| 6405319 |
Verification system for information transfers over a computer network |
| Jun-11-2002 |
A system for validating network communication, such as e-mail. A person sending information to a previously unverified recipient first enters "Address Book" information about the unverified recipient into... |
| 6397307 |
Method and system for mirroring and archiving mass storage |
| May-28-2002 |
A method and system for mirroring and archiving mass storage. A primary mass storage and a secondary mass storage are synchronized to contain the same data. Thereafter, a primary system tracks changes... |
| 6396928 |
Digital message encryption and authentication |
| May-28-2002 |
A method and system for performing digital message encryption and signature encoding for use in, for example, communications and digital information storage systems, For secure communication of digital... |
| 6393128 |
System for broadcasting data signals in a secure manner |
| May-21-2002 |
A system for broadcasting data signals in a secure manner comprises means for encrypting the data signals using a first key, means for broadcasting the encrypted data signals to subscribers, means for... |
| 6393127 |
Method for transferring an encryption key |
| May-21-2002 |
Encryption keys are transferred by obtaining a public and private key pair (42, 65) from a source device (21, 61). The public key is transmitted (42, 65) from the source device (43, 66) to a target device... |
| 6370249 |
Method and apparatus for public key management |
| Apr-9-2002 |
A method and apparatus for public key management is accomplished when an associated authority provides, from time to time, a public key of at least one of a plurality of certificate authorities to a client.... |
| 6363210 |
Communication system for encrypted data and apparatus for selectively recording and reproducing received analog signal and received digital signal |
| Mar-26-2002 |
A communication system has an analog signal broadcasting station for transmitting an analog signal, a digital signal broadcasting station for transmitting a digital signal and a receiving unit for receiving... |
| 6363154 |
Decentralized systems methods and computer program products for sending secure messages among a group of nodes |
| Mar-26-2002 |
Secure messages are sent among a group of nodes selected from a plurality of nodes that are connected to a communications network, by defining a random secret key at a first one of the group of nodes.... |
| 6360152 |
Vehicle-control communication system |
| Mar-19-2002 |
A vehicle-control communication system, in which a plurality of control function units such as ECI (engine control) are separated into an I/O processing function and an operation control function, and... |
| 6357005 |
System for the secure CD-ROM storage of data |
| Mar-12-2002 |
A system for securely storing CD-ROM data including a CD-ROM having data encrypted at least in part with a cryptographic algorithm having a decryption key K, a CD-ROM drive for receiving the CD-ROM, an... |
| 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... |
| 6351814 |
Field programmable gate array with program encryption |
| Feb-26-2002 |
A field programmable gate array (FPGA) and a decryption circuit are implemented within a common integrated circuit (IC) or within separate ICs enclosed within a common IC package. The decryption circuit... |
| 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... |
| 6337911 |
Deferred billing, broadcast, electronic document distribution system and method |
| Jan-8-2002 |
An electronic document delivery system and method in which a broadcast center periodically sends a "catalog" of available documents to a receiving computer, thereby allowing a user to browse through the... |
| 6334188 |
Method and apparatus for limiting access to network elements |
| Dec-25-2001 |
A method and apparatus limit access to network elements. A network authentication key server generates a current key and transmits it to a plurality of network authentication nodes, each node being associated... |
| 6298137 |
Ring-based public key cryptosystem method |
| Oct-2-2001 |
A method of communicating information between users of a communications system includes the following steps: generating a ring R, ideals P and Q in R, a set of coset representatives C.sub.Q for the ring... |
| 6289104 |
Free-space quantum cryptography system |
| Sep-11-2001 |
A system and method for quantum key delivery in a single-photon, free-space cryptography scheme including a transmitter and a receiver. The transmitter includes two pairs of photon sources, each of which... |
| 6282651 |
Security system protecting data with an encryption key |
| Aug-28-2001 |
Proprietary information such as programs and/or data are protected using a secure processing system that includes a memory such as an EPROM in which the proprietary information is stored in a first portion... |
| 6272224 |
Method and apparatus for quantum distribution of an encryption key |
| Aug-7-2001 |
Process and device for quantum distribution of an encryption key. According to the invention, a light beam is modulated by a signal, the phase of which can be adjusted at random. On reception, the received... |
| 6263437 |
Method and apparatus for conducting crypto-ignition processes between thin client devices and server devices over data networks |
| Jul-17-2001 |
A crypto-ignition process is needed to establish an encrypted communication protocol between two devices connected by an insecure communication link. The present invention introduces a method of creating... |
| 6249867 |
Method for transferring sensitive information using initially unsecured communication |
| Jun-19-2001 |
In the method for transferring sensitive information using unsecured communication, a first party receives a public key of a second party, produces an encryption result by performing keyed encryption on... |
| 6243811 |
Method for updating secret shared data in a wireless communication system |
| Jun-5-2001 |
In the method for updating secret shared data (SSD) in a wireless communication system, a first party outputs a first random number as a first challenge wherein the first party is one of a network and... |
| 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... |
| 6226385 |
Encryption communication system capable of reducing network managing workload |
| May-1-2001 |
In an encryption communication system, an encrypt key ID of an encrypt apparatus appearing on a communication path between terminals is acquired by using a key seek packet, and an encrypt key ID is automatically... |
| 6212633 |
Secure data communication over a memory-mapped serial communications interface utilizing a distributed firewall |
| Apr-3-2001 |
A distributed firewall is utilized in conjunction with a memory-mapped serial communications interface such as that defined by the IEEE 1394 specification to permit secure data transmission between selected... |
