| 6118873 |
System for encrypting broadcast programs in the presence of compromised receiver devices |
| Sep-12-2000 |
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... |
| 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... |
| 6108644 |
System and method for electronic transactions |
| Aug-22-2000 |
A system and method for performing an electronic transaction, including registration, audit and trusted recovery features. A transaction request message is received from a registered user that includes... |
| 6108425 |
Method and apparatus for controlling the configuration of a cryptographic processor |
| Aug-22-2000 |
The capabilities of a cryptographic module are controlled by a crypto configuration control (CCC) register that is initialized by one or more self-signed commands that are preformulated and signed with... |
| 6108424 |
Mobile radio telephone station comprising a protection system for at least one authentication number and method of protecting an authentication number |
| Aug-22-2000 |
The mobile station comprises Traffic Identification Encryption means (TIE) and a memory (54) for storing at least one authentication number (A-key). According to the invention, the protection system comprises... |
| 6105012 |
Security system and method for financial institution server and client web browser |
| Aug-15-2000 |
The financial transaction processing system includes at least one financial server connected through a public network to a number of users associated with client computers. Each user accesses the financial... |
| 6101255 |
Programmable cryptographic processing system and method |
| Aug-8-2000 |
A programmable crypto processing system (10) includes several processing resources (14, 16, 26) implemented on a single ULSI die. The processing system is both key and algorithm agile allowing for simultaneous... |
| 6088454 |
Key management method, encryption system, and sharing digital signature system which have hierarchies |
| Jul-11-2000 |
A key management method, an encryption system, and a sharing digital signature system are provided, which are designed to hierarchically manage the degrees of contribution of members to a digital signature... |
| 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... |
| 6079021 |
Method and apparatus for strengthening passwords for protection of computer systems |
| Jun-20-2000 |
A computer implemented method provides access to processes and data using strengthened password. During an initialization phase, an access code is stored in a memory of a computer system. The access code... |
| 6078664 |
Z-transform implementation of digital watermarks |
| Jun-20-2000 |
Z-transform calculations may be used to encode (and/or decode) carrier signal independent data (e.g., digital watermarks) to a digital sample stream. Deterministic and non-deterministic components of a... |
| 6075862 |
Decryption key management scheme for software distribution system |
| Jun-13-2000 |
A decryption key management scheme for a software distribution system utilizing the decryption key, which can enable the re-install of the software that was decrypted once by a proper procedure, without... |
| 6069647 |
Conditional access and content security method |
| May-30-2000 |
A system featuring an interface unit connected to a programmable unit is described. The interface unit is capable of containing a time-sensitive key. The programmable unit is allowed to receive digital... |
| 6061656 |
Computer-based trading card system and method |
| May-9-2000 |
A collection system using a computer or smart device system wherein the collection items (or more specifically their unlocking keys) are contained in various floppy disks and/or an optical storage drive... |
| 6061454 |
System, method, and computer program for communicating a key recovery block to enable third party monitoring without modification to the intended receiver |
| May-9-2000 |
A method is disclosed for communicating a key recovery block from a sender to a non-enabled receiver, without the danger of throwing the receiver into an indeterminant state, and without modifying the... |
| 6061448 |
Method and system for dynamic server document encryption |
| May-9-2000 |
A method and system are provided for secure document delivery over a wide area network, such as the Internet. A sender directs a Delivery Server to retrieve an intended recipient's public key. The Delivery... |
| 6058193 |
System and method of verifying cryptographic postage evidencing using a fixed key set |
| May-2-2000 |
A method for controlling keys used in the verification of encoded information generated by a transaction evidencing device and printed on a document comprises the steps of generating a plurality of random... |
| 6058187 |
Secure telecommunications data transmission |
| May-2-2000 |
Secure data transmission apparatus comprises a data translator for translating an input string of signals, each signal having incomplete information for identifying an alphanumeric character, into a first... |
| 6055638 |
Process and authentication device for secured authentication between two terminals |
| Apr-25-2000 |
Process and device for secured authentication of the transmission of data between two terminals includes a secured authentication process for the communication between a user's station and a server station,... |
| 6049878 |
Efficient, secure multicasting with global knowledge |
| Apr-11-2000 |
A system for secure multicast including at least one sending entity operating on a sending computer system, the sending entity with a sending multicast application running on the sending computer system.... |
| 6049838 |
Persistent distributed capabilities |
| Apr-11-2000 |
A system and method is disclosed that provides persistent capabilities for distributed, object-oriented applications running on generally available hardware. The disclosed system and method operate in... |
| 6047242 |
Computer system for protecting software and a method for protecting software |
| Apr-4-2000 |
A method for protecting an item of software, wherein at least one first challenge means is associated with said protected item of software, and at least one first response means accesses one private keying... |
| 6044349 |
Secure and convenient information storage and retrieval method and apparatus |
| Mar-28-2000 |
A portable storage medium is used to store data and provide access to information from an information dissemination system (IDS). The storage medium can store one or more location/key pairs. Each of the... |
| 6044155 |
Method and system for securely archiving core data secrets |
| Mar-28-2000 |
The invention provides central storage for core data secrets, referred to as data items. The data items are encrypted by a client computer using a client key that is derived from a logon secret, such as... |
| 6044154 |
Remote generated, device identifier key for use with a dual-key reflexive encryption security system |
| Mar-28-2000 |
A security system is disclosed, which system is for granting access to a host computer in response to a demand from a remote computer. The security system has a permanent encryption key mounted on the... |
| 6026165 |
Secure communications in a wireless system |
| Feb-15-2000 |
