OSX/libsecurity_cryptkit/lib/byteRep.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  * byteRep.h - FEE portable byte representation support
  12  *
  13  * Revision History
  14  * ----------------
  15  * 17 Jul 97 at Apple
  16  *      Added signature routines.
  17  *  9 Jan 97 at NeXT
  18  *      Split off from ckutilities.h
  19  */
  20
  21 #ifndef _CK_BYTEREP_H_
  22 #define _CK_BYTEREP_H_
  23
  24 #include "feeTypes.h"
  25 #include "giantIntegers.h"
  26 #include "elliptic.h"
  27 #include "curveParams.h"
  28
  29 #ifdef __cplusplus
  30 extern "C" {
  31 #endif
  32
  33 /*
  34  * Support for bytestream key and signature representation.
  35  */
  36 int intToByteRep(int i, unsigned char *buf);
  37 int shortToByteRep(short s, unsigned char *buf);
  38 int giantToByteRep(giant g, unsigned char *buf);
  39 int keyToByteRep(key k, unsigned char *buf);
  40 int curveParamsToByteRep(curveParams *cp, unsigned char *buf);
  41 int sigToByteRep(int magic,
  42         int version,
  43         int minVersion,
  44         giant g0,
  45         giant g1,
  46         unsigned char *buf);
  47
  48 int lengthOfByteRepGiant(giant g);
  49 int lengthOfByteRepKey(key k);
  50 int lengthOfByteRepCurveParams(curveParams *cp);
  51 int lengthOfByteRepSig(giant g0,
  52         giant g1);
  53
  54 int byteRepToInt(const unsigned char *buf);
  55 unsigned short byteRepToShort(const unsigned char *buf);
  56 giant byteRepToGiant(const unsigned char *buf,
  57         unsigned bufLen,
  58         unsigned *giantLen);
  59 key byteRepToKey(const unsigned char *buf,
  60         unsigned bufLen,
  61         int twist,
  62         curveParams *cp,
  63         unsigned *keyLen);      // returned
  64 curveParams *byteRepToCurveParams(const unsigned char *buf,
  65         unsigned bufLen,
  66         unsigned *cpLen);
  67 int byteRepToSig(const unsigned char *buf,
  68         unsigned bufLen,
  69         int codeVersion,
  70         int *sigMagic,                          // RETURNED
  71         int *sigVersion,                        // RETURNED
  72         int *sigMinVersion,                     // RETURNED
  73         giant *g0,                                      // alloc'd  & RETURNED
  74         giant *g1);                                     // alloc'd  & RETURNED
  75
  76 #ifdef __cplusplus
  77 }
  78 #endif
  79
  80 #endif  /*_CK_BYTEREP_H_*/