Austin Blackstone / Mbed 2 deprecated client-lwip-lightswitch-demo-expanded

mbed client lightswitch demo

Dependencies:   mbed Socket lwip-eth lwip-sys lwip

Fork of mbed-client-classic-example-lwip by Austin Blackstone

mbedtls/source/pkcs11.c@11:cada08fc8a70, 2016-06-09 (annotated)

Committer:
mbedAustin
Date:
Thu Jun 09 17:08:36 2016 +0000
Revision:
11:cada08fc8a70
Commit for public Consumption

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbedAustin 11:cada08fc8a70 1 /**
mbedAustin 11:cada08fc8a70 2 * \file pkcs11.c
mbedAustin 11:cada08fc8a70 3 *
mbedAustin 11:cada08fc8a70 4 * \brief Wrapper for PKCS#11 library libpkcs11-helper
mbedAustin 11:cada08fc8a70 5 *
mbedAustin 11:cada08fc8a70 6 * \author Adriaan de Jong <dejong@fox-it.com>
mbedAustin 11:cada08fc8a70 7 *
mbedAustin 11:cada08fc8a70 8 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
mbedAustin 11:cada08fc8a70 9 * SPDX-License-Identifier: Apache-2.0
mbedAustin 11:cada08fc8a70 10 *
mbedAustin 11:cada08fc8a70 11 * Licensed under the Apache License, Version 2.0 (the "License"); you may
mbedAustin 11:cada08fc8a70 12 * not use this file except in compliance with the License.
mbedAustin 11:cada08fc8a70 13 * You may obtain a copy of the License at
mbedAustin 11:cada08fc8a70 14 *
mbedAustin 11:cada08fc8a70 15 * http://www.apache.org/licenses/LICENSE-2.0
mbedAustin 11:cada08fc8a70 16 *
mbedAustin 11:cada08fc8a70 17 * Unless required by applicable law or agreed to in writing, software
mbedAustin 11:cada08fc8a70 18 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
mbedAustin 11:cada08fc8a70 19 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbedAustin 11:cada08fc8a70 20 * See the License for the specific language governing permissions and
mbedAustin 11:cada08fc8a70 21 * limitations under the License.
mbedAustin 11:cada08fc8a70 22 *
mbedAustin 11:cada08fc8a70 23 * This file is part of mbed TLS (https://tls.mbed.org)
mbedAustin 11:cada08fc8a70 24 */
mbedAustin 11:cada08fc8a70 25
mbedAustin 11:cada08fc8a70 26 #include "mbedtls/pkcs11.h"
mbedAustin 11:cada08fc8a70 27
mbedAustin 11:cada08fc8a70 28 #if defined(MBEDTLS_PKCS11_C)
mbedAustin 11:cada08fc8a70 29
mbedAustin 11:cada08fc8a70 30 #include "mbedtls/md.h"
mbedAustin 11:cada08fc8a70 31 #include "mbedtls/oid.h"
mbedAustin 11:cada08fc8a70 32 #include "mbedtls/x509_crt.h"
mbedAustin 11:cada08fc8a70 33
mbedAustin 11:cada08fc8a70 34 #if defined(MBEDTLS_PLATFORM_C)
mbedAustin 11:cada08fc8a70 35 #include "mbedtls/platform.h"
mbedAustin 11:cada08fc8a70 36 #else
mbedAustin 11:cada08fc8a70 37 #include <stdlib.h>
mbedAustin 11:cada08fc8a70 38 #define mbedtls_calloc calloc
mbedAustin 11:cada08fc8a70 39 #define mbedtls_free free
mbedAustin 11:cada08fc8a70 40 #endif
mbedAustin 11:cada08fc8a70 41
mbedAustin 11:cada08fc8a70 42 #include <string.h>
mbedAustin 11:cada08fc8a70 43
mbedAustin 11:cada08fc8a70 44 void mbedtls_pkcs11_init( mbedtls_pkcs11_context *ctx )
mbedAustin 11:cada08fc8a70 45 {
mbedAustin 11:cada08fc8a70 46 memset( ctx, 0, sizeof( mbedtls_pkcs11_context ) );
mbedAustin 11:cada08fc8a70 47 }
mbedAustin 11:cada08fc8a70 48
mbedAustin 11:cada08fc8a70 49 int mbedtls_pkcs11_x509_cert_bind( mbedtls_x509_crt *cert, pkcs11h_certificate_t pkcs11_cert )
mbedAustin 11:cada08fc8a70 50 {
mbedAustin 11:cada08fc8a70 51 int ret = 1;
