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
Heap/stack guard pages using a wakeup unit
Wire catalyst for hydrogenation/dehydrogenation reaction and manufacturing method therefor
Metal-containing compositions and method of making same
Systems and methods for implementing pressure sensitive keyboards
Electronic product design
Novelty snacks and method of manufacture of same
System for targeted delivery of therapeutic agents
  Randomly Featured Patents
Rapid manufacturing method
System and method for providing enhanced user-service interaction in an integrated telecommunications network
Managing hedge orders for synthetic spread trading
Internet advertisement system
Media holding apparatus, media size detector and method for detecting size of media for a document-generating device
Enhancing low quality images of naturally illuminated scenes
Solid state imaging apparatus
Coil spring type over-cover clutch
Radially adjustable tool head of a cutting machine
Imidazole compounds and medicinal use thereof