import { type PasswordPolicy, type PasswordRuleId } from '../password-policy.js';
import type { PasswordConfig } from '../types.js';
export declare const PBKDF2_ITERATIONS = 600000;
export declare function hashPassword(password: string, config?: PasswordConfig): Promise<string>;
export interface PasswordVerifyResult {
    valid: boolean;
    needsRehash: boolean;
}
export declare function verifyPassword(password: string, hash: string): Promise<boolean>;
export declare function verifyPasswordWithMigration(password: string, hash: string, config?: PasswordConfig): Promise<PasswordVerifyResult>;
/** English prose for one failed rule, measured against `policy`. */
export declare function passwordRuleMessage(rule: PasswordRuleId, policy: PasswordPolicy): string;
export declare function validatePasswordStrength(password: string, config?: PasswordConfig): string[];