import { HandlerSync } from '../types/sqnfa';
import { Result } from '../result';
export declare class Sha512Handler implements HandlerSync {
    readonly name: string;
    /**
     * NIST 800-107: Some applications may require a value that
     * is shorter than the (full-length) message digest provided
     * by an approved hash function as specified in FIPS 180-4.
     * In such cases, it may be appropriate to use a subset of the
     * bits produced by the hash function as the (shortened) message
     * digest.
     *
     * This handler calculates the SHA512/432 of the password and encode
     * the result in base64. This makes the encoded digest 72 bytes
     * making it fit perfectly into bcrypt.
     */
    constructor();
    handleSync(password: string): Result;
}