/**
 * Security configuration and constants for MCP WordPress
 */
export declare const SecurityConfig: {
    rateLimiting: {
        default: {
            windowMs: number;
            maxRequests: number;
        };
        authentication: {
            windowMs: number;
            maxAttempts: number;
        };
        upload: {
            windowMs: number;
            maxRequests: number;
        };
    };
    fileUpload: {
        maxSizeMB: number;
        allowedMimeTypes: string[];
        blockedExtensions: string[];
    };
    validation: {
        maxStringLength: number;
        maxTitleLength: number;
        maxContentLength: number;
        maxExcerptLength: number;
        maxUrlLength: number;
        maxUsernameLength: number;
        minUsernameLength: number;
        maxPasswordLength: number;
        minPasswordLength: number;
    };
    timeouts: {
        default: number;
        upload: number;
        auth: number;
    };
    headers: {
        "X-Content-Type-Options": string;
        "X-Frame-Options": string;
        "X-XSS-Protection": string;
        "Strict-Transport-Security": string;
        "Content-Security-Policy": string;
    };
    errorMessages: {
        authentication: string;
        authorization: string;
        validation: string;
        rateLimit: string;
        serverError: string;
        notFound: string;
    };
    logging: {
        excludeFields: string[];
        redactPatterns: RegExp[];
    };
    cache: {
        enabled: boolean;
        maxSize: number;
        defaultTTL: number;
        enableLRU: boolean;
        enableStats: boolean;
        ttlPresets: {
            static: number;
            semiStatic: number;
            dynamic: number;
            session: number;
            realtime: number;
        };
        cacheHeaders: {
            static: string;
            semiStatic: string;
            dynamic: string;
            session: string;
            realtime: string;
        };
        invalidation: {
            enabled: boolean;
            batchSize: number;
            queueTimeout: number;
            enableCascading: boolean;
        };
        cleanup: {
            interval: number;
            maxMemoryMB: number;
            evictionThreshold: number;
        };
    };
};
/**
 * Security utility functions
 */
export declare class SecurityUtils {
    /**
     * Redact sensitive information from objects
     */
    static redactSensitiveData(obj: unknown): unknown;
    /**
     * Redact sensitive patterns from strings
     */
    static redactString(str: string): string;
    /**
     * Generate secure random strings
     */
    static generateSecureToken(length?: number): string;
    /**
     * Check if a file extension is allowed
     */
    static isFileExtensionAllowed(filename: string): boolean;
    /**
     * Sanitize log output
     */
    static sanitizeForLog(data: unknown): unknown;
}
/**
 * Secure error handler that prevents information disclosure
 */
export declare function createSecureError(error: unknown, fallbackMessage?: string): Error;
/**
 * Environment-specific security settings
 */
export declare function getEnvironmentSecurity(): {
    strictMode: boolean;
    verboseErrors: boolean;
    enforceHttps: boolean;
};
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