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Dependents:   mbed-TFT-example-NCS36510 mbed-Accelerometer-example-NCS36510 mbed-Accelerometer-example-NCS36510

features/mbedtls/src/pkcs11.c@0:098463de4c5d, 2017-01-25 (annotated)

Committer:
group-onsemi
Date:
Wed Jan 25 20:34:15 2017 +0000
Revision:
0:098463de4c5d
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
group-onsemi 0:098463de4c5d 1 /**
group-onsemi 0:098463de4c5d 2 * \file pkcs11.c
group-onsemi 0:098463de4c5d 3 *
group-onsemi 0:098463de4c5d 4 * \brief Wrapper for PKCS#11 library libpkcs11-helper
group-onsemi 0:098463de4c5d 5 *
group-onsemi 0:098463de4c5d 6 * \author Adriaan de Jong <dejong@fox-it.com>
group-onsemi 0:098463de4c5d 7 *
group-onsemi 0:098463de4c5d 8 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
group-onsemi 0:098463de4c5d 9 * SPDX-License-Identifier: Apache-2.0
group-onsemi 0:098463de4c5d 10 *
group-onsemi 0:098463de4c5d 11 * Licensed under the Apache License, Version 2.0 (the "License"); you may
group-onsemi 0:098463de4c5d 12 * not use this file except in compliance with the License.
group-onsemi 0:098463de4c5d 13 * You may obtain a copy of the License at
group-onsemi 0:098463de4c5d 14 *
group-onsemi 0:098463de4c5d 15 * http://www.apache.org/licenses/LICENSE-2.0
group-onsemi 0:098463de4c5d 16 *
group-onsemi 0:098463de4c5d 17 * Unless required by applicable law or agreed to in writing, software
group-onsemi 0:098463de4c5d 18 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
group-onsemi 0:098463de4c5d 19 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
group-onsemi 0:098463de4c5d 20 * See the License for the specific language governing permissions and
group-onsemi 0:098463de4c5d 21 * limitations under the License.
group-onsemi 0:098463de4c5d 22 *
group-onsemi 0:098463de4c5d 23 * This file is part of mbed TLS (https://tls.mbed.org)
group-onsemi 0:098463de4c5d 24 */
group-onsemi 0:098463de4c5d 25
group-onsemi 0:098463de4c5d 26 #include "mbedtls/pkcs11.h"
group-onsemi 0:098463de4c5d 27
group-onsemi 0:098463de4c5d 28 #if defined(MBEDTLS_PKCS11_C)
group-onsemi 0:098463de4c5d 29
group-onsemi 0:098463de4c5d 30 #include "mbedtls/md.h"
group-onsemi 0:098463de4c5d 31 #include "mbedtls/oid.h"
group-onsemi 0:098463de4c5d 32 #include "mbedtls/x509_crt.h"
group-onsemi 0:098463de4c5d 33
group-onsemi 0:098463de4c5d 34 #if defined(MBEDTLS_PLATFORM_C)
group-onsemi 0:098463de4c5d 35 #include "mbedtls/platform.h"
group-onsemi 0:098463de4c5d 36 #else
group-onsemi 0:098463de4c5d 37 #include <stdlib.h>
group-onsemi 0:098463de4c5d 38 #define mbedtls_calloc calloc
group-onsemi 0:098463de4c5d 39 #define mbedtls_free free
group-onsemi 0:098463de4c5d 40 #endif
group-onsemi 0:098463de4c5d 41
group-onsemi 0:098463de4c5d 42 #include <string.h>
group-onsemi 0:098463de4c5d 43
group-onsemi 0:098463de4c5d 44 void mbedtls_pkcs11_init( mbedtls_pkcs11_context *ctx )
group-onsemi 0:098463de4c5d 45 {
group-onsemi 0:098463de4c5d 46 memset( ctx, 0, sizeof( mbedtls_pkcs11_context ) );
group-onsemi 0:098463de4c5d 47 }
group-onsemi 0:098463de4c5d 48
group-onsemi 0:098463de4c5d 49 int mbedtls_pkcs11_x509_cert_bind( mbedtls_x509_crt *cert, pkcs11h_certificate_t pkcs11_cert )
group-onsemi 0:098463de4c5d 50 {
group-onsemi 0:098463de4c5d 51 int ret = 1;
