| 6892308 |
Internet protocol telephony security architecture |
| May-10-2005 |
A system is provided in which a client/server/network can implement a key management session when the server initiates the key management session utilizing a nonce. The nonce allows a wakeup or trigger... |
| 5818935 |
Internet enhanced video system |
| Oct-6-1998 |
A system for accessing the Internet based on an Internet information pointer encoded in a video signal. The system includes a video display adapted to display a video portion of the video signal. The system... |
| 6854061 |
Installing and controlling trial software |
| Feb-8-2005 |
According to one aspect of the invention, a method of creating a trial software product on a target system is provided. The method consists of intercepting file system calls from an installation process... |
| 6831981 |
Information transceiver system |
| Dec-14-2004 |
In an information transceiver system for transmitting/receiving specific information, an information transmission device transmits a key message in which a specific information cipher key is ciphered with... |
| 6978376 |
Information security architecture for encrypting documents for remote access while maintaining access control |
| Dec-20-2005 |
A method of controlling distribution of a segment of encrypted electronic information is presented. A key server receives a protected copy of a decryption key for the segment. The segment is retrieved... |
| 6704419 |
Information providing system |
| Mar-9-2004 |
An information providing terminal 3 notifies a mobile information terminal 1 of an item and a ciphered information body when a circuit between the mobile information terminal 1 and the information providing... |
| 6728379 |
Information processor and information processing method |
| Apr-27-2004 |
An information processor receives at a communication section thereof an encrypted content decryption key generated by encrypting, by a distribution encryption key, a content decryption key for decryption... |
| 6085323 |
Information processing system having function of securely protecting confidential information |
| Jul-4-2000 |
An information processing system includes a first information processing apparatus and a second information processing apparatus arranged separate from the first information processing apparatus and capable... |
| 6708272 |
Information encryption system and method |
| Mar-16-2004 |
An encryption system permits end-to-end encryption of information over an untrusted interconnection network. The information encryption system includes at least one client for processing information. The... |
| 7003117 |
Identity-based encryption system for secure data distribution |
| Feb-21-2006 |
A system is provided that allows encrypted content to be distributed to users over a communications network. A policy enforcement service may use an identity-based encryption algorithm to generate public... |
| 6530020 |
Group oriented public key encryption and key management system |
| Mar-4-2003 |
In a public key encryption system where an individual is used as a unit, an idea of "group" is newly introduced. Then, both an encryption process operation of a plain text by an arbitrary member belonging... |
| 6813357 |
Exclusive key sharing method |
| Nov-2-2004 |
In a set-up phase, the base station formulates the secret key S and holds it in secret. The secret information Si which are obtained by dividing the secret key S are distributed in secret to respective... |
| 6941457 |
Establishing a new shared secret key over a broadcast channel for a multicast group based on an old shared secret key |
| Sep-6-2005 |
An optimized approach for arriving at a shared secret key in a dynamically changing multicast or broadcast group environment is disclosed. In one aspect of the invention, a method is provided for communicating... |
| 6792545 |
Enterprise computer investigation system |
| Sep-14-2004 |
A method, apparatus and system for secure forensic investigation of a target machine by a client machine over a communications network. In one aspect the method comprises establishing secure communication... |
| 6189100 |
Ensuring the integrity of remote boot client data |
| Feb-13-2001 |
A remote boot process uses a secret to sign and/or seal the data necessary to remotely boot a client from a server on a network to ensure the integrity of the data. The secret is generated by the server... |
| 6460137 |
Encryption processing system |
| Oct-1-2002 |
A random-number generator generates first and second title keys on the basis of random numbers. A first DES encryption circuit for the title encrypts input data with the first title key. Initial values... |
| 6351536 |
Encryption network system and method |
| Feb-26-2002 |
A key used for deciphering ciphertext is safely transmitted, to establish simple encryption communication. A transmitter and a receiver are connected through a network such that they can communicate with... |
| 6950522 |
Encryption key updating for multiple site automated login |
| Sep-27-2005 |
