246 lines
6.5 KiB
C
246 lines
6.5 KiB
C
/**
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* \file pkcs11.c
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*
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* \brief Wrapper for PKCS#11 library libpkcs11-helper
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*
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* \author Adriaan de Jong <dejong@fox-it.com>
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*
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* Copyright (C) 2006-2013, Brainspark B.V.
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*
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* This file is part of PolarSSL (http://www.polarssl.org)
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* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "polarssl/pkcs11.h"
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#if defined(POLARSSL_PKCS11_C)
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#if defined(POLARSSL_MEMORY_C)
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#include "polarssl/memory.h"
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#else
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#define polarssl_malloc malloc
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#define polarssl_free free
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#endif
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#include <stdlib.h>
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int pkcs11_x509_cert_init( x509_cert *cert, pkcs11h_certificate_t pkcs11_cert )
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{
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int ret = 1;
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unsigned char *cert_blob = NULL;
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size_t cert_blob_size = 0;
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if( cert == NULL )
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{
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ret = 2;
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goto cleanup;
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}
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if( pkcs11h_certificate_getCertificateBlob( pkcs11_cert, NULL, &cert_blob_size ) != CKR_OK )
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{
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ret = 3;
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goto cleanup;
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}
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cert_blob = polarssl_malloc( cert_blob_size );
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if( NULL == cert_blob )
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{
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ret = 4;
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goto cleanup;
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}
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if( pkcs11h_certificate_getCertificateBlob( pkcs11_cert, cert_blob, &cert_blob_size ) != CKR_OK )
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{
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ret = 5;
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goto cleanup;
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}
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if( 0 != x509parse_crt(cert, cert_blob, cert_blob_size ) )
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{
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ret = 6;
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goto cleanup;
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}
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ret = 0;
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cleanup:
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if( NULL != cert_blob )
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polarssl_free( cert_blob );
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return ret;
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}
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int pkcs11_priv_key_init( pkcs11_context *priv_key,
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pkcs11h_certificate_t pkcs11_cert )
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{
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int ret = 1;
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x509_cert cert;
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memset( &cert, 0, sizeof( cert ) );
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if( priv_key == NULL )
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goto cleanup;
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if( 0 != pkcs11_x509_cert_init( &cert, pkcs11_cert ) )
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goto cleanup;
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priv_key->len = cert.rsa.len;
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priv_key->pkcs11h_cert = pkcs11_cert;
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ret = 0;
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cleanup:
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x509_free( &cert );
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return ret;
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}
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void pkcs11_priv_key_free( pkcs11_context *priv_key )
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{
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if( NULL != priv_key )
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pkcs11h_certificate_freeCertificate( priv_key->pkcs11h_cert );
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}
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int pkcs11_decrypt( pkcs11_context *ctx,
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int mode, size_t *olen,
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const unsigned char *input,
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unsigned char *output,
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size_t output_max_len )
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{
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size_t input_len, output_len;
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if( NULL == ctx )
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return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
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if( RSA_PUBLIC == mode )
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return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
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output_len = input_len = ctx->len;
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if( input_len < 16 || input_len > output_max_len )
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return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
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/* Determine size of output buffer */
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if( pkcs11h_certificate_decryptAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, input,
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input_len, NULL, &output_len ) != CKR_OK )
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{
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return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
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}
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if( output_len > output_max_len )
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return( POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE );
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if( pkcs11h_certificate_decryptAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, input,
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input_len, output, &output_len ) != CKR_OK )
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{
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return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
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}
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*olen = output_len;
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return( 0 );
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}
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int pkcs11_sign( pkcs11_context *ctx,
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int mode,
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int hash_id,
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unsigned int hashlen,
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const unsigned char *hash,
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unsigned char *sig )
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{
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size_t olen, asn_len;
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unsigned char *p = sig;
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if( NULL == ctx )
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return POLARSSL_ERR_RSA_BAD_INPUT_DATA;
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if( RSA_PUBLIC == mode )
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return POLARSSL_ERR_RSA_BAD_INPUT_DATA;
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olen = ctx->len;
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switch( hash_id )
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{
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case SIG_RSA_RAW:
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asn_len = 0;
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memcpy( p, hash, hashlen );
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break;
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case SIG_RSA_MD2:
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asn_len = OID_SIZE(ASN1_HASH_MDX);
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memcpy( p, ASN1_HASH_MDX, asn_len );
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memcpy( p + asn_len, hash, hashlen );
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p[13] = 2; break;
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case SIG_RSA_MD4:
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asn_len = OID_SIZE(ASN1_HASH_MDX);
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memcpy( p, ASN1_HASH_MDX, asn_len );
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memcpy( p + asn_len, hash, hashlen );
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p[13] = 4; break;
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case SIG_RSA_MD5:
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asn_len = OID_SIZE(ASN1_HASH_MDX);
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memcpy( p, ASN1_HASH_MDX, asn_len );
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memcpy( p + asn_len, hash, hashlen );
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p[13] = 5; break;
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case SIG_RSA_SHA1:
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asn_len = OID_SIZE(ASN1_HASH_SHA1);
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memcpy( p, ASN1_HASH_SHA1, asn_len );
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memcpy( p + 15, hash, hashlen );
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break;
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case SIG_RSA_SHA224:
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asn_len = OID_SIZE(ASN1_HASH_SHA2X);
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memcpy( p, ASN1_HASH_SHA2X, asn_len );
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memcpy( p + asn_len, hash, hashlen );
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p[1] += hashlen; p[14] = 4; p[18] += hashlen; break;
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case SIG_RSA_SHA256:
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asn_len = OID_SIZE(ASN1_HASH_SHA2X);
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memcpy( p, ASN1_HASH_SHA2X, asn_len );
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memcpy( p + asn_len, hash, hashlen );
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p[1] += hashlen; p[14] = 1; p[18] += hashlen; break;
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case SIG_RSA_SHA384:
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asn_len = OID_SIZE(ASN1_HASH_SHA2X);
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memcpy( p, ASN1_HASH_SHA2X, asn_len );
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memcpy( p + asn_len, hash, hashlen );
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p[1] += hashlen; p[14] = 2; p[18] += hashlen; break;
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case SIG_RSA_SHA512:
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asn_len = OID_SIZE(ASN1_HASH_SHA2X);
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memcpy( p, ASN1_HASH_SHA2X, asn_len );
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memcpy( p + asn_len, hash, hashlen );
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p[1] += hashlen; p[14] = 3; p[18] += hashlen; break;
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default:
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return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
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}
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if( pkcs11h_certificate_signAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, sig,
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asn_len + hashlen, sig, &olen ) != CKR_OK )
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{
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return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
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}
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return( 0 );
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}
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#endif /* defined(POLARSSL_PKCS11_C) */
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