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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
8170213 Methodology for coordinating centralized key management and encryption keys cached through proxied elements May. 1, 2012
8166565 Encryption and access method and system for peer-to-peer distributed file storage Apr. 24, 2012
8166561 Security device, secure memory system and method using a security device Apr. 24, 2012
8166304 Support for multiple security policies on a unified authentication architecture Apr. 24, 2012
8166301 Enabling stateless server-based pre-shared secrets Apr. 24, 2012
8165305 Enhanced relational database security through encryption of table indices Apr. 24, 2012
8165304 Domain digital rights management system, license sharing method for domain digital rights management system, and license server Apr. 24, 2012
8165303 Method and apparatus for public key cryptography Apr. 24, 2012
8165302 Key table and authorization table management Apr. 24, 2012
8165301 Input-output device and storage controller handshake protocol using key exchange for data security Apr. 24, 2012
8165300 System and method for generalized authentication Apr. 24, 2012
8165285 Process for generating an elliptic curve, application in a cryptographic process, and cryptographic process using such a curve Apr. 24, 2012
8161543 VLAN tunneling Apr. 17, 2012
8160256 Key calculation method and key agreement method using the same Apr. 17, 2012
8160255 System and method for encrypted group network communication with point-to-point privacy Apr. 17, 2012
8160246 Apparatus and method for generating a key for broadcast encryption Apr. 17, 2012
8160245 Methods and apparatus for performing an elliptic curve scalar multiplication operation using splitting Apr. 17, 2012
8160244 Stateless hardware security module Apr. 17, 2012
8156563 Method for managing keys and/or rights objects Apr. 10, 2012
8156560 Method and apparatus for providing a border guard between security domains Apr. 10, 2012
8156192 E-mail messaging system and method for enhanced rich media delivery Apr. 10, 2012
8155320 Data storage device, management server, integrated circuit, data update system, home electric apparatuses, data update method, encryption method, and encryption/decryption key generation metho Apr. 10, 2012
8155310 Key derivation functions to enhance security Apr. 10, 2012
8155306 Method and apparatus for increasing the speed of cryptographic processing Apr. 10, 2012
8151119 Method and apparatus for secure data mirroring a storage system Apr. 3, 2012
8150317 Method and system for managing mobility of an access terminal in a mobile communication system using mobile IP Apr. 3, 2012
8150040 Key providing system, terminal device, and information processing method Apr. 3, 2012
8150039 Single security model in booting a computing device Apr. 3, 2012
8150038 Revocation of a system administrator in an encrypted file system Apr. 3, 2012
8150033 Optical security system using fourier plane encoding Apr. 3, 2012
8146143 Fraud detection Mar. 27, 2012
8145900 Crypto-pointers for secure data storage Mar. 27, 2012
8145897 Direct anonymous attestation scheme with outsourcing capability Mar. 27, 2012
8145707 Sending digitally signed emails via a web-based email system Mar. 27, 2012
8144876 Validating encrypted archive keys with MAC value Mar. 27, 2012
8144875 Method and system for establishing real-time authenticated and secured communications channels in a public network Mar. 27, 2012
8144874 Method for obtaining key for use in secure communications over a network and apparatus for providing same Mar. 27, 2012
8144872 System and method for generating analog-digital mixed chaotic signal, encryption communication method thereof Mar. 27, 2012
8144869 Content protection system, key data generation apparatus, and terminal apparatus Mar. 27, 2012
8144868 Encryption/decryption of program data but not PSI data Mar. 27, 2012
8141136 Method and system of replacing smart card Mar. 20, 2012
8140859 Secure storage and replay of media programs using a hard-paired receiver and storage device Mar. 20, 2012
8139770 Cryptographic key backup and escrow system Mar. 20, 2012
8139769 Processing multi-key content Mar. 20, 2012
8139767 Fine-grained forward-secure signature scheme Mar. 20, 2012
8135964 Apparatus, system, method, and computer program product for executing a program utilizing a processor to generate keys for decrypting content Mar. 13, 2012
8135959 External key to provide protection to devices Mar. 13, 2012
8135951 Automated key management system and method Mar. 13, 2012
8135132 Method and system for secure storage, transmission and control of cryptographic keys Mar. 13, 2012
8135129 Protection of a modular exponentiation calculation performed by an integrated circuit Mar. 13, 2012

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