| 6907123 |
Secure voice communication system |
| Jun-14-2005 |
A secure real time voice communication system 70 is provided that allows for the secure transmission of voice communications between a sending device 72 and a receiving device 78 through the public switch... |
| 6904520 |
Method and system for ensuring the securing of computer servers of games |
| Jun-7-2005 |
The invention concerns a method and a system enabling gamesters (11) of a virtual casino to accede safely and rapidly, by means of a microphone (17) connected to a communication network (15), to the different... |
| 6901512 |
Centralized cryptographic key administration scheme for enabling secure context-free application operation |
| May-31-2005 |
In scalable multi-node systems, applications that interact with remote users often use sessions that involve multiple messages. Unless the application instance that initiates the conversation processes... |
| 6901145 |
Generation of repeatable cryptographic key based on varying parameters |
| May-31-2005 |
A repeatable cryptographic key is generated based on varying parameters which represent physical measurements. Locations within a share table, which locations store valid and invalid cryptographic shares,... |
| 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... |
| 6892306 |
Digital content cryptograph and process |
| May-10-2005 |
A digital cryptograph and encryption process encrypts and transmits in a digital format specific items of information requested by a user of a digital content transmission system by using key information,... |
| 6891953 |
Method and system for binding enhanced software features to a persona |
| May-10-2005 |
A server architecture for a digital rights management system that distributes and protects rights in content. The server architecture includes a retail site which sells content items to consumers, a fulfillment... |
| 6886097 |
Method and apparatus for recording and reproducing information on and from recording medium |
| Apr-26-2005 |
A scrambling key information piece is periodically changed among a plurality of different key information pieces including first and second key information pieces. An input signal is scrambled into a scrambling-resultant... |
| 6883097 |
Coincidence-free media key block for content protection for recordable media |
| Apr-19-2005 |
A system for protecting content on recordable media for, e.g., DVD audio disks, flash memory media, or other media includes providing a media key block (MKB) on each media, with each MKB including 25,000... |
| 6882729 |
System and method for limiting access to data |
| Apr-19-2005 |
A data system includes a secured appliance capable of receiving broadcast programming and a remote control used to transmit data frames to the secured appliance. The secured appliance is provided with... |
| 6873706 |
Processing apparatus, program, or system of secret information |
| Mar-29-2005 |
To provide a secure cryptographic device such as an IC card which can endure TA (Timing Attack), DPA (Differential Power Analysis), SPA (Simple Power Analysis), or the like as an attaching method of presuming... |
| 6871279 |
Method and apparatus for securely and dynamically managing user roles in a distributed system |
| Mar-22-2005 |
One embodiment of the present invention provides a system for managing user attributes that determines access rights in a distributed computing system. The system modifies an attribute database, wherein... |
| 6870932 |
Frame number identification and ciphering activation time synchronization for a wireless communications protocol |
| Mar-22-2005 |
A received PDU is sequentially identified by an n-bit frame number (FN) and an m-bit hyper frame number (HFN), which are synchronously maintained on first and second stations. The second station determines... |
| 6868497 |
Method and apparatus for automatic ID management |
| Mar-15-2005 |
To stop illegal digital content distribution, IDs will be included in the content. However, current ideas of how to use the IDs are unacceptable. The automatic ID management process and apparatus increases... |
| 6868495 |
One-time pad Encryption key Distribution |
| Mar-15-2005 |
Some of these problems with digital information protection systems may be overcome by providing a mechanism which allows a content provider to encrypt digital information without requiring either a hardware... |
| 6868160 |
System and method for providing secure sharing of electronic data |
| Mar-15-2005 |
A system and method for secure sharing of electronic information uses public key encryption in which a key generator algorithmically generates public-private key pairs without requiring storage, maintenance,... |
| 6865671 |
Electronic mail system with authentication methodology for supporting relaying in a message transfer agent |
| Mar-8-2005 |
