Cryptographic communication system

Details Cryptographic communication system Cryptographic communication system

1996-08-26

1999-10-12

Hayes, Gail O.

Cryptography

Communication system using cryptography

Wireless communication

380 37, 380 49, H04L 900, H04L 916

Patent

active

059664487

ABSTRACT:
According to a cryptographic communication system which can safely perform cipher conversion processing when cryptographic communication is performed between terminals using different cipher types, when a terminal 10A-1 connected to a LAN-A using a cryptographic algorithm C1 transmits data to a terminal 10B-1 connected to a LAN-B using a cryptographic algorithm C2, the terminal 10A-1 generates two meaningless data items from the data to be transmitted, decrypts the two generated data items according to the cryptographic algorithm C1, and then transmits the decrypted data to two cryptographic protocol conversion servers and for dividing the data into two data items. Each of the cryptographic protocol conversion servers decrypts each transmitted data item, the re-encrypts the decrypted data according to the cryptographic algorithm C2, and then transmits the data to the terminal 10B-1. The terminal 10B-1 restores original transmission data on the basis of the two data items transmitted from the respective cryptographic protocol conversion servers.

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"Development in Multimedia Encryption Algorithm Hisecurity-multi2 and Its Operation Mode", The Processing of The 1988 Joint Workshop on Information Theory and Its Applications, Cryptography and Information Security, Takaragi, et al., pp. 167-173.

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