Hermetic Stego will allow you to encrypt and hide a message (the contents of a computer file) in another file so that the addition of the message to the container file will not noticeably change the appearance of that file. If the file which has been hidden is deleted then there is no indication that it even exists, but it can still be recovered when you need to get at it.This program allows hiding a file of any size in one or more BMP image files, with or without the use of a user-specified stego key, so that the presence of the hidden file is undetectable (even by forensic software using statistical methods) and if a user-specified stego key is used then the hidden file can be extracted only by someone, using this software, who knows that stego key.