group-onsemi 0:098463de4c5d 52 unsigned char *cert_blob = NULL;
group-onsemi 0:098463de4c5d 53 size_t cert_blob_size = 0;
group-onsemi 0:098463de4c5d 54
group-onsemi 0:098463de4c5d 55 if( cert == NULL )
group-onsemi 0:098463de4c5d 56 {
group-onsemi 0:098463de4c5d 57 ret = 2;
group-onsemi 0:098463de4c5d 58 goto cleanup;
group-onsemi 0:098463de4c5d 59 }
group-onsemi 0:098463de4c5d 60
group-onsemi 0:098463de4c5d 61 if( pkcs11h_certificate_getCertificateBlob( pkcs11_cert, NULL,
group-onsemi 0:098463de4c5d 62 &cert_blob_size ) != CKR_OK )
group-onsemi 0:098463de4c5d 63 {
group-onsemi 0:098463de4c5d 64 ret = 3;
group-onsemi 0:098463de4c5d 65 goto cleanup;
group-onsemi 0:098463de4c5d 66 }
group-onsemi 0:098463de4c5d 67
group-onsemi 0:098463de4c5d 68 cert_blob = mbedtls_calloc( 1, cert_blob_size );
group-onsemi 0:098463de4c5d 69 if( NULL == cert_blob )
group-onsemi 0:098463de4c5d 70 {
group-onsemi 0:098463de4c5d 71 ret = 4;
group-onsemi 0:098463de4c5d 72 goto cleanup;
group-onsemi 0:098463de4c5d 73 }
group-onsemi 0:098463de4c5d 74
group-onsemi 0:098463de4c5d 75 if( pkcs11h_certificate_getCertificateBlob( pkcs11_cert, cert_blob,
group-onsemi 0:098463de4c5d 76 &cert_blob_size ) != CKR_OK )
group-onsemi 0:098463de4c5d 77 {
group-onsemi 0:098463de4c5d 78 ret = 5;
group-onsemi 0:098463de4c5d 79 goto cleanup;
group-onsemi 0:098463de4c5d 80 }
group-onsemi 0:098463de4c5d 81
group-onsemi 0:098463de4c5d 82 if( 0 != mbedtls_x509_crt_parse( cert, cert_blob, cert_blob_size ) )
group-onsemi 0:098463de4c5d 83 {
group-onsemi 0:098463de4c5d 84 ret = 6;
group-onsemi 0:098463de4c5d 85 goto cleanup;
group-onsemi 0:098463de4c5d 86 }
group-onsemi 0:098463de4c5d 87
group-onsemi 0:098463de4c5d 88 ret = 0;
group-onsemi 0:098463de4c5d 89
group-onsemi 0:098463de4c5d 90 cleanup:
group-onsemi 0:098463de4c5d 91 if( NULL != cert_blob )
group-onsemi 0:098463de4c5d 92 mbedtls_free( cert_blob );
group-onsemi 0:098463de4c5d 93
group-onsemi 0:098463de4c5d 94 return( ret );
group-onsemi 0:098463de4c5d 95 }
group-onsemi 0:098463de4c5d 96
group-onsemi 0:098463de4c5d 97
group-onsemi 0:098463de4c5d 98 int mbedtls_pkcs11_priv_key_bind( mbedtls_pkcs11_context *priv_key,
group-onsemi 0:098463de4c5d 99 pkcs11h_certificate_t pkcs11_cert )
group-onsemi 0:098463de4c5d 100 {
group-onsemi 0:098463de4c5d 101 int ret = 1;
group-onsemi 0:098463de4c5d 102 mbedtls_x509_crt cert;
group-onsemi 0:098463de4c5d 103
group-onsemi 0:098463de4c5d 104 mbedtls_x509_crt_init( &cert );
group-onsemi 0:098463de4c5d 105
group-onsemi 0:098463de4c5d 106 if( priv_key == NULL )
group-onsemi 0:098463de4c5d 107 goto cleanup;
group-onsemi 0:098463de4c5d 108
group-onsemi 0:098463de4c5d 109 if( 0 != mbedtls_pkcs11_x509_cert_bind( &cert, pkcs11_cert ) )
group-onsemi 0:098463de4c5d 110 goto cleanup;
group-onsemi 0:098463de4c5d 111
group-onsemi 0:098463de4c5d 112 priv_key->len = mbedtls_pk_get_len( &cert.pk );
group-onsemi 0:098463de4c5d 113 priv_key->pkcs11h_cert = pkcs11_cert;
group-onsemi 0:098463de4c5d 114
group-onsemi 0:098463de4c5d 115 ret = 0;
group-onsemi 0:098463de4c5d 116
group-onsemi 0:098463de4c5d 117 cleanup:
group-onsemi 0:098463de4c5d 118 mbedtls_x509_crt_free( &cert );
group-onsemi 0:098463de4c5d 119
group-onsemi 0:098463de4c5d 120 return( ret );
group-onsemi 0:098463de4c5d 121 }
