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Class Information
Number: 380/260
Name: Cryptography > Communication system using cryptography > Symmetric key cryptography > Symmetric key synchronization
Description: Subject matter including transmission of a signal for generating identical transmitting and receiving keys in step relationship.










Sub-classes under this class:

Class Number Class Name Patents
380/261 Including frame synchronization 140
380/263 Nonlinear or chaotic system 188
380/262 Transmitting a seed, sequence, or initial value 443


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8687808 Method and system for self synchronizing cryptographic parameters Apr. 1, 2014
8683227 Communication system for updating old data with new data Mar. 25, 2014
8656163 Method for establishing a secured communication without preliminary information share Feb. 18, 2014
8644516 Universal secure messaging for cryptographic modules Feb. 4, 2014
8645694 Method of authentication based on polyomials Feb. 4, 2014
8630420 Method for auto-configuration of a network terminal address Jan. 14, 2014
8625797 Releasing a service on an electronic appliance Jan. 7, 2014
8621216 Method, system and device for synchronizing between server and mobile device Dec. 31, 2013
8613057 Identity management facilitating minimum disclosure of user data Dec. 17, 2013
8600356 Authentication in a roaming environment Dec. 3, 2013
8588410 Simplified secure symmetrical key management Nov. 19, 2013
8583912 Communication system of client terminals and relay server and communication method Nov. 12, 2013
8577037 Pipelined packet encapsulation and decapsulation for temporal key integrity protocol employing arcfour algorithm Nov. 5, 2013
8566587 Network system and method for operating network system Oct. 22, 2013
8548171 Pair-wise keying for tunneled virtual private networks Oct. 1, 2013
8543813 Method and apparatus to implement valid mobile ticket transfer Sep. 24, 2013
8542835 Method and system for mobile communications Sep. 24, 2013
8542827 Shared encryption key generation via accelerometer digitization Sep. 24, 2013
8538020 Hybrid client-server cryptography for network applications Sep. 17, 2013
8538024 Method and apparatus for initializing a new stream cipher during handoff Sep. 17, 2013
8515069 Method and apparatus for encrypting/decrypting packet data of precise time synchronization protocol and time synchronization system Aug. 20, 2013
8509440 PANA for roaming Wi-Fi access in fixed network architectures Aug. 13, 2013
8503677 Communication system and device Aug. 6, 2013
8478998 Authenticated communication using a shared unpredictable secret Jul. 2, 2013
8467532 System and method for secure transaction of data between a wireless communication device and a server Jun. 18, 2013
8443194 Method of authentication and session key agreement for secure data transmission, a method for securely transmitting data, and an electronic data transmission system May. 14, 2013
8442230 Enhanced high availability for group VPN in broadcast environment May. 14, 2013
8442226 Decryption key management May. 14, 2013
8437475 Packet-based and pseudo-packet-based cryptographic synchronization systems and methods May. 7, 2013
8433069 Software defined radio device, and method for renewing software, and software defined radio system Apr. 30, 2013
8428260 System and method of increasing encryption synchronization availability Apr. 23, 2013
8406735 Method for pairing electronic equipment in a wireless network system Mar. 26, 2013
8392711 Staged establishment of secure strings of symbols Mar. 5, 2013
8385548 System and method for entangled photons generation and measurement Feb. 26, 2013
8378786 Security provision in standards-compliant RFID systems Feb. 19, 2013
8379856 Hardware based cryptography Feb. 19, 2013
8369524 Simplified method for renewing symmetrical keys in a digital network Feb. 5, 2013
8358783 Secure wiegand communications Jan. 22, 2013
8345873 Methods and systems for N-state signal processing with binary devices Jan. 1, 2013
8345877 Key management system Jan. 1, 2013
8340295 High-speed cryptographic system using chaotic sequences Dec. 25, 2012
8315386 Method and apparatus for performing VoIP-based communication using bio keys Nov. 20, 2012
8306228 Universal secure messaging for cryptographic modules Nov. 6, 2012
8295477 Cryptanalysis method and system Oct. 23, 2012
8295480 Uncertainty-based key agreement protocol Oct. 23, 2012
8296577 Cryptographic bus architecture for the prevention of differential power analysis Oct. 23, 2012
8285991 Electronically signing a document Oct. 9, 2012
8284937 Method for synchronization in encrypted communications using shared key Oct. 9, 2012
8280043 System and method for protecting data in a secure system Oct. 2, 2012
8270608 Apparatus, system and method for detecting a loss of key stream synchronization in a communication system Sep. 18, 2012

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