--- /dev/null
+/**\r
+ * \file pkcs11.c\r
+ *\r
+ * \brief Wrapper for PKCS#11 library libpkcs11-helper\r
+ *\r
+ * \author Adriaan de Jong <dejong@fox-it.com>\r
+ *\r
+ * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved\r
+ * SPDX-License-Identifier: Apache-2.0\r
+ *\r
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may\r
+ * not use this file except in compliance with the License.\r
+ * You may obtain a copy of the License at\r
+ *\r
+ * http://www.apache.org/licenses/LICENSE-2.0\r
+ *\r
+ * Unless required by applicable law or agreed to in writing, software\r
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT\r
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
+ * See the License for the specific language governing permissions and\r
+ * limitations under the License.\r
+ *\r
+ * This file is part of mbed TLS (https://tls.mbed.org)\r
+ */\r
+\r
+#include "mbedtls/pkcs11.h"\r
+\r
+#if defined(MBEDTLS_PKCS11_C)\r
+\r
+#include "mbedtls/md.h"\r
+#include "mbedtls/oid.h"\r
+#include "mbedtls/x509_crt.h"\r
+\r
+#if defined(MBEDTLS_PLATFORM_C)\r
+#include "mbedtls/platform.h"\r
+#else\r
+#include <stdlib.h>\r
+#define mbedtls_calloc calloc\r
+#define mbedtls_free free\r
+#endif\r
+\r
+#include <string.h>\r
+\r
+void mbedtls_pkcs11_init( mbedtls_pkcs11_context *ctx )\r
+{\r
+ memset( ctx, 0, sizeof( mbedtls_pkcs11_context ) );\r
+}\r
+\r
+int mbedtls_pkcs11_x509_cert_bind( mbedtls_x509_crt *cert, pkcs11h_certificate_t pkcs11_cert )\r
+{\r
+ int ret = 1;\r
+ unsigned char *cert_blob = NULL;\r
+ size_t cert_blob_size = 0;\r
+\r
+ if( cert == NULL )\r
+ {\r
+ ret = 2;\r
+ goto cleanup;\r
+ }\r
+\r
+ if( pkcs11h_certificate_getCertificateBlob( pkcs11_cert, NULL,\r
+ &cert_blob_size ) != CKR_OK )\r
+ {\r
+ ret = 3;\r
+ goto cleanup;\r
+ }\r
+\r
+ cert_blob = mbedtls_calloc( 1, cert_blob_size );\r
+ if( NULL == cert_blob )\r
+ {\r
+ ret = 4;\r
+ goto cleanup;\r
+ }\r
+\r
+ if( pkcs11h_certificate_getCertificateBlob( pkcs11_cert, cert_blob,\r
+ &cert_blob_size ) != CKR_OK )\r
+ {\r
+ ret = 5;\r
+ goto cleanup;\r
+ }\r
+\r
+ if( 0 != mbedtls_x509_crt_parse( cert, cert_blob, cert_blob_size ) )\r
+ {\r
+ ret = 6;\r
+ goto cleanup;\r
+ }\r
+\r
+ ret = 0;\r
+\r
+cleanup:\r
+ if( NULL != cert_blob )\r
+ mbedtls_free( cert_blob );\r
+\r
+ return( ret );\r
+}\r
+\r
+\r
+int mbedtls_pkcs11_priv_key_bind( mbedtls_pkcs11_context *priv_key,\r
+ pkcs11h_certificate_t pkcs11_cert )\r
+{\r
+ int ret = 1;\r
+ mbedtls_x509_crt cert;\r
+\r
+ mbedtls_x509_crt_init( &cert );\r
+\r
+ if( priv_key == NULL )\r
+ goto cleanup;\r
+\r
+ if( 0 != mbedtls_pkcs11_x509_cert_bind( &cert, pkcs11_cert ) )\r
+ goto cleanup;\r
+\r
+ priv_key->len = mbedtls_pk_get_len( &cert.pk );\r
+ priv_key->pkcs11h_cert = pkcs11_cert;\r
+\r
+ ret = 0;\r
+\r
+cleanup:\r
+ mbedtls_x509_crt_free( &cert );\r
+\r
+ return( ret );\r
+}\r
+\r
+void mbedtls_pkcs11_priv_key_free( mbedtls_pkcs11_context *priv_key )\r
+{\r
+ if( NULL != priv_key )\r
+ pkcs11h_certificate_freeCertificate( priv_key->pkcs11h_cert );\r
+}\r
+\r
+int mbedtls_pkcs11_decrypt( mbedtls_pkcs11_context *ctx,\r
+ int mode, size_t *olen,\r
+ const unsigned char *input,\r
+ unsigned char *output,\r
+ size_t output_max_len )\r
+{\r
+ size_t input_len, output_len;\r
