Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Packet header designating cryptographically protected data
Reexamination Certificate
2007-02-20
2007-02-20
Barrón, Jr., Gilberto (Department: 2132)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Packet header designating cryptographically protected data
C713S150000, C713S151000, C713S160000, C713S168000, C713S181000, C713S176000
Reexamination Certificate
active
10012339
ABSTRACT:
A method and apparatus for data transmission between a sending node and a receiving node is provided. The sending node has a transmission executor for sending a decrypted message as a plurality of packets. When the encrypted message includes a message authentication code (MAC), the sending node sets an indicator in the packet that the result of MAC authentication will be sent later. The packet is sent from the sending node to the receiving node in a pipeline mode. The receiving node has buffer, and a preprocessor for preprocessing the payload of the packet. If the operation requested or the preprocessing required by the payload does not require MAC authentication, the requested operation/preprocessing will be executed. Otherwise, the receiving node defers the execution until the corresponding positive notification of MAC authentication is received from the sending node. Handling of negative MAC authentication is policy based at the receiving node.
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Barrón Jr. Gilberto
Lemma Samson
Nortel Networks Limited
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