Disclosed are three major aspects relating to wireless transmission of encrypted data messages in a security system wherein the receiver stores locally an encryption key utilized by the transmitting device... |
| 6023689 |
Method for secure communication in a telecommunications system |
| Feb-8-2000 |
A method for sending a secure message in a telecommunications system utilizing public encryption keys. All authentication parameters of each of the users, including each user's decryption key that is known... |
| 6014745 |
Protection for customer programs (EPROM) |
| Jan-11-2000 |
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... |
| 6014443 |
Semiconductor memory device having copy protect function and method for accessing the same |
| Jan-11-2000 |
Cryptographic key data and data subjected to an operation by use of the cryptographic key data are previously stored in a memory cell array. A memory cell in which the cryptographic key data is stored... |
| 6014444 |
Apparatus for encrypted communication |
| Jan-11-2000 |
An apparatus for encrypted communication in which transmission data is encrypted based upon a cipher key and is transmitted. The received encrypted data is decrypted based upon a cipher key. A cipher key... |
| 6014442 |
Decrypting method and electronic device |
| Jan-11-2000 |
PID information and TSC information are extracted from a header of received data inputted to a terminal 1 and are supplied to an IDT (16). The IDT (16) receives these information and searches a data key... |
| 6011847 |
Cryptographic access and labeling system |
| Jan-4-2000 |
An integrated, modular computer program system provides for the encryption and decryption of files utilizing conventional encryption algorithms and a relational key generated by the system. The computer... |
| 6009174 |
Secret key transfer method which is highly secure and can restrict the damage caused when the secret key is leaked or decoded |
| Dec-28-1999 |
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... |
| 6005942 |
System and method for a multi-application smart card which can facilitate a post-issuance download of an application onto the smart card |
| Dec-21-1999 |
A system and method allow card issuers to securely add applications during the lifetime of the card after the card has already been issued (post issuance). Loading of an application and/or objects from... |
| 5999622 |
Method and apparatus for protecting widely distributed digital information |
| Dec-7-1999 |
To facilitate protected distribution of digital data files, the files are segmented, and each segment (e.g. disk sector) is encrypted separately. Some segments can be left unencrypted, speeding access... |
| 5995623 |
Information processing apparatus with a software protecting function |
| Nov-30-1999 |
The present invention provides an information processing apparatus which comprises separating means for separating inputted data into identification data and data to be encrypted, determination means for... |
| 5963646 |
Secure deterministic encryption key generator system and method |
| Oct-5-1999 |
An encryption key generator is disclosed which is highly resistant to cryptographic analysis or brute force attacks, and which accommodates the destruction of an encryption key after each use by providing... |
| 5956402 |
Passwordless secure and efficient remote data update |
| Sep-21-1999 |
Secure communication is effected when computers A and B that are interconnected by an insecure medium employ a dataset that is known to both and that is otherwise used within one or other of the computers... |
| 5940507 |
Secure file archive through encryption key management |
| Aug-17-1999 |
A information processing system providing archive/backup support with privacy assurances by encrypting data stored thereby. Data generated on a source system is encrypted, the key used thereby is separately... |
| 5933854 |
Data security system for transmitting and receiving data between a memory card and a computer using a public key cryptosystem |
| Aug-3-1999 |
In a system wherein a memory card is connected to a computer, data stored in a memory device in the memory card is read by a processor provided in the computer. An address signal and a data signal from... |
| 5930362 |
Generation of encryption key |
| Jul-27-1999 |
A set of Diffie-Hellman data encryption values is generated prior to receiving a request for the data encryption values. The data encryption values are then stored in a database. The generating and storing... |
| 5917911 |
Method and system for hierarchical key access and recovery |
| Jun-29-1999 |
A key management system includes a hierarchy (10) of independent key arbitration centers (KAC) for providing access to a user's session keys through key management centers (KMC). When a court order is... |
| 5907618 |
Method and apparatus for verifiably providing key recovery information in a cryptographic system |
| May-25-1999 |
A method and apparatus for verifiably providing key recovery information to one or more trustees in a cryptographic communication system having a sender and a receiver Each communicating party has its... |
| 5905799 |
Programmed computer for identity verification, forming joint signatures and session key agreement in an RSA public cryptosystem |
| May-18-1999 |
An article of manufacture for improving an RSA cryptosystem, includes computer readable storage medium with computer programming stored thereon. The stored computer programming is configured to be readable... |
| 5892825 |
Method of secure server control of local media via a trigger through a network for instant local access of encrypted data on local media |
| Apr-6-1999 |
A method of triggering video imaging and/or audio data on a "HyperCD" (CD-ROM) via a trigger through a network for instant local access of encrypted data on local media. The CD-ROM contains video/audio... |
| 5878136 |
Encryption key control system for mail processing system having data center verification |
| Mar-2-1999 |
A key control system comprises the generation of a first set of keys which are then used for a plurality of respective postage meters. The keys are then related to a respective meter in accordance with... |
| 5870477 |
Enciphering/deciphering device and method, and encryption/decryption communication system |
| Feb-9-1999 |
A plaintext file 41 is enciphered using a file key 44, to generate ciphertext 42. The file key 44 is enciphered using a secret key 47 and a management key 48, respectively, to form an enciphered key 1... |
| 5862221 |
Scramble wireless communication system |
| Jan-19-1999 |
As for wireless communication lines between a master station and a plurality of remote stations, each remote station has a function F having an unitary variable which is known over all the stations and... |
| 5857022 |
Enhanced cryptographic system and method with key escrow feature |
| Jan-5-1999 |
The invention provides a cryptographic system and method with a key escrow feature that uses a method for verifiably splitting users' private encryption keys into components and for sending those components... |
| 5850443 |
Key management system for mixed-trust environments |
| Dec-15-1998 |
The invention allows for transporting, in different degrees of security strength, a symmetric key encrypted using an asymmetric encryption technique, and along with this transporting ciphertext derived... |
