Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 9 - Arrangements for secret or secure communication
Patents for H04L 9 - Arrangements for secret or secure communication (111,914)
03/1999
03/25/1999WO1999003246A3 Methods and apparatus for enhanced security expansion of a secret key into a lookup table for improved security for wireless telephone messages
03/25/1999WO1999001993A3 Operation and maintenance system for a mobile telecommunications network
03/25/1999WO1998058322A3 Security apparatus for data transmission with dynamic random encryption
03/25/1999CA2304016A1 Method for requesting and transferring information in a digital audio broadcasting system
03/25/1999CA2303354A1 System and method for securing speech transactions
03/25/1999CA2302784A1 Improved block cipher method
03/24/1999EP0903943A2 Method and apparatus for superposing a digital watermark and method and apparatus for detecting a digital watermark
03/24/1999EP0903942A2 Apparatus for superimposing a digital watermark in a video signal and apparatus for detecting the same
03/24/1999EP0903887A2 Cellular telephony authentication arrangement
03/24/1999EP0903886A2 Information transmission method and apparatus for combining multiplexing and encryption
03/24/1999EP0903665A2 Physical random number generator, method of generating physical random numbers and physical random number storing medium
03/24/1999EP0903027A1 Process for group-based cryptographic code management between a first computer unit and group computer units
03/24/1999EP0903026A1 Process for cryptographic code management between a first computer unit and a second computer unit
03/24/1999EP0704124A4 A cryptographic method
03/24/1999CN1211776A 通信系统和通信方法 A communication system and a communication method
03/24/1999CN1211775A Information transmission method and apparatus therefor
03/23/1999US5887064 Cryptographic equipment
03/23/1999US5887063 Communication system for portable appliances
03/23/1999US5887061 Compression coding device with scrambling function and expansion reproducing device with descrambling function
03/23/1999CA2165874C Method for secure session key generation
03/18/1999WO1999013613A1 Tamper resistant methods and apparatus
03/18/1999WO1999013612A1 Method of loading commands in the security module of a terminal
03/18/1999WO1999013436A2 Data medium authentication method
03/18/1999WO1999013415A1 A digital trust center for medical image authentication
03/18/1999WO1998047260A3 Publicly verifiable key recovery
03/18/1999CA2295887A1 Method of loading commands in the security module of a terminal
03/17/1999EP0902598A1 Telephonic device including a base station and at least a single handset, subscription process for the handset, the handset itself and its corresponding base station
03/17/1999EP0902568A2 Method for transmitting encrypted messages
03/17/1999EP0902549A2 Device and method for bi-orthogonal code hopping multiple access communication
03/17/1999EP0902352A2 Authentication apparatus, user authentication method, user authentication card and storage medium
03/17/1999EP0830750B1 Apparatus and method of transmitting and receiving information in a wireless telecommunications system
03/17/1999EP0731941A4 Data verification system and method
03/17/1999CN1211363A Communication method using common cryptographic key
03/17/1999CN1211362A Communication method using common key
03/16/1999US5884272 Method and system for establishing and maintaining user-controlled anonymous communications
03/16/1999US5884270 Method and system for facilitating an employment search incorporating user-controlled anonymous communications
03/16/1999US5883958 Method and device for data decryption, a method and device for device identification, a recording medium, a method of disk production, and a method and apparatus for disk recording
03/16/1999US5883956 Dynamic configuration of a secure processing unit for operations in various environments
03/16/1999CA2149744C Protected distribution protocol for keying and certificate material
03/11/1999WO1999012310A1 Encryption of data packets using a sequence of private keys generated from a public key exchange
03/11/1999WO1999012309A1 System for generating sub-keys
03/11/1999WO1999012307A1 Multi-tier electronic software distribution
03/11/1999WO1999012144A1 Digital signature generating server and digital signature generating method
03/11/1999WO1999012121A1 Method of checking the authenticity of an electric circuit arrangement
03/11/1999WO1999012088A1 Method for controlling distribution and use of software products with network-connected computers
03/11/1999WO1998059457A3 Method and system for performing secure electronic monetary transactions
03/11/1999DE19739448A1 Verfahren zur Echtheitsprüfung eines Datenträgers A method for validating a data carrier
03/11/1999CA2302200A1 Digital signature generating server and digital signature generating method
03/11/1999CA2301090A1 Multi-tier electronic software distribution
