M ASTER  S OFTWARE


QUALITY SOFTWARE SINCE 1958
 

PROTECT YOUR PRIVACY -- PROTECT YOUR SECURITY
with the strongest line of data file and message encryption software available.



OP-CRYPT
MESSAGE ENCRYPTION SYSTEM

       OP-Crypt is the famous One-Time Pad message encryption system. The One-Time Pad system uses a different key from an infinitely long key stream for each character of your message. A different portion of the key stream is used for each message. These portions are never used again, so every character of every message gets a different key.

       It has been proven mathematically that this system is unbreakable. This is because any encrypted message can stand for any text of the same length. Thus the 14-character message   §B%3r^4Ñ:+e8\ü   could stand for any one of
     Attack at dawn     countermeasure     Ich bin fremde
     Surrender now!     microprocessor     tout est perdu
     Hold your fire     mistranslation     3 (x+y) (z-16)
or any other 14-character word or phrase. There is nothing in the encrypted message that makes any of these interpretations more probable than the others.

       The Master Software implementation of the One-Time Pad system is much stronger than other versions. Two independent keys are used for each character of the message, and between these two separate encryptions a block encryption is applied to the message. So the message receives 3 encryption steps, with two of them provably unbreakable.

       OP-Crypt has been designed so that a network of stations can communicate securely without having to distribute separate keys for every message. Once your network is set up with a key for each station, you never need to distribute any more keys. You simply give each message a unique message ID, and OP-Crypt generates secure 1920-bit keys for you.

OP-Crypt is available now for only $129. Shipping and handling within the U.S. is included, free. (New York state residents must add applicable sales tax.)

ORDER TODAY


For more information see the
OP-Crypt User Manual

For general information about cryptography, see
A Brief Introduction to Cryptography
Choosing an Encryption Product


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OP-Crypt Message Encryption System.

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