libsodium/test/default/auth2.c

/* "Test Case AUTH256-4" from RFC 4868 */

#define TEST_NAME "auth2"
#include "cmptest.h"

unsigned char key[32]
    = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
        0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
        0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20 };

unsigned char c[50]
    = { 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd,
        0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd,
        0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd,
        0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd,
        0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd };

unsigned char a[32];

int main(void)
{
    int i;

    crypto_auth_hmacsha256(a, c, sizeof c, key);
    for (i = 0; i < 32; ++i) {
        printf(",0x%02x", (unsigned int)a[i]);
        if (i % 8 == 7)
            printf("\n");
    }
    return 0;
}