Secrecy communication system

Details Secrecy communication system Secrecy communication system

1997-12-30

2000-04-18

Peeso, Thomas R.

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

713201, 713160, 380 37, H04N 1413

Patent

active

060527862

ABSTRACT:
An encryption unit uses part of a pseudo random number generated by a random number generator to encrypt data to be transferred which are stored in the payload of a cell. A counter information assigning section inserts counter information indicating the order in which the cell was sent into that payload. A random number generator on a receiving side generates the same pseudo random number as the random number generator on a sending side. A counter information analysis section identifies the position of the part of the pseudo random number to be used in the encryption unit based on the counter information extracted from the received cell, and has the random number generator on the receiving side output that part of the pseudo random number. The encrypted transferred data are extracted from the received cell, and these transferred data are decrypted using the part of the pseudo random number output from the random number generator on the receiving side.

REFERENCES:
Schneier, "Applied Cryptography", pp. 2, 419, 1995.

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