/**
 * Enhanced Security Utilities for TONL
 * Backward compatible security validation and protection
 */
import { SecurityLimits, DEFAULT_SECURITY_LIMITS } from './security-limits.js';
export type { SecurityLimits };
export { DEFAULT_SECURITY_LIMITS };
/**
 * Regex Security Validator
 * Provides enhanced protection against ReDoS attacks
 */
export declare class RegexValidator {
    private static readonly DANGEROUS_PATTERNS;
    private static readonly DANGEROUS_SEQUENCES;
    /**
     * Validate regex pattern for security vulnerabilities
     * @param pattern - The regex pattern to validate
     * @param limits - Security limits to apply
     * @throws SecurityError if pattern is dangerous
     */
    static validateRegexPattern(pattern: string, limits?: SecurityLimits): void;
    /**
     * Calculate regex pattern nesting depth
     * @param pattern - The regex pattern to analyze
     * @returns The nesting depth
     */
    private static calculateNestingDepth;
}
/**
 * Input Security Validator
 * Provides comprehensive input validation
 */
export declare class InputValidator {
    /**
     * Validate input size and complexity
     * @param input - The input to validate
     * @param limits - Security limits to apply
     * @throws SecurityError if input is too large or complex
     */
    static validateInput(input: string, limits?: SecurityLimits): void;
    /**
     * Validate nesting depth in JSON-like structure
     * @param input - The input to validate
     * @param limits - Security limits to apply
     * @throws SecurityError if nesting is too deep
     */
    static validateNestingDepth(input: string, limits?: SecurityLimits): void;
}
/**
 * Security utilities for safe operations
 */
export declare class SecurityUtils {
    /**
     * Safe JSON parsing with ReDoS protection
     * @param input - The JSON string to parse
     * @param limits - Security limits to apply
     * @returns Parsed JSON object
     * @throws SecurityError if input is malicious
     */
    static safeJsonParse(input: string, limits?: SecurityLimits): any;
    /**
     * Validate file path for security
     * @param path - The file path to validate
     * @throws SecurityError if path is dangerous
     */
    static validateFilePath(path: string): void;
    /**
     * Sanitize user input for safe processing
     * @param input - The input to sanitize
     * @returns Sanitized input
     */
    static sanitizeInput(input: string): string;
}
//# sourceMappingURL=security.d.ts.map