/* * Copyright (c) 2003,2011,2014 Apple Inc. All Rights Reserved. * * The contents of this file constitute Original Code as defined in and are * subject to the Apple Public Source License Version 1.2 (the 'License'). * You may not use this file except in compliance with the License. Please * obtain a copy of the License at http://www.apple.com/publicsource and * read it before using this file. * * This 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. */ /* * pbkdDigest.cpp - SHA1/MD5 digest object for HMAC and PBE routines */ #include "pbkdDigest.h" #include <Security/cssmerr.h> #include <string.h> /* the casts are necessary to cover the polymorphous context types */ DigestOps Md2Ops = { (DigestInitFcn)CC_MD2_Init, (DigestUpdateFcn)CC_MD2_Update, (DigestFinalFcn)CC_MD2_Final }; DigestOps Md5Ops = { (DigestInitFcn)CC_MD5_Init, (DigestUpdateFcn)CC_MD5_Update, (DigestFinalFcn)CC_MD5_Final }; DigestOps Sha1Ops = { (DigestInitFcn)CC_SHA1_Init, (DigestUpdateFcn)CC_SHA1_Update, (DigestFinalFcn)CC_SHA1_Final }; /* Ops on a DigestCtx - all return zero on error, like the underlying digests do */ int DigestCtxInit( DigestCtx *ctx, CSSM_ALGORITHMS hashAlg) { switch(hashAlg) { case CSSM_ALGID_SHA1: ctx->ops = &Sha1Ops; break; case CSSM_ALGID_MD5: ctx->ops = &Md5Ops; break; case CSSM_ALGID_MD2: ctx->ops = &Md2Ops; break; default: return 0; } ctx->hashAlg = hashAlg; return ctx->ops->init(&ctx->dig); } void DigestCtxFree( DigestCtx *ctx) { memset(ctx, 0, sizeof(DigestCtx)); } int DigestCtxUpdate( DigestCtx *ctx, const void *textPtr, uint32 textLen) { return ctx->ops->update(&ctx->dig, textPtr, textLen); } int DigestCtxFinal( DigestCtx *ctx, void *digest) { return ctx->ops->final(digest, &ctx->dig); }