| 6754349 |
Cryptographic key, or other secret material, recovery |
| Jun-22-2004 |
Secret material, such as a cryptographic key, that is needed for operation of a computer system (4a), can be stored under password protection on a storage medium for insertion into the computer system... |
| 6751735 |
Apparatus for control of cryptography implementations in third party applications |
| Jun-15-2004 |
An apparatus and method provide a controlled, dynamically loaded, modular, cryptographic implementation for integration of flexible policy implementations on policy engines, and the like, into a base executable... |
| 6748539 |
System and method for securely checking in and checking out digitized content |
| Jun-8-2004 |
A system and method for permitting the rental of digitized content such as music from a kiosk includes a flash memory device that is insertable into the kiosk. The kiosk derives a content key from a media... |
| 6748084 |
Data access control system and method thereof |
| Jun-8-2004 |
A data access control system and a method thereof is disclosed. First, the master key is divided into n subkeys to be kept by n holders, by way of secret sharing. The master key reconstruction procedure... |
| 6748082 |
Method and device for introducing a service key into a terminal |
| Jun-8-2004 |
A simple, efficient and reliable introduction of a service key into a terminal is made possible by a method for introducing a service key into a terminal where the terminal can use the service key to decrypt... |
| 6748081 |
Quantum cryptography system for a secure transmission of random keys using a polarization setting method |
| Jun-8-2004 |
A quantum cryptography system using electrooptical liquid crystal modulators which change the polarization and which are designed as electrically rotatable retardation plates whose two birefringent axes... |
| 6744894 |
Data management system |
| Jun-1-2004 |
The present invention provides a system to ensure security of data in a computer network system. A center certifies a public-key of user of the system and distributes a secret-key. A first system comprises... |
| 6742119 |
Time stamping method using time delta in key certificate |
| May-25-2004 |
A method for time stamping a digital document is disclosed. The document originator creates a time stamp receipt by combining the document and a digital time indication. The time stamp receipt is submitted... |
| 6738907 |
Maintaining a soft-token private key store in a distributed environment |
| May-18-2004 |
Methods, systems, and devices are provided for securely updating private keys, key pairs, passwords, and other confidential information in a distributed environment. A transaction is created including... |
| 6735693 |
Disk drive comprising encryption circuitry selectively enabled by verifying a circuit that provides plaintext data |
| May-11-2004 |
A disk drive comprising a disk for storing encrypted data is disclosed. The disk drive comprises a first circuit for providing plaintext data to a second circuit. The second circuit comprises controllable... |
| 6732277 |
Method and apparatus for dynamically accessing security credentials and related information |
| May-4-2004 |
A method and apparatus for dynamically accessing security credentials that are used to participate in a secure communication begins by obtaining virtual credentials of an entity, where the virtual credentials... |
| 6731755 |
Split-key cryptographic system and method |
| May-4-2004 |
A method of operating a split-key cryptographic system having two or more co-operating microprocessors, i, linked via a communications channel, involving the generation of a public modulus, N, being the... |
| 6724894 |
Cryptographic device having reduced vulnerability to side-channel attack and method of operating same |
| Apr-20-2004 |
A cryptographic device and method of operation for encrypting messages. The device can be incorporated into a postage metering system to provide cryptographically secured postal indicia. The device and... |
| 6715079 |
Method and system for soft modem protection |
| Mar-30-2004 |
The present invention is a system and method for soft modem software protection using a key. The key is stored in a hardware device in the modem subsystem and transmitted to the central processing unit... |
| 6714649 |
Pay broadcasting system with enhanced security against illegal access to a down loaded program in a subscriber terminal |
| Mar-30-2004 |
In a pay broadcasting system, data of a broadcast program is scrambled with a scramble key updated in a short period. The scramble key is encrypted with a first key assigned to the subscriber terminal.... |
| 6711264 |
Security improvement method and security system |
| Mar-23-2004 |
