Text Encrypt / Decrypt

Name: Text Encrypt / Decrypt
Author: Nahlawi Tools

AES-256-GCM encryption with passphrase using Web Crypto API — fully client-side

ℹ️ About Text Encrypt / Decrypt

Encrypt and decrypt text using AES-256-GCM authenticated encryption through the Web Crypto API. Provide a passphrase to encrypt text into a base64 ciphertext with an embedded salt and initialization vector. All processing happens entirely in your browser with no data ever leaving your device.

❓ Frequently Asked Questions

Is AES-256-GCM secure?▸

Yes, AES-256-GCM is the gold standard for symmetric encryption. It provides both confidentiality and authenticity, meaning encrypted data cannot be read or tampered with without the key.

Can anyone decrypt my text without the passphrase?▸

No. The encryption key is derived from your passphrase using PBKDF2 with 100,000 iterations, making brute-force attacks computationally infeasible. Without the exact passphrase, the data is unrecoverable.