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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 1,724
380/278 Key distribution 1,332
380/286 Key escrow or recovery 461


Patents under this class:
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Patent Number Title Of Patent Date Issued
8094821 Key generation in a communication system Jan. 10, 2012
8094817 Cryptographic key management in communication networks Jan. 10, 2012
8094811 Data encryption device and data encryption method Jan. 10, 2012
8090950 System and method for authenticating documents Jan. 3, 2012
8090942 Method and system for asymmetrically encrypting .ZIP files Jan. 3, 2012
8090920 Recording medium, and information processing device and information processing method for the recording medium Jan. 3, 2012
8090108 Secure debug interface and memory of a media security circuit and method Jan. 3, 2012
8090107 Key agreement and re-keying over a bidirectional communication path Jan. 3, 2012
8090106 Multi-level data encryption and decryption system and method thereof Jan. 3, 2012
8090105 Broadcast encryption with dual tree sizes Jan. 3, 2012
8090104 Method of descrambling a scrambled content data object Jan. 3, 2012
8087076 Method and apparatus for preventing loading and execution of rogue operating systems in a logical partitioned data processing system Dec. 27, 2011
8086863 Method and a system for protecting path and data of a mobile agent within a network system Dec. 27, 2011
8086850 Secure group communication among wireless devices with distributed trust Dec. 27, 2011
8086849 Secure internet-scale eventing Dec. 27, 2011
8085938 Secret information management scheme based on secret sharing scheme Dec. 27, 2011
8085936 Method and system for content management in a secure communication system Dec. 27, 2011
8082588 Secured storage method of encrypted data on a personal digital recorder Dec. 20, 2011
8081760 Offline message security via selective data replication Dec. 20, 2011
8081758 Communication support server, communication support method, and communication support system Dec. 20, 2011
8079078 Encryption apparatus, program for use therewith, and method for use therewith Dec. 13, 2011
8078869 System and method of protecting data on a communication device Dec. 13, 2011
8077871 Content processing apparatus and encryption processing method Dec. 13, 2011
8077870 Cryptographic key split binder for use with tagged data elements Dec. 13, 2011
8077867 Confidential information processing apparatus, confidential information processing device, and confidential information processing method Dec. 13, 2011
8077861 Permutation data transform to enhance security Dec. 13, 2011
8074266 Memory card, data exchange system, and data exchange method Dec. 6, 2011
8074078 System and method for remote reset of password and encryption key Dec. 6, 2011
8074076 Method to protect a cryptographic assembly by homographic masking Dec. 6, 2011
8073143 Information processing device and method Dec. 6, 2011
8068611 Method of playing broadcast program contents using encryption and decryption techniques Nov. 29, 2011
8068610 Method and system for providing security within multiple set-top boxes assigned for a single customer Nov. 29, 2011
8068606 Embedding a secret in a bit string for safeguarding the secret Nov. 29, 2011
8065523 External storage apparatus and method of preventing information leakage Nov. 22, 2011
8064606 Method and apparatus for securely registering hardware and/or software components in a computer system Nov. 22, 2011
8064605 Methods and apparatus for providing upgradeable key bindings for trusted platform modules Nov. 22, 2011
8064604 Method and apparatus for facilitating role-based cryptographic key management for a database Nov. 22, 2011
8064603 Information terminal Nov. 22, 2011
8064599 Secure message transport using message segmentation Nov. 22, 2011
8060755 Apparatus and method for providing user-generated key schedule in a microprocessor cryptographic engine Nov. 15, 2011
8059964 QKD system with common-mode dithering Nov. 15, 2011
8059819 Systems and methods for distributing updates for a key at a maximum rekey rate Nov. 15, 2011
8059818 Accessing protected data on network storage from multiple devices Nov. 15, 2011
8059816 Secret sharing technique with low overhead information content Nov. 15, 2011
8054978 Key management for content protection Nov. 8, 2011
8054974 Opportunistic use of null packets during encryption/decryption Nov. 8, 2011
8054973 User key management method for broadcast encryption (BE) Nov. 8, 2011
8051302 Data distributing system and recording medium used for it Nov. 1, 2011
8051300 System and method for reducing latency on remotely-booted information handling systems Nov. 1, 2011
8051296 System and method for initializing secure communications with lightweight devices Nov. 1, 2011

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