"A decryption program can watch for the transition from one file type to another. But if the program cannot tell the difference? If the beginning
file and ending file are similar how can you tell if you actually decrypted it or not?"
Sorry, I can't understand what you're asking
Hmmm, if I wanted to secure something 100% over the Internet, I would use single pad encryption. There are probably programs out there to do that. To
achieve 100% anomominity, you would have to write a basic program yourself to do this, ie provide a button to point to the file to be
encrypted/devrypted and a button to point to the pad file.
I would say that the program out there without "back doors" would have to be one of the original programs that Phil Zimmerman posted that got him
thrown in the clink, however whether your download has subsequently been "modified" or "intercepted" or not, I could not say.
The version you can use for international use is 2.6.3i...but you cannot use it in the USA...the patent people etc don't like it. From the readme
PGP 2.6.3i is not approved by MIT or PRZ or NSA or the Pope or anyone else. However, it should be possible to use it legally by anyone in the free
world (i.e. all countries except USA, France, Iraq and a few others). There are three reasons why people may claim (incorrectly) that PGP 2.6.3i is
More info at:
The only problem is:
If you use the original program, it is not supported by Network Associates...hmmm...I wonder why?
If you want really good encryption, you have to do what you do with firewalls (ie dual firewalls) - you have to encrypt a number of times (the more
the better) with programs from different countries. That way, if NAI and NSA are "friends" then they could only decrypt the NAI version and not,
say, a russian version etc.
Personally, I don't encrypt anything as I've got nothing to hide, however if I was doing business with a foreign entity and there was a possibility
that the deal could crash if the data got into "whoever's" hands then yes, I would use a "single pad" style of encryption - would probably even
fly to the country first to xchange the single pad and program to make sure all comms. were secure.