/**
 * SHA-512, supporting hex, base64, crypt and HMAC hashes
 * @preferred
 */
export declare module sha512 {
    /**
     * Compute SHA-512 hash compatible with crypt implementation (`mkpasswd --method=sha-512`)
     * @param input - Input string to be hashed
     * @param salt - Salt to be used with algorithm. Salt length must be between 8 and 16 characters. Can contain magic prefix. Eg. param `$6$rounds=1000$saltvalue` Will use rounds decreased from default 5000 to 1000 and salt = `saltvalue`
     * @throws Error if input values validation fails
     */
    const crypt: (input: string, salt: string) => string;
    /**
     * Compute SHA-512 hash with hexadecimal output
     * @param input - Input string to be hashed
     */
    const hex: (input: string) => string;
    /**
     * Compute SHA-512 hash with base64 output
     * @param input - Input string to be hashed
     */
    const base64: (input: string) => string;
    /**
     * Compute SHA-512 hash with custom alphabet
     * @param input - Input string to be hashed
     * @param alphabet - Custom alphabet to build result hash
     */
    const any: (input: string, alphabet: string) => string;
    /**
     * Compute SHA-512 hash as hexadecimal with HMAC digest
     * @param key - HMAC key
     * @param data - Input data to be hashed
     */
    const hexHmac: (key: string, data: string) => string;
    /**
     * Compute SHA-512 hash as base64 with HMAC digest
     * @param key - HMAC key
     * @param data - Input data to be hashed
     */
    const base64Hmac: (key: string, data: string) => string;
    /**
     * Compute SHA-512 hash with HMAC digest and custom alphabet
     * @param key - HMAC key
     * @param data - Input data to be hashed
     * @param alphabet
     */
    const anyHmac: (key: string, data: string, alphabet: string) => string;
    /**
     * Set padding character for base64 output. Set `=` to be strictly compliant with RFC-4648.
     * Default padding is empty string.
     * This is global per-module option.
     * @param b64pad - Base64 padding character
     */
    function setBase64Padding(b64pad?: string): void;
    /**
     * Set HexCase for hex based methods.
     * Default is false.
     * This is global per-module option.
     * @param uppercase - true for uppercase output, false for lowercase output.
     */
    function setHexCase(uppercase?: boolean): void;
}