$FORM A form crypto token is a cryptographically secure token embedded in a form, primarily used to enhance security by validating that the form submission is legitimate and has not been tampered with.
Definition:
A form crypto token is a secure, random, and often time-limited value generated using cryptographic methods. It is embedded in a web form and verified on the server during submission to protect against attacks like:
Cross-Site Request Forgery (CSRF)
Replay attacks
Tampering with form data
Key Characteristics:
Random and unique per user session or form submission
Generated using cryptographic algorithms (e.g., HMAC, SHA-256)
Stored server-side (e.g., in a session or database) to validate upon submission
Time-limited to reduce risk if intercepted
Example Workflow:
1. Server generates a secure token (e.g., crypto.randomBytes(32).toString('hex'))
2. Token is embedded in the form as a hidden field
3. When the user submits the form, the token is sent along
4. Server verifies the token before processing the request