libsecurity_cryptkit/lib/ellipticMeasure.h

   1 /*
   2         File:           ellipticMeasure.h
   3
   4         Contains:       xxx put contents here xxx
   5
   6         Written by:     Doug Mitchell
   7
   8         Copyright:      Copyright 1998 by Apple Computer, Inc.
   9                 All rights reserved.
  10
  11         Change History (most recent first):
  12
  13         <7>     10/06/98        ap              Changed to compile with C++.
  14
  15         To Do:
  16 */
  17
  18 /* Copyright (c) 1998 Apple Computer, Inc.  All rights reserved.
  19  *
  20  * NOTICE: USE OF THE MATERIALS ACCOMPANYING THIS NOTICE IS SUBJECT
  21  * TO THE TERMS OF THE SIGNED "FAST ELLIPTIC ENCRYPTION (FEE) REFERENCE
  22  * SOURCE CODE EVALUATION AGREEMENT" BETWEEN APPLE COMPUTER, INC. AND THE
  23  * ORIGINAL LICENSEE THAT OBTAINED THESE MATERIALS FROM APPLE COMPUTER,
  24  * INC.  ANY USE OF THESE MATERIALS NOT PERMITTED BY SUCH AGREEMENT WILL
  25  * EXPOSE YOU TO LIABILITY.
  26  ***************************************************************************
  27  *
  28  * Measurement of feemods and mulgs withing an elliptic_simple() call.
  29  */
  30
  31 #include "feeDebug.h"
  32
  33 #ifdef  FEE_DEBUG
  34 #define ELLIPTIC_MEASURE        0
  35 #else   // FEE_DEBUG
  36 #define ELLIPTIC_MEASURE        0       /* always off */
  37 #endif  // FEE_DEBUG
  38
  39 #if     ELLIPTIC_MEASURE
  40
  41 extern int doEllMeasure;        // gather stats on/off */
  42 extern int bitsInN;
  43 extern int numFeeMods;
  44 extern int numMulgs;
  45
  46 #define START_ELL_MEASURE(n)            \
  47         doEllMeasure = 1;               \
  48         bitsInN = bitlen(n);            \
  49         numFeeMods = 0;                 \
  50         numMulgs = 0;
  51
  52 #define END_ELL_MEASURE         doEllMeasure = 0;
  53
  54 #define INCR_FEEMODS                    \
  55         if(doEllMeasure) {              \
  56                 numFeeMods++;           \
  57         }
  58
  59 #define INCR_MULGS                      \
  60         if(doEllMeasure) {              \
  61                 numMulgs++;             \
  62         }
  63
  64 /*
  65  * These two are used around mulg() calls in feemod() itself; they
  66  * inhibit the counting of those mulg() calls.
  67  */
  68 #define PAUSE_ELL_MEASURE                               \
  69         {                                               \
  70                 int tempEllMeasure = doEllMeasure;      \
  71                 doEllMeasure = 0;
  72
  73 #define RESUME_ELL_MEASURE                              \
  74                 doEllMeasure = tempEllMeasure;          \
  75         }
  76
  77 #else   // ELLIPTIC_MEASURE
  78
  79 #define START_ELL_MEASURE(n)
  80 #define END_ELL_MEASURE
  81 #define INCR_FEEMODS
  82 #define INCR_MULGS
  83 #define PAUSE_ELL_MEASURE
  84 #define RESUME_ELL_MEASURE
  85
  86 #endif  // ELLIPTIC_MEASURE