ossl-common.c   [plain text]


/*
 * Copyright (c) 2011-12 Apple Inc. All Rights Reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_LICENSE_HEADER_END@
 */

/*
 * Copyright (c) 2010 Kungliga Tekniska Högskolan
 * (Royal Institute of Technology, Stockholm, Sweden).
 * All rights reserved.
 *
 * Portions Copyright (c) 2010 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "ossl-config.h"

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>

#include "krb5-types.h"
#include "rfc2459_asn1.h"

#include "ossl-bn.h"
#include "ossl-common.h"

#ifdef HAVE_CDSA

static CSSM_CSP_HANDLE cspHandle;

static CSSM_VERSION vers = { 2, 0 };
static const CSSM_GUID guid = { 0xFADE, 0, 0, { 1, 2, 3, 4, 5, 6, 7, 0 } };

const CSSM_DATA _cs_labelData = { 7, (void *)"noLabel" };

static void *cssmMalloc(CSSM_SIZE size, void *alloc)
{
	return (malloc(size));
}


static void cssmFree(void *ptr, void *alloc)
{
	free(ptr);
}


static void *cssmRealloc(void *ptr, CSSM_SIZE size, void *alloc)
{
	return (realloc(ptr, size));
}


static void *cssmCalloc(uint32 num, CSSM_SIZE size, void *alloc)
{
	return (calloc(num, size));
}


static CSSM_API_MEMORY_FUNCS cssm_memory_funcs =
{
	cssmMalloc,
	cssmFree,
	cssmRealloc,
	cssmCalloc,
	NULL
};

CSSM_CSP_HANDLE
_cs_get_cdsa_csphandle(void)
{
	CSSM_PVC_MODE pvcPolicy = CSSM_PVC_NONE;
	CSSM_RETURN ret;

	if (cspHandle) {
		return (cspHandle);
	}

	ret = CSSM_Init(&vers, CSSM_PRIVILEGE_SCOPE_NONE,
		&guid, CSSM_KEY_HIERARCHY_NONE,
		&pvcPolicy, NULL);
	if (ret != CSSM_OK) {
		fprintf(stderr, "CSSM_Init failed\n");
		abort();
	}

	ret = CSSM_ModuleLoad(&gGuidAppleCSP, CSSM_KEY_HIERARCHY_NONE, NULL, NULL);
	if (ret) {
		fprintf(stderr, "CSSM_ModuleLoad failed\n");
		abort();
	}

	ret = CSSM_ModuleAttach(&gGuidAppleCSP, &vers, &cssm_memory_funcs,
		0, CSSM_SERVICE_CSP, 0,
		CSSM_KEY_HIERARCHY_NONE,
		NULL, 0, NULL, &cspHandle);
	if (ret) {
		fprintf(stderr, "CSSM_ModuleAttach failed\n");
		abort();
	}

	return (cspHandle);
}


#endif /* HAVE_CDSA */


int
_cs_BN_to_integer(BIGNUM *bn, heim_integer *integer)
{
	integer->length = BN_num_bytes(bn);
	integer->data = malloc(integer->length);
	if (integer->data == NULL) {
		return (ENOMEM);
	}
	BN_bn2bin(bn, integer->data);
	integer->negative = BN_is_negative(bn);
	return (0);
}


BIGNUM *
_cs_integer_to_BN(const heim_integer *i, BIGNUM *bn)
{
	bn = BN_bin2bn(i->data, i->length, bn);
	if (bn) {
		BN_set_negative(bn, i->negative);
	}
	return (bn);
}