diff options
Diffstat (limited to 'lib/mbedtls-2.27.0/library/pkcs11.c')
| -rw-r--r-- | lib/mbedtls-2.27.0/library/pkcs11.c | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/lib/mbedtls-2.27.0/library/pkcs11.c b/lib/mbedtls-2.27.0/library/pkcs11.c new file mode 100644 index 0000000..4deccf3 --- /dev/null +++ b/lib/mbedtls-2.27.0/library/pkcs11.c @@ -0,0 +1,238 @@ +/** + * \file pkcs11.c + * + * \brief Wrapper for PKCS#11 library libpkcs11-helper + * + * \author Adriaan de Jong <dejong@fox-it.com> + * + * Copyright The Mbed TLS Contributors + * SPDX-License-Identifier: Apache-2.0 + * + * Licensed under the Apache License, Version 2.0 (the "License"); you may + * not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "mbedtls/pkcs11.h" + +#if defined(MBEDTLS_PKCS11_C) + +#include "mbedtls/md.h" +#include "mbedtls/oid.h" +#include "mbedtls/x509_crt.h" + +#if defined(MBEDTLS_PLATFORM_C) +#include "mbedtls/platform.h" +#else +#include <stdlib.h> +#define mbedtls_calloc calloc +#define mbedtls_free free +#endif + +#include <string.h> + +void mbedtls_pkcs11_init( mbedtls_pkcs11_context *ctx ) +{ + memset( ctx, 0, sizeof( mbedtls_pkcs11_context ) ); +} + +int mbedtls_pkcs11_x509_cert_bind( mbedtls_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 = mbedtls_calloc( 1, 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 != mbedtls_x509_crt_parse( cert, cert_blob, cert_blob_size ) ) + { + ret = 6; + goto cleanup; + } + + ret = 0; + +cleanup: + if( NULL != cert_blob ) + mbedtls_free( cert_blob ); + + return( ret ); +} + + +int mbedtls_pkcs11_priv_key_bind( mbedtls_pkcs11_context *priv_key, + pkcs11h_certificate_t pkcs11_cert ) +{ + int ret = 1; + mbedtls_x509_crt cert; + + mbedtls_x509_crt_init( &cert ); + + if( priv_key == NULL ) + goto cleanup; + + if( 0 != mbedtls_pkcs11_x509_cert_bind( &cert, pkcs11_cert ) ) + goto cleanup; + + priv_key->len = mbedtls_pk_get_len( &cert.pk ); + priv_key->pkcs11h_cert = pkcs11_cert; + + ret = 0; + +cleanup: + mbedtls_x509_crt_free( &cert ); + + return( ret ); +} + +void mbedtls_pkcs11_priv_key_free( mbedtls_pkcs11_context *priv_key ) +{ + if( NULL != priv_key ) + pkcs11h_certificate_freeCertificate( priv_key->pkcs11h_cert ); +} + +int mbedtls_pkcs11_decrypt( mbedtls_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( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); + + if( MBEDTLS_RSA_PRIVATE != mode ) + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); + + output_len = input_len = ctx->len; + + if( input_len < 16 || input_len > output_max_len ) + return( MBEDTLS_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( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); + } + + if( output_len > output_max_len ) + return( MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE ); + + if( pkcs11h_certificate_decryptAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, input, + input_len, output, &output_len ) != CKR_OK ) + { + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); + } + *olen = output_len; + return( 0 ); +} + +int mbedtls_pkcs11_sign( mbedtls_pkcs11_context *ctx, + int mode, + mbedtls_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( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); + + if( MBEDTLS_RSA_PRIVATE != mode ) + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); + + if( md_alg != MBEDTLS_MD_NONE ) + { + const mbedtls_md_info_t *md_info = mbedtls_md_info_from_type( md_alg ); + if( md_info == NULL ) + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); + + if( mbedtls_oid_get_oid_by_md( md_alg, &oid, &oid_size ) != 0 ) + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); + + hashlen = mbedtls_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( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); + } + + if( md_alg != MBEDTLS_MD_NONE ) + { + /* + * DigestInfo ::= SEQUENCE { + * digestAlgorithm DigestAlgorithmIdentifier, + * digest Digest } + * + * DigestAlgorithmIdentifier ::= AlgorithmIdentifier + * + * Digest ::= OCTET STRING + */ + *p++ = MBEDTLS_ASN1_SEQUENCE | MBEDTLS_ASN1_CONSTRUCTED; + *p++ = (unsigned char) ( 0x08 + oid_size + hashlen ); + *p++ = MBEDTLS_ASN1_SEQUENCE | MBEDTLS_ASN1_CONSTRUCTED; + *p++ = (unsigned char) ( 0x04 + oid_size ); + *p++ = MBEDTLS_ASN1_OID; + *p++ = oid_size & 0xFF; + memcpy( p, oid, oid_size ); + p += oid_size; + *p++ = MBEDTLS_ASN1_NULL; + *p++ = 0x00; + *p++ = MBEDTLS_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( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); + } + + return( 0 ); +} + +#endif /* defined(MBEDTLS_PKCS11_C) */ |