Marco Zecchini
Rtos API example
Diff: mbed-os/features/mbedtls/src/pkcs11.c
- Revision:
- 0:9fca2b23d0ba
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os/features/mbedtls/src/pkcs11.c Sat Feb 23 12:13:36 2019 +0000
@@ -0,0 +1,240 @@
+/**
+ * \file pkcs11.c
+ *
+ * \brief Wrapper for PKCS#11 library libpkcs11-helper
+ *
+ * \author Adriaan de Jong <dejong@fox-it.com>
+ *
+ * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
+ * 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.
+ *
+ * This file is part of mbed TLS (https://tls.mbed.org)
+ */
+
+#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) */