FreeBSD/Linux Kernel Cross Reference
sys/contrib/libsodium/test/default/secretbox8.c

     
     #define TEST_NAME "secretbox8"
     #include "cmptest.h"
     
     static unsigned char k[crypto_secretbox_KEYBYTES];
     static unsigned char n[crypto_secretbox_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;
    
        for (mlen = 0; mlen < 1000 && mlen + crypto_secretbox_ZEROBYTES < sizeof m;
             ++mlen) {
            crypto_secretbox_keygen(k);
            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;
    }

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