Dumm Zeuch • 4/18/2026

TxtCipher now supports AES-256-GCM

This article announces that TxtCipher, a web-based tool for encrypting short text, now supports AES-256-GCM as a second encryption mode alongside the existing RC4 mode. AES-256-GCM provides authenticated encryption, proper key derivation via PBKDF2 with SHA-256, random IVs per message, and no key length limit. The tool remains a single self-contained HTML file using the Web Crypto API, with a toggle to switch between modes. It explains the wire format, implementation details, and when to use each mode, focusing on modern security practices for IT/technology users.

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#Encryption #Pbkdf2 #Rc4