Concealer is a program that allows you to easily hide a source file inside another destination file (decoy file).
The decoy file is fully functional and you can not see that it contains other file because the data are encrypted.
You can hide any file type into another, so that for example you can:
(1) Hide a text file in one binary.
Examples:
A text document into a PDF
A text document into an executable
A text document into an image(2) Hide a binary file to another binary file
Examples:
A PDF file into an executable
An executable into another executable
An image file into a PDFThe data source file is encrypted using AES (symmetric encryption algorithm) with a key length of 256 bits.
Although the decoy file can be any type of file, including a text file is highly recommended to select a binary file, because otherwise you could view that there is a strange content (encrypted data) in the decoy file.