+\r
+ if( NULL == ctx )\r
+ return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );\r
+\r
+ if( MBEDTLS_RSA_PRIVATE != mode )\r
+ return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );\r
+\r
+ output_len = input_len = ctx->len;\r
+\r
+ if( input_len < 16 || input_len > output_max_len )\r
+ return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );\r
+\r
+ /* Determine size of output buffer */\r
+ if( pkcs11h_certificate_decryptAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, input,\r
+ input_len, NULL, &output_len ) != CKR_OK )\r
+ {\r
+ return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );\r
+ }\r
+\r
+ if( output_len > output_max_len )\r
+ return( MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE );\r
+\r
+ if( pkcs11h_certificate_decryptAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, input,\r
+ input_len, output, &output_len ) != CKR_OK )\r
+ {\r
+ return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );\r
+ }\r
+ *olen = output_len;\r
+ return( 0 );\r
+}\r
+\r
+int mbedtls_pkcs11_sign( mbedtls_pkcs11_context *ctx,\r
+ int mode,\r
+ mbedtls_md_type_t md_alg,\r
+ unsigned int hashlen,\r
+ const unsigned char *hash,\r
+ unsigned char *sig )\r
+{\r
+ size_t sig_len = 0, asn_len = 0, oid_size = 0;\r
+ unsigned char *p = sig;\r
+ const char *oid;\r
+\r
+ if( NULL == ctx )\r
+ return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );\r
+\r
+ if( MBEDTLS_RSA_PRIVATE != mode )\r
+ return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );\r
+\r
+ if( md_alg != MBEDTLS_MD_NONE )\r
+ {\r
+ const mbedtls_md_info_t *md_info = mbedtls_md_info_from_type( md_alg );\r
+ if( md_info == NULL )\r
+ return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );\r
+\r
+ if( mbedtls_oid_get_oid_by_md( md_alg, &oid, &oid_size ) != 0 )\r
+ return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );\r
+\r
+ hashlen = mbedtls_md_get_size( md_info );\r
+ asn_len = 10 + oid_size;\r
+ }\r
+\r
+ sig_len = ctx->len;\r
+ if( hashlen > sig_len || asn_len > sig_len ||\r
+ hashlen + asn_len > sig_len )\r
+ {\r
+ return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );\r
+ }\r
+\r
+ if( md_alg != MBEDTLS_MD_NONE )\r
+ {\r
+ /*\r
+ * DigestInfo ::= SEQUENCE {\r
+ * digestAlgorithm DigestAlgorithmIdentifier,\r
+ * digest Digest }\r
+ *\r
+ * DigestAlgorithmIdentifier ::= AlgorithmIdentifier\r
+ *\r
+ * Digest ::= OCTET STRING\r
+ */\r
+ *p++ = MBEDTLS_ASN1_SEQUENCE | MBEDTLS_ASN1_CONSTRUCTED;\r
+ *p++ = (unsigned char) ( 0x08 + oid_size + hashlen );\r
+ *p++ = MBEDTLS_ASN1_SEQUENCE | MBEDTLS_ASN1_CONSTRUCTED;\r
+ *p++ = (unsigned char) ( 0x04 + oid_size );\r
+ *p++ = MBEDTLS_ASN1_OID;\r
+ *p++ = oid_size & 0xFF;\r
+ memcpy( p, oid, oid_size );\r
+ p += oid_size;\r
+ *p++ = MBEDTLS_ASN1_NULL;\r
+ *p++ = 0x00;\r
+ *p++ = MBEDTLS_ASN1_OCTET_STRING;\r
+ *p++ = hashlen;\r
+ }\r
+\r
+ memcpy( p, hash, hashlen );\r
+\r
+ if( pkcs11h_certificate_signAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, sig,\r
+ asn_len + hashlen, sig, &sig_len ) != CKR_OK )\r
+ {\r
+ return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );\r
+ }\r
+\r
+ return( 0 );\r
+}\r
+\r
+#endif /* defined(MBEDTLS_PKCS11_C) */\r
projects / freertos / blobdiff