| Patents for G09C 1 - Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system (12,544) |
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| 08/18/1999 | EP0936812A1 Method and apparatus for recording of encrypted digital data |
| 08/18/1999 | EP0936805A1 Document transfer systems |
| 08/18/1999 | EP0935859A2 Methods and apparatus for enhanced security expansion of a secret key into a lookup table for improved security for wireless telephone messages |
| 08/18/1999 | EP0935858A1 Method for data decorrelation |
| 08/17/1999 | US5940513 Computer-readable medium |
| 08/12/1999 | WO1999040702A1 Method and apparatus for efficient authentication and integrity checking using hierarchical hashing |
| 08/12/1999 | WO1999040546A1 Protocol between an electronic key and an lock |
| 08/11/1999 | EP0935365A1 Procedure to implement security in the CMIP protocol |
| 08/11/1999 | CN1225739A Cryptographic method, apparatus and systems for storage media electronic rights management in closed and connected appliances |
| 08/10/1999 | US5937066 Two-phase cryptographic key recovery system |
| 08/10/1999 | US5936149 Personal date/time notary device |
| 08/10/1999 | US5935243 Licensee notification system |
| 08/05/1999 | WO1999039476A1 Secure one-way authentication communication system |
| 08/04/1999 | EP0932955A1 Self-decrypting digital information system and method |
| 08/04/1999 | EP0870272A4 Reader using moving averages to break the (n,k) code barrier for upc, ean, and others |
| 08/04/1999 | CN1224962A Cryptograph key distribution system |
| 08/03/1999 | US5931905 TV mail system |
| 07/29/1999 | WO1999038093A1 Content addressable information encapsulation, representation, and transfer |
| 07/29/1999 | WO1999038092A1 Access to content addressable data over a network |
| 07/29/1999 | CA2318909A1 Access to content addressable data over a network |
| 07/28/1999 | EP0932272A2 Encryption strength evaluation support apparatus and recording medium recording encryption strength evaluation support program |
| 07/28/1999 | EP0932124A1 Integrated circuit and smart card comprising such a circuit |
| 07/28/1999 | EP0932109A2 A method for authentification item |
| 07/27/1999 | US5930365 Digital data shuffling/de-shuffling system |
| 07/22/1999 | WO1999036942A1 Method for the cryptographic conversion of binary data blocks |
| 07/22/1999 | WO1999036917A1 Electronic bookshelf with multi-user features |
| 07/20/1999 | US5926550 Peripheral device preventing post-scan modification |
| 07/20/1999 | US5926548 Method and apparatus for implementing hierarchical electronic cash |
| 07/20/1999 | CA2134133C Anonymous credit card transactions |
| 07/15/1999 | WO1999035801A1 System for transmitting subscription information and content to a mobile device |
| 07/15/1999 | WO1999035799A2 A method for packet authentication in the presence of network address translations and protocol conversions |
| 07/15/1999 | WO1999035785A2 Transmitting revisions with digital signatures |
| 07/15/1999 | WO1999035783A1 Client side public key authentication method and apparatus with short-lived certificates |
| 07/15/1999 | WO1999035781A2 Method for generating asymmetrical cryptographic keys by the user |
| 07/15/1999 | WO1999035647A1 System and method for copy protection for digital signals |
| 07/15/1999 | WO1999035617A1 Method and system for controlling access to a resource limited to certain time frames |
| 07/15/1999 | WO1999035586A2 Personal computer and personal computer add-on card |
| 07/15/1999 | DE19801241A1 Verfahren zur Generierung asymmetrischer Kryptoschlüssel beim Anwender Method for generating asymmetric crypto-key the user |
| 07/15/1999 | CA2434734A1 Method of copy protecting signals |
| 07/15/1999 | CA2434702A1 Method of copy protecting signals |
| 07/15/1999 | CA2314983A1 System for transmitting subscription information and content to a mobile device |
| 07/15/1999 | CA2313328A1 Client side public key authentication method and apparatus with short-lived certificates |
| 07/15/1999 | CA2282479A1 Transmitting revisions with digital signatures |
| 07/14/1999 | EP0928526A1 Methods and apparatus for enhanced cmea employing enhanced transformations |
| 07/14/1999 | EP0807346A4 Cd-prom |
| 07/13/1999 | US5922074 Method of and apparatus for providing secure distributed directory services and public key infrastructure |
| 07/08/1999 | WO1999034554A2 Administration and utilization of secret fresh random numbers in a networked environment |
| 07/08/1999 | WO1999034552A2 Cryptographic system and method with fast decryption |
| 07/08/1999 | WO1999034548A2 System and method for deriving an appropriate initialization vector for secure communications |
| 07/07/1999 | EP0927975A2 Access control device for a service-on-demand system |
| 07/07/1999 | EP0927963A2 Closed system virtual postage meter |
