| Patents for H04K 1 - Secret communication (16,771) |
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| 06/29/2004 | US6757903 Object driven software architecture method and apparatus |
| 06/27/2004 | CA2454018A1 Systems and methods for providing an interactive trading application |
| 06/24/2004 | WO2004036762A3 Encryption processing method and device of a voice signal |
| 06/24/2004 | US20040123100 Certificate issuing method and certificate verifying method |
| 06/24/2004 | US20040123099 Certificate, certificate issuing method and system and certificate verifying method and device |
| 06/24/2004 | US20040120520 Method for solving frobenius equations for elliptic-curve cryptography |
| 06/24/2004 | US20040120517 Device for compression and encryption, and device for decompression and decryption |
| 06/24/2004 | US20040120516 Modular reduction method which recognizes special conditions |
| 06/23/2004 | EP0691059B1 Secure access telephone extension system and method |
| 06/23/2004 | CN1507196A Digital phonetic chaotic secret communication system |
| 06/23/2004 | CN1507195A High-reliability cipher synchronizing method in mobile communication |
| 06/23/2004 | CN1507194A Method of utilizing special equipment with A/D converter in generatnig message cipher key |
| 06/22/2004 | US6754377 Methods and systems for marking printed documents |
| 06/22/2004 | US6754346 Method for tracing the distribution of physical digital media |
| 06/17/2004 | US20040117650 Secure media peripheral association in a media exchange network |
| 06/17/2004 | US20040117638 Method for incorporating facial recognition technology in a multimedia surveillance system |
| 06/17/2004 | US20040117635 Secure legacy media peripheral association with authentication in a media exchange network |
| 06/17/2004 | US20040117632 System and method for limiting access to data |
| 06/17/2004 | US20040117619 Content access in a media network environment |
| 06/17/2004 | US20040117484 Network management in a media network environment |
| 06/17/2004 | US20040117483 License management in a media network environment |
| 06/17/2004 | US20040117440 Media network environment |
| 06/17/2004 | US20040117319 Used article quotation method and system |
| 06/17/2004 | US20040117310 System and method for preventing access to data on a compromised remote device |
| 06/16/2004 | EP1428095A2 External locking mechanism for personal computer memory locations |
| 06/16/2004 | EP1173934B1 Digital radio system |
| 06/16/2004 | CN1505793A Method and system for automatically publishing content |
| 06/16/2004 | CN1505352A Output level adjusting circuit and method thereof for multi-carrier transmitter |
| 06/16/2004 | CN1505313A Elliptic curve signature and signature verification method and apparatus |
| 06/16/2004 | CN1505306A Elliptic curve encryption and decryption method and apparatus |
| 06/16/2004 | CN1154105C System and method for copy protection for digital signals |
| 06/15/2004 | US6751320 Method and system for preventing reproduction of professional photographs |
| 06/10/2004 | WO2003042927A3 Using real random number generator as proof of time |
| 06/10/2004 | US20040111694 Method and apparatus for distributing enforceable property rights |
| 06/10/2004 | US20040109565 Method and system for encrypting or decrypting an image code block |
| 06/10/2004 | US20040109561 Lean multiplication of multi-precision numbers over GF(2m) |
| 06/10/2004 | US20040109511 Output level adjusting circuit and method thereof for multi-carrier transmitter |
| 06/09/2004 | CN1153403C Apparatus and method for generating pseudorandom quantities based upon radio channel cahracteristics |
| 06/08/2004 | USRE38529 Scramble/descramble method and apparatus for data broadcasting |
| 06/08/2004 | US6748395 System and method for dynamic playlist of media |
| 06/08/2004 | US6748012 Multiuser receiver and communication system that performs multicode transmission |
| 06/03/2004 | WO2004047313A2 Methods and systems acquiring impulse signals |
| 06/03/2004 | WO2004046862A2 System and method for granting access to an item or permission to use an item based on configurable conditions |
| 06/03/2004 | WO2003071569A9 Analytical instruments using a pseudorandom array of sample sources, such as a micro-machined mass spectrometer or monochromator |
| 05/26/2004 | EP1421731A1 Compensation for non-linear distortion in a modem receiver |
| 05/26/2004 | EP0907269B1 Encryption device for information in binary code |
| 05/26/2004 | CN1151673C Multimedia adaptive scrambling system (MASS) |
| 05/25/2004 | US6741636 System and method for converting data into a noise-like waveform |
| 05/21/2004 | WO2004042975A1 Encrypting and decrypting optical communicaions with matched encoders and decoders |
| 05/21/2004 | WO2004042501A2 Intelligent internet bargaining system |
| 05/21/2004 | WO2003081401A8 Method and apparatus for dynamic personal identification number management |
