1
2#define TEST_NAME "secretbox8"
3#include "cmptest.h"
4
5static unsigned char k[crypto_secretbox_KEYBYTES];
6static unsigned char n[crypto_secretbox_NONCEBYTES];
7static unsigned char m[10000];
8static unsigned char c[10000];
9static unsigned char m2[10000];
10
11int
12main(void)
13{
14    size_t mlen;
15    size_t i;
16    int    caught;
17
18    for (mlen = 0; mlen < 1000 && mlen + crypto_secretbox_ZEROBYTES < sizeof m;
19         ++mlen) {
20        crypto_secretbox_keygen(k);
21        randombytes_buf(n, crypto_secretbox_NONCEBYTES);
22        randombytes_buf(m + crypto_secretbox_ZEROBYTES, mlen);
23        crypto_secretbox(c, m, mlen + crypto_secretbox_ZEROBYTES, n, k);
24        caught = 0;
25        while (caught < 10) {
26            c[rand() % (mlen + crypto_secretbox_ZEROBYTES)] = rand();
27            if (crypto_secretbox_open(m2, c, mlen + crypto_secretbox_ZEROBYTES,
28                                      n, k) == 0) {
29                for (i = 0; i < mlen + crypto_secretbox_ZEROBYTES; ++i) {
30                    if (m2[i] != m[i]) {
31                        printf("forgery\n");
32                        return 100;
33                    }
34                }
35            } else {
36                ++caught;
37            }
38        }
39    }
40    return 0;
41}
42