Security/libsecurity_apple_csp/lib/pbkdDigest.h

   1 /*
   2  * Copyright (c) 2003,2011,2014 Apple 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.h - SHA1/MD5 digest object for HMAC and PBE routines
  20  */
  21
  22 #ifndef _PBKD_DIGEST_H_
  23 #define _PBKD_DIGEST_H_
  24
  25 #include <Security/cssmtype.h>
  26 #include <CommonCrypto/CommonDigest.h>
  27
  28 #ifdef __cplusplus
  29 extern "C" {
  30 #endif
  31
  32 #define kSHA1DigestSize                 CC_SHA1_DIGEST_LENGTH
  33 #define kSHA1BlockSize                  CC_SHA1_BLOCK_BYTES
  34
  35 #define kMD5DigestSize                  CC_MD5_DIGEST_LENGTH
  36 #define kMD5BlockSize                   CC_MD5_BLOCK_BYTES
  37
  38 #define kMD2DigestSize                  CC_MD2_DIGEST_LENGTH
  39 #define kMD2BlockSize                   CC_MD2_BLOCK_BYTES
  40
  41 #define kMaxDigestSize                  kSHA1DigestSize
  42
  43 typedef int (*DigestInitFcn)(void *ctx);
  44 typedef int (*DigestUpdateFcn)(void *ctx, const void *data, unsigned long len);
  45 typedef int (*DigestFinalFcn)(void *md, void *c);
  46
  47 /* callouts to eay/libmd implementations */
  48 typedef struct {
  49         DigestInitFcn           init;
  50         DigestUpdateFcn         update;
  51         DigestFinalFcn          final;
  52 } DigestOps;
  53
  54 typedef struct {
  55         union {
  56                 CC_SHA1_CTX     sha1Context;
  57                 CC_MD5_CTX              md5Context;
  58                 CC_MD2_CTX              md2Context;
  59         } dig;
  60         DigestOps               *ops;
  61         CSSM_ALGORITHMS hashAlg;
  62 } DigestCtx;
  63
  64 /* Ops on a DigestCtx - all return zero on error, like the underlying digests do */
  65 int DigestCtxInit(
  66         DigestCtx               *ctx,
  67         CSSM_ALGORITHMS hashAlg);
  68 void DigestCtxFree(
  69         DigestCtx       *ctx);
  70 int DigestCtxUpdate(
  71         DigestCtx       *ctx,
  72         const void      *textPtr,
  73         uint32 textLen);
  74 int DigestCtxFinal(
  75         DigestCtx       *ctx,
  76         void            *digest);
  77
  78 #ifdef __cplusplus
  79 }
  80 #endif
  81
  82 #endif  /* _PBKD_DIGEST_H_ */
  83