/**
 * @license
 * Copyright 2020 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { PbKeyTemplate } from '../internal/proto';
/**
 * Pre-generated KeyTemplates for AES GCM keys.
 *
 * @final
 */
export declare class AesGcmKeyTemplates {
    /**
     * Returns a KeyTemplate that generates new instances of AesGcmKey
     * with the following parameters:
     *    key size: 16 bytes
     *    OutputPrefixType: TINK
     *
     */
    static aes128Gcm(): PbKeyTemplate;
    /**
     * Returns a KeyTemplate that generates new instances of AesGcmKey
     * with the following parameters:
     *    key size: 32 bytes
     *    OutputPrefixType: TINK
     *
     */
    static aes256Gcm(): PbKeyTemplate;
    /**
     * Returns a KeyTemplate that generates new instances of AesGcmKey
     * with the following parameters:
     *     key size: 32 bytes
     *     OutputPrefixType: RAW
     *
     */
    static aes256GcmNoPrefix(): PbKeyTemplate;
    private static newAesGcmKeyTemplate;
}