03/10/1999EP0901069A2 A method of and an apparatus for generating pseudo-random numbers
03/10/1999EP0901060A2 Secure data control apparatus and method
03/10/1999EP0900492A1 Device and method for dynamic encryption
03/10/1999EP0900491A1 A method and apparatus for using network address information to improve the performance of network transactions
03/09/1999US5881155 Security device for a semiconductor chip
03/09/1999US5881154 Data scramble transmission system
03/09/1999US5881153 Remote keyless entry encryption algorithm
03/04/1999WO1999011042A1 Wireless network
03/04/1999WO1999011022A1 Computer access control
03/04/1999WO1999011021A2 Remote image capture with centralized processing and storage
03/04/1999WO1999011020A1 Hiding of encrypted data
03/04/1999WO1999010859A2 Steganographic encryption system for secure data
03/04/1999WO1999010848A1 Portable electronic device for safe communication system, and method for initialising its parameters
03/04/1999WO1999010809A1 Software publisher configurable software security mechanism
03/04/1999WO1999010793A1 Procedure for accessing a service in a data communication system, and a data communication system
03/04/1999DE19737693A1 Verfahren zur Überprüfung der Unverfälschtheit einer elektrischen Schaltung Procedures to verify the authenticity of an electrical circuit
03/04/1999CA2300933A1 Portable electronic device for safe communication system, and method for initialising its parameters
03/03/1999EP0899956A2 Cryptographic method and apparatus for restricting access to transmitted programming content using program identifiers
03/03/1999EP0899907A2 Apparatus for processing bivectors and encrypting system including the same
03/03/1999EP0899648A2 Computer architecture with automatic disabling of hardware/software features using satellite positioning data
03/03/1999EP0899647A2 Remote security technology
03/03/1999EP0898747A1 A protection method against eeprom-directed intrusion into a mobile communication device that has a processor, and a device having such protection mechanism
03/03/1999EP0673578B1 Apparatus and method for use in a digital cable headend for cable television delivery system
03/03/1999CN1209939A Management of authentication keys in mobile communication system
03/03/1999CN1209712A Communication system, mobile terminal and registering method of network communicating to terminal
03/02/1999US5878144 Digital certificates containing multimedia data extensions
03/02/1999US5878142 Pocket encrypting and authenticating communications device
03/02/1999US5878140 Limited-traceability systems
03/02/1999US5878136 Encryption key control system for mail processing system having data center verification
03/02/1999US5878135 Decoding system for processing encrypted broadcast, cable or satellite video data
03/02/1999US5878075 Method of and apparatus for generating a pseudorandom noise sequence
02/1999
02/25/1999WO1999009743A2 Conditional access system
02/25/1999WO1999009700A1 System and method for reliable key transfer
02/25/1999WO1999009699A1 Cryptographic key exchange using pre-computation
02/25/1999WO1999009471A1 Hardware efficient implementation of software efficient pseudo-random number generator
02/25/1999WO1998054869A3 Method and apparatus for providing security in a star network connection using public key cryptography
02/25/1999WO1998053635A3 Device for monitoring a connection setup
02/25/1999WO1998047262A3 Methods and apparatus for multiple-iteration cmea encryption and decryption for improved security for wireless telephone messages
02/25/1999WO1998038759A3 Generic user authentication for network computers
02/25/1999DE1803062C1 Synchronisation device for random number generators
02/24/1999EP0898425A2 Cryptographic method and apparatus for restricting access to transmitted programming content using extended headers
02/24/1999EP0898397A2 Method for sending a secure communication in a telecommunications system
02/24/1999EP0898396A2 Electronic watermark system, electronic information distribution system, and image filing apparatus
02/24/1999EP0898260A1 Method and system for controlling key for electronic signature
02/24/1999EP0897613A1 Circuit arrangement for generating random bit sequences
02/24/1999EP0723726B1 System and apparatus for blockwise encryption/decryption of data
02/24/1999CN1209017A Cryptographic method and apparatus for restricting access to transmitted programming content using program identifiers
02/24/1999CN1209016A Cryptographic method and apparatus for restricting access to transmitted programming content using extended headers
02/24/1999CN1208925A Device, method and recording medium for preventing non-authorized data copying having secret code copying manager information
02/23/1999US5875296 Distributed file system web server user authentication with cookies
02/23/1999US5875248 Method of counterfeit detection of electronic data stored on a device
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