The encryption method used is NOT a simple swap that always encrypts to the same result, the system used always encrypt's to a different result even in the same file.
for example "<h1>Testing Encryption</h1>" may encrypt to
in one part of the encrypted file and
in another part of the same file.
This of course will be entirely different in another files as no two files are encrypted using the same algorithm. There are other features as well. The file will fail to decrypt if the contents it transports are altered in any way.
There is a 14 day trail period on this I will be posting the full version very soon.