| 6782103 |
Cryptographic key management |
| Aug-24-2004 |
Business data flows from one computer system (1) to another (2) and its integrity can be protected by cryptographic means, such as digital signatures. In particular, a source system (1) may use a private... |
| 6993136 |
Cryptographic key exchange method using efficient elliptic curve |
| Jan-31-2006 |
A method of exchanging a cryptographic key between two users that includes the steps of selecting a value p from p=(2dk-2ck-1)/r, p=(2dk-2(d-1)k+2(d-2)k-... |
| 6895092 |
Cryptographic key distribution method and apparatus thereof |
| May-17-2005 |
A cryptographic key distribution method, in which coherent light being suitable for optical fiber communication network is used and high security is secured, is provided. A sending end encodes random numbers... |
| 6684330 |
Cryptographic information and flow control |
| Jan-27-2004 |
A method of providing cryptographic information and flow control includes first determining a target domain from an IP address. An organization policy is looked up from a credential store, and an algorithm... |
| 5953419 |
Cryptographic file labeling system for supporting secured access by multiple users |
| Sep-14-1999 |
A system is disclosed for automatically distributing secured versions (*Sys.sub.-- D.sub.-- key*) of a file decryption key (Sys.sub.-- D.sub.-- key) to a plurality of file users by way of the file's security... |
| 7010127 |
Cryptographic communication method, file access system and recording medium |
| Mar-7-2006 |
A cryptographic communication method is provided in which a cryptographic communication is performed by an easy operation even if both enciphered data and unenciphered data are mixed to be handled. In... |
| 6097816 |
Crypt key system |
| Aug-1-2000 |
A crypt key system for decrypting encrypted data for use, by a permit key including a decryption key, comprising a database/charging center, a broadcasting station, a receiving device and a communication... |
| 6367019 |
Copy security for portable music players |
| Apr-2-2002 |
Data such as a musical track is stored as a secure portable track (SPT) which can be bound to one or more players and can be bound to a particular storage medium, restricting playback of the SPT to the... |
| 6028932 |
Copy prevention method and apparatus for digital video system |
| Feb-22-2000 |
A copy prevention method and apparatus for a digital video system is disclosed including the steps of: (a) adding a header area of a header start code and key field to a reproduced bit stream; (b) decrypting... |
| 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.... |
| 6834346 |
Content processing system |
| Dec-21-2004 |
A first information processing unit 100 stores identification information into a storage module 152, stores an encrypted contents signal into a mass storage unit 180, and supplies the encrypted contents... |
| 6618807 |
Computer system with an external and portable electronic key for encryption and decryption processes |
| Sep-9-2003 |
The present invention provides a computer system comprising a system memory, a processor, a cryptoprogram, an I/O port, and an electronic key. The electronic key can be inserted into and removed from the... |
| 6661896 |
Computer network security system and method |
| Dec-9-2003 |
A method and system for maintaining computer network security allows for changeable encryption keys used by each individual work station to be looked up by a server. The server will have numerous logical... |
| 6144739 |
Computer network protection using cryptographic sealing software agents and objects |
| Nov-7-2000 |
A method and apparatus for protecting software objects from external modification is described. A cryptographic seal protects the object at the object level and also supports secure inter-object communication.... |
| 5526435 |
Communications apparatus for scrambling data and synchronizing a plurality of terminals |
| Jun-11-1996 |
The invention prevents unauthorized use of data in communications. When terminals with different data transmission rates are simultaneously connected to a host computer, the host computer sets a single... |
| 5323464 |
Commercial data masking |
| Jun-21-1994 |
A method and system are disclosed for the implementation of a weakened privacy channel. This is achieved through use of a weakened symmetric cryptographic algorithm called commercial data masking. The... |
| 5293576 |
Command authentication process |
| Mar-8-1994 |
A slave station, such as an orbiting satellite, and a master station, such as a ground control station, have their own lists of random pads. The master and slave station lists are identical. When the master... |
| 5970149 |
Combined remote access and security system |
| Oct-19-1999 |
A combined remote access and security system for servicing a secure mainframe central processing unit having a console monitor. A secure dispatch central processing unit for receiving problem reports concerning... |
| 6021203 |
Coercion resistant one-time-pad cryptosystem that facilitates transmission of messages having different levels of security |
| Feb-1-2000 |
A protocol is provided for transmitting low security messages and high security messages with one-time-pad cryptosystem. In one implementation of the present invention, low security messages are encrypted... |
| 7039191 |
Chaining key broadcasting reception system and chaining key broadcasting reception method |
| May-2-2006 |
In the chaining key broadcasting reception system, a chaining key reception unit receives a chaining key, an identifier of the key in question and a target key identifier indicative of a chaining key to... |
| 6650754 |
Broadcast reception device and contract management device using common master key in conditional access broadcast system |
| Nov-18-2003 |
A conditional access broadcast system for realizing conditional access while maintaining the safety level is disclosed. A contract management device at a broadcast station side delivers a reception contract... |
| 6463155 |
