Encryption apparatus, communication system using the same and me

Details Encryption apparatus, communication system using the same and me Encryption apparatus, communication system using the same and me

1994-07-19

1997-02-04

Cangialosi, Salvatore

Cryptography

Cryptanalysis

380 46, H04L 926

Patent

active

056007205

ABSTRACT:
In order to attain high speed and secure encryption, a communication apparatus comprises a random number generation circuit for sequentially generating random number sequences which assure difficulty in terms of amount of calculation in cryptoanalyzing the sequences based on output sequences while using a cryptographic key shared by partner stations as an initial value, and an encryption circuit for sequentially encrypting communication texts and outputting cryptograms in a transmitting station and sequentially cryptoanalyzing the cryptograms and outputting the same in a receiving station, faster than the sequential generation of the random numbers by the random number generation circuit.

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