#define TEST_NAME "secretbox8" #include "cmptest.h" unsigned char k[crypto_secretbox_KEYBYTES]; unsigned char n[crypto_secretbox_NONCEBYTES]; unsigned char m[10000]; unsigned char c[10000]; unsigned char m2[10000]; int main(void) { size_t mlen; size_t i; int caught; for (mlen = 0; mlen < 1000 && mlen + crypto_secretbox_ZEROBYTES < sizeof m; ++mlen) { randombytes_buf(k, crypto_secretbox_KEYBYTES); randombytes_buf(n, crypto_secretbox_NONCEBYTES); randombytes_buf(m + crypto_secretbox_ZEROBYTES, mlen); crypto_secretbox(c, m, mlen + crypto_secretbox_ZEROBYTES, n, k); caught = 0; while (caught < 10) { c[rand() % (mlen + crypto_secretbox_ZEROBYTES)] = rand(); if (crypto_secretbox_open(m2, c, mlen + crypto_secretbox_ZEROBYTES, n, k) == 0) { for (i = 0; i < mlen + crypto_secretbox_ZEROBYTES; ++i) { if (m2[i] != m[i]) { printf("forgery\n"); return 100; } } } else { ++caught; } } } return 0; }