import CryptoES from 'crypto-es';
export declare const convertWordArrayToUint8Array: (wordArray: CryptoES.lib.WordArray) => Uint8Array;
export declare const rollingHash: (inp: string) => number;
/**
 * <span style="color:purple"><strong>This is the function for encrypting a given chunk</strong></span>
 */
export declare const encryption: (chunk: CryptoES.lib.WordArray, ivStr: string, keyStr: string) => Promise<{
    encryptedFile: CryptoES.lib.WordArray;
    hash: string;
    rollingHash: number;
}>;