AES Encryption Tester

AES-256-GCM runs only in this browser. Never use this tester as a replacement for a managed key system.

AES-256-GCM · random 96-bit IV · PBKDF2-SHA-256

About this Tool

This browser-based tester encrypts text with AES-256-GCM and derives a key from your passphrase with PBKDF2-SHA-256. It is useful for learning and local tests, not a replacement for production key management.

Why people use this tool

  • Test AES-256-GCM encryption and decryption without uploading plaintext.
  • Use a passphrase and adjustable PBKDF2 iterations for local experiments.
  • The output includes the data needed by this tool to decrypt the payload later.

How to use it

  1. Enter text to encrypt or paste a payload to decrypt.
  2. Enter the same passphrase and choose Encrypt or Decrypt.
  3. Copy the result, and never reuse a production secret in a public tester.

Frequently Asked Questions

No. Use a reviewed cryptographic design and managed key storage for production data.