A version number is associated with an encrypted key executable to allow real time updating of keys for a system which facilitates users signing on to multiple websites on different domains using an encrypted... |
| 6842523 |
Encryption apparatus, cryptographic communication system, key recovery system, and storage medium |
| Jan-11-2005 |
In an encryption apparatus for encrypting a data body to contain an encrypted data body in transmission data and transmitting the transmission data to a receiver, the transmission data includes sender's... |
| 6058476 |
Encryption apparatus for ensuring security in communication between devices |
| May-2-2000 |
In the first devices, MPU 53 generates random number R1 as challenge data. Random number R3 is generated by first encryption IC 54, and then combined with random number R1, encrypted, and sent to second... |
| 6151394 |
Encrypted communication system that limits the damage caused when a secret key has been leaked |
| Nov-21-2000 |
In an encrypted transmission system composed of one transmission apparatus 10 and twenty-eight reception apparatuses A1-G4 that are classified into seven groups A-G, two secret key exclusively selected... |
| 4809327 |
Encrtption of messages employing unique control words and randomly chosen encryption keys |
| Feb-28-1989 |
In a communication network, a transmitting station sends encrypted messages for selective decryption in any one of several receiving stations. To that end, the transmitting station stores a single set... |
| 6256391 |
Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method |
| Jul-3-2001 |
The invention provides an enciphering apparatus and method, a deciphering apparatus and method and an information processing apparatus and method by which illegal copying can be prevented with certainty.... |
| 6915434 |
Electronic data storage apparatus with key management function and electronic data storage method |
| Jul-5-2005 |
A storage apparatus includes a key management unit for managing an individual key unique to the apparatus and a common key shared with other storage apparatuses, and an encryption unit for performing an... |
| 6954854 |
Electronic authentication method, electronic authentication apparatus and electronic authentication storage medium |
| Oct-11-2005 |
According to the invention, techniques for verifying that data input as a response to presented contents is true input data for a content access. In a representative embodiment according to the present... |
| 6343361 |
Dynamic challenge-response authentication and verification of identity of party sending or receiving electronic communication |
| Jan-29-2002 |
Methods and systems for verifying and authenticating the identity of participants in electronic communication. The identity of a recipient communication device, such as a computer, can be verified. A primary... |
| 6263435 |
Dual encryption protocol for scalable secure group communication |
| Jul-17-2001 |
A logical tree structure and method for managing membership in a multicast group provides scalability and security from internal attacks. The structure defines key groups and subgroups, with each subgroup... |
| 6067076 |
Docking system with docking port for establishing secure wireless connection between computer devices |
| May-23-2000 |
A docking system and method for establishing secure wireless connection between computer devices is presented. The technique assumes that at least one of the computer devices comprises a portable device.... |
| 5930368 |
Docking method for establishing secure wireless connection between computer devices |
| Jul-27-1999 |
A docking method for establishing secure wireless connection between computer devices is presented. The technique assumes that at least one of the computer devices comprises a portable device. Further,... |
| 6240188 |
Distributed group key management scheme for secure many-to-many communication |
| May-29-2001 |
A group key management system and method for providing secure many-to-many communication is presented. The system employs a binary distribution tree structure. The binary tree includes a first internal... |
| 6584566 |
Distributed group key management for multicast security |
| Jun-24-2003 |
A method and apparatus for distributed group key management for multicast security. According to one aspect of the invention, an initiator key server distributes to a plurality of key servers a first key... |
| 7012932 |
Digital broadcast data receiving apparatus |
| Mar-14-2006 |
A digital broadcast data receiving apparatus comprises a plurality of broadcast data receiving units for receiving digital broadcast data supplied from a plurality of digital broadcast data sources, respectively... |
| 6674861 |
Digital audio watermarking using content-adaptive, multiple echo hopping |
| Jan-6-2004 |
A method, an apparatus and a computer program product for adaptive, content-based watermark embedding of a digital audio signal (100) are disclosed. Corresponding watermark extracting techniques are also... |
| 6467039 |
Device in a system operating with can-protocol and in a control and/or supervision system |
