Signalling scheme for controlling data encryption device in an e

Details Signalling scheme for controlling data encryption device in an e Signalling scheme for controlling data encryption device in an e

1991-07-25

1992-12-29

Swann, Tod

Cryptography

Key management

Having particular key generator

380 24, 380 25, H04L 902

Patent

active

051757664

ABSTRACT:
An improved method for communicating with a data encryption device is described. In accordance with this invention, a data encryption device adapted for providing encryption functions such as data encryption and decryption may be controlled with an inventive signalling protocol which provides two-way, symmetrical messaging. Data encryption messages are sent to a data encryption device with a message packet which includes a start of message character, a token field, a token dependent data field, a token delimiter and an end of message character. Once the requested data encryption function is performed, a response message is generated wherein the response message mirrors the request message with the exception that the token dependent data comprises data which was processed in accordance with the requested function. The method of the present invention is also adapted for loading key information in the data encryption device as well as communicating system status information.

REFERENCES:
patent: 4125746 (1978-11-01), Downey et al.
patent: 4156111 (1979-05-01), Downey et al.
patent: 4186871 (1980-02-01), Anderson et al.
patent: 4205200 (1980-05-01), Parikh et al.
patent: 4578530 (1986-03-01), Zeidler
patent: 4688035 (1987-08-01), Gray et al.
patent: 4698804 (1987-10-01), Flores et al.
patent: 4707830 (1987-11-01), Ulug
patent: 4799153 (1989-01-01), Hann et al.
patent: 4866704 (1989-09-01), Bergman
patent: 4866706 (1989-09-01), Christophersen et al.
patent: 4881263 (1989-11-01), Herbison et al.
patent: 4882752 (1989-11-01), Lindman et al.
patent: 4970714 (1990-11-01), Chen et al.
patent: 4975952 (1990-12-01), Mabey et al.
patent: 5050166 (1991-09-01), Cantoni et al.
"The Annotated C++ Reference Manual"; Margaret Ellis et al; Addison-Wesley Publishing Co, Reading Mass.; 1990 pp. 5-6.
"Compiler Construction For Digital Computers"; David Gries; John Wiley & Sons Co; 1971 p. 50.

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