| 05/21/2004 | CA2504600A1 Intelligent internet bargaining system |
| 05/20/2004 | US20040098341 Method for renting video and audio media through the internet |
| 05/18/2004 | US6738905 Conditional access via secure logging with simplified key management |
| 05/18/2004 | US6738874 Controller architecture and strategy for small discontiguous accesses to high-density memory devices |
| 05/18/2004 | US6738411 Simultaneous plural code series generator and CDMA radio receiver using same |
| 05/13/2004 | WO2004040890A1 Access request control method, driver program for communication device, and communication device |
| 05/12/2004 | EP1417609A2 Method for reissuing indicium in a postage metering system |
| 05/11/2004 | US6735310 Technique of password encryption and decryption for user authentication in a federated content management system |
| 05/11/2004 | US6735297 System for maintaining PBX license key information in the event of a hardware failure reducing MTTR |
| 05/11/2004 | US6735264 Compensation for non-linear distortion in a modem receiver |
| 05/11/2004 | CA2318509C System and method for copy protection for digital signals |
| 05/06/2004 | WO2004038975A2 Efficient encryption and authentication for data processing systems |
| 05/06/2004 | US20040086118 Encrypting and decrypting optical communications with matched encoders and decoders |
| 05/06/2004 | US20040086115 Image public key generation method |
| 05/06/2004 | CA2493569A1 Efficient encryption and authentication for data processing systems |
| 05/05/2004 | CN1494252A Encryption communication method and device |
| 05/04/2004 | US6731674 Device and method for generating quasi-orthogonal code and spreading channel signals in mobile communication system |
| 04/29/2004 | WO2004036802A1 Cryptographically secure person identification |
| 04/29/2004 | WO2004036762A2 Encryption processing method and device of a voice signal |
| 04/29/2004 | WO2003010669A9 Wireless access system, method, signal, and computer program product |
| 04/29/2004 | US20040083487 Content and key distribution system for digital content representing media streams |
| 04/29/2004 | US20040081471 Method and apparatus for providing data confidentially for very high-speed multiple-wavelength optical data links |
| 04/29/2004 | US20040081333 Method and system for securing compressed digital video |
| 04/29/2004 | CA2497737A1 Cryptographically secure person identification |
| 04/28/2004 | EP1412868A1 Computer software product for data security of sensitive words characters or icons |
| 04/28/2004 | EP1034665B1 Device and method for generating quasi-orthogonal code and spreading channel signals in mobile communication system |
| 04/28/2004 | CN1492604A Step transmission quantum safety direct communication method |
| 04/28/2004 | CN1148065C Method and equipment for video signal ciphering and deciphering |
| 04/27/2004 | US6728305 Simultaneous plural code series generator and CDMA radio receiver using same |
| 04/22/2004 | WO2004017592A8 System and method for secure control of resources of wireless mobile communication device |
| 04/22/2004 | US20040078335 Transportation security system and method that supports international travel |
| 04/21/2004 | EP1410213A2 Mobile application access control list security system |
| 04/21/2004 | EP1410212A1 Wireless access system, method, signal, and computer program product |
| 04/21/2004 | EP1410143A2 Processor with protected test and debug mode |
| 04/21/2004 | EP1057299A4 Information access control system and method |
| 04/21/2004 | CN2613111Y Enciphered data conversion transmitting-receiving device |
| 04/21/2004 | CN1147083C Method for cryptographic conversion of L-bit input blocks of digital data into L-bit output blocks |
| 04/20/2004 | US6724838 Methods and apparatus to despread dual codes for CDMA systems |
| 04/15/2004 | WO2004032418A2 Secure audio stream scrambling system |
| 04/15/2004 | WO2004032097A1 Block encoding/decoding method, circuit, and device |
| 04/15/2004 | WO2003077955A9 System and method for expressing usage rights using modulated signals |
| 04/15/2004 | US20040073514 Method for printing digital works |
| 04/14/2004 | CN1146178C Method and appts. for data processing |
| 04/14/2004 | CN1146132C Device and method for generating spread spectrum signals |
| 04/08/2004 | WO2004030297A1 Method for the transmission of data telegrammes in a switched cyclical communication system |
| 04/08/2004 | WO2003091844A3 Securitization of sales participation certificates |
| 04/08/2004 | US20040068651 Optical device for identifying friends and foes using real-time optical encryption and method for producing the same |
| 04/08/2004 | CA2499618A1 Method for the transmission of data telegrams in a switched cyclical communication system |
| 04/07/2004 | EP1068688A4 Method and apparatus for joint detection of data in a direct sequence spread spectrum communications system |