import { KmsClient } from "../kms-registry";
import { GcpCredentials } from "./gcp-driver";
export declare class GcpKmsClient implements KmsClient {
    private kmsClient;
    private keyUri;
    private keyId;
    constructor(keyUri: string, creds?: GcpCredentials);
    supported(keyUri: string): boolean;
    encrypt(plaintext: Buffer): Promise<Buffer>;
    decrypt(ciphertext: Buffer): Promise<Buffer>;
}