mbed TLS library
Dependents: HTTPClient-SSL WS_SERVER
Diff: polarssl/pkcs11.c
- Revision:
- 0:137634ff4186
diff -r 000000000000 -r 137634ff4186 polarssl/pkcs11.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/polarssl/pkcs11.c Thu Jun 11 03:27:03 2015 +0000 @@ -0,0 +1,235 @@ +/** + * \file pkcs11.c + * + * \brief Wrapper for PKCS#11 library libpkcs11-helper + * + * \author Adriaan de Jong <dejong@fox-it.com> + * + * Copyright (C) 2006-2014, ARM Limited, All Rights Reserved + * + * This file is part of mbed TLS (https://tls.mbed.org) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "polarssl/pkcs11.h" + +#if defined(POLARSSL_PKCS11_C) + +#include "polarssl/md.h" +#include "polarssl/oid.h" +#include "polarssl/x509_crt.h" + +#if defined(POLARSSL_PLATFORM_C) +#include "polarssl/platform.h" +#else +#include <stdlib.h> +#define polarssl_malloc malloc +#define polarssl_free free +#endif + +int pkcs11_x509_cert_init( x509_crt *cert, pkcs11h_certificate_t pkcs11_cert ) +{ + int ret = 1; + unsigned char *cert_blob = NULL; + size_t cert_blob_size = 0; + + if( cert == NULL ) + { + ret = 2; + goto cleanup; + } + + if( pkcs11h_certificate_getCertificateBlob( pkcs11_cert, NULL, + &cert_blob_size ) != CKR_OK ) + { + ret = 3; + goto cleanup; + } + + cert_blob = polarssl_malloc( cert_blob_size ); + if( NULL == cert_blob ) + { + ret = 4; + goto cleanup; + } + + if( pkcs11h_certificate_getCertificateBlob( pkcs11_cert, cert_blob, + &cert_blob_size ) != CKR_OK ) + { + ret = 5; + goto cleanup; + } + + if( 0 != x509_crt_parse( cert, cert_blob, cert_blob_size ) ) + { + ret = 6; + goto cleanup; + } + + ret = 0; + +cleanup: + if( NULL != cert_blob ) + polarssl_free( cert_blob ); + + return( ret ); +} + + +int pkcs11_priv_key_init( pkcs11_context *priv_key, + pkcs11h_certificate_t pkcs11_cert ) +{ + int ret = 1; + x509_crt cert; + + x509_crt_init( &cert ); + + if( priv_key == NULL ) + goto cleanup; + + if( 0 != pkcs11_x509_cert_init( &cert, pkcs11_cert ) ) + goto cleanup; + + priv_key->len = pk_get_len( &cert.pk ); + priv_key->pkcs11h_cert = pkcs11_cert; + + ret = 0; + +cleanup: + x509_crt_free( &cert ); + + return( ret ); +} + +void pkcs11_priv_key_free( pkcs11_context *priv_key ) +{ + if( NULL != priv_key ) + pkcs11h_certificate_freeCertificate( priv_key->pkcs11h_cert ); +} + +int pkcs11_decrypt( pkcs11_context *ctx, + int mode, size_t *olen, + const unsigned char *input, + unsigned char *output, + size_t output_max_len ) +{ + size_t input_len, output_len; + + if( NULL == ctx ) + return( POLARSSL_ERR_RSA_BAD_INPUT_DATA ); + + if( RSA_PRIVATE != mode ) + return( POLARSSL_ERR_RSA_BAD_INPUT_DATA ); + + output_len = input_len = ctx->len; + + if( input_len < 16 || input_len > output_max_len ) + return( POLARSSL_ERR_RSA_BAD_INPUT_DATA ); + + /* Determine size of output buffer */ + if( pkcs11h_certificate_decryptAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, input, + input_len, NULL, &output_len ) != CKR_OK ) + { + return( POLARSSL_ERR_RSA_BAD_INPUT_DATA ); + } + + if( output_len > output_max_len ) + return( POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE ); + + if( pkcs11h_certificate_decryptAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, input, + input_len, output, &output_len ) != CKR_OK ) + { + return( POLARSSL_ERR_RSA_BAD_INPUT_DATA ); + } + *olen = output_len; + return( 0 ); +} + +int pkcs11_sign( pkcs11_context *ctx, + int mode, + md_type_t md_alg, + unsigned int hashlen, + const unsigned char *hash, + unsigned char *sig ) +{ + size_t sig_len = 0, asn_len = 0, oid_size = 0; + unsigned char *p = sig; + const char *oid; + + if( NULL == ctx ) + return( POLARSSL_ERR_RSA_BAD_INPUT_DATA ); + + if( RSA_PRIVATE != mode ) + return( POLARSSL_ERR_RSA_BAD_INPUT_DATA ); + + if( md_alg != POLARSSL_MD_NONE ) + { + const md_info_t *md_info = md_info_from_type( md_alg ); + if( md_info == NULL ) + return( POLARSSL_ERR_RSA_BAD_INPUT_DATA ); + + if( oid_get_oid_by_md( md_alg, &oid, &oid_size ) != 0 ) + return( POLARSSL_ERR_RSA_BAD_INPUT_DATA ); + + hashlen = md_get_size( md_info ); + asn_len = 10 + oid_size; + } + + sig_len = ctx->len; + if( hashlen > sig_len || asn_len > sig_len || + hashlen + asn_len > sig_len ) + { + return( POLARSSL_ERR_RSA_BAD_INPUT_DATA ); + } + + if( md_alg != POLARSSL_MD_NONE ) + { + /* + * DigestInfo ::= SEQUENCE { + * digestAlgorithm DigestAlgorithmIdentifier, + * digest Digest } + * + * DigestAlgorithmIdentifier ::= AlgorithmIdentifier + * + * Digest ::= OCTET STRING + */ + *p++ = ASN1_SEQUENCE | ASN1_CONSTRUCTED; + *p++ = (unsigned char) ( 0x08 + oid_size + hashlen ); + *p++ = ASN1_SEQUENCE | ASN1_CONSTRUCTED; + *p++ = (unsigned char) ( 0x04 + oid_size ); + *p++ = ASN1_OID; + *p++ = oid_size & 0xFF; + memcpy( p, oid, oid_size ); + p += oid_size; + *p++ = ASN1_NULL; + *p++ = 0x00; + *p++ = ASN1_OCTET_STRING; + *p++ = hashlen; + } + + memcpy( p, hash, hashlen ); + + if( pkcs11h_certificate_signAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, sig, + asn_len + hashlen, sig, &sig_len ) != CKR_OK ) + { + return( POLARSSL_ERR_RSA_BAD_INPUT_DATA ); + } + + return( 0 ); +} + +#endif /* defined(POLARSSL_PKCS11_C) */ +