mbedAustin 11:cada08fc8a70 52 unsigned char *cert_blob = NULL;
mbedAustin 11:cada08fc8a70 53 size_t cert_blob_size = 0;
mbedAustin 11:cada08fc8a70 54
mbedAustin 11:cada08fc8a70 55 if( cert == NULL )
mbedAustin 11:cada08fc8a70 56 {
mbedAustin 11:cada08fc8a70 57 ret = 2;
mbedAustin 11:cada08fc8a70 58 goto cleanup;
mbedAustin 11:cada08fc8a70 59 }
mbedAustin 11:cada08fc8a70 60
mbedAustin 11:cada08fc8a70 61 if( pkcs11h_certificate_getCertificateBlob( pkcs11_cert, NULL,
mbedAustin 11:cada08fc8a70 62 &cert_blob_size ) != CKR_OK )
mbedAustin 11:cada08fc8a70 63 {
mbedAustin 11:cada08fc8a70 64 ret = 3;
mbedAustin 11:cada08fc8a70 65 goto cleanup;
mbedAustin 11:cada08fc8a70 66 }
mbedAustin 11:cada08fc8a70 67
mbedAustin 11:cada08fc8a70 68 cert_blob = mbedtls_calloc( 1, cert_blob_size );
mbedAustin 11:cada08fc8a70 69 if( NULL == cert_blob )
mbedAustin 11:cada08fc8a70 70 {
mbedAustin 11:cada08fc8a70 71 ret = 4;
mbedAustin 11:cada08fc8a70 72 goto cleanup;
mbedAustin 11:cada08fc8a70 73 }
mbedAustin 11:cada08fc8a70 74
mbedAustin 11:cada08fc8a70 75 if( pkcs11h_certificate_getCertificateBlob( pkcs11_cert, cert_blob,
mbedAustin 11:cada08fc8a70 76 &cert_blob_size ) != CKR_OK )
mbedAustin 11:cada08fc8a70 77 {
mbedAustin 11:cada08fc8a70 78 ret = 5;
mbedAustin 11:cada08fc8a70 79 goto cleanup;
mbedAustin 11:cada08fc8a70 80 }
mbedAustin 11:cada08fc8a70 81
mbedAustin 11:cada08fc8a70 82 if( 0 != mbedtls_x509_crt_parse( cert, cert_blob, cert_blob_size ) )
mbedAustin 11:cada08fc8a70 83 {
mbedAustin 11:cada08fc8a70 84 ret = 6;
mbedAustin 11:cada08fc8a70 85 goto cleanup;
mbedAustin 11:cada08fc8a70 86 }
mbedAustin 11:cada08fc8a70 87
mbedAustin 11:cada08fc8a70 88 ret = 0;
mbedAustin 11:cada08fc8a70 89
mbedAustin 11:cada08fc8a70 90 cleanup:
mbedAustin 11:cada08fc8a70 91 if( NULL != cert_blob )
mbedAustin 11:cada08fc8a70 92 mbedtls_free( cert_blob );
mbedAustin 11:cada08fc8a70 93
mbedAustin 11:cada08fc8a70 94 return( ret );
mbedAustin 11:cada08fc8a70 95 }
mbedAustin 11:cada08fc8a70 96
mbedAustin 11:cada08fc8a70 97
mbedAustin 11:cada08fc8a70 98 int mbedtls_pkcs11_priv_key_bind( mbedtls_pkcs11_context *priv_key,
mbedAustin 11:cada08fc8a70 99 pkcs11h_certificate_t pkcs11_cert )
mbedAustin 11:cada08fc8a70 100 {
mbedAustin 11:cada08fc8a70 101 int ret = 1;
mbedAustin 11:cada08fc8a70 102 mbedtls_x509_crt cert;
mbedAustin 11:cada08fc8a70 103
mbedAustin 11:cada08fc8a70 104 mbedtls_x509_crt_init( &cert );
mbedAustin 11:cada08fc8a70 105
mbedAustin 11:cada08fc8a70 106 if( priv_key == NULL )
mbedAustin 11:cada08fc8a70 107 goto cleanup;
mbedAustin 11:cada08fc8a70 108
mbedAustin 11:cada08fc8a70 109 if( 0 != mbedtls_pkcs11_x509_cert_bind( &cert, pkcs11_cert ) )
mbedAustin 11:cada08fc8a70 110 goto cleanup;
mbedAustin 11:cada08fc8a70 111
mbedAustin 11:cada08fc8a70 112 priv_key->len = mbedtls_pk_get_len( &cert.pk );
mbedAustin 11:cada08fc8a70 113 priv_key->pkcs11h_cert = pkcs11_cert;
mbedAustin 11:cada08fc8a70 114
mbedAustin 11:cada08fc8a70 115 ret = 0;
mbedAustin 11:cada08fc8a70 116
mbedAustin 11:cada08fc8a70 117 cleanup:
mbedAustin 11:cada08fc8a70 118 mbedtls_x509_crt_free( &cert );
mbedAustin 11:cada08fc8a70 119
mbedAustin 11:cada08fc8a70 120 return( ret );
mbedAustin 11:cada08fc8a70 121 }
mbedAustin 11:cada08fc8a70 122
mbedAustin 11:cada08fc8a70 123 void mbedtls_pkcs11_priv_key_free( mbedtls_pkcs11_context *priv_key )
