import { TKeyType } from '../types';
export declare abstract class Cypher {
    readonly keyType: TKeyType;
    protected constructor(keyType: TKeyType);
    abstract createSignature(input: Uint8Array): Uint8Array;
    abstract verifySignature(input: Uint8Array, signature: Uint8Array): boolean;
    abstract encryptMessage(input: Uint8Array): Uint8Array;
    abstract decryptMessage(input: Uint8Array): Uint8Array;
}