sodium_mbedtls_chacha20.c

sodium_mbedtls_chacha20.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "include/sodium/crypto_stream_chacha20.h"
#include "include/sodium/randombytes.h"
#include "include/mbedtls/chacha20.h"

static void dump(const unsigned char *pData, size_t Len)
{
    for (size_t lp = 0; lp < Len; lp++) {
        printf("%02x", pData[lp]);
    }
    printf("\n");
}

int main(void)
{
    int ret;
    unsigned char result[32];
    unsigned char nonce[8] = { 1, 2, 3, 4, 5, 6, 7, 8 };
    const unsigned char key[32] = {
        0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
        0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
        0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
        0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f
    };
    crypto_stream_chacha20(result, sizeof(result), nonce, key);
    dump(result, sizeof(result));
    memset(result, 0, sizeof(result));

    crypto_stream_chacha20(result, sizeof(result), nonce, key);
    dump(result, sizeof(result));
    memset(result, 0, sizeof(result));

    unsigned char nonce2[12] = { 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8 };
    unsigned char *dummy = (unsigned char *)malloc(sizeof(result));

    memset(dummy, 0, sizeof(result));
    ret = mbedtls_chacha20_crypt(key, nonce2, 0, sizeof(result), dummy, result);
    if (ret) { printf("bad\n"); return -1; }
    dump(result, sizeof(result));

    memset(result, 0, sizeof(result));
    ret = mbedtls_chacha20_crypt(key, nonce2, 0, sizeof(result), dummy, result);
    if (ret) { printf("bad2\n"); return -1; }
    dump(result, sizeof(result));

    free(dummy);

    return 0;
}