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

   1 #include <stdlib.h>
   2 #include "randombytes.h"
   3 #include "cpucycles.h"
   4 #include "crypto_sign.h"
   5
   6 extern void printentry(long long,const char *,long long *,long long);
   7 extern unsigned char *alignedcalloc(unsigned long long);
   8 extern const char *primitiveimplementation;
   9 extern const char *implementationversion;
  10 extern const char *sizenames[];
  11 extern const long long sizes[];
  12 extern void allocate(void);
  13 extern void measure(void);
  14
  15 const char *primitiveimplementation = crypto_sign_IMPLEMENTATION;
  16 const char *implementationversion = crypto_sign_VERSION;
  17 const char *sizenames[] = { "outputbytes", "publickeybytes", "secretkeybytes", 0 };
  18 const long long sizes[] = { crypto_sign_BYTES, crypto_sign_PUBLICKEYBYTES, crypto_sign_SECRETKEYBYTES };
  19
  20 #define MAXTEST_BYTES 100000
  21
  22 static unsigned char *pk;
  23 static unsigned char *sk;
  24 static unsigned char *m; unsigned long long mlen;
  25 static unsigned char *sm; unsigned long long smlen;
  26 static unsigned char *t; unsigned long long tlen;
  27
  28 void preallocate(void)
  29 {
  30 #ifdef RAND_R_PRNG_NOT_SEEDED
  31   RAND_status();
  32 #endif
  33 }
  34
  35 void allocate(void)
  36 {
  37   pk = alignedcalloc(crypto_sign_PUBLICKEYBYTES);
  38   sk = alignedcalloc(crypto_sign_SECRETKEYBYTES);
  39   m = alignedcalloc(MAXTEST_BYTES + crypto_sign_BYTES);
  40   sm = alignedcalloc(MAXTEST_BYTES + crypto_sign_BYTES);
  41   t = alignedcalloc(MAXTEST_BYTES + crypto_sign_BYTES);
  42 }
  43
  44 #define TIMINGS 31
  45 static long long cycles[TIMINGS + 1];
  46 static long long bytes[TIMINGS + 1];
  47
  48 void measure(void)
  49 {
  50   int i;
  51   int loop;
  52
  53   for (loop = 0;loop < LOOPS;++loop) {
  54     for (i = 0;i <= TIMINGS;++i) {
  55       cycles[i] = cpucycles();
  56       crypto_sign_keypair(pk,sk);
  57     }
  58     for (i = 0;i < TIMINGS;++i) cycles[i] = cycles[i + 1] - cycles[i];
  59     printentry(-1,"keypair_cycles",cycles,TIMINGS);
  60
  61     for (mlen = 0;mlen <= MAXTEST_BYTES;mlen += 1 + mlen / 4) {
  62       randombytes(m,mlen);
  63
  64       for (i = 0;i <= TIMINGS;++i) {
  65         cycles[i] = cpucycles();
  66         bytes[i] = crypto_sign(sm,&smlen,m,mlen,sk);
  67         if (bytes[i] == 0) bytes[i] = smlen;
  68       }
  69       for (i = 0;i < TIMINGS;++i) cycles[i] = cycles[i + 1] - cycles[i];
  70       printentry(mlen,"cycles",cycles,TIMINGS);
  71       printentry(mlen,"bytes",bytes,TIMINGS);
  72
  73       for (i = 0;i <= TIMINGS;++i) {
  74         cycles[i] = cpucycles();
  75         bytes[i] = crypto_sign_open(t,&tlen,sm,smlen,pk);
  76         if (bytes[i] == 0) bytes[i] = tlen;
  77       }
  78       for (i = 0;i < TIMINGS;++i) cycles[i] = cycles[i + 1] - cycles[i];
  79       printentry(mlen,"open_cycles",cycles,TIMINGS);
  80       printentry(mlen,"open_bytes",bytes,TIMINGS);
  81     }
  82   }
  83 }