AppleCSP/MiscCSPAlgs/SHA1.h

   1 /* Copyright (c) 1998 Apple Computer, Inc.  All rights reserved.
   2  *
   3  * NOTICE: USE OF THE MATERIALS ACCOMPANYING THIS NOTICE IS SUBJECT
   4  * TO THE TERMS OF THE SIGNED "FAST ELLIPTIC ENCRYPTION (FEE) REFERENCE
   5  * SOURCE CODE EVALUATION AGREEMENT" BETWEEN APPLE COMPUTER, INC. AND THE
   6  * ORIGINAL LICENSEE THAT OBTAINED THESE MATERIALS FROM APPLE COMPUTER,
   7  * INC.  ANY USE OF THESE MATERIALS NOT PERMITTED BY SUCH AGREEMENT WILL
   8  * EXPOSE YOU TO LIABILITY.
   9  ***************************************************************************
  10  *
  11  * SHA1.h - generic, portable SHA-1 hash object
  12  *
  13  * Revision History
  14  * ----------------
  15  * 05 Jan 1998  Doug Mitchell at Apple
  16  *      Created.
  17  */
  18
  19 #ifndef _CK_SHA1_H_
  20 #define _CK_SHA1_H_
  21
  22 #ifdef __cplusplus
  23 extern "C" {
  24 #endif
  25
  26 /*
  27  * Opaque sha1 object handle.
  28  */
  29 typedef void *sha1Obj;
  30
  31 /*
  32  * Alloc and init an empty sha1 object.
  33  */
  34 sha1Obj sha1Alloc(void);
  35
  36 /*
  37  * reinitialize an sha1 object for reuse.
  38  */
  39 void sha1Reinit(sha1Obj sha1);
  40
  41 /*
  42  * Free an sha1 object.
  43  */
  44 void sha1Free(sha1Obj sha1);
  45
  46 /*
  47  * Add some data to the sha1 object.
  48  */
  49 void sha1AddData(sha1Obj sha1,
  50         const unsigned char *data,
  51         unsigned dataLen);
  52
  53 /*
  54  * Obtain a pointer to completed message digest. This disables further calls
  55  * to sha1AddData(). This pointer is NOT malloc'd; the associated data
  56  * persists only as long as this object does.
  57  */
  58 unsigned char *sha1Digest(sha1Obj sha1);
  59
  60 /* As above, with copy. */
  61 void sha1GetDigest(sha1Obj sha1,
  62         unsigned char *digest);
  63
  64 /*
  65  * Obtain the length of the message digest.
  66  */
  67 unsigned sha1DigestLen(void);
  68
  69 #ifdef __cplusplus
  70 }
  71 #endif
  72
  73 #endif  /*_CK_SHA1_H_*/