Broadcast reception device and contract management device using common master key in conditional access broadcast system |
| Oct-8-2002 |
A conditional access broadcast system for realizing conditional access while maintaining the safety level is disclosed. A contract management device at a broadcast station side delivers a reception contract... |
| 5592552 |
Broadcast encryption |
| Jan-7-1997 |
A selective broadcasting method operative to transmit a plurality of message data signals to a corresponding plurality of subscriber subsets within a set of subscribers, the method comprising receiving... |
| 6438233 |
Book data service system with data delivery by broadcasting |
| Aug-20-2002 |
A book data service system in which the book data can be delivered by the broadcasting such that the book data can be delivered to any user located at any place promptly and economically, without causing... |
| 5995630 |
Biometric input with encryption |
| Nov-30-1999 |
A fingerprint sensing system for providing data in dependence upon fingerprint information to a computer is disclosed. The system comprises an imaging device for capturing a fingerprint image. The fingerprint... |
| 6697490 |
Automatic resynchronization of crypto-sync information |
| Feb-24-2004 |
An apparatus and method for transmitting and receiving cryptographic information which provide a mechanism for resynchronization between a transmitter and receiver of the cryptographic information. A cryptographic... |
| 6928420 |
Automated transaction apparatus |
| Aug-9-2005 |
An automated transaction apparatus capable of connecting to both a private line and a commercial line. Therefore, by using a private line to communicate data requiring high security, it is possible to... |
| 6188768 |
Autocompensating quantum cryptographic key distribution system based on polarization splitting of light |
| Feb-13-2001 |
A quantum cryptographic key distribution (QKD) system splits discrete light signals from a laser source into a pair of light pulses that are orthogonally polarized with respect to each other, imparts a... |
| 6122742 |
Auto-recoverable and auto-certifiable cryptosystem with unescrowed signing keys |
| Sep-19-2000 |
A method is provided for an escrow cryptosystem combined with an unescrowed digital signature scheme that uses a single public key per user. This system is overhead-free, does not require a cryptographic... |
| 6493825 |
Authentication of a host processor requesting service in a data processing network |
| Dec-10-2002 |
An object is authenticated by transmitting a random number to the object. The object has an integrated circuit chip including a memory and encryption circuitry. The memory stores information defining an... |
| 6971016 |
Authenticated access to storage area network |
| Nov-29-2005 |
A method and system for authenticating access to a storage area network (SAN) is disclosed in which a password is retrieved from a first copy of a password table in response to an access (login) request,... |
| 6430688 |
Architecture for web-based on-line-off-line digital certificate authority |
| Aug-6-2002 |
A method, apparatus, article of manufacture, and a memory structure for issuing digital certificates to a client is disclosed. The method comprises the steps of accepting a digital certificate request... |
| 6032258 |
Apparatus and methods for transmission security in a computer network |
| Feb-29-2000 |
A method for validating a message packet communicated from a source node to a destination node in a computer network is disclosed. The source node and destination node have access to a clock mechanism... |
| 6567914 |
Apparatus and method for reducing transmission bandwidth and storage requirements in a cryptographic security system |
| May-20-2003 |
An apparatus and methods for facilitating a reduction in data transmission bandwidth removes unnecessary data relating to encryption keys prior to sending a message or storing the encrypted information... |
| 5210794 |
Apparatus and method for establishing crypto conferences on a telecommunications network |
| May-11-1993 |
A method to establish a speech conference connection between a group of conference participating nodes (2,4,8) which can freely be selected among a greater plurality of nodes (2-9) having conference facilities,... |
| 6094487 |
Apparatus and method for encryption key generation |
| Jul-25-2000 |
An encryption key generation system generates encryption keys at both an originating terminal and a terminating terminal of a wireless network. A central controller generates a shared secret based on the... |
| 4688250 |
Apparatus and method for effecting a key change via a cryptographically protected link |
| Aug-18-1987 |
Messages sent from an earth station to a satellite by a command link are authenticated within the satellite before being executed. Authentication is accomplished by comparing a codeword appended to the... |
| 6151676 |
Administration and utilization of secret fresh random numbers in a networked environment |
| Nov-21-2000 |
In a public key cryptosystem employing the El-Gamal algorithm, secret fresh random numbers are generated at a server and private keys of users, as encrypted with a symmetric algorithm by using individual... |
| 6351813 |
Access control/crypto system |
| Feb-26-2002 |
An access control/crypto system having a smart card reader and an access control program for requesting information from a user to determine if the user is authorized to access the computer. The access... |
| 6782100 |
Accelerated finite field operations on an elliptic curve |
| Aug-24-2004 |
A method for multiplication of a point P on elliptic curve E by a value k in order to derive a point kP comprises the steps of representing the number k as vector of binary digits stored in a register... |
| 6950940 |
ABDS method utilizing security information in authenticating entity access |
| Sep-27-2005 |
Authenticating an entity for access to a controlled resource by an access authentication component for the controlled resource includes the steps of: the requesting entity initially opening a security... |
