import { type TArg, type TRet } from "@noble/hashes/utils.js";
export declare const xor: (a: TArg<Uint8Array>, b: TArg<Uint8Array>) => TRet<Uint8Array>;
export declare const hexToNumber: (hex: string) => bigint;
export declare const bytesToNumberBE: (bytes: Uint8Array) => bigint;
export declare const numberToBytesBE: (n: number | bigint, len: number) => Uint8Array;