export declare class SecureCellSeal {
    protected masterKey: Uint8Array;
    constructor(masterKey: Uint8Array);
    /**
     * Makes a new Secure Cell in Seal mode with given master key.
     *
     * @param masterKey     non-empty array of master key bytes (Buffer or Uint8Array)
     *
     * @returns a new instance of SecureCellSeal.
     *
     * @throws TypeError if the master key is not a byte buffer.
     * @throws ThemisError if the master key is empty.
     */
    static withKey(masterKey: Uint8Array): SecureCellSeal;
    /**
     * Makes a new Secure Cell in Seal mode with given passphrase.
     *
     * @param passphrase    non-empty string with passphrase,
     *                      or a non-empty raw byte array (Buffer or Uint8Array)
     *
     * @returns a new instance of SecureCellSeal.
     *
     * @throws TypeError if the passphrase is not a string or a byte buffer.
     * @throws ThemisError if the passphrase is empty.
     */
    static withPassphrase(passphrase: string): SecureCellSealWithPassphrase;
    encrypt(message: Uint8Array, context?: Uint8Array): Uint8Array;
    decrypt(message: Uint8Array, context?: Uint8Array): Uint8Array;
}
declare class SecureCellSealWithPassphrase extends SecureCellSeal {
    constructor(passphrase: string);
    encrypt(message: Uint8Array, context?: Uint8Array): Uint8Array;
    decrypt(message: Uint8Array, context?: Uint8Array): Uint8Array;
}
export {};