| 6212281 |
Digital signature protocol |
| Apr-3-2001 |
A digital signature protocol generates a signature component using a hash of an encrypted message. The component and encrypted message form a signature pair that is forwarded to a recipient. The encryption... |
| 6209099 |
Secure data processing method and system |
| Mar-27-2001 |
The present invention concerns a secure data processing method and system in which the user or operator of the system can trust that all of the software and hardware components of the system have been... |
| 6205549 |
Encapsulation of public key cryptography standard number 7 into a secured document |
| Mar-20-2001 |
A secured access to data in a portable document format (PDF) file is provided by encapsulating a Public Key Cryptography Standard number 7 (PKCS#7) object having a recipient list into data. `Enveloped... |
| 6199161 |
Management of authentication keys in a mobile communication system |
| Mar-6-2001 |
A method and mobile communication system for managing authentication keys, the system having at least one authentication center, base stations and mobile stations to which subscriber identity modules may... |
| 6192473 |
System and method for mutual authentication and secure communications between a postage security device and a meter server |
| Feb-20-2001 |
A method is provided for establishing mutual authentication and secure communications between an microprocessor-based transaction evidencing device and a microprocessor-based server coupled thereto. A... |
| 6192474 |
Method for establishing a key using over-the-air communication and password protocol and password protocol |
| Feb-20-2001 |
In the password protocol, the communicating parties exchange calculation results, which each include an exponential, to generate a key. In generating the calculation results, each party adds the password... |
| 6192131 |
Enabling business transactions in computer networks |
| Feb-20-2001 |
A system for creating a log of a conversation includes a convener computer and a plurality of conversation computers interconnected by a computer network. The system includes an arbiter computer and a... |
| 6178507 |
Data card verification system |
| Jan-23-2001 |
A method for verifying the authenticity of messages exchanged between a pair of correspondents in an electronic conducted over a data transmission system where the correspondents each include respective... |
| 6178244 |
Cryptosystem |
| Jan-23-2001 |
In a cryptosystem, communication terminals and encryptors can be grouped physically and logically. The communication mode can be switched by the encryptor between ciphertext communication and plaintext... |
| 6175921 |
Tamper-proof devices for unique identification |
| Jan-16-2001 |
A system for open electronic commerce having a customer trusted agent securely communicating with a first money module, and a merchant trusted agent securely communicating with a second money module. Both... |
| 6175922 |
Electronic transaction systems and methods therefor |
| Jan-16-2001 |
A method and apparatus is disclosed for approving a transaction request between an electronic transaction system and a portable electronic authorization device (PEAD) carried by a user using an electronic... |
| 6173403 |
Method and apparatus for distributing information products |
| Jan-9-2001 |
A method and apparatus for distributing information products is described that comprises: receiving an encrypted launch code; decrypting the encrypted launch code with a string, R, as the key to recover... |
| 6173400 |
Methods and systems for establishing a shared secret using an authentication token |
| Jan-9-2001 |
A method and system for establishing a shared secret between a plurality of devices using an authentication token. An authentication token is used to establish a shared secret between a local device and... |
| 6161183 |
Data verifying method apparatus for creating data to be verified and data verifying apparatus |
| Dec-12-2000 |
A token 12 creates utilization history information and sends the information to an information processing unit 11 and simultaneously creates an verification value and stores the value in a utilization-value... |
| 6160890 |
Secret key transfer method which is highly secure and can restrict the damage caused when the secret key is leaked or decoded |
| Dec-12-2000 |
A transmission apparatus 100 includes a secret key storage unit 103 that stores three secret keys K1, K2 and K3, a secret key selection unit 104 that selects one secret key Ks from the secret keys, a message... |
| 6157722 |
Encryption key management system and method |
| Dec-5-2000 |
The invention relates to an encryption key management system and method of securely communicating data. First and second communicating devices are provided with a first and second identical sequences or... |
| 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... |
| 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... |
| 6137885 |
Method for enabling direct encrypted communication between two terminals of a mobile radio network, and corresponding station and terminal facilities |
| Oct-24-2000 |
A method for enabling encrypted communication to be performed directly in a single hop or merely directly between two terminals of a mobile radio network by satellite and/or of the GSM/DCS type, after... |
| 6128391 |
Method and apparatus for asymetric key management in a cryptographic system |
| Oct-3-2000 |
A method and apparatus for asymmetrical key management in a cryptographic system is provided. Embodiments of the invention implement varying levels of diversification to manage the encryption keys. In... |
| 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... |
| 6119227 |
Methods and apparatus for authenticating an originator of a message |
| Sep-12-2000 |
Authentication by an intermediary F (e.g. a bank) of an originator C of a message (e.g. a client sending an instruction to pay a merchant M) is accomplished using a protocol which does not require the... |
| 6115816 |
Optimized security functionality in an electronic system |
| Sep-5-2000 |
An electronic system with security functionality that optimizes performance of the electronic system during cryptographic operations. In one embodiment, the electronic system includes a chipset having... |
| 6115699 |
System for mediating delivery of a document between two network sites |
| Sep-5-2000 |
A system for mediating delivery of a document from a sending site to a receiving site utilizes respective sending and receiving agents as intermediaries. The document is encrypted by the sending site to... |
| 6111956 |
Method for secure key distribution over a nonsecure communications network |
| Aug-29-2000 |
In response to an inquiry by an unsophisticated Subscriber over a nonsecure network, a Provider returns a public key and retains the corresponding private key. The Subscriber encrypts a password using... |