An electronic mail ("e-mail") system is described that provides a methodology that allows the system to determine when it is appropriate to relay e-mail messages, particularly from "roaming" users. In... |
| 6865550 |
System for secure distribution and playback of digital data |
| Mar-8-2005 |
A method and system for secure distribution and access to digital data, includes providing a plurality of system components; associating a plurality of unique identifiers with different components of the... |
| 6859535 |
Digital content protection system |
| Feb-22-2005 |
The media inherent key storing unit 220 prestores an inherent key Ki, the conversion unit 230 generates an encrypted inherent key Ji from the inherent key read from the media inherent key storing unit... |
| 6859537 |
Non-volatile memory for use with an encryption device |
| Feb-22-2005 |
A Non-Volatile Memory circuit operating as an interface between a key loader and an encryption device. The Non-Volatile Memory circuit includes a microcontroller which stores a crypto key and checkword... |
| 6857072 |
System and method for enabling encryption/authentication of a telephony network |
| Feb-15-2005 |
A system and method for enabling encryption and/or authentication services on a telephony network. A portable information device, such as a personal digital assistant is used to exchange encryption and/or... |
| 6857071 |
System and method for distributing digital works, apparatus and method for reproducing digital works, and computer program product |
| Feb-15-2005 |
An editing apparatus generates a capsular work in which usage conditions for each of plural usages and usage secret information, obtained by encrypting a decryption key encrypted work data with ticket... |
| 6854059 |
Method and apparatus for medium access control in powerline communication network systems |
| Feb-8-2005 |
An inventive Medium Access Control (MAC) protocol for powerline networking systems is described. The inventive MAC protocol controls access to and use of a physical medium (power lines) in a powerline... |
| 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... |
| 6853988 |
Cryptographic server with provisions for interoperability between cryptographic systems |
| Feb-8-2005 |
The invention is a cryptographic server providing interoperability over multiple algorithms, keys, standards, certificate types and issuers, protocols, and the like. Another aspect of the invention is... |
| 6847948 |
Method and apparatus for secure distribution of software/data |
| Jan-25-2005 |
A method and apparatus is disclosed for preventing an unauthorized computer system from using copied software or data. An identification code provided by a client computer is combined with a pre-determined... |
| 6839437 |
Method and apparatus for managing keys for cryptographic operations |
| Jan-4-2005 |
A cryptographic system for use in a data processing system. The system includes a security layer and a plurality of cryptographic routines, wherein the plurality of cryptographic routines are accessed... |
| 6836548 |
Communications security and trusted path method and means |
| Dec-28-2004 |
A trusted path device is described which may be used stand alone or may be retrofitted to a users untrusted computer console or workstation so that an untrusted data input may be displayed on an untrusted... |
| 6834348 |
Digital data recording apparatus, digital data recording method, and computer-readable recording medium |
| Dec-21-2004 |
A data transmit/receive unit receives encrypted digital data distributed through an electronic music distribution system and records the digital data on a primary recording medium. Digital data have been... |
| 6829356 |
Server-assisted regeneration of a strong secret from a weak secret |
| Dec-7-2004 |
Methods for regenerating a strong secret for a user, based on input of a weak secret, such as a password, are assisted by communications exchanges with a set of independent servers. Each server holds a... |
| 6826689 |
Method and system for emulating a secret code between two hardware modules |
| Nov-30-2004 |
A method and system for emulating a secret code between a first hardware module to a second hardware module. First, the secret code that is initially stored in the first hardware module is transformed... |
| 6826687 |
Commitments in signatures |
| Nov-30-2004 |
The present invention provides methods and apparatus for generating a TCR-commitment having properties differing from the properties of a regular commitment. It provides solutions to the problem of packet... |
| 6823068 |
Denial cryptography based on graph theory |
| Nov-23-2004 |
The encryption method disclosed is based on charting a path on a graph, where the graph is the encryption key. The plaintext expresses that path through a sequence of graph vertices, and the ciphertext... |
| 6819766 |
Method and system for managing keys for encrypted data |
| Nov-16-2004 |