| Oct-15-2002 |
A control or supervision system incorporates a digital serial communication and modules which are mutually communication communicable to this and operate with CAN-protocol. A control desk can be wirelessly... |
| 6516415 |
Device and method of maintaining a secret code within an integrated circuit package |
| Feb-4-2003 |
A device and method for safely maintaining a secret code within an integrated circuit (IC) package. The complete secret code is divided into two parts. The first part of the secret code is stored in a... |
| 6571337 |
Delayed secure data retrieval |
| May-27-2003 |
A method, apparatus and article of manufacture for a computer-implemented method of delayed secure data retrieval. Actual data entities are not packed into an information entity. Rather, the data entities... |
| 4782529 |
Decryption of messages employing unique control words and randomly chosen decryption keys |
| Nov-1-1988 |
In a communication network, a transmitting station sends encrypted messages to several receiving stations. Each receiving station stores one and the same set of decryption keys; and it stores a control... |
| 6373952 |
Data transmitting apparatus, data transmitting method, data receiving apparatus, data receiving method, data transmission apparatus, and data transmission method |
| Apr-16-2002 |
The present invention provides a data transmission apparatus which enhances the safety with respect to leakage of encoded transmitted data by raising the safety of transmission of an encoding key or a... |
| 6076077 |
Data management system |
| Jun-13-2000 |
A system for dealing in an original data content and an edited data content. A data content is handled as an object, and the data content is edited by editing a data content, functioning as an object,... |
| 6490353 |
Data encrypting and decrypting apparatus and method |
| Dec-3-2002 |
A crytography method of encrypting data is disclosed. The method provides for creating or selecting a master key. Thereafter, the data to be encrypted is segmented into data blocks of equal or variable... |
| 6721887 |
Data copyright management system |
| Apr-13-2004 |
A system is provided which manages the copyright of a plurality of data in a database. A data copyright management system is provided in which a primary user edits data which he or she obtains and supplies... |
| 6463536 |
Data copyright management system |
| Oct-8-2002 |
A system is provided which manages the copyright of a plurality of data in a database. A data copyright management system is provided in which a primary user edits data which he or she obtains and supplies... |
| 6343283 |
Data copyright management system |
| Jan-29-2002 |
A data copyright management system is provided, in which a primary user edits a received data and supplies the edited data to a secondary user. The copyright management system comprises a database and... |
| 6097818 |
Data copyright management method |
| Aug-1-2000 |
The present invention provides a process for managing data copyright in the case when a primary user produces new data by editing a plurality of original data which have been supplied from data broadcasting,... |
| 7039617 |
Currency and float ID tracking in an electronic purse |
| May-2-2006 |
The present invention relates to electronic purse systems, and in particular it relates to the improved management of multiple money flows in such systems. According to the basic principles of the present... |
| 6446205 |
Cryptosystems with elliptic curves chosen by users |
| Sep-3-2002 |
Participants in a cryptosystem select their own elliptic curve and finite field, rather than using a centrally chosen elliptic curve. The curve is chosen from a predetermined set of elliptic curves expressed... |
| 4694491 |
Cryptographic system using interchangeable key blocks and selectable key fragments |
| Sep-15-1987 |
A cryptographic system is used for the secure transmission of digitized signals to a plurality of receivers. At the transmission end, a key consisting of two blocks, each including a plurality of key fragments,... |
| 6336186 |
Cryptographic system and methodology for creating and managing crypto policy on certificate servers |
| Jan-1-2002 |
A cryptosystem having a Certificate (Key) Server for storing and maintaining certificate or key information in a certificate database is described. The Certificate Server allows clients to submit and retrieve... |
| 6028935 |
Cryptographic receiver |
| Feb-22-2000 |
A cryptographic receiver (10) includes photon detectors (52, 54, 56, 58) arranged to detect photons arriving from filters (22) and (24). A fiber coupler (14) randomly distributes each received photon (16)... |
| 6073122 |
Cryptographic method and apparatus for restricting access to transmitted programming content using extended headers |
| Jun-6-2000 |
A system for restricting access to transmitted programming content is disclosed, which transmits the encryption key used to encrypt the program to the customer with the encrypted programming content. A... |