group-onsemi 0:098463de4c5d 122
group-onsemi 0:098463de4c5d 123 void mbedtls_pkcs11_priv_key_free( mbedtls_pkcs11_context *priv_key )
group-onsemi 0:098463de4c5d 124 {
group-onsemi 0:098463de4c5d 125 if( NULL != priv_key )
group-onsemi 0:098463de4c5d 126 pkcs11h_certificate_freeCertificate( priv_key->pkcs11h_cert );
group-onsemi 0:098463de4c5d 127 }
group-onsemi 0:098463de4c5d 128
group-onsemi 0:098463de4c5d 129 int mbedtls_pkcs11_decrypt( mbedtls_pkcs11_context *ctx,
group-onsemi 0:098463de4c5d 130 int mode, size_t *olen,
group-onsemi 0:098463de4c5d 131 const unsigned char *input,
group-onsemi 0:098463de4c5d 132 unsigned char *output,
group-onsemi 0:098463de4c5d 133 size_t output_max_len )
group-onsemi 0:098463de4c5d 134 {
group-onsemi 0:098463de4c5d 135 size_t input_len, output_len;
group-onsemi 0:098463de4c5d 136
group-onsemi 0:098463de4c5d 137 if( NULL == ctx )
group-onsemi 0:098463de4c5d 138 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 139
group-onsemi 0:098463de4c5d 140 if( MBEDTLS_RSA_PRIVATE != mode )
group-onsemi 0:098463de4c5d 141 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 142
group-onsemi 0:098463de4c5d 143 output_len = input_len = ctx->len;
group-onsemi 0:098463de4c5d 144
group-onsemi 0:098463de4c5d 145 if( input_len < 16 || input_len > output_max_len )
group-onsemi 0:098463de4c5d 146 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 147
group-onsemi 0:098463de4c5d 148 /* Determine size of output buffer */
group-onsemi 0:098463de4c5d 149 if( pkcs11h_certificate_decryptAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, input,
group-onsemi 0:098463de4c5d 150 input_len, NULL, &output_len ) != CKR_OK )
group-onsemi 0:098463de4c5d 151 {
group-onsemi 0:098463de4c5d 152 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 153 }
group-onsemi 0:098463de4c5d 154
group-onsemi 0:098463de4c5d 155 if( output_len > output_max_len )
group-onsemi 0:098463de4c5d 156 return( MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE );
group-onsemi 0:098463de4c5d 157
group-onsemi 0:098463de4c5d 158 if( pkcs11h_certificate_decryptAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, input,
group-onsemi 0:098463de4c5d 159 input_len, output, &output_len ) != CKR_OK )
group-onsemi 0:098463de4c5d 160 {
group-onsemi 0:098463de4c5d 161 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 162 }
group-onsemi 0:098463de4c5d 163 *olen = output_len;
group-onsemi 0:098463de4c5d 164 return( 0 );
group-onsemi 0:098463de4c5d 165 }
group-onsemi 0:098463de4c5d 166
group-onsemi 0:098463de4c5d 167 int mbedtls_pkcs11_sign( mbedtls_pkcs11_context *ctx,
group-onsemi 0:098463de4c5d 168 int mode,
group-onsemi 0:098463de4c5d 169 mbedtls_md_type_t md_alg,
group-onsemi 0:098463de4c5d 170 unsigned int hashlen,
group-onsemi 0:098463de4c5d 171 const unsigned char *hash,
group-onsemi 0:098463de4c5d 172 unsigned char *sig )
group-onsemi 0:098463de4c5d 173 {
group-onsemi 0:098463de4c5d 174 size_t sig_len = 0, asn_len = 0, oid_size = 0;
group-onsemi 0:098463de4c5d 175 unsigned char *p = sig;
group-onsemi 0:098463de4c5d 176 const char *oid;
group-onsemi 0:098463de4c5d 177
group-onsemi 0:098463de4c5d 178 if( NULL == ctx )
group-onsemi 0:098463de4c5d 179 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 180
