Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1991-05-30
1993-02-09
Cangialosi, Salvatore
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 48, H04L 900
Patent
active
051857960
ABSTRACT:
In an encrypted radio system, transmsitters and receivers can each be provided with a plurality of encryption algorithms (407 and 425) and/or encryption key variables (408 and 426). A unique logical ID (409 and 427) corresponds to each of the above. During transmission of an encrypted message, both encryption synchronization information (319) and information concerning the logical ID (318) is repetitively interleaved with the encrypted message itself. So configured, a receiver that temporarily loses viable reception can again obtain encryption synchronization and algorithm/key information, and therefore rapidly recover from the reception disturbance.
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Cangialosi Salvatore
Lukasik Susan L.
Motorola Inc.
Parmelee Steven G.
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