mbedAustin 11:cada08fc8a70 124 {
mbedAustin 11:cada08fc8a70 125 if( NULL != priv_key )
mbedAustin 11:cada08fc8a70 126 pkcs11h_certificate_freeCertificate( priv_key->pkcs11h_cert );
mbedAustin 11:cada08fc8a70 127 }
mbedAustin 11:cada08fc8a70 128
mbedAustin 11:cada08fc8a70 129 int mbedtls_pkcs11_decrypt( mbedtls_pkcs11_context *ctx,
mbedAustin 11:cada08fc8a70 130 int mode, size_t *olen,
mbedAustin 11:cada08fc8a70 131 const unsigned char *input,
mbedAustin 11:cada08fc8a70 132 unsigned char *output,
mbedAustin 11:cada08fc8a70 133 size_t output_max_len )
mbedAustin 11:cada08fc8a70 134 {
mbedAustin 11:cada08fc8a70 135 size_t input_len, output_len;
mbedAustin 11:cada08fc8a70 136
mbedAustin 11:cada08fc8a70 137 if( NULL == ctx )
mbedAustin 11:cada08fc8a70 138 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
mbedAustin 11:cada08fc8a70 139
mbedAustin 11:cada08fc8a70 140 if( MBEDTLS_RSA_PRIVATE != mode )
mbedAustin 11:cada08fc8a70 141 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
mbedAustin 11:cada08fc8a70 142
mbedAustin 11:cada08fc8a70 143 output_len = input_len = ctx->len;
mbedAustin 11:cada08fc8a70 144
mbedAustin 11:cada08fc8a70 145 if( input_len < 16 || input_len > output_max_len )
mbedAustin 11:cada08fc8a70 146 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
mbedAustin 11:cada08fc8a70 147
mbedAustin 11:cada08fc8a70 148 /* Determine size of output buffer */
mbedAustin 11:cada08fc8a70 149 if( pkcs11h_certificate_decryptAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, input,
mbedAustin 11:cada08fc8a70 150 input_len, NULL, &output_len ) != CKR_OK )
mbedAustin 11:cada08fc8a70 151 {
mbedAustin 11:cada08fc8a70 152 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
mbedAustin 11:cada08fc8a70 153 }
mbedAustin 11:cada08fc8a70 154
mbedAustin 11:cada08fc8a70 155 if( output_len > output_max_len )
mbedAustin 11:cada08fc8a70 156 return( MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE );
mbedAustin 11:cada08fc8a70 157
mbedAustin 11:cada08fc8a70 158 if( pkcs11h_certificate_decryptAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, input,
mbedAustin 11:cada08fc8a70 159 input_len, output, &output_len ) != CKR_OK )
mbedAustin 11:cada08fc8a70 160 {
mbedAustin 11:cada08fc8a70 161 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
mbedAustin 11:cada08fc8a70 162 }
mbedAustin 11:cada08fc8a70 163 *olen = output_len;
mbedAustin 11:cada08fc8a70 164 return( 0 );
mbedAustin 11:cada08fc8a70 165 }
mbedAustin 11:cada08fc8a70 166
mbedAustin 11:cada08fc8a70 167 int mbedtls_pkcs11_sign( mbedtls_pkcs11_context *ctx,
mbedAustin 11:cada08fc8a70 168 int mode,
mbedAustin 11:cada08fc8a70 169 mbedtls_md_type_t md_alg,
mbedAustin 11:cada08fc8a70 170 unsigned int hashlen,
mbedAustin 11:cada08fc8a70 171 const unsigned char *hash,
mbedAustin 11:cada08fc8a70 172 unsigned char *sig )
mbedAustin 11:cada08fc8a70 173 {
mbedAustin 11:cada08fc8a70 174 size_t sig_len = 0, asn_len = 0, oid_size = 0;
mbedAustin 11:cada08fc8a70 175 unsigned char *p = sig;
mbedAustin 11:cada08fc8a70 176 const char *oid;
mbedAustin 11:cada08fc8a70 177
mbedAustin 11:cada08fc8a70 178 if( NULL == ctx )
mbedAustin 11:cada08fc8a70 179 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
mbedAustin 11:cada08fc8a70 180
mbedAustin 11:cada08fc8a70 181 if( MBEDTLS_RSA_PRIVATE != mode )
