release/src/router/dnscrypt/src/libnacl/crypto_onetimeauth/measure.c

   1 #include "crypto_onetimeauth.h"
   2 #include "randombytes.h"
   3 #include "cpucycles.h"
   4
   5 extern void printentry(long long,const char *,long long *,long long);
   6 extern unsigned char *alignedcalloc(unsigned long long);
   7 extern const char *primitiveimplementation;
   8 extern const char *implementationversion;
   9 extern const char *sizenames[];
  10 extern const long long sizes[];
  11 extern void allocate(void);
  12 extern void measure(void);
  13
  14 const char *primitiveimplementation = crypto_onetimeauth_IMPLEMENTATION;
  15 const char *implementationversion = crypto_onetimeauth_VERSION;
  16 const char *sizenames[] = { "outputbytes", "keybytes", 0 };
  17 const long long sizes[] = { crypto_onetimeauth_BYTES, crypto_onetimeauth_KEYBYTES };
  18
  19 #define MAXTEST_BYTES 4096
  20 #ifdef SUPERCOP
  21 #define MGAP 8192
  22 #else
  23 #define MGAP 8
  24 #endif
  25
  26 static unsigned char *k;
  27 static unsigned char *m;
  28 static unsigned char *h;
  29
  30 void preallocate(void)
  31 {
  32 }
  33
  34 void allocate(void)
  35 {
  36   k = alignedcalloc(crypto_onetimeauth_KEYBYTES);
  37   m = alignedcalloc(MAXTEST_BYTES);
  38   h = alignedcalloc(crypto_onetimeauth_BYTES);
  39 }
  40
  41 #define TIMINGS 15
  42 static long long cycles[TIMINGS + 1];
  43
  44 void measure(void)
  45 {
  46   int i;
  47   int loop;
  48   int mlen;
  49
  50   for (loop = 0;loop < LOOPS;++loop) {
  51     for (mlen = 0;mlen <= MAXTEST_BYTES;mlen += 1 + mlen / MGAP) {
  52       randombytes(k,crypto_onetimeauth_KEYBYTES);
  53       randombytes(m,mlen);
  54       randombytes(h,crypto_onetimeauth_BYTES);
  55       for (i = 0;i <= TIMINGS;++i) {
  56         cycles[i] = cpucycles();
  57         crypto_onetimeauth(h,m,mlen,k);
  58       }
  59       for (i = 0;i < TIMINGS;++i) cycles[i] = cycles[i + 1] - cycles[i];
  60       printentry(mlen,"cycles",cycles,TIMINGS);
  61       for (i = 0;i <= TIMINGS;++i) {
  62         cycles[i] = cpucycles();
  63         crypto_onetimeauth_verify(h,m,mlen,k);
  64       }
  65       for (i = 0;i < TIMINGS;++i) cycles[i] = cycles[i + 1] - cycles[i];
  66       printentry(mlen,"verify_cycles",cycles,TIMINGS);
  67     }
  68   }
  69 }