Cryptography – Key management – Having particular key generator
Patent
1987-09-14
1989-02-28
Cangialosi, Salvatore
Cryptography
Key management
Having particular key generator
380 21, 380 47, 380 48, 380 50, H04L 904
Patent
active
048093270
ABSTRACT:
In a communication network, a transmitting station sends encrypted messages for selective decryption in any one of several receiving stations. To that end, the transmitting station stores a single set of several encryption keys, each of which is for encrypting messages to all of the receiving stations. Also, for each message that is sent for decryption in a particular receiving station, the transmitting station (a) automatically selects at random any encryption key from the single set, (b) receives, from an input terminal, a control word which is a series of bits that uniquely identifies the particular receiving station, (c) encrypts both the message and the control word with the randomly selected key, and (d) transmits the result of step (c) to all of the receiving stations.
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Cangialosi Salvatore
Fassbender Charles J.
Marhoefer L. Joseph
Unisys Corporation
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