51 lines
926 B
C
51 lines
926 B
C
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#include <stdio.h>
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#include <string.h>
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#include <sys/time.h>
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#include <time.h>
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#include <stdint.h>
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typedef uint8_t u8;
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extern void curve25519_donna(u8 *output, const u8 *secret, const u8 *bp);
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static uint64_t
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time_now() {
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struct timeval tv;
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uint64_t ret;
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gettimeofday(&tv, NULL);
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ret = tv.tv_sec;
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ret *= 1000000;
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ret += tv.tv_usec;
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return ret;
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}
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int
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main() {
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static const unsigned char basepoint[32] = {9};
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unsigned char mysecret[32], mypublic[32];
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unsigned i;
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uint64_t start, end;
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memset(mysecret, 42, 32);
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mysecret[0] &= 248;
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mysecret[31] &= 127;
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mysecret[31] |= 64;
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// Load the caches
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for (i = 0; i < 1000; ++i) {
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curve25519_donna(mypublic, mysecret, basepoint);
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}
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start = time_now();
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for (i = 0; i < 30000; ++i) {
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curve25519_donna(mypublic, mysecret, basepoint);
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}
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end = time_now();
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printf("%luus\n", (unsigned long) ((end - start) / 30000));
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return 0;
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}
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