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  1. function generateSecureJWTSecret(length = 32) {
  2.   const chars =
  3.     "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*()_+-=[]{}|;:,.<>?";
  4.   let secret = "";
  5.   for (let i = 0; i < length; i++) {
  6.     const randomIndex = Math.floor(Math.random() * chars.length);
  7.     secret += chars[randomIndex];
  8.   }
  9.   return secret;
  10. }
  11.  
  12. console.log(`\n${generateSecureJWTSecret(48)}\n`); // 48-char long secret
  13.  
Success #stdin #stdout 0.03s 18920KB
comments (?)
stdin 
Standard input is empty
stdout 
!V*nbj@7f6S]M$w0%qBm{zj6J?ib6%wkQO+)mC2rhgGu.L1T
https://ideone.com/yhFPWF
JWT Secret Generator

Creates a cryptographically strong random string for JWT authentication.
Generates a 48-character string using mixed alphanumeric and special characters.
Suitable for securing JSON Web Tokens in web applications.

Run with 5s time limit for quick execution.

Usage: Copy the output and store securely in environment variables
WARNING: Never hardcode JWT secrets in your application code

Author: Kailash Parihar
Last updated: May 2025
language:
JavaScript (SMonkey 60.2.3)
created:
4 days ago
visibility:
public

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