1/*
2 * Copyright (c) 2003-2005 Apple Computer, Inc. All Rights Reserved.
3 *
4 * The contents of this file constitute Original Code as defined in and are
5 * subject to the Apple Public Source License Version 1.2 (the 'License').
6 * You may not use this file except in compliance with the License. Please
7 * obtain a copy of the License at http://www.apple.com/publicsource and
8 * read it before using this file.
9 *
10 * This Original Code and all software distributed under the License are
11 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
12 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
13 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
14 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
15 * Please see the License for the specific language governing rights and
16 * limitations under the License.
17 */
18/*
19 * pbkdDigest.cpp - SHA1/MD5 digest object
20 */
21
22#include "pbkdDigest.h"
23#include <Security/cssmerr.h>
24#include <string.h>
25
26/* the casts are necessary to cover the polymorphous context types */
27DigestOps Md5Ops = {
28	(DigestInitFcn)MD5_Init,
29	(DigestUpdateFcn)MD5_Update,
30	(DigestFinalFcn)MD5_Final
31};
32DigestOps Sha1Ops = {
33	(DigestInitFcn)SHA1_Init,
34	(DigestUpdateFcn)SHA1_Update,
35	(DigestFinalFcn)SHA1_Final
36};
37
38/* Ops on a DigestCtx */
39int DigestCtxInit(
40	DigestCtx 	*ctx,
41	CSSM_BOOL	isSha1)
42{
43	if(isSha1) {
44		ctx->ops = &Sha1Ops;
45	}
46	else {
47		ctx->ops = &Md5Ops;
48	}
49	ctx->isSha1 = isSha1;
50	return ctx->ops->init(&ctx->dig);
51}
52
53void DigestCtxFree(
54	DigestCtx 	*ctx)
55{
56	memset(ctx, 0, sizeof(DigestCtx));
57}
58
59int DigestCtxUpdate(
60	DigestCtx 	*ctx,
61	const void *textPtr,
62	uint32 textLen)
63{
64	return ctx->ops->update(&ctx->dig, textPtr, textLen);
65}
66
67int DigestCtxFinal(
68	DigestCtx 	*ctx,
69	void 		*digest)
70{
71	return ctx->ops->final(digest, &ctx->dig);
72}
73