/**
 * Default encrypter
 */
export declare class Encrypter {
    private readonly encryptionKey;
    private key;
    private keyDigest;
    constructor(encryptionKey: Uint8Array);
    /**
     * Encrypts the given data
     */
    encrypt(data: string): Promise<string>;
}
/**
 * Default decrypter
 */
export declare class Decrypter {
    private readonly decryptionKeys;
    private keys;
    constructor(decryptionKeys: Uint8Array[]);
    /**
     * Decrypts the given data
     */
    decrypt(data: string): Promise<string>;
}