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box8.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]; int main(void) { unsigned char *m; unsigned char *c; unsigned char *m2; size_t mlen; size_t mlen_max = 1000; size_t i; int faults; int ret; m = (unsigned char *) sodium_malloc(mlen_max); c = (unsigned char *) sodium_malloc(mlen_max); m2 = (unsigned char *) sodium_malloc(mlen_max); crypto_box_keypair(alicepk, alicesk); crypto_box_keypair(bobpk, bobsk); for (mlen = 0; mlen + crypto_box_ZEROBYTES <= mlen_max; mlen++) { 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); #ifdef BROWSER_TESTS faults = 1; #else faults = 5; #endif while (faults > 0) { 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 { faults--; } } } sodium_free(m); sodium_free(c); sodium_free(m2); return 0; }