Andreas Software
Free programs for Windows by Andreas Jönsson


AS-Text Crypt 6.0 - Encrypt text with Salsa20, ChaCha20, HC-256 and more.

AS-Text Crypt 6.0
Screenshot of AS-Text Crypt 6.0

Encryption program for text that uses Salsa20, ChaCha20 or HC-256 with a 256-bit key. The program also includes two block ciphers in CTR mode. The program encodes the encrypted information.


Important information: Save the downloaded program if you have information encrypted with it. I do not guarantee compatibility between different versions/revisions of the program.

> Download AS-Text Crypt 6.0 (Zip, 1.15 MB)

Revision Date: 2022-01-18.
License: Freeware.
Unicode Support: Yes.
Program Type: Fully portable, x64.
Operating System(s): Windows 7, 8, 8.1, 10 and 11. (Also the Server versions.)
Language(s): English and Swedish.

This is the program's official website - download the program here to get the latest version/revision. The program is free.

Salsa20/40 & ChaCha20/40

If you start the program with the parameter "/SalsaChaChaDoubleRounds", the program uses Salsa20/40 and ChaCha20/40.

HC-256 Variant

If you start the program with the parameter "/HC256Variant", the program uses the proposed alternative variant of HC-256. This variant is expected to be slightly stronger.

For files?

Check out AS-File Crypt 6.0.