export declare const generateNonce: () => string;
export declare const saltPassword: (password: string, salt: string, iterations: number, keyLength: number, digest: string) => Promise<Buffer<ArrayBufferLike>>;
export declare const base64Encode: (input: Buffer) => string;
export declare const base64Decode: (input: string) => string;
export declare const hash: (data: Buffer, digest: string) => Buffer<ArrayBufferLike>;
export declare const hmac: (key: Buffer, data: Buffer | string, digest: string) => Buffer<ArrayBufferLike>;
export declare const xor: (a: Buffer, b: Buffer) => Buffer<ArrayBuffer>;