mbedAustin 11:cada08fc8a70 182 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
mbedAustin 11:cada08fc8a70 183
mbedAustin 11:cada08fc8a70 184 if( md_alg != MBEDTLS_MD_NONE )
mbedAustin 11:cada08fc8a70 185 {
mbedAustin 11:cada08fc8a70 186 const mbedtls_md_info_t *md_info = mbedtls_md_info_from_type( md_alg );
mbedAustin 11:cada08fc8a70 187 if( md_info == NULL )
mbedAustin 11:cada08fc8a70 188 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
mbedAustin 11:cada08fc8a70 189
mbedAustin 11:cada08fc8a70 190 if( mbedtls_oid_get_oid_by_md( md_alg, &oid, &oid_size ) != 0 )
mbedAustin 11:cada08fc8a70 191 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
mbedAustin 11:cada08fc8a70 192
mbedAustin 11:cada08fc8a70 193 hashlen = mbedtls_md_get_size( md_info );
mbedAustin 11:cada08fc8a70 194 asn_len = 10 + oid_size;
mbedAustin 11:cada08fc8a70 195 }
mbedAustin 11:cada08fc8a70 196
mbedAustin 11:cada08fc8a70 197 sig_len = ctx->len;
mbedAustin 11:cada08fc8a70 198 if( hashlen > sig_len || asn_len > sig_len ||
mbedAustin 11:cada08fc8a70 199 hashlen + asn_len > sig_len )
mbedAustin 11:cada08fc8a70 200 {
mbedAustin 11:cada08fc8a70 201 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
mbedAustin 11:cada08fc8a70 202 }
mbedAustin 11:cada08fc8a70 203
mbedAustin 11:cada08fc8a70 204 if( md_alg != MBEDTLS_MD_NONE )
mbedAustin 11:cada08fc8a70 205 {
mbedAustin 11:cada08fc8a70 206 /*
mbedAustin 11:cada08fc8a70 207 * DigestInfo ::= SEQUENCE {
mbedAustin 11:cada08fc8a70 208 * digestAlgorithm DigestAlgorithmIdentifier,
mbedAustin 11:cada08fc8a70 209 * digest Digest }
mbedAustin 11:cada08fc8a70 210 *
mbedAustin 11:cada08fc8a70 211 * DigestAlgorithmIdentifier ::= AlgorithmIdentifier
mbedAustin 11:cada08fc8a70 212 *
mbedAustin 11:cada08fc8a70 213 * Digest ::= OCTET STRING
mbedAustin 11:cada08fc8a70 214 */
mbedAustin 11:cada08fc8a70 215 *p++ = MBEDTLS_ASN1_SEQUENCE | MBEDTLS_ASN1_CONSTRUCTED;
mbedAustin 11:cada08fc8a70 216 *p++ = (unsigned char) ( 0x08 + oid_size + hashlen );
mbedAustin 11:cada08fc8a70 217 *p++ = MBEDTLS_ASN1_SEQUENCE | MBEDTLS_ASN1_CONSTRUCTED;
mbedAustin 11:cada08fc8a70 218 *p++ = (unsigned char) ( 0x04 + oid_size );
mbedAustin 11:cada08fc8a70 219 *p++ = MBEDTLS_ASN1_OID;
mbedAustin 11:cada08fc8a70 220 *p++ = oid_size & 0xFF;
mbedAustin 11:cada08fc8a70 221 memcpy( p, oid, oid_size );
mbedAustin 11:cada08fc8a70 222 p += oid_size;
mbedAustin 11:cada08fc8a70 223 *p++ = MBEDTLS_ASN1_NULL;
mbedAustin 11:cada08fc8a70 224 *p++ = 0x00;
mbedAustin 11:cada08fc8a70 225 *p++ = MBEDTLS_ASN1_OCTET_STRING;
mbedAustin 11:cada08fc8a70 226 *p++ = hashlen;
mbedAustin 11:cada08fc8a70 227 }
mbedAustin 11:cada08fc8a70 228
mbedAustin 11:cada08fc8a70 229 memcpy( p, hash, hashlen );
mbedAustin 11:cada08fc8a70 230
mbedAustin 11:cada08fc8a70 231 if( pkcs11h_certificate_signAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, sig,
mbedAustin 11:cada08fc8a70 232 asn_len + hashlen, sig, &sig_len ) != CKR_OK )
mbedAustin 11:cada08fc8a70 233 {
mbedAustin 11:cada08fc8a70 234 return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
mbedAustin 11:cada08fc8a70 235 }
mbedAustin 11:cada08fc8a70 236
mbedAustin 11:cada08fc8a70 237 return( 0 );
mbedAustin 11:cada08fc8a70 238 }
mbedAustin 11:cada08fc8a70 239
mbedAustin 11:cada08fc8a70 240 #endif /* defined(MBEDTLS_PKCS11_C) */