Method for identifying corrupt encryption keys within a secure communication system
May 27, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesApparatus for the transmission end-enciphering and reception end-deciphering of information Secure communication system with remote key setting Key distribution method Apparatus and method for secure transmission of data over an unsecure transmission channel Apparatus and method for secure transmission of data over an unsecure transmission channel Method for utilizing an encrypted key as a key identifier in a data packet in a computer network Cryptographic communication method and cryptographic communication device Consumer oriented smart card system and authentication techniques 5222137 InventorsAssigneeApplicationNo. 250318 filed on 05/27/1994US Classes:380/271, Having receiver selection (e.g., pager)380/2, EQUIPMENT TEST OR MALFUNCTION INDICATION380/277KEY MANAGEMENTExaminersPrimary: Gregory, Bernarr E.Attorney, Agent or FirmInternational ClassH04L 009/00AbstractA resource allocator (108) receives, from a first communication unit, a request to establish secure communications with at least a second communication unit. A key identifier is retrieved by the resource allocator and transmitted to at least the second communication unit. Based upon the transmitted key identifier, the second communication unit retrieves an identified encryption key and, at least when the identified encryption key is corrupt, transmits a corrupt key indication to the resource allocator. In response, the resource allocator can assign a default key identifier for use in the secure communication. In this manner, missed communications due to encryption key failures are reduced. | |
