Free AES-256 GCM Encryption

What is AES-256?

The Advanced Encryption Standard (AES) is a symmetric block cipher chosen by the U.S. government to protect classified information. AES-256 uses a 256-bit key length, meaning there are 2^256 possible key combinations—a number so vastly massive that a brute-force attack is mathematically impossible with current computing technology.

GCM (Galois/Counter Mode)

AES can operate in various modes. GCM is widely preferred because it provides Authenticated Encryption with Associated Data (AEAD). This means it not only encrypts the data (confidentiality) but also generates an authentication tag to ensure the ciphertext hasn't been tampered with (integrity).

The Local Imperative

When protecting highly sensitive intellectual property or personal messages, sending raw plaintext to a remote server for encryption defeats the purpose. The only truly secure method is to encrypt text with password locally no tracking directly via the browser's Web Crypto API.