libsodium/test/default/generichash.c

#define TEST_NAME "generichash"
#include "cmptest.h"

int main(void)
{
#define MAXLEN 64
    unsigned char in[MAXLEN], out[crypto_generichash_BYTES_MAX],
        k[crypto_generichash_KEYBYTES_MAX];
    size_t h, i, j;

    for (h = 0; h < crypto_generichash_KEYBYTES_MAX; ++h)
        k[h] = h;

    for (i = 0; i < MAXLEN; ++i) {
        in[i] = i;
        crypto_generichash(out, 1 + i % crypto_generichash_BYTES_MAX, in, i, k,
                           1 + i % crypto_generichash_KEYBYTES_MAX);
        for (j = 0; j < 1 + i % crypto_generichash_BYTES_MAX; ++j) {
            printf("%02x", (unsigned int)out[j]);
        }
        printf("\n");
    }

    memset(out, 0, sizeof out);
    crypto_generichash(out, crypto_generichash_BYTES_MAX, in, i, k, 0U);
    for (j = 0; j < crypto_generichash_BYTES_MAX; ++j) {
        printf("%02x", (unsigned int)out[j]);
    }
    printf("\n");

    memset(out, 0, sizeof out);
    crypto_generichash(out, crypto_generichash_BYTES_MAX, in, i, NULL, 1U);
    for (j = 0; j < crypto_generichash_BYTES_MAX; ++j) {
        printf("%02x", (unsigned int)out[j]);
    }
    printf("\n");

    assert(crypto_generichash(out, 0U, in, sizeof in, k, sizeof k) == -1);
    assert(crypto_generichash(out, crypto_generichash_BYTES_MAX + 1U, in, sizeof in,
                              k, sizeof k) == -1);
    assert(crypto_generichash(out, sizeof out, in, sizeof in,
                              k, crypto_generichash_KEYBYTES_MAX + 1U) == -1);

    assert(crypto_generichash_bytes_min() > 0U);
    assert(crypto_generichash_bytes_max() > 0U);
    assert(crypto_generichash_bytes() > 0U);
    assert(crypto_generichash_bytes() >= crypto_generichash_bytes_min());
    assert(crypto_generichash_bytes() <= crypto_generichash_bytes_max());
    assert(crypto_generichash_keybytes_min() > 0U);
    assert(crypto_generichash_keybytes_max() > 0U);
    assert(crypto_generichash_keybytes() > 0U);
    assert(crypto_generichash_keybytes() >= crypto_generichash_keybytes_min());
    assert(crypto_generichash_keybytes() <= crypto_generichash_keybytes_max());
    assert(strcmp(crypto_generichash_primitive(), "blake2b") == 0);
    assert(crypto_generichash_bytes_min()
           == crypto_generichash_blake2b_bytes_min());
    assert(crypto_generichash_bytes_max()
           == crypto_generichash_blake2b_bytes_max());
    assert(crypto_generichash_bytes() == crypto_generichash_blake2b_bytes());
    assert(crypto_generichash_keybytes_min()
           == crypto_generichash_blake2b_keybytes_min());
    assert(crypto_generichash_keybytes_max()
           == crypto_generichash_blake2b_keybytes_max());
    assert(crypto_generichash_keybytes()
           == crypto_generichash_blake2b_keybytes());
    assert(crypto_generichash_blake2b_saltbytes() > 0U);
    assert(crypto_generichash_blake2b_personalbytes() > 0U);

    return 0;
}