olm/lib/curve25519-donna/speed-curve25519.c

50 lines
926 B
C

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