Encrypt / Decrypt - Free Online Tool | PivaBox

Encrypt and decrypt text using AES-256-GCM with password-based key derivation

How to Use Encrypt / Decrypt Tool

1. Type or paste the text you want to encrypt and enter a passphrase
2. Click Encrypt to securely encrypt the text using AES-256-GCM
3. To decrypt, paste the encrypted text (with salt and IV), enter the same passphrase, and click Decrypt

Frequently Asked Questions

Is Encrypt / Decrypt Tool free?

Yes, PivaBox Encrypt / Decrypt Tool is completely free. All encryption is done in your browser.

Are my texts uploaded to a server?

No. All encryption and decryption is done locally using the Web Crypto API (SubtleCrypto). Your data never leaves your device.

How secure is the encryption?

The tool uses AES-256-GCM, one of the most secure symmetric encryption algorithms available. It uses PBKDF2 with 100,000 iterations for key derivation, a random salt for each encryption, and a random initialization vector (IV) to ensure that even encrypting the same text twice produces different ciphertext. All operations happen entirely in your browser with no server involvement.