export declare const encodeUtf8: (input?: string) => Uint8Array;
export declare const sanitizeHex: (hex: string) => string;
export declare const bufferToHex: (buffer: ArrayBuffer) => string;
export declare const hexToBuffer: (hex: string) => ArrayBuffer;
export declare const constantTimeEqualHex: (leftHex: string, rightHex: string) => boolean;