Yeo
From Just Solve the File Format Problem
yeo by p3tr (Peter le Roux) is a Win32 command-line steganography program that hides messages in JPG and PNG files. It does not support adding files, just text from command line.
- includes (default) option to compresses message with zlib before encryption
- uses aes256 on data, using an sha256 hash of the password as the encryption key.
- rotates the password by 1 character, and uses an sha256 hash of that for the random seed for the image pointer access.