A security system prevents a commonly shared encryption key from being deciphered by an unwelcome party, while providing easier administration of encryption keys. The security system includes a memorizer... |
| 6711262 |
Procedure for the control of applications stored in a subscriber identity module |
| Mar-23-2004 |
A procedure for the control of applications stored in a user's subscriber identity module (SIM) in a data communication system that includes a data communication network, a terminal device connected to... |
| 6707926 |
Template for watermark decoder synchronization |
| Mar-16-2004 |
Systems and methods are provided through which a template in the spatial domain is generated and combined with an image. Later, the combined image can be decoded to determine the extent of scaling and... |
| 6707927 |
Steganographic system, method, program and storage medium therefor |
| Mar-16-2004 |
There is provided a steganographic system which can dispense with an original image during extraction of watermark by determining a position at which an optimum space dependent physical quantity is embedded... |
| 6701433 |
Method and apparatus for escrowing properties used for accessing executable modules |
| Mar-2-2004 |
An apparatus and method provide a controlled, dynamically loaded, modular, cryptographic implementation for integration of flexible policy implementations on policy engines, and the like, into a base executable... |
| 6701434 |
Efficient hybrid public key signature scheme |
| Mar-2-2004 |
Methods, apparatus and computer products provide solutions to the problem caused by the slow speed of public key signature algorithms. The solutions also solve problems of packet authentication for multicast... |
| 6701435 |
Cryptographic key generation system |
| Mar-2-2004 |
A method and a system for safely generating a cryptographic key that is separately provided to a plurality of servers. Through the collaboration of multiple users a cryptographic key is generated for the... |
| 6697489 |
Method and apparatus for securing control words |
| Feb-24-2004 |
In accordance with one embodiment, a method for securing control words is provided. The method includes receiving scrambled digital content in a descrambler integrated circuit. The method further includes... |
| 6694025 |
Method and apparatus for secure distribution of public/private key pairs |
| Feb-17-2004 |
A list of public/private key pairs are stored at a server, wherein the private key is stored in an encrypted form, the encryption being based on a master key. To distribute a public/private key pair to... |
| 6684334 |
Secure establishment of cryptographic keys using persistent key component |
| Jan-27-2004 |
An apparatus and method is disclosed for securely establishing a unique cryptographic key in a first cryptographic device, for example an Automated Teller Machine (ATM). In a preferred embodiment, the... |
| 6681017 |
Simplified secure shared key establishment and data delivery protocols for electronic commerce |
| Jan-20-2004 |
A number of protocols are disclosed for providing simplified security for a series of low-cost transactions carried out between a client and a server within an on-going client-server relationship. A key... |
| 6678821 |
Method and system for restricting access to the private key of a user in a public key infrastructure |
| Jan-13-2004 |
An encryption/decryption system for providing restricted use of each key in a plurality of keys to preserve confidentiality of the plurality of keys. Each key is usable by an associated user in a public... |
| 6678379 |
Quantum key distribution method and apparatus |
| Jan-13-2004 |
A method for testing the reliability of a quantum key distribution apparatus is provided. The method includes the steps of: producing a set of quanta by the sender, the set of quanta comprising first,... |
| 6675297 |
Method and apparatus for generating and using a tamper-resistant encryption key |
| Jan-6-2004 |
The present invention increases the difficulty of reverse engineering sensitive information protected by an encryption algorithm by increasing the difficulty associated with tracing the code that generates... |
| 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... |
| 6668321 |
Verification of identity of participant in electronic communication |
| Dec-23-2003 |
Verifying and authenticating the identity of participants in electronic communication. A primary key generated from a master key is stored at a sending device and a recipient device. Based on the primary... |
| 6658114 |
Key management method |
| Dec-2-2003 |
A key management method to prevent illegal eavesdropping in a network system. Keys of the network system are divided into several family subkeys and several communication subkeys. A plurality of trusted-key... |
| 6654887 |
Steganography decoding methods employing error information |
| Nov-25-2003 |
