Cryptography – Communication system using cryptography – Symmetric key cryptography
Patent
1997-11-13
2000-07-11
Swann, Tod R.
Cryptography
Communication system using cryptography
Symmetric key cryptography
380262, 380259, 380268, 380283, H04L 900
Patent
active
060884568
ABSTRACT:
A method of encrypting data is described in which a random variable (6A-6D) is generated in binary digital form. A first set of data (8A-8J) representing a plaintext message in binary digital form is combined with the random variable (6A-6D) to generate a second data set (9A-9J) in binary digital form. The data bits representing the random variable (6A-6D) are inserted into the second data set (9A-9J) according to a first predetermined set of rules and the order of the data bits in the second data set (9A-9J) is altered according to a second predetermined set of rules. A third data set (17A-17N) for transmission as a ciphertext message is thus generated.
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Applied Cryptography, Bruce Schneier (John Wiley & Sons, Inc., 1996) Chapter 23.15 Probabilistic Encryption, p. 552-554.
Burey William Richard
Leith James Milne
McCracken Douglas William
Callahan Paul E.
Desktop Guardian Limited
Swann Tod R.
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