import { Result } from '../result';
import { HandlerSync } from '../types/sqnfa';
export declare class BlackListConfiguration {
    /**
     * A list of black listed words. Both the password and every words are compared with toLocaleUpperCase.
     */
    readonly caseInsensitiveWords: string[];
    /**
     * The ratio between the length of the password over the length of the black listed word.
     * 0.75 would imply that 6 out of 8 consecutive characters cannot be on the black list.
     */
    readonly ratioThreshold: number;
    /**
     *
     */
    constructor(
    /**
     * A list of black listed words. Both the password and every words are compared with toLocaleUpperCase.
     */
    caseInsensitiveWords: string[], 
    /**
     * The ratio between the length of the password over the length of the black listed word.
     * 0.75 would imply that 6 out of 8 consecutive characters cannot be on the black list.
     */
    ratioThreshold: number);
}
export declare class BlackListHandler implements HandlerSync {
    private readonly config;
    readonly name: string;
    /**
     * NIST 800-63B:
     * Password complexity: Users’ password choices are very predictable,
     * so attackers are likely to guess passwords that have been successful
     * in the past. For this reason, it is recommended that passwords chosen
     * by users be compared against a “black list” of unacceptable passwords.
     * This list should include dictionary words, and specific words (such as
     * the name of the service itself) that users are likely to choose.
     *
     * This handler black lists passwords containing parts of black listed words.
     */
    constructor(config: BlackListConfiguration);
    handleSync(password: string): Result;
}