C++ (Cpp) qcrypto_hmac_supports Examples

Example #1

File: hmac-glib.c Project: CTU-IIG/qemu

void *qcrypto_hmac_ctx_new(QCryptoHashAlgorithm alg,
                           const uint8_t *key, size_t nkey,
                           Error **errp)
{
    QCryptoHmacGlib *ctx;

    if (!qcrypto_hmac_supports(alg)) {
        error_setg(errp, "Unsupported hmac algorithm %s",
                   QCryptoHashAlgorithm_str(alg));
        return NULL;
    }

    ctx = g_new0(QCryptoHmacGlib, 1);

    ctx->ghmac = g_hmac_new(qcrypto_hmac_alg_map[alg],
                            (const uint8_t *)key, nkey);
    if (!ctx->ghmac) {
        error_setg(errp, "Cannot initialize hmac and set key");
        goto error;
    }

    return ctx;

error:
    g_free(ctx);
    return NULL;
}

Example #2

File: hmac-gcrypt.c Project: Icenowy/qemu

QCryptoHmac *qcrypto_hmac_new(QCryptoHashAlgorithm alg,
                              const uint8_t *key, size_t nkey,
                              Error **errp)
{
    QCryptoHmac *hmac;
    QCryptoHmacGcrypt *ctx;
    gcry_error_t err;

    if (!qcrypto_hmac_supports(alg)) {
        error_setg(errp, "Unsupported hmac algorithm %s",
                   QCryptoHashAlgorithm_lookup[alg]);
        return NULL;
    }

    hmac = g_new0(QCryptoHmac, 1);
    hmac->alg = alg;

    ctx = g_new0(QCryptoHmacGcrypt, 1);

    err = gcry_mac_open(&ctx->handle, qcrypto_hmac_alg_map[alg],
                        GCRY_MAC_FLAG_SECURE, NULL);
    if (err != 0) {
        error_setg(errp, "Cannot initialize hmac: %s",
                   gcry_strerror(err));
        goto error;
    }

    err = gcry_mac_setkey(ctx->handle, (const void *)key, nkey);
    if (err != 0) {
        error_setg(errp, "Cannot set key: %s",
                   gcry_strerror(err));
        goto error;
    }

    hmac->opaque = ctx;
    return hmac;

error:
    g_free(ctx);
    g_free(hmac);
    return NULL;
}