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










Image Number 6 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
Method and apparatus for management and analysis of services in VoIP networks
Lithographic apparatus and device manufacturing method
Fibrous laminate interface for security coatings
Vehicle grille
Light emitting diode package and method of fabricating the same
Systems and methods for restoring images
Method for delivering a volatile material
  Randomly Featured Patents
Process for producing 3-1-menthoxypropane-1,2-diol
Refractometer for determining the refraction properties of an eye
I-phase fleshtone correction system using R-Y, G-Y and B-Y color difference signal demodulators
Versatile orthopaedic leg mounted walker
Parallel visual radio station selection
Dispenser for swimming pool chemicals
Method and apparatus for measuring emissivity
Highly potent full and partial agonists and antagonists of the nociceptin/orphanin FQ receptor
Use of indole-3-acetic acid derivatives in medicine
Rotor assembly for screw pump