4 * \brief Wrapper for PKCS#11 library libpkcs11-helper
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6 * \author Adriaan de Jong <dejong@fox-it.com>
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8 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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9 * SPDX-License-Identifier: Apache-2.0
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11 * Licensed under the Apache License, Version 2.0 (the "License"); you may
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12 * not use this file except in compliance with the License.
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13 * You may obtain a copy of the License at
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15 * http://www.apache.org/licenses/LICENSE-2.0
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17 * Unless required by applicable law or agreed to in writing, software
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18 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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19 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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20 * See the License for the specific language governing permissions and
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21 * limitations under the License.
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23 * This file is part of mbed TLS (https://tls.mbed.org)
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26 #include "mbedtls/pkcs11.h"
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28 #if defined(MBEDTLS_PKCS11_C)
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30 #include "mbedtls/md.h"
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31 #include "mbedtls/oid.h"
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32 #include "mbedtls/x509_crt.h"
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34 #if defined(MBEDTLS_PLATFORM_C)
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35 #include "mbedtls/platform.h"
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38 #define mbedtls_calloc calloc
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39 #define mbedtls_free free
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44 void mbedtls_pkcs11_init( mbedtls_pkcs11_context *ctx )
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46 memset( ctx, 0, sizeof( mbedtls_pkcs11_context ) );
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49 int mbedtls_pkcs11_x509_cert_bind( mbedtls_x509_crt *cert, pkcs11h_certificate_t pkcs11_cert )
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52 unsigned char *cert_blob = NULL;
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53 size_t cert_blob_size = 0;
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61 if( pkcs11h_certificate_getCertificateBlob( pkcs11_cert, NULL,
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62 &cert_blob_size ) != CKR_OK )
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68 cert_blob = mbedtls_calloc( 1, cert_blob_size );
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69 if( NULL == cert_blob )
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75 if( pkcs11h_certificate_getCertificateBlob( pkcs11_cert, cert_blob,
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76 &cert_blob_size ) != CKR_OK )
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82 if( 0 != mbedtls_x509_crt_parse( cert, cert_blob, cert_blob_size ) )
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91 if( NULL != cert_blob )
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92 mbedtls_free( cert_blob );
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98 int mbedtls_pkcs11_priv_key_bind( mbedtls_pkcs11_context *priv_key,
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99 pkcs11h_certificate_t pkcs11_cert )
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102 mbedtls_x509_crt cert;
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104 mbedtls_x509_crt_init( &cert );
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106 if( priv_key == NULL )
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109 if( 0 != mbedtls_pkcs11_x509_cert_bind( &cert, pkcs11_cert ) )
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112 priv_key->len = mbedtls_pk_get_len( &cert.pk );
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113 priv_key->pkcs11h_cert = pkcs11_cert;
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118 mbedtls_x509_crt_free( &cert );
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123 void mbedtls_pkcs11_priv_key_free( mbedtls_pkcs11_context *priv_key )
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125 if( NULL != priv_key )
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126 pkcs11h_certificate_freeCertificate( priv_key->pkcs11h_cert );
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129 int mbedtls_pkcs11_decrypt( mbedtls_pkcs11_context *ctx,
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130 int mode, size_t *olen,
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131 const unsigned char *input,
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132 unsigned char *output,
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133 size_t output_max_len )
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135 size_t input_len, output_len;
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138 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
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140 if( MBEDTLS_RSA_PRIVATE != mode )
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141 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
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143 output_len = input_len = ctx->len;
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145 if( input_len < 16 || input_len > output_max_len )
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146 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
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148 /* Determine size of output buffer */
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149 if( pkcs11h_certificate_decryptAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, input,
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150 input_len, NULL, &output_len ) != CKR_OK )
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152 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
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155 if( output_len > output_max_len )
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156 return( MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE );
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158 if( pkcs11h_certificate_decryptAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, input,
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159 input_len, output, &output_len ) != CKR_OK )
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161 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
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163 *olen = output_len;
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167 int mbedtls_pkcs11_sign( mbedtls_pkcs11_context *ctx,
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169 mbedtls_md_type_t md_alg,
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170 unsigned int hashlen,
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171 const unsigned char *hash,
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172 unsigned char *sig )
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174 size_t sig_len = 0, asn_len = 0, oid_size = 0;
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175 unsigned char *p = sig;
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179 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
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181 if( MBEDTLS_RSA_PRIVATE != mode )
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182 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
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184 if( md_alg != MBEDTLS_MD_NONE )
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186 const mbedtls_md_info_t *md_info = mbedtls_md_info_from_type( md_alg );
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187 if( md_info == NULL )
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188 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
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190 if( mbedtls_oid_get_oid_by_md( md_alg, &oid, &oid_size ) != 0 )
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191 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
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193 hashlen = mbedtls_md_get_size( md_info );
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194 asn_len = 10 + oid_size;
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197 sig_len = ctx->len;
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198 if( hashlen > sig_len || asn_len > sig_len ||
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199 hashlen + asn_len > sig_len )
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201 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
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204 if( md_alg != MBEDTLS_MD_NONE )
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207 * DigestInfo ::= SEQUENCE {
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208 * digestAlgorithm DigestAlgorithmIdentifier,
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211 * DigestAlgorithmIdentifier ::= AlgorithmIdentifier
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213 * Digest ::= OCTET STRING
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215 *p++ = MBEDTLS_ASN1_SEQUENCE | MBEDTLS_ASN1_CONSTRUCTED;
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216 *p++ = (unsigned char) ( 0x08 + oid_size + hashlen );
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217 *p++ = MBEDTLS_ASN1_SEQUENCE | MBEDTLS_ASN1_CONSTRUCTED;
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218 *p++ = (unsigned char) ( 0x04 + oid_size );
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219 *p++ = MBEDTLS_ASN1_OID;
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220 *p++ = oid_size & 0xFF;
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221 memcpy( p, oid, oid_size );
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223 *p++ = MBEDTLS_ASN1_NULL;
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225 *p++ = MBEDTLS_ASN1_OCTET_STRING;
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229 memcpy( p, hash, hashlen );
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231 if( pkcs11h_certificate_signAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, sig,
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232 asn_len + hashlen, sig, &sig_len ) != CKR_OK )
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234 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
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240 #endif /* defined(MBEDTLS_PKCS11_C) */
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