SecurityTests/cspxutils/hashTimeLibCrypt/pbkdDigest.cpp

   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 */
  27 DigestOps Md5Ops = {
  28         (DigestInitFcn)MD5_Init,
  29         (DigestUpdateFcn)MD5_Update,
  30         (DigestFinalFcn)MD5_Final
  31 };
  32 DigestOps Sha1Ops = {
  33         (DigestInitFcn)SHA1_Init,
  34         (DigestUpdateFcn)SHA1_Update,
  35         (DigestFinalFcn)SHA1_Final
  36 };
  37
  38 /* Ops on a DigestCtx */
  39 int 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
  53 void DigestCtxFree(
  54         DigestCtx       *ctx)
  55 {
  56         memset(ctx, 0, sizeof(DigestCtx));
  57 }
  58
  59 int DigestCtxUpdate(
  60         DigestCtx       *ctx,
  61         const void *textPtr,
  62         uint32 textLen)
  63 {
  64         return ctx->ops->update(&ctx->dig, textPtr, textLen);
  65 }
  66
  67 int DigestCtxFinal(
  68         DigestCtx       *ctx,
  69         void            *digest)
  70 {
  71         return ctx->ops->final(digest, &ctx->dig);
  72 }