A computer system and method manages encryption keys for data. The system and method generates a session key and encrypts given data with the session key. The system and method generates a key encryption... |
| 6816970 |
Security method and system for persistent storage and communications on computer network systems and computer network systems employing the same |
| Nov-9-2004 |
A multi-stage login procedure and system involves a first stage in which a login ID and a public key (encrypted) is transmitted from a client computer to a server computer and a key-exchange key (encrypted)... |
| 6816596 |
Encrypting a digital object based on a key ID selected therefor |
| Nov-9-2004 |
To encrypt a digital object, a key ID is selected for the digital object, and a function .function.( ) having an input and an output is selected. The selected key ID is then employed as the input to the... |
| 6816595 |
Mini time key creation method and system |
| Nov-9-2004 |
To provide a method and a system for creating a mini time key from a time key, a plurality of mini time keys are created within a unit time period. First, a unit time decryption key is prepared immediately... |
| 6813714 |
Multicast conference security architecture |
| Nov-2-2004 |
The present invention is a method and apparatus for securing a session in a system having application and network layers. The session is managed by a session manager. Security components used in the session... |
| 6813358 |
Method and system for timed-release cryptosystems |
| Nov-2-2004 |
A method and system are provided for timed-release cryptography. A sender encrypts data in a timed-release fashion such that a receiver based on information exchanged with a server decrypts the encrypted... |
| 6813356 |
Method and system in a telephone exchange system |
| Nov-2-2004 |
Method and system for updating an encryption key used for the encryption of a password in a telephone exchange system comprising a telephone exchange (LE), a maintenance center (SC), a first database (DB1)... |
| 6810122 |
Secret sharing system and storage medium |
| Oct-26-2004 |
A secret sharing system and a storage medium where each of the n shareholders P1 to Pn holds a (n, n) share di (0.ltoreq.i.ltoreq.n), turns the share di into t(r+1) partial random numbers Sj of the (t,... |
| 6792541 |
Data storage device using certification keys and method to perform access control using certification keys |
| Sep-14-2004 |
A code range which is the range of usable identification codes (corresponding to file names or directory names) is stored in an area defining area corresponding to a directory, and a layer structure in... |
| 6792534 |
End-to end protection of media stream encryption keys for voice-over-IP systems |
| Sep-14-2004 |
The present invention reduces the exposure of keying material to intermediary devices in a communication channel between first and second servers. In one embodiment, a second server receives a first half... |
| 6788788 |
Cryptographic communication method, encryption method, and cryptographic communication system |
| Sep-7-2004 |
A novel cryptographic communication system including ID-NIKS system with high security. Secret key generation functions and key sharing functions are not separable. Key sharing is also probabilistically... |
| 6785823 |
Method and apparatus for authentication in a wireless telecommunications system |
| Aug-31-2004 |
A method and apparatus for allowing a mobile station in a wireless network to perform network authentication in association with mobile packet data services. The packet data serving node (PDSN) does not... |
| 6785809 |
Server group key for distributed group key management |
| Aug-31-2004 |
A method and apparatus for distributed group key management for multicast security. According to one aspect of the invention, a common multicast group includes a number of key servers, as well as clients... |
| 6760445 |
Method for identifying betrayers of proprietary data |
| Jul-6-2004 |
A method for identifying betrayers of proprietary data which enables a betrayer, i.e., an authorized subscriber who has disclosed one of his partial keys to a third person without authorization, to be... |
| 6760439 |
Device for implementing a block-ciphering process |
| Jul-6-2004 |
The invention relates to a device for implementing a block-ciphering process using an encryption/decryption arithmetic-logic module (3) which is supplied with the data stream of word length j.ltoreq.n... |
| 6754820 |
Multiple level access system |
| Jun-22-2004 |
A method of securing an object at an access level includes selecting a profile for a user, including a credential having an encrypted credential public key, an encrypted credential public key encryption... |
| 6754348 |
System and method for determining winner |
| Jun-22-2004 |
A system and method for determining winner is capable of keep all of the voting contents secret with permitting only determination of winning or losing, and further permitting the third party to verify... |
