info->check_pair_func( pub->pk_ctx, prv->pk_ctx ) );
maclobdell 0:f7c60d3e7b8a 324 }
maclobdell 0:f7c60d3e7b8a 325
maclobdell 0:f7c60d3e7b8a 326 /*
maclobdell 0:f7c60d3e7b8a 327 * Get key size in bits
maclobdell 0:f7c60d3e7b8a 328 */
maclobdell 0:f7c60d3e7b8a 329 size_t mbedtls_pk_get_bitlen( const mbedtls_pk_context *ctx )
maclobdell 0:f7c60d3e7b8a 330 {
maclobdell 0:f7c60d3e7b8a 331 if( ctx == NULL || ctx->pk_info == NULL )
maclobdell 0:f7c60d3e7b8a 332 return( 0 );
maclobdell 0:f7c60d3e7b8a 333
maclobdell 0:f7c60d3e7b8a 334 return( ctx->pk_info->get_bitlen( ctx->pk_ctx ) );
maclobdell 0:f7c60d3e7b8a 335 }
maclobdell 0:f7c60d3e7b8a 336
maclobdell 0:f7c60d3e7b8a 337 /*
maclobdell 0:f7c60d3e7b8a 338 * Export debug information
maclobdell 0:f7c60d3e7b8a 339 */
maclobdell 0:f7c60d3e7b8a 340 int mbedtls_pk_debug( const mbedtls_pk_context *ctx, mbedtls_pk_debug_item *items )
maclobdell 0:f7c60d3e7b8a 341 {
maclobdell 0:f7c60d3e7b8a 342 if( ctx == NULL || ctx->pk_info == NULL )
maclobdell 0:f7c60d3e7b8a 343 return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 344
maclobdell 0:f7c60d3e7b8a 345 if( ctx->pk_info->debug_func == NULL )
maclobdell 0:f7c60d3e7b8a 346 return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
maclobdell 0:f7c60d3e7b8a 347
maclobdell 0:f7c60d3e7b8a 348 ctx->pk_info->debug_func( ctx->pk_ctx, items );
maclobdell 0:f7c60d3e7b8a 349 return( 0 );
maclobdell 0:f7c60d3e7b8a 350 }
maclobdell 0:f7c60d3e7b8a 351
maclobdell 0:f7c60d3e7b8a 352 /*
maclobdell 0:f7c60d3e7b8a 353 * Access the PK type name
maclobdell 0:f7c60d3e7b8a 354 */
maclobdell 0:f7c60d3e7b8a 355 const char *mbedtls_pk_get_name( const mbedtls_pk_context *ctx )
maclobdell 0:f7c60d3e7b8a 356 {
maclobdell 0:f7c60d3e7b8a 357 if( ctx == NULL || ctx->pk_info == NULL )
maclobdell 0:f7c60d3e7b8a 358 return( "invalid PK" );
maclobdell 0:f7c60d3e7b8a 359
maclobdell 0:f7c60d3e7b8a 360 return( ctx->pk_info->name );
maclobdell 0:f7c60d3e7b8a 361 }
maclobdell 0:f7c60d3e7b8a 362
maclobdell 0:f7c60d3e7b8a 363 /*
maclobdell 0:f7c60d3e7b8a 364 * Access the PK type
maclobdell 0:f7c60d3e7b8a 365 */
maclobdell 0:f7c60d3e7b8a 366 mbedtls_pk_type_t mbedtls_pk_get_type( const mbedtls_pk_context *ctx )
maclobdell 0:f7c60d3e7b8a 367 {
maclobdell 0:f7c60d3e7b8a 368 if( ctx == NULL || ctx->pk_info == NULL )
maclobdell 0:f7c60d3e7b8a 369 return( MBEDTLS_PK_NONE );
maclobdell 0:f7c60d3e7b8a 370
maclobdell 0:f7c60d3e7b8a 371 return( ctx->pk_info->type );
maclobdell 0:f7c60d3e7b8a 372 }
maclobdell 0:f7c60d3e7b8a 373
maclobdell 0:f7c60d3e7b8a 374 #endif /* MBEDTLS_PK_C */