Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Hitless manual cryptographic key refresh in secure packet networks










Image Number 5 for United States Patent #8082441.

In a hitless manual cryptographic key refresh scheme, a state machine is independently maintained at each network node. The state machine includes a first state, a second state, and a third state. In the first state, which is the steady state, a current cryptographic key is used both for generating signatures for outgoing packets and for authenticating signatures of incoming packets. In the second state, which is entered when a new cryptographic key is provisioned, the old (i.e. formerly current) key is still used for generating signatures for outgoing packets, however one or, if necessary, both of the old key and the newly provisioned key is used for authenticating signatures of incoming packets. In the third state, the new key is used for generating signatures for outgoing packets and either one or both of the old key and new key are used for authenticating signatures of incoming packets.








 
 
  Recently Added Patents
Tomlinson Harashima precoding with additional receiver processing in a multi-user multiple-input multiple-output wireless transmission system
Damage resistant antenna
Anti-fake battery pack and identification system thereof
Computer network running a distributed application
Optical module for a microlithography objective including holding and supporting devices
Image pickup device with a plurality of pixels and an AD conversion circuit
Lightweight multicast method and apparatus for data distribution service
  Randomly Featured Patents
High density component assembly method and apparatus
Process for the production of an oxidation catalyst on-line
Iodine adsorbent
Gasket apparatus
Laminated inductor
Poly (hydroxycarboxylic acid) amide salt derivative and lubricating composition containing it
Chain link
Process for producing diamine derivative
Dish drainer with cover
Reovirus for the treatment of neoplasia