Decryption of retransmitted data in an encrypted communication s

Details Decryption of retransmitted data in an encrypted communication s Decryption of retransmitted data in an encrypted communication s

1996-05-17

1998-09-15

Tarcza, Thomas H.

Cryptography

Key management

Having particular key generator

380 37, 380 42, 380 44, 380 49, H04L 918, H04L 900

Patent

active

058091483

ABSTRACT:
The method generally includes the steps of receiving (201) a message (100) comprising a message indicator (101) and a plurality of encrypted blocks (103 through 111). When at least one block of the plurality of encrypted blocks is received with error, a second message is transmitted (215), which second message requests a retransmission of the at least one block. Upon receiving the retransmission of the at least one block without error, a keystream is generated (219) from the message indicator and the at least one block is decrypted using the keystream.

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patent: 5442705 (1995-08-01), Miyano
patent: 5598470 (1997-01-01), Cooper

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