export declare const HASH_METHODS: {
    readonly md5: typeof md5;
    readonly sha512: typeof sha512;
    readonly sha384: typeof sha384;
    readonly sha256: typeof sha256;
    readonly sha224: typeof sha224;
    readonly sha1: typeof sha1;
};
export type HashMethod = keyof typeof HASH_METHODS;
export declare function rand(): number;
export declare function hmac(key: string, message: string | Buffer, algorithm?: string): string;
export declare function pbkdf2(salt: string, password: string, iterations: number, keyLength: number, digest?: string): string;
export declare function md5(value: string): string;
export declare function sha512(value: string): string;
export declare function sha384(value: string): string;
export declare function sha256(value: string): string;
export declare function sha224(value: string): string;
export declare function sha1(value: string): string;
export declare function genRandomNumbers(length: number): string;
export declare function genRandomAlphaNumbers(length: number): string;
export declare function genRandomSalt(length: number): string;
export declare function genRandomBytes(length?: number): Buffer;
export declare function uuidv4(): string;
export declare function constantEquals(a: string, b: string): boolean;
export type JwtAlgorithm = "HS256" | "HS384" | "HS512" | "none";
export declare const jwtAlgorithms: Record<JwtAlgorithm, {
    sign: (key: string, segments: string[]) => string;
    verify: (key: string, segments: string[]) => boolean;
}>;
export declare function jwtCanonicalAlgorithmName(algorithm: string): JwtAlgorithm;
export declare function jwtEncode(key: string, message: unknown, algorithm: JwtAlgorithm): string;
export declare function jwtDecode(key: string, token: string, noVerify: boolean): Record<string, unknown> | null;
export declare function hotpGenerate(key: string, counter?: number): string;
export declare function hotpVerify(token: string, key: string, counter?: number, window?: number): {
    delta: number;
} | null;
export declare function totpGenerate(key: string, step?: number): string;
export declare function totpVerify(token: string, key: string, step?: number, window?: number): {
    delta: number;
} | null;
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