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Class Information
Number: 380/265
Name: Cryptography > Communication system using cryptography > Symmetric key cryptography > Combining outputs of shift register
Description: Subject matter wherein the encryption or decryption includes summing the taps from individual stages of a shift register.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8683561 Fixed client identification system for positive identification of client to server Mar. 25, 2014
8660265 Cipher implementation Feb. 25, 2014
8660268 Keyed pseudo-random number generator Feb. 25, 2014
8588410 Simplified secure symmetrical key management Nov. 19, 2013
8555411 Locking mobile devices in a personal area network (PAN) Oct. 8, 2013
8548171 Pair-wise keying for tunneled virtual private networks Oct. 1, 2013
8515059 Cryptographic processor with dynamic update of encryption state Aug. 20, 2013
8516588 String detection system and method of detecting a string Aug. 20, 2013
8509440 PANA for roaming Wi-Fi access in fixed network architectures Aug. 13, 2013
8457309 Private key compression Jun. 4, 2013
8446250 Method and device for providing digital security May. 21, 2013
8433916 Active hip Apr. 30, 2013
8407484 Flash memory distribution of digital content Mar. 26, 2013
8401184 Device to generate a machine specific identification key Mar. 19, 2013
8300621 System and method for timing acquisition and carrier frequency offset estimation in wireless communication based on OFDM Oct. 30, 2012
8254576 System and method for limiting access to data Aug. 28, 2012
8208633 Method and system for securing communications in a metering device Jun. 26, 2012
8135130 Data encryption apparatus, data converting method, data converting program, recording medium and integrated circuit Mar. 13, 2012
8054972 Encryption processor of memory card and method for writing and reading data using the same Nov. 8, 2011
8036380 Efficient data integrity protection Oct. 11, 2011
8027473 System and method for improved data protection in PONs Sep. 27, 2011
8009827 Encryption processing method and encryption processing device Aug. 30, 2011
8000477 Data security system and method for high bandwidth bus Aug. 16, 2011
7979722 Flash memory distribution of digital content Jul. 12, 2011
7962965 Semiconductor device having power consumption analysis preventing function Jun. 14, 2011
7945791 Protected storage of a datum in an integrated circuit May. 17, 2011
7945049 Stream cipher using multiplication over a finite field of even characteristic May. 17, 2011
7925013 System for data encryption and decryption of digital data entering and leaving memory Apr. 12, 2011
7860251 Encryption-decryption circuit and method of operation Dec. 28, 2010
7827413 Extraction of a private datum to authenticate an integrated circuit Nov. 2, 2010
7796752 Cipher implementation Sep. 14, 2010
7796759 Diversification of a single integrated circuit identifier Sep. 14, 2010
7792300 Method and apparatus for re-encrypting data in a transaction-based secure storage system Sep. 7, 2010
7764789 Key bit stream generation Jul. 27, 2010
7747020 Technique for implementing a security algorithm Jun. 29, 2010
7739501 Cryptographic key construct Jun. 15, 2010
7724903 Framing of transmit encoded data and linear feedback shifting May. 25, 2010
7672453 Data encryption by nonlinear transfer function Mar. 2, 2010
7522727 Method and apparatus for providing authentication in a communication system Apr. 21, 2009
7502468 Method and system for generating a cryptographically random number stream Mar. 10, 2009
7496196 Method apparatus and system of performing one or more encryption and/or decryption operations Feb. 24, 2009
7424116 Method and apparatus for providing authentication in a communication system Sep. 9, 2008
7334131 Protected storage of a datum in an integrated circuit Feb. 19, 2008
7289558 Infinite impulse response multiplierless digital filter architecture Oct. 30, 2007
7277543 Cryptographic combiner using two sequential non-associative operations Oct. 2, 2007
7263191 Method and apparatus for encrypting data Aug. 28, 2007
7248697 Apparatus and method for scrambling and descrambling data wordwise in optical disk system Jul. 24, 2007
7194617 Method and apparatus to prevent the unauthorized copying of digital information Mar. 20, 2007
7191340 Generation of a secret quantity based on an identifier of an integrated circuit Mar. 13, 2007
7177421 Authentication engine architecture and method Feb. 13, 2007

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