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Class Information
Number: 380/277
Name: Cryptography > Key management
Description: Subject matter providing supervision or control of a signal necessary for encryption or decryption.


Sub-classes under this class:

Class Number Class Name Patents
380/44 Having particular key generator 778
380/278 Key distribution 544
380/286 Key escrow or recovery 252


Patents under this class:

Patent Number Title Of Patent Date Issued
7620993 Copyright protection system, key generation apparatus, recording apparatus, reproduction apparatus, read-out apparatus, decryption apparatus, recording medium, recording method and program Nov. 17, 2009
7620821 Processor including general-purpose and cryptographic functionality in which cryptographic operations are visible to user-specified software Nov. 17, 2009
7620820 Content data processing method, recording device, and reproduction device Nov. 17, 2009
7620812 System for authenticating remotely generated optical control signals Nov. 17, 2009
7620606 Method and apparatus for secure and small credits for verifiable service provider metering Nov. 17, 2009
7620186 Method for establishing an encrypted communication by means of keys Nov. 17, 2009
7620185 Preview of payable broadcasts Nov. 17, 2009
7620182 QKD with classical bit encryption Nov. 17, 2009
7617158 System and method for digital rights management of electronic content Nov. 10, 2009
7613302 Systems and methods for compression of key sets having multiple keys Nov. 3, 2009
7613301 Data storage device and data storage method Nov. 3, 2009
7606557 Mobile communication terminal having a function of reading out information from contactless type communication tag and method for providing information of whether an article is genuine or not Oct. 20, 2009
7606370 System, method and computer program product for updating security criteria in wireless networks Oct. 20, 2009
7606369 Process for establishing a common cryptographic key for N subscribers Oct. 20, 2009
7606361 Sending a message securely over an insecure channel Oct. 20, 2009
7603557 Communication device, communication system and authentication method Oct. 13, 2009
7602919 Method of integrating QKD with IPSec Oct. 13, 2009
7602914 Utilization of encrypted hard drive content by one DVR set-top box when recorded by another Oct. 13, 2009
7602913 Retrieval and transfer of encrypted hard drive content from DVR set-top box utilizing second DVR set-top box Oct. 13, 2009
7600134 Theft deterrence using trusted platform module authorization Oct. 6, 2009
7599927 Method for searching content particularly for extracts common to two computer files Oct. 6, 2009
7599493 Asymmetric key pair having a kiosk mode Oct. 6, 2009
7596697 Technique for providing multiple levels of security Sep. 29, 2009
7596368 Wireless access point apparatus and method of establishing secure wireless links Sep. 29, 2009
7596227 System method and model for maintaining device integrity and security among intermittently connected interoperating devices Sep. 29, 2009
7596226 Mobile terminal, method and computer program product for storing and retrieving network parameters Sep. 29, 2009
7596223 User control of a secure wireless computer network Sep. 29, 2009
7594116 Mediated key exchange between source and target of communication Sep. 22, 2009
7590869 On-chip multi-core type tamper resistant microprocessor Sep. 15, 2009
7590856 System for managing license for protecting content, server for issuing license for protecting content, and terminal for using content protected by license Sep. 15, 2009
7590844 Decryption system and method for network analyzers and security programs Sep. 15, 2009
7590236 Identity-based-encryption system Sep. 15, 2009
7587607 Attesting to platform configuration Sep. 8, 2009
7587599 System and method for providing services Sep. 8, 2009
7583803 QKD stations with fast optical switches and QKD systems using same Sep. 1, 2009
7581244 IMX session control and authentication Aug. 25, 2009
7580894 Method, device and computer program product for activating the right of use at least one secured content item Aug. 25, 2009
7580794 Remote subscription unit for GNSS information Aug. 25, 2009
7580529 Method for verifying digital franking notes Aug. 25, 2009
7577621 Cryptographic server with provisions for interoperability between cryptographic systems Aug. 18, 2009
7577257 Large scale quantum cryptographic key distribution network Aug. 18, 2009
7577250 Key derivation functions to enhance security Aug. 18, 2009
7571469 Method for communication control in a communication network, communication control entity, key management entity, terminal and gateway entity Aug. 4, 2009
7571467 System and method to package security credentials for later use Aug. 4, 2009
7571311 Scheme for sub-realms within an authentication protocol Aug. 4, 2009
7570764 Sequence number calculation and authentication in a communications system Aug. 4, 2009
7570763 Method for subscribing service and distributing encryption key based on public-key encryption algorithm in digital CATV system Aug. 4, 2009
7567674 Content transmission apparatus, content reception apparatus, content transmission program, and content reception program Jul. 28, 2009
7567672 Cryptographic communication system Jul. 28, 2009
7565702 Password-based key management Jul. 21, 2009



 
 
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