Data cryptography operations using control vectors

Details Data cryptography operations using control vectors Data cryptography operations using control vectors

1989-08-30

1990-04-17

Cangialosi, Salvatore

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 25, 380 45, 380 49, H04L 900

Patent

active

049187287

ABSTRACT:
Data cryptography is achieved in an improved manner by associating with the data cryptography key, a control vector which provides the authorization for the uses of the key intended by the originator of the key. Among the uses specified by the control vector are limitations on encryption, decryption, authentication code generation and verification, translation of the user's data. Complex combinations of data manipulation functions are possible using the control vectors, in accordance with the invention. The system administrator can exercise flexibility in changing the implementation of his security policy by selecting appropriate control vectors in accordance with the invention. Complex scenarios such as encrypted mail box, session protection, file protection, ciphertext translation center, peer-to-peer ciphertext translation, message authentication, message authentication with non-repudiation and many others can be easily implemented by a system designer using the control vectors, in accordance with the invention.

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D. W. Davies, et al., "Security for Computer Networks," John Wiley & Sons, New York, 1984, Section 6.5, Key Management with Tagged Keys, pp. 168-172.

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