What is CSRF (Cross-Site Request Forgery)?

CSRF is an attack that forces authenticated users to submit unwanted requests to a web application where they're currently logged in. CSRF tokens help prevent these attacks by requiring a unique, unpredictable value with each request.

How do CSRF tokens work?

CSRF tokens are unique, random values generated for each session or form submission. When a form is submitted, the server validates that the token matches the one associated with the user's session, ensuring the request came from a legitimate source.

What makes a good CSRF token?

A good CSRF token should be: random and unpredictable, unique per session/request, sufficiently long (at least 32 bytes), cryptographically secure, and time-limited. It should also be validated server-side before processing any request.

Where should I include CSRF tokens?

CSRF tokens should be included in all state-changing requests (POST, PUT, DELETE) through either a hidden form field, custom HTTP header, or as part of the request body. They should never be included in URLs as they might be leaked through Referer headers.

How long should CSRF tokens be valid?

Token validity period depends on your security requirements. Common practices include: per-request tokens (most secure), per-session tokens, or time-limited tokens (e.g., 1-24 hours). Shorter validity periods provide better security but may impact user experience.

CSRF Token Generator

Generate secure CSRF tokens for your web applications. Get implementation examples for popular frameworks and learn about CSRF protection best practices. Create random, timestamp-based, or HMAC tokens with configurable expiry times.

CSRF Token Generator

About CSRF Tokens

Cross-Site Request Forgery (CSRF) tokens protect your web applications by ensuring that requests come from legitimate users and not from malicious sites.

Always validate tokens server-side and transmit them securely using HTTPS.

Token Types

Random Token

Generates a completely random string using cryptographically secure random values. These tokens are unpredictable and suitable for most CSRF protection needs.

Timestamp-Based

Combines a timestamp with random data to create a token that can be validated for freshness. Useful when you need to enforce token age limitations.

HMAC-Based

Uses a Hash-based Message Authentication Code approach to generate tokens that can be cryptographically verified. Best for high-security applications.

Expiry Times

15m

15 minutes - For sensitive operations that should be completed quickly

1 hour - Standard for most web applications

24h

24 hours - For longer user sessions

7 days - For extended access needs

Features

A comprehensive tool for generating and implementing CSRF tokens in your web applications.

Secure Generation

Cryptographically secure random token generation

Configurable Expiry

Set custom token expiration times

Implementation Examples

Ready-to-use code for popular frameworks

Multiple Token Types

Support for various token generation methods

Framework Support

Examples for multiple server frameworks

Token Rotation

Easy token regeneration and management

Security Best Practices

Built-in security recommendations

Educational Resources

Learn about CSRF protection implementation

How to Use the CSRF Token Generator

Step 1

Generate a secure CSRF token with your preferred settings

Step 2

Copy the implementation code for your framework

Step 3

Implement token validation in your application

Step 4

Rotate tokens based on your security requirements

Frequently Asked Questions about CSRF Tokens

More Security Tools

Password Generator

Generate strong passwords and check their strength.

MD5 Generator

Generate MD5 hashes from text.

SSL Certificate Checker

Verify SSL certificates to ensure website security. Check validity, expiration, encryption strength, and more.

HTTP Header Analyzer

Analyze HTTP headers for security and performance. Get detailed insights and actionable recommendations.

Bcrypt Hash Generator

Generate secure bcrypt password hashes effortlessly. Customize cost factors and verify hashes with ease.

Credit Card Validator

Validate credit card numbers using the Luhn algorithm.