OSX/libsecurity_cryptkit/lib/feeHash.h

   1 /* Copyright (c) 1998,2011,2014 Apple 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, INC. AND THE
   6  * ORIGINAL LICENSEE THAT OBTAINED THESE MATERIALS FROM APPLE,
   7  * INC.  ANY USE OF THESE MATERIALS NOT PERMITTED BY SUCH AGREEMENT WILL
   8  * EXPOSE YOU TO LIABILITY.
   9  ***************************************************************************
  10  *
  11  * FeeHash.h - generic, portable MD5 hash object
  12  *
  13  * Revision History
  14  * ----------------
  15  * 22 Aug 96 at NeXT
  16  *      Created.
  17  */
  18
  19 #ifndef _CK_FEEHASH_H_
  20 #define _CK_FEEHASH_H_
  21
  22 #if     !defined(__MACH__)
  23 #include <ckconfig.h>
  24 #include <feeTypes.h>
  25 #else
  26 #include <security_cryptkit/ckconfig.h>
  27 #include <security_cryptkit/feeTypes.h>
  28 #endif
  29
  30 #ifdef __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 /*
  35  * Opaque hash object handle.
  36  */
  37 typedef void *feeHash;
  38
  39 /*
  40  * Alloc and init an empty hash object.
  41  */
  42 feeHash feeHashAlloc(void);
  43
  44 /*
  45  * reinitialize a hash object for reuse.
  46  */
  47 void feeHashReinit(feeHash hash);
  48
  49 /*
  50  * Free a hash object.
  51  */
  52 void feeHashFree(feeHash hash);
  53
  54 /*
  55  * Add some data to the hash object.
  56  */
  57 void feeHashAddData(feeHash hash,
  58         const unsigned char *data,
  59         unsigned dataLen);
  60
  61 /*
  62  * Obtain a pointer to completed message digest. This disables further calls
  63  * to feeHashAddData(). This pointer is NOT malloc'd; the associated data
  64  * persists only as long as this object does.
  65  */
  66 unsigned char *feeHashDigest(feeHash hash);
  67
  68 /*
  69  * Obtain the length of the message digest.
  70  */
  71 unsigned feeHashDigestLen(void);
  72
  73 #ifdef __cplusplus
  74 }
  75 #endif
  76
  77 #endif  /*_CK_FEEHASH_H_*/