One time pads, Next question?
Okay, with the intel I have gotten from the responses let me modify and clarify. So, I now know that you can't use a PRNG to create a OTP. If I did have a RNG that could create a "cryptographically" random, million character OTP and I physically loaded the data onto each computer I wanted to communicate with(e.i. group of laptops all loaded at the same location, same time), how cryptographically secure would the data be. I know that physical security would be a nessescary to the system. If I add some type of error checking to make sure someone that knows the plaintext doesn't modify specific characters, an attacker knows what the message is (e.g. "Send $10 to Bob") the message can be altered (to "Send $99 to Bob") even though it is encrypted. So, lets recap. If the keyig material is kept secure, and if the OTP is cryptographically random, and if error checking is implemented then would this be considered a secure(however encumbering it may be) system. Aaron.....
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AaronH4321@aol.com