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
Preferential selection of candidates for delta compression
Information processing apparatus and storage medium for storing information processing program
Methods and devices for detecting and measuring environmental conditions in high performance device packages
Milk frother
Controller
Adaptive analog echo/next cancellation
Mechanisms for marking the orientation of a sawed die
  Randomly Featured Patents
Method of forming a flat flexible jumper
Brush with handle
Selective telephone caller identification service
Dynamic voltage pump circuit and method of dynamically generating an output supply voltage thereof
Belt driving controller, belt rotating device, and image forming apparatus
Portable terminal device and communication connection method thereof
Electronic photographing apparatus
Ampoule for crystal growth
Loading device for physiological examinations
Delivery of antihistamines through an inhalation route