Cryptographic communication method and system

Details Cryptographic communication method and system Cryptographic communication method and system

1991-02-21

1992-09-01

Cangialosi, Salvatore

Cryptography

Particular algorithmic function encoding

Public key

380 21, 380 45, H04K 100

Patent

active

051446650

ABSTRACT:
A cryptographic communication method and system for performing cryptographic communication between a host computer and a given one of plural terminals connected to the host computer by way of a communication network by using a data key designated by the given terminal or the host, wherein the host computer includes a cryptographic processing unit which includes a processing part for performing a public key cryptographic processing by using a pair of a public key and a private key and a common key cryptographic processing by using a common key, and an internal memory for storing master common key and master private key, a storage for recording as user private key information those data that result from the public key cryptographic processing performed by using a master public key on a plurality of user private keys which are in paired relation to user public keys held in the user terminals, respectively, and control means for performing input/output control between the storage and the cryptographic processing means.

REFERENCES:
patent: 4238853 (1980-12-01), Ehrsam et al.
patent: 4386234 (1983-05-01), Ehrsam et al.
patent: 4503287 (1985-03-01), Morris et al.
patent: 4683968 (1987-08-01), Appelbaum et al.
patent: 4850017 (1989-07-01), Matyas, Jr. et al.
patent: 4956863 (1990-09-01), Goss
Journal of Engineers Institute of Electronic Information Communication of Japan, D-1, vol. J75-D-1, No. 3, pp. 213-220, (Mar. 1989) "A Method for Rapid RSA Key Generation", Gotoh et al.

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