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Class Information
Number: 380/255
Name: Cryptography > Communication system using cryptography
Description: Subject matter including cryptographic structure or methods which protect the transmission or reception of information.

Sub-classes under this class:

Class Number Class Name Patents
380/257 Circuit switched network (e.g., wired telephone) 146
380/267 Correcting for random appearance of control character code 42
380/42 Data stream/substitution enciphering 446
380/256 Fiber optic network 274
380/38 Frequency shift or inversion 82
380/269 Having compression 176
380/40 Having plural band pass filters 40
380/258 Position dependent or authenticating 306
380/268 Pseudo-random sequence scrambling 387
380/275 Speech scrambler detail 99
380/259 Symmetric key cryptography 556
380/36 Time segment interchange 88
380/35 Variable time delay modulation 69
380/270 Wireless communication 1,324

Patents under this class:

Patent Number Title Of Patent Date Issued
8713329 Authenticated secret sharing Apr. 29, 2014
8713303 Method and system for establishing security connection between switch equipments Apr. 29, 2014
8712052 System and method for secure power systems infrastructure communications Apr. 29, 2014
8712051 Spoofing detection for civilian GNSS signals Apr. 29, 2014
8712050 Method for implementing dynamic pseudorandom keyboard remapping Apr. 29, 2014
8712049 System for implementing dynamic pseudorandom keyboard remapping Apr. 29, 2014
8707415 Method for storing data, computer program product, ID token and computer system Apr. 22, 2014
8705743 Communication security Apr. 22, 2014
8705741 Subchannel security at the optical layer Apr. 22, 2014
8705740 Elliptic curve-based message authentication code system and method Apr. 22, 2014
8705348 Use of metadata for time based anti-replay Apr. 22, 2014
8694789 System and method for generating a non-repudiatable record of a data stream Apr. 8, 2014
8693686 Secure telephone devices, systems and methods Apr. 8, 2014
8693685 Quantum cryptography apparatus Apr. 8, 2014
8687811 Diabetes care kit that is preconfigured to establish a secure bidirectional communication link between a blood glucose meter and insulin pump Apr. 1, 2014
8687808 Method and system for self synchronizing cryptographic parameters Apr. 1, 2014
8687807 Cascading dynamic crypto periods Apr. 1, 2014
8687803 Operational mode for block ciphers Apr. 1, 2014
8683571 System and method for authentication of users in a secure computer system Mar. 25, 2014
8683227 Communication system for updating old data with new data Mar. 25, 2014
8681983 Method for public-key attribute-based encryption with respect to a conjunctive logical expression Mar. 25, 2014
8681982 Method of establishing a quantum key for use between network nodes Mar. 25, 2014
8681981 Method and apparatus for transmitting voice communications related to a multimedia session Mar. 25, 2014
8681975 Encryption method and apparatus using composition of ciphers Mar. 25, 2014
8681972 Method of executing a cryptographic calculation Mar. 25, 2014
8677155 System for detecting intrusions by devices with openable casing Mar. 18, 2014
8676998 Reverse network authentication for nonstandard threat profiles Mar. 18, 2014
8675877 Sharing a secret via linear interpolation Mar. 18, 2014
8671278 Multiprotocol communication authentication Mar. 11, 2014
8670565 Encrypted packet communication system Mar. 11, 2014
8666079 Decoding and encoding data Mar. 4, 2014
8666076 Method of elliptic curve cryptography using EW-MOF on scalar multiplication Mar. 4, 2014
8666075 System and method for improving in-game communications during a game Mar. 4, 2014
8665307 Augmenting a video conference Mar. 4, 2014
RE44777 System and method for encoding data transmitted on a bus Feb. 25, 2014
8661240 Joint encryption of data Feb. 25, 2014
8660587 Method for providing position information using time period Feb. 25, 2014
8656152 Image forming apparatus, host apparatus and encryption method of job object document thereof Feb. 18, 2014
8654979 Quantum key device Feb. 18, 2014
8654975 Joint encryption of data Feb. 18, 2014
8654974 Apparatus and method to provide secure communication over an insecure communication channel for location information using tracking devices Feb. 18, 2014
8654970 Apparatus and method for implementing instruction support for the data encryption standard (DES) algorithm Feb. 18, 2014
8649518 Implementing CSA cryptography in an integrated circuit device Feb. 11, 2014
8646104 Stateless challenge-response broadcast protocol Feb. 4, 2014
8646042 Hybrid device having a personal digital key and receiver-decoder circuit and methods of use Feb. 4, 2014
8645705 Information processing device and activation control method Feb. 4, 2014
8644510 Discovery of security associations for key management relying on public keys Feb. 4, 2014
8644509 Data providing process based on an IBPE scheme Feb. 4, 2014
8638937 Methods and systems for distributed processing on consumer devices 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

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