libsodium/test/default/generichash2.c

#include "crypto_uint8.h"

#define TEST_NAME "generichash2"
#include "cmptest.h"

int main(void)
{
#define MAXLEN 64
    crypto_generichash_state st;
    crypto_uint8 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_init(&st, k, 1 + i % crypto_generichash_KEYBYTES_MAX,
                                1 + i % crypto_generichash_BYTES_MAX);
        crypto_generichash_update(&st, in, i);
        crypto_generichash_update(&st, in, i);
        crypto_generichash_update(&st, in, i);
        crypto_generichash_final(&st, out, 1 + i % crypto_generichash_BYTES_MAX);
        for (j = 0;j < 1 + i % crypto_generichash_BYTES_MAX;++j) {
            printf("%02x",(unsigned int) out[j]);
        }
        printf("\n");
    }
    return 0;
}