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Class Information
Number: 380/284
Name: Cryptography > Key management > Key distribution > User-to-user key distributed over data link (i.e., no center) > Using master key (e.g., key-encrypting-key)
Description: Subject matter wherein a distributed short term key is protected by a separate private long term key.

Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
8694769 System and method for controlling data communications between a server and a client device Apr. 8, 2014
8667266 System and method for sending encrypted messages to a distribution list Mar. 4, 2014
8654974 Apparatus and method to provide secure communication over an insecure communication channel for location information using tracking devices Feb. 18, 2014
8656159 Versioning of modifiable encrypted documents Feb. 18, 2014
8656187 Dispersed storage secure data decoding Feb. 18, 2014
8638939 User authentication on an electronic device Jan. 28, 2014
8638935 System and method for key space division and sub-key derivation for mixed media digital rights management content Jan. 28, 2014
8630416 Wireless device and method for rekeying with reduced packet loss for high-throughput wireless communications Jan. 14, 2014
8630421 Cryptographic key backup and escrow system Jan. 14, 2014
8625787 Hierarchical key management for secure communications in multimedia communication system Jan. 7, 2014
8625805 Digital security bubble Jan. 7, 2014
8621213 Remote control of medical devices using instant messaging infrastructure Dec. 31, 2013
8600064 Apparatus, method, and computer program product for processing information Dec. 3, 2013
8600061 Generating secure device secret key Dec. 3, 2013
8588420 Systems and methods for determining a time delay for sending a key update request Nov. 19, 2013
8582766 Method for ensuring media stream security in IP multimedia sub-system Nov. 12, 2013
8582779 System and method for secure communications in a communication system Nov. 12, 2013
8583925 Mix-net system Nov. 12, 2013
8572389 System and method for protecting master encryption keys Oct. 29, 2013
8571221 On-chip storage, creation, and manipulation of an encryption key Oct. 29, 2013
8568226 Master control program for a gaming device Oct. 29, 2013
8565438 Method of storing broadcast contents in mobile broadcast service terminal Oct. 22, 2013
8553889 Mix-net system Oct. 8, 2013
8548171 Pair-wise keying for tunneled virtual private networks Oct. 1, 2013
8548172 Secure dissemination of events in a publish/subscribe network Oct. 1, 2013
8542593 System and methods for error tolerant content delivery over multicast channels Sep. 24, 2013
8539240 Rights object authentication in anchor point-based digital rights management Sep. 17, 2013
8539235 Method for operating a network, a system management device, a network and a computer program therefor Sep. 17, 2013
8538012 Performing AES encryption or decryption in multiple modes with a single instruction Sep. 17, 2013
8532289 Fast computation of a single coefficient in an inverse polynomial Sep. 10, 2013
8532304 Administration of wireless local area networks Sep. 10, 2013
8526615 Storage system executing encryption and decryption processing Sep. 3, 2013
8522028 Method for secure data exchange between two devices Aug. 27, 2013
8509449 Key protector for a storage volume using multiple keys Aug. 13, 2013
8503675 Cable television secure communication system for one way restricted Aug. 6, 2013
8503674 Cryptographic key attack mitigation Aug. 6, 2013
8495375 Methods and systems for secure channel initialization Jul. 23, 2013
8473752 Apparatus, system, and method for auditing access to secure data Jun. 25, 2013
8467536 Binding keys to secure media streams Jun. 18, 2013
8462955 Key protectors based on online keys Jun. 11, 2013
8464058 Password-based cryptographic method and apparatus Jun. 11, 2013
8452017 Methods and systems for secure channel initialization transaction security based on a low entropy shared secret May. 28, 2013
8437476 Hybrid method for distributing keys for the diffusion of encrypted data May. 7, 2013
8429720 Method and apparatus for camouflaging of data, information and functional transformations Apr. 23, 2013
8401189 Opportunistic use of keys during encryption/decryption Mar. 19, 2013
8402519 Transparent client authentication Mar. 19, 2013
8396218 Cryptographic module distribution system, apparatus, and program Mar. 12, 2013
8397083 System and method for efficiently deleting a file from secure storage served by a storage system Mar. 12, 2013
8392684 Data encryption in a network memory architecture for providing data based on local accessibility Mar. 5, 2013
8369524 Simplified method for renewing symmetrical keys in a digital network Feb. 5, 2013

1 2 3 4 5 6 7 8

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