group-onsemi 0:098463de4c5d 181 if( MBEDTLS_RSA_PRIVATE != mode )
group-onsemi 0:098463de4c5d 182 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 183
group-onsemi 0:098463de4c5d 184 if( md_alg != MBEDTLS_MD_NONE )
group-onsemi 0:098463de4c5d 185 {
group-onsemi 0:098463de4c5d 186 const mbedtls_md_info_t *md_info = mbedtls_md_info_from_type( md_alg );
group-onsemi 0:098463de4c5d 187 if( md_info == NULL )
group-onsemi 0:098463de4c5d 188 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 189
group-onsemi 0:098463de4c5d 190 if( mbedtls_oid_get_oid_by_md( md_alg, &oid, &oid_size ) != 0 )
group-onsemi 0:098463de4c5d 191 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 192
group-onsemi 0:098463de4c5d 193 hashlen = mbedtls_md_get_size( md_info );
group-onsemi 0:098463de4c5d 194 asn_len = 10 + oid_size;
group-onsemi 0:098463de4c5d 195 }
group-onsemi 0:098463de4c5d 196
group-onsemi 0:098463de4c5d 197 sig_len = ctx->len;
group-onsemi 0:098463de4c5d 198 if( hashlen > sig_len || asn_len > sig_len ||
group-onsemi 0:098463de4c5d 199 hashlen + asn_len > sig_len )
group-onsemi 0:098463de4c5d 200 {
group-onsemi 0:098463de4c5d 201 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 202 }
group-onsemi 0:098463de4c5d 203
group-onsemi 0:098463de4c5d 204 if( md_alg != MBEDTLS_MD_NONE )
group-onsemi 0:098463de4c5d 205 {
group-onsemi 0:098463de4c5d 206 /*
group-onsemi 0:098463de4c5d 207 * DigestInfo ::= SEQUENCE {
group-onsemi 0:098463de4c5d 208 * digestAlgorithm DigestAlgorithmIdentifier,
group-onsemi 0:098463de4c5d 209 * digest Digest }
group-onsemi 0:098463de4c5d 210 *
group-onsemi 0:098463de4c5d 211 * DigestAlgorithmIdentifier ::= AlgorithmIdentifier
group-onsemi 0:098463de4c5d 212 *
group-onsemi 0:098463de4c5d 213 * Digest ::= OCTET STRING
group-onsemi 0:098463de4c5d 214 */
group-onsemi 0:098463de4c5d 215 *p++ = MBEDTLS_ASN1_SEQUENCE | MBEDTLS_ASN1_CONSTRUCTED;
group-onsemi 0:098463de4c5d 216 *p++ = (unsigned char) ( 0x08 + oid_size + hashlen );
group-onsemi 0:098463de4c5d 217 *p++ = MBEDTLS_ASN1_SEQUENCE | MBEDTLS_ASN1_CONSTRUCTED;
group-onsemi 0:098463de4c5d 218 *p++ = (unsigned char) ( 0x04 + oid_size );
group-onsemi 0:098463de4c5d 219 *p++ = MBEDTLS_ASN1_OID;
group-onsemi 0:098463de4c5d 220 *p++ = oid_size & 0xFF;
group-onsemi 0:098463de4c5d 221 memcpy( p, oid, oid_size );
group-onsemi 0:098463de4c5d 222 p += oid_size;
group-onsemi 0:098463de4c5d 223 *p++ = MBEDTLS_ASN1_NULL;
group-onsemi 0:098463de4c5d 224 *p++ = 0x00;
group-onsemi 0:098463de4c5d 225 *p++ = MBEDTLS_ASN1_OCTET_STRING;
group-onsemi 0:098463de4c5d 226 *p++ = hashlen;
group-onsemi 0:098463de4c5d 227 }
group-onsemi 0:098463de4c5d 228
group-onsemi 0:098463de4c5d 229 memcpy( p, hash, hashlen );
group-onsemi 0:098463de4c5d 230
group-onsemi 0:098463de4c5d 231 if( pkcs11h_certificate_signAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, sig,
group-onsemi 0:098463de4c5d 232 asn_len + hashlen, sig, &sig_len ) != CKR_OK )
group-onsemi 0:098463de4c5d 233 {
group-onsemi 0:098463de4c5d 234 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 235 }
group-onsemi 0:098463de4c5d 236
group-onsemi 0:098463de4c5d 237 return( 0 );
group-onsemi 0:098463de4c5d 238 }
group-onsemi 0:098463de4c5d 239
group-onsemi 0:098463de4c5d 240 #endif /* defined(MBEDTLS_PKCS11_C) */