Media content, such as imagery (including video) and audio, can be encoded to convey hidden information (steganographic encoding) for a variety of purposes, including communication of auxiliary information... |
| 6654888 |
Installing and controlling trial software |
| Nov-25-2003 |
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... |
| 6651166 |
Sender driven certification enrollment system |
| Nov-18-2003 |
A sender driven certificate enrollment system and methods of its use are provided, in which a sender controls the generation of a digital certificate that is used to encrypt and send a document to a recipient... |
| 6650753 |
System for encrypting broadcast programs in the presence of compromised receiver devices |
| Nov-18-2003 |
A digital broadcast system provides secure transmission of digital programs to in-home digital devices even when some of the devices are unauthorized. A matrix of device keys S.sub.j,i is provided, wherein... |
| 6631471 |
Information processing equipment |
| Oct-7-2003 |
A relation between the data process contents in an IC card chip and the consumption current of the IC card chip is reduced. Prior to executing an input data process of the IC card chip, the input data... |
| 6625734 |
Controlling and tracking access to disseminated information |
| Sep-23-2003 |
A method for controlling and tracking access to disseminated information involves encrypting data using a key that is maintained in a key repository. A user requests a message ID and key from the key repository.... |
| 6614909 |
Methods, systems, and circuits for generating keys for public key cryptosystems using parallel processing for modular operations of IC cards |
| Sep-2-2003 |
Modular operations are used to perform encryption/decryption of keys in a public cryptosystem. The modular operations process a first data in parallel with a second data to provide for the processing of... |
| 6606387 |
Secure establishment of cryptographic keys |
| Aug-12-2003 |
A system and method are disclosed for securely establishing a cryptographic key between a first cryptographic device, for example a host cryptographic security module, and a second cryptographic device,... |
| 6594759 |
Authorization firmware for conducting transactions with an electronic transaction system and methods therefor |
| Jul-15-2003 |
A computer configured to authenticate a user to an electronic transaction system is disclosed. The computer includes a central processing unit and electronic authorization firmware disposed within the... |
| 6591420 |
Remote control system for audio and video content |
| Jul-8-2003 |
A program distribution system is disclosed for the simultaneous release of a program at a plurality of locations. The locations may include local broadcasters, or even individual devices. A program is... |
| 6590981 |
System and method for secure cryptographic communications |
| Jul-8-2003 |
An apparatus and method for secure cryptographic communications between a sender and a receiver or multiple receivers that includes first and second timing elements, and first and second key storage units... |
| 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... |
| 6581162 |
Method for securely creating, storing and using encryption keys in a computer system |
| Jun-17-2003 |
A secure environment for entering and storing information necessary to conduct encryption processes. In a computer system according to the invention, session keys, passwords, and encryption algorithms... |
| 6580806 |
Image processing apparatus, image processing method and storage |
| Jun-17-2003 |
An image processing apparatus which can conveniently perform editing processing of image information based on template information and storage and output of the processing result is provided. In the apparatus,... |
| 6577734 |
Data encryption key management system |
| Jun-10-2003 |
The secure management of encryption keys is obtained by preventing external access thereto and ensuring that the keys do not leave an encryption unit in their original form. This result is obtained via... |
| 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... |
| 6560338 |
Limiting delays associated with the generation of encryption stream ciphers |
| May-6-2003 |
A method and an apparatus for generating encryption stream ciphers are based on a recurrence relation designed to operate over finite fields larger than GF(2). A non-linear output can be obtained by using... |
| 6560337 |
Systems, methods and computer program products for reducing effective key length of ciphers using one-way cryptographic functions and an initial key |
| May-6-2003 |
Systems, methods and computer program products reduce effective key length of a symmetric key cipher by deriving an intermediate value from an initial key, using a one-way cryptographic function. Predetermined... |
