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Class Information
Number: 380/37
Name: Cryptography > Communication system using cryptography > Time segment interchange > Block/data stream enciphering
Description: Subject matter wherein time interchanged data segments are processed either in discrete blocks, or a continuous stream, of bits or pulses which serially comprise the message stream.


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

Patent Number Title Of Patent Date Issued
7403615 Methods and apparatus for accelerating ARC4 processing Jul. 22, 2008
7403620 Cyphering/decyphering performed by an integrated circuit Jul. 22, 2008
7400730 Cryptographic communication method in communication system Jul. 15, 2008
7400723 Secure method for secret key cryptographic calculation and component using said method Jul. 15, 2008
7391865 Secure data parser method and system Jun. 24, 2008
7386131 Tolerant digital certificate distribute system and distribute method Jun. 10, 2008
7386124 Block encoding method and block encoding/decoding circuit Jun. 10, 2008
7382876 Hash function constructions from expander graphs Jun. 3, 2008
7382878 System and method for data encryption Jun. 3, 2008
7380131 Copy protection without non-volatile memory May. 27, 2008
7366300 Methods and apparatus for implementing a cryptography engine Apr. 29, 2008
7362859 Enhancement of utilization of encryption engine Apr. 22, 2008
7349539 Encoding and encrypting devices for secure scalable data streaming Mar. 25, 2008
7346163 Dynamic composition of pre-encrypted video on demand content Mar. 18, 2008
7346161 Method and apparatus for designing cipher logic, and a computer product Mar. 18, 2008
7336783 Cryptographic systems and methods supporting multiple modes Feb. 26, 2008
7334124 Logical access block processing protocol for transparent secure file storage Feb. 19, 2008
7333609 Encrypting apparatus Feb. 19, 2008
7333614 System and method for encypting spread spectrum carrier Feb. 19, 2008
7328339 Method of testing the encryption function of a device Feb. 5, 2008
7328352 Apparatus and method for reading or writing user data Feb. 5, 2008
7324644 Scheme for transferring copyright protected contents data using radio link layer authentication/encryption Jan. 29, 2008
7324648 Method and apparatus for secure key delivery for decrypting bulk digital content files at an unsecure site Jan. 29, 2008
7321658 Padding application method ensuring security of cryptosystem and encryptor/decryptor Jan. 22, 2008
7321659 Simple universal hash for plaintext aware encryption Jan. 22, 2008
7319756 Audio coding Jan. 15, 2008
7319751 Data encryption Jan. 15, 2008
7317795 Pipelined deciphering round keys generation Jan. 8, 2008
7308468 Pattern matching Dec. 11, 2007
7305084 Fast encryption and authentication for data processing systems Dec. 4, 2007
7305085 Encryption apparatus and method, and decryption apparatus and method based on block encryption Dec. 4, 2007
7298840 Method and system for data integrity protection Nov. 20, 2007
7295672 Method and apparatus for fast RC4-like encryption Nov. 13, 2007
7289629 Primitives for fast secure hash functions and stream ciphers Oct. 30, 2007
7290151 Logic circuit with variable internal polarities Oct. 30, 2007
7283628 Programmable data encryption engine Oct. 16, 2007
7280657 Data encryption and decryption system and method using merged ciphers Oct. 9, 2007
7280659 Pseudorandom number generating apparatus or encryption or decryption apparatus using the same Oct. 9, 2007
7277542 Stream cipher encryption application accelerator and methods thereof Oct. 2, 2007
7277541 Method and system for using a portion of a digital good as a substitution box Oct. 2, 2007
7274792 Methods and apparatus for initialization vector processing Sep. 25, 2007
7266686 Multicasting method and apparatus Sep. 4, 2007
7263186 Speed-up hardware architecture for CCMP encryption protocol Aug. 28, 2007
7260218 Configurable circuit with configuration data protection features Aug. 21, 2007
7260217 Speculative execution for data ciphering operations Aug. 21, 2007
7257229 Apparatus and method for key scheduling Aug. 14, 2007
7257224 Cryptographical pseudo-random number generation apparatus and program Aug. 14, 2007
7254232 Method and system for selecting encryption keys from a plurality of encryption keys Aug. 7, 2007
7254233 Fast encryption and authentication for data processing systems Aug. 7, 2007
7254234 Method and apparatus for encrypting and decrypting information Aug. 7, 2007

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