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Class Information
Number: 380/43
Name: Cryptography > Communication system using cryptography > Data stream/substitution enciphering > Key sequence signal combined with data signal
Description: Subject matter wherein a predetermined sequence of digital signals is combined element-for-element with the message signal data elements to produce an encrypted or decrypted signal.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7623656 |
Stream cipher encryption and message authentication |
Nov. 24, 2009 |
| 7620809 |
Method and system for device registration within a digital rights management framework |
Nov. 17, 2009 |
| 7587045 |
System and method for securing document transmittal |
Sep. 8, 2009 |
| 7587607 |
Attesting to platform configuration |
Sep. 8, 2009 |
| 7570766 |
Transparently embedding non-compliant data in a data stream |
Aug. 4, 2009 |
| 7568105 |
Parallel distribution and fingerprinting of digital content |
Jul. 28, 2009 |
| 7567670 |
Verification information for digital video signal |
Jul. 28, 2009 |
| 7526091 |
Method for transmitting and receiving control information for encryption in a mobile communication system supporting multimedia broadcast/multicast service |
Apr. 28, 2009 |
| 7526656 |
Encryption/decryption system and method for the same |
Apr. 28, 2009 |
| 7519177 |
Method and system for processing a data set |
Apr. 14, 2009 |
| 7512804 |
Data storage security apparatus and system |
Mar. 31, 2009 |
| 7512805 |
Machine readable medium and method for data storage security |
Mar. 31, 2009 |
| 7512972 |
Synchronizing for digital content access control |
Mar. 31, 2009 |
| 7509250 |
Hardware key control of debug interface |
Mar. 24, 2009 |
| 7502466 |
System and method for secure communication of electronic documents |
Mar. 10, 2009 |
| 7486792 |
Terrestrial broadcast copy protection system for digital television |
Feb. 3, 2009 |
| 7457410 |
Transmission/reception system |
Nov. 25, 2008 |
| 7428306 |
Encryption apparatus and method for providing an encrypted file system |
Sep. 23, 2008 |
| 7421075 |
Wireless online cryptographic key generation method |
Sep. 2, 2008 |
| 7412061 |
Encrypting a digital object on a key ID selected therefor |
Aug. 12, 2008 |
| 7412058 |
Digital receiver and method for receiving secure group data |
Aug. 12, 2008 |
| 7400723 |
Secure method for secret key cryptographic calculation and component using said method |
Jul. 15, 2008 |
| 7386124 |
Block encoding method and block encoding/decoding circuit |
Jun. 10, 2008 |
| 7382820 |
Spread spectrum modulation system and method for embedding digital information into digital or analog media |
Jun. 3, 2008 |
| 7380132 |
Data recording method and apparatus, data record medium and data reproducing method and apparatus |
May. 27, 2008 |
| 7356148 |
Information processing method and apparatus, computer program, and computer-readable storage medium |
Apr. 8, 2008 |
| 7356149 |
Information processing method and apparatus, computer program, and computer-readable storage medium |
Apr. 8, 2008 |
| 7353209 |
Releasing decrypted digital content to an authenticated path |
Apr. 1, 2008 |
| 7336783 |
Cryptographic systems and methods supporting multiple modes |
Feb. 26, 2008 |
| 7333613 |
Cyphering of the content of a memory external to a processor |
Feb. 19, 2008 |
| 7321659 |
Simple universal hash for plaintext aware encryption |
Jan. 22, 2008 |
| 7305084 |
Fast encryption and authentication for data processing systems |
Dec. 4, 2007 |
| 7298841 |
Stegotext encoder and decoder |
Nov. 20, 2007 |
| 7298850 |
Encrypting keypad module |
Nov. 20, 2007 |
| 7295672 |
Method and apparatus for fast RC4-like encryption |
Nov. 13, 2007 |
| 7280659 |
Pseudorandom number generating apparatus or encryption or decryption apparatus using the same |
Oct. 9, 2007 |
| 7280658 |
Systems, methods, and computer program products for accelerated dynamic protection of data |
Oct. 9, 2007 |
| 7277543 |
Cryptographic combiner using two sequential non-associative operations |
Oct. 2, 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 |
| 7246235 |
Time varying presentation of items based on a key hash |
Jul. 17, 2007 |
| 7242770 |
Secure encryption/decryption for elevators |
Jul. 10, 2007 |
| 7242768 |
Super secure migratable keys in TCPA |
Jul. 10, 2007 |
| 7227948 |
Encryption apparatus and method, and decryption apparatus and method based on block encryption |
Jun. 5, 2007 |
| 7224795 |
Variable-length key cryptosystem |
May. 29, 2007 |
| 7224796 |
Pseudorandom number generating apparatus or encryption or decryption apparatus using the same |
May. 29, 2007 |
| 7158635 |
Generation of user equipment identification specific scrambling code for the high speed shared control channel |
Jan. 2, 2007 |
| 7124442 |
System and method for insertion and retrieval of microthreads in transmitted data |
Oct. 17, 2006 |
| 7120249 |
Methods and systems for generating encryption keys using random bit generators |
Oct. 10, 2006 |
| 7113592 |
Method and device for loading input data into a program when performing an authentication |
Sep. 26, 2006 |
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