| 07/07/1999 | EP0927473A1 Methods and apparatus for enhanced cmea including a cmea iteration preceded and followed by transformations and employing an involuntary lookup |
| 07/07/1999 | CN1222275A Appts. and method for secure communication based on channel characteristics |
| 07/07/1999 | CN1222272A Method and appts. for data processing |
| 07/01/1999 | WO1999033222A1 Method and apparatus for secure cryptographic key storage, certification and use |
| 07/01/1999 | WO1999033221A1 Secure proxy signing device and method for use |
| 07/01/1999 | WO1999033011A1 Portable 1-way wireless financial messaging unit |
| 07/01/1999 | CA2313798A1 Portable 1-way wireless financial messaging unit |
| 06/30/1999 | EP0926624A2 Intergrated circuit for embeddding in smart cards, and method of issuing smart cards |
| 06/30/1999 | EP0926595A2 Apparatus and method for translating with decoding function |
| 06/30/1999 | CN1221507A Method and device for loading input data into algorithm during authentication |
| 06/29/1999 | US5917912 Component assembly |
| 06/29/1999 | US5917852 Data scrambling system and method and communications system incorporating same |
| 06/29/1999 | CA2136166C Document copying deterrent method |
| 06/24/1999 | WO1999031845A1 Method for making secure the transmission of a message from a transmitting device to a receiving device |
| 06/24/1999 | WO1999031844A1 Device for authenticating digital images |
| 06/24/1999 | WO1999031841A1 Method for strongly authenticating another process in a different address space |
| 06/23/1999 | EP0923842A2 System for preventing electronic memory tampering |
| 06/23/1999 | EP0923827A1 Method and apparatus for encrypting radio traffic in a telecommunications network |
| 06/23/1999 | EP0923826A1 Device and method for the cryptographic processing of a digital data stream presenting any number of data |
| 06/23/1999 | CN1220431A Closed system virtual postage meter |
| 06/22/1999 | US5915025 Data processing apparatus with software protecting functions |
| 06/22/1999 | US5915024 Electronic signature addition method, electronic signature verification method, and system and computer program product using these methods |
| 06/22/1999 | US5915021 Method for secure communications in a telecommunications system |
| 06/22/1999 | US5915019 Systems and methods for secure transaction management and electronic rights protection |
| 06/17/1999 | WO1999030458A1 Transformation methods for optimizing elliptic curve cryptographic computations |
| 06/17/1999 | WO1999012143A3 Device for storing codes |
| 06/17/1999 | CA2310588A1 Transformation methods for optimizing elliptic curve cryptographic computations |
| 06/16/1999 | EP0923062A1 Cipher processor, IC card and cipher processing method |
| 06/16/1999 | EP0862824A4 Remote-auditing of computer generated outcomes using cryptographic and other protocols |
| 06/16/1999 | CN1219728A Optical disc copy management system |
| 06/15/1999 | US5913175 Method of making the use of a terminal of a cellular mobile radio system more secure, and corresponding terminal and user card |
| 06/10/1999 | WO1999014880A3 A method and device for executing a decrypting mechanism through calculating a standardized modular exponentiation for thwarting timing attacks |
| 06/10/1999 | DE19753933A1 Access control for service-on-demand system, e.g. pay television |
| 06/09/1999 | EP0920753A1 Public key cryptosystem method and apparatus |
| 06/09/1999 | EP0722642A4 Multistream encryption system for secure communication |
| 06/08/1999 | US5910989 Method for the generation of electronic signatures, in particular for smart cards |
| 06/08/1999 | US5910987 Systems and methods for secure transaction management and electronic rights protection |
| 06/08/1999 | US5910986 Methods and apparatus for sending electronic data signals |
| 06/03/1999 | WO1999027504A1 Method for managing data in a smart card |
| 06/03/1999 | WO1999027437A1 Apparatus for multiprecision integer arithmetic |
| 06/03/1999 | WO1998052162A3 Secure multiple application card system and process |
| 06/03/1999 | CA2310122A1 Method for managing data in a smart card |
| 05/27/1999 | WO1999026188A1 A remotely accessible private space using a fingerprint |
| 05/27/1999 | WO1998052161A3 Key transformation unit for an ic card |
| 05/26/1999 | EP0918274A2 System and method for securing and validating data using signatures, encryption, and feedback |
| 05/26/1999 | EP0917781A1 Simultaneous electronic transactions with visible trusted parties |
| 05/26/1999 | EP0706735B1 Method for cryptographic authentication of transmitted messages using pseudorandom numbers |
| 05/25/1999 | US5907620 Method and apparatus for enforcing the use of cryptography in an international cryptography framework |
| 05/20/1999 | WO1999025092A1 Masked digital signatures |