import { HashTypes } from './typedef';
type OaepParams = {
    k: number;
    label: Uint8Array;
    hash: HashTypes;
    mLen: number;
    cLen: number;
};
/**
 * Check OAEP length
 * @param {String} mode - 'encrypt' or 'decrypt'
 * @param {Number} k - Octet length of modulus length, i.e., n.
 * @param {Uint8Array} label - OAEP label.
 * @param {String} hash - Name of hash function.
 * @param {Number} mLen - Octet length of message to be encrypted.
 * @param {Number} cLen - the length of ciphertext
 * @throws {Error} - Throws if LabelTooLong, MessageTooLong, DecryptionError or InvalidMode.
 */
export declare const checkLength: (mode: 'encrypt' | 'decrypt', { k, label, hash, mLen, cLen }: OaepParams) => void;
/**
 * OAEP Encoder
 * @param {Uint8Array} msg - Message.
 * @param {Uint8Array} label - Label.
 * @param {Number} k - Octet length of modulus length, i.e., n.
 * @param {String} hash - Name of hash function.
 * @return {Promise<Uint8Array>} - OAEP encoded message.
 */
export declare const emeOaepEncode: (msg: Uint8Array, label: Uint8Array, k: number, hash?: HashTypes) => Promise<Uint8Array>;
/**
 * OAEP Decoder
 * @param {Uint8Array} em - OAEP encoded message.
 * @param {Uint8Array} label - Label.
 * @param {Number} k - Octet length of modulus length, i.e., n.
 * @param {String} hash - Name of hash function.
 * @return {Promise<Uint8Array>} - OAEP decoded message.
 * @throws {Error} - Throws if DecryptionError.
 */
export declare const emeOaepDecode: (em: Uint8Array, label: Uint8Array, k: number, hash?: HashTypes) => Promise<Uint8Array>;
export {};