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/**
* \file pkcs11.c
*
* \brief Wrapper for PKCS#11 library libpkcs11-helper
*
* \author Adriaan de Jong <dejong@fox-it.com>
*
* Copyright (C) 2006-2010, Brainspark B.V.
*
* This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
*
* All rights reserved.
*
* 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 <stdlib.h>
int pkcs11_x509_cert_init( x509_cert *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 = 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 != x509parse_crt(cert, cert_blob, cert_blob_size ) )
{
ret = 6;
goto cleanup;
}
ret = 0;
cleanup:
if( NULL != cert_blob )
free( cert_blob );
return ret;
}
int pkcs11_priv_key_init( pkcs11_context *priv_key,
pkcs11h_certificate_t pkcs11_cert )
{
int ret = 1;
x509_cert cert;
memset( &cert, 0, sizeof( cert ) );
if( priv_key == NULL )
goto cleanup;
if( 0 != pkcs11_x509_cert_init( &cert, pkcs11_cert ) )
goto cleanup;
priv_key->len = cert.rsa.len;
priv_key->pkcs11h_cert = pkcs11_cert;
ret = 0;
cleanup:
x509_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,
unsigned int output_max_len )
{
size_t input_len, output_len;
if( NULL == ctx )
return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
if( RSA_PUBLIC == 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,
int hash_id,
unsigned int hashlen,
const unsigned char *hash,
unsigned char *sig )
{
size_t olen, asn_len;
unsigned char *p = sig;
if( NULL == ctx )
return POLARSSL_ERR_RSA_BAD_INPUT_DATA;
if( RSA_PUBLIC == mode )
return POLARSSL_ERR_RSA_BAD_INPUT_DATA;
olen = ctx->len;
switch( hash_id )
{
case SIG_RSA_RAW:
asn_len = 0;
memcpy( p, hash, hashlen );
break;
case SIG_RSA_MD2:
asn_len = OID_SIZE(ASN1_HASH_MDX);
memcpy( p, ASN1_HASH_MDX, asn_len );
memcpy( p + asn_len, hash, hashlen );
p[13] = 2; break;
case SIG_RSA_MD4:
asn_len = OID_SIZE(ASN1_HASH_MDX);
memcpy( p, ASN1_HASH_MDX, asn_len );
memcpy( p + asn_len, hash, hashlen );
p[13] = 4; break;
case SIG_RSA_MD5:
asn_len = OID_SIZE(ASN1_HASH_MDX);
memcpy( p, ASN1_HASH_MDX, asn_len );
memcpy( p + asn_len, hash, hashlen );
p[13] = 5; break;
case SIG_RSA_SHA1:
asn_len = OID_SIZE(ASN1_HASH_SHA1);
memcpy( p, ASN1_HASH_SHA1, asn_len );
memcpy( p + 15, hash, hashlen );
break;
case SIG_RSA_SHA224:
asn_len = OID_SIZE(ASN1_HASH_SHA2X);
memcpy( p, ASN1_HASH_SHA2X, asn_len );
memcpy( p + asn_len, hash, hashlen );
p[1] += hashlen; p[14] = 4; p[18] += hashlen; break;
case SIG_RSA_SHA256:
asn_len = OID_SIZE(ASN1_HASH_SHA2X);
memcpy( p, ASN1_HASH_SHA2X, asn_len );
memcpy( p + asn_len, hash, hashlen );
p[1] += hashlen; p[14] = 1; p[18] += hashlen; break;
case SIG_RSA_SHA384:
asn_len = OID_SIZE(ASN1_HASH_SHA2X);
memcpy( p, ASN1_HASH_SHA2X, asn_len );
memcpy( p + asn_len, hash, hashlen );
p[1] += hashlen; p[14] = 2; p[18] += hashlen; break;
case SIG_RSA_SHA512:
asn_len = OID_SIZE(ASN1_HASH_SHA2X);
memcpy( p, ASN1_HASH_SHA2X, asn_len );
memcpy( p + asn_len, hash, hashlen );
p[1] += hashlen; p[14] = 3; p[18] += hashlen; break;
default:
return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
}
if( pkcs11h_certificate_signAny( ctx->pkcs11h_cert, CKM_RSA_PKCS, sig,
asn_len + hashlen, sig, &olen ) != CKR_OK )
{
return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
}
return( 0 );
}
#endif /* defined(POLARSSL_PKCS11_C) */
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