import { Key } from "../Types";
export declare class KeyStore {
    private _keys;
    private _encryptionKeyId;
    setKeys(keys: Key[]): void;
    getKey(keyId: string): Promise<CryptoKey | undefined>;
    hasKey(keyId: string): boolean;
    getEncriptionKey(): Promise<CryptoKey>;
    getEncryptionKeyId(): string;
    private assertKeyBytes;
}