1
2#define TEST_NAME "box8"
3#include "cmptest.h"
4
5static unsigned char alicesk[crypto_box_SECRETKEYBYTES];
6static unsigned char alicepk[crypto_box_PUBLICKEYBYTES];
7static unsigned char bobsk[crypto_box_SECRETKEYBYTES];
8static unsigned char bobpk[crypto_box_PUBLICKEYBYTES];
9static unsigned char n[crypto_box_NONCEBYTES];
10
11int
12main(void)
13{
14    unsigned char *m;
15    unsigned char *c;
16    unsigned char *m2;
17    size_t         mlen;
18    size_t         mlen_max = 1000;
19    size_t         i;
20    int            faults;
21    int            ret;
22
23    m  = (unsigned char *) sodium_malloc(mlen_max);
24    c  = (unsigned char *) sodium_malloc(mlen_max);
25    m2 = (unsigned char *) sodium_malloc(mlen_max);
26    crypto_box_keypair(alicepk, alicesk);
27    crypto_box_keypair(bobpk, bobsk);
28    for (mlen = 0; mlen + crypto_box_ZEROBYTES <= mlen_max; mlen++) {
29        randombytes_buf(n, crypto_box_NONCEBYTES);
30        randombytes_buf(m + crypto_box_ZEROBYTES, mlen);
31        ret = crypto_box(c, m, mlen + crypto_box_ZEROBYTES, n, bobpk, alicesk);
32        assert(ret == 0);
33#ifdef BROWSER_TESTS
34        faults = 1;
35#else
36        faults = 5;
37#endif
38        while (faults > 0) {
39            c[rand() % (mlen + crypto_box_ZEROBYTES)] = rand();
40            if (crypto_box_open(m2, c, mlen + crypto_box_ZEROBYTES, n, alicepk,
41                                bobsk) == 0) {
42                for (i = 0; i < mlen + crypto_box_ZEROBYTES; ++i) {
43                    if (m2[i] != m[i]) {
44                        printf("forgery\n");
45                        return 100;
46                    }
47                }
48            } else {
49                faults--;
50            }
51        }
52    }
53    sodium_free(m);
54    sodium_free(c);
55    sodium_free(m2);
56
57    return 0;
58}
59