Exemplos de gcry_mac_reset em C++ (Cpp)

Exemplo n.º 1

Arquivo: bench-slope.c Projeto: 0ndorio/libgcrypt

static void
bench_mac_do_bench (struct bench_obj *obj, void *buf, size_t buflen)
{
  gcry_mac_hd_t hd = obj->priv;
  size_t bs;
  char b;

  gcry_mac_reset (hd);
  gcry_mac_write (hd, buf, buflen);
  bs = sizeof(b);
  gcry_mac_read (hd, &b, &bs);
}

Exemplo n.º 2

Arquivo: hmac-gcrypt.c Projeto: Icenowy/qemu

int qcrypto_hmac_bytesv(QCryptoHmac *hmac,
                        const struct iovec *iov,
                        size_t niov,
                        uint8_t **result,
                        size_t *resultlen,
                        Error **errp)
{
    QCryptoHmacGcrypt *ctx;
    gcry_error_t err;
    uint32_t ret;
    int i;

    ctx = hmac->opaque;

    for (i = 0; i < niov; i++) {
        gcry_mac_write(ctx->handle, iov[i].iov_base, iov[i].iov_len);
    }

    ret = gcry_mac_get_algo_maclen(qcrypto_hmac_alg_map[hmac->alg]);
    if (ret <= 0) {
        error_setg(errp, "Unable to get hmac length: %s",
                   gcry_strerror(ret));
        return -1;
    }

    if (*resultlen == 0) {
        *resultlen = ret;
        *result = g_new0(uint8_t, *resultlen);
    } else if (*resultlen != ret) {
        error_setg(errp, "Result buffer size %zu is smaller than hmac %d",
                   *resultlen, ret);
        return -1;
    }

    err = gcry_mac_read(ctx->handle, *result, resultlen);
    if (err != 0) {
        error_setg(errp, "Cannot get result: %s",
                   gcry_strerror(err));
        return -1;
    }

    err = gcry_mac_reset(ctx->handle);
    if (err != 0) {
        error_setg(errp, "Cannot reset hmac context: %s",
                   gcry_strerror(err));
        return -1;
    }

    return 0;
}