libsodium/test/default/box8.c
2015-11-23 16:07:13 +01:00

47 lines
1.4 KiB
C

#define TEST_NAME "box8"
#include "cmptest.h"
static unsigned char alicesk[crypto_box_SECRETKEYBYTES];
static unsigned char alicepk[crypto_box_PUBLICKEYBYTES];
static unsigned char bobsk[crypto_box_SECRETKEYBYTES];
static unsigned char bobpk[crypto_box_PUBLICKEYBYTES];
static unsigned char n[crypto_box_NONCEBYTES];
static unsigned char m[10000];
static unsigned char c[10000];
static unsigned char m2[10000];
int main(void)
{
size_t mlen;
size_t i;
int caught;
int ret;
for (mlen = 0; mlen < 1000 && mlen + crypto_box_ZEROBYTES < sizeof m;
++mlen) {
crypto_box_keypair(alicepk, alicesk);
crypto_box_keypair(bobpk, bobsk);
randombytes_buf(n, crypto_box_NONCEBYTES);
randombytes_buf(m + crypto_box_ZEROBYTES, mlen);
ret = crypto_box(c, m, mlen + crypto_box_ZEROBYTES, n, bobpk, alicesk);
assert(ret == 0);
caught = 0;
while (caught < 10) {
c[rand() % (mlen + crypto_box_ZEROBYTES)] = rand();
if (crypto_box_open(m2, c, mlen + crypto_box_ZEROBYTES, n, alicepk,
bobsk) == 0) {
for (i = 0; i < mlen + crypto_box_ZEROBYTES; ++i) {
if (m2[i] != m[i]) {
printf("forgery\n");
return 100;
}
}
} else {
++caught;
}
}
}
return 0;
}