| 6266416 |
Protection of software against use without permit |
| Jul-24-2001 |
An arrangement to protect software, particularly freely distributed application software, against utilization without permission of the copyright holder. By encrypting the software employing a key (k1)... |
| 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... |
| 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... |
| 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... |
| 4228321 |
Privacy transmission system with remote key control |
| Oct-14-1980 |
In the prior art key control signals are produced at a scrambling location, used at that location for scrambling and then transmitted along with the scrambled message to the unscrambling location. In accordance... |
| 6925183 |
Preventing shortened lifetimes of security keys in a wireless communications security system |
| Aug-2-2005 |
23A wireless communications device has a first security key, a second security key, and established channels. Each established channel has a corresponding security count value, and utilizes a security... |
| 6473743 |
Postage meter having delayed generation of cryptographic security parameters |
| Oct-29-2002 |
A method for using cryptographic parameters in a postage meter for securing postage indicium data includes the steps of generating in the postage meter 1) first cryptographic parameters which are useable... |
| 6779115 |
Portable device using a smart card to receive and decrypt digital data |
| Aug-17-2004 |
A system and method for securely downloading digital music data includes a portable handheld device having a detachable smart card for decrypting encrypted music as it is played thereby allowing the portable... |
| 6324287 |
Pad encryption method and software |
| Nov-27-2001 |
A pad encryption software architecture includes space on a floppy for storing the pad to be used with the encryption software. The pad is XOR generated with random numbers subject to redetermined offsets.... |
| 5799090 |
pad encryption method and software |
| Aug-25-1998 |
A pad encryption software architecture includes space on a floppy for storing the pad to be used with the encryption software. The pad is XOR generated with random numbers subject to redetermined offsets.... |
| 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... |
| 6083667 |
Optical recording medium |
| Jul-4-2000 |
An optical recording medium includes a transparent substrate having a surface formed with a track of pits. A reflecting layer extends on the surface of the transparent substrate. The pits include first-type... |
| 6987855 |
Operational optimization of a shared secret Diffie-Hellman key exchange among broadcast or multicast groups |
| Jan-17-2006 |
An optimized approach for arriving at a shared secret key in a multicast or broadcast group environment is disclosed. The key exchange method is mathematically equivalent to the standard broadcast version... |
| 6134631 |
Non-volatile memory with embedded programmable controller |
| Oct-17-2000 |
Computer systems may be provided with additional performance for demanding applications while adding little additional hardware. For example, a slave device for a host computer system combines an embedded... |
| 6690795 |
Multiple keys for decrypting data in restricted-access television system |
| Feb-10-2004 |
An encryption system for restricted-access television systems. Multiple decryption keys are used to decrypt encrypted material which is transmitted to customers of a restricted-access television system. |
| 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... |
| 6453159 |
Multi-level encryption system for wireless network |
| Sep-17-2002 |
A multi-level encryption scheme is provided for a wireless network. A first level of encryption is provided primarily for wireless communications taking place between a mobile terminal and an access point.... |
| 6526506 |
Multi-level encryption access point for wireless network |
| Feb-25-2003 |
A multi-level encryption scheme is provided for a wireless network. A first level of encryption is provided primarily for wireless communications taking place between a mobile terminal and an access point.... |
| 7039192 |
Methods for data encryption using multiple layer steganography |
| May-2-2006 |
A method for embedding a message within a file may include generating a session key [305] and encrypting the session key with a public key to produce an encrypted session key [310]. The message... |
| 6931128 |
Methods and systems for generating encryption keys using random bit generators |
| Aug-16-2005 |
A security key, such as an encryption key, is generated so as to make it more difficult for eavesdroppers to identify the key. Specifically, a cryptographically secure random number generator generates... |
| 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... |
| 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... |
| 6212279 |
Method of elliptic curve cryptographic key exchange using reduced base tau expansion in non-adjacent form |
| Apr-3-2001 |
A method of cryptographic key exchange by two users agreeing on an elliptic curve of the form y.sup.2 +xy=x.sup.3 +ax.sup.2 +1, where "a" is a member of a field F.sub.2, where the elliptic curve is defined... |
| 6278780 |
Method of and an apparatus for generating internal crypto-keys |
| Aug-21-2001 |
To provide a method of generating internal crypto-keys to be set initially in a feedback-shift-registers of a pseudo-random-sequence generator of a stream cipher system with sufficient security and sufficiently... |
| 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... |
| 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... |
| 6944778 |
Method for testing an integrated circuit including hardware and/or software parts having a confidential nature |
| Sep-13-2005 |
This method uses a tester (T) capable of being connected to an integrated circuit (CI) to be tested. A random number (RNG-C) is generated and ciphered using a key (k) by a cipher algorithm to obtain a... |
| 5761307 |
Method for securing data in a telecommunications system |
| Jun-2-1998 |
A subscriber network is operated bidirectionally and has one or more coaxial line tree networks which are shared in each case by a plurality of subscriber-end network termination units and extend between... |
| 6882730 |
Method for secure distribution and configuration of asymmetric keying material into semiconductor devices |
| Apr-19-2005 |
In one embodiment, a method is described to secure transfer data from one location to another for storage in an electronic component. The transfer occurs with part of the data routed to a first destination... |
| 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... |
| 6134660 |
Method for revoking computer backup files using cryptographic techniques |
| Oct-17-2000 |
A system enables a user to remove a file from a file system and from all backup tapes without ever mounting a single tape. When a file is backed up, it is first encrypted using a randomly generated key... |
| 6839436 |
Method for providing long-lived broadcast encrypton |
| Jan-4-2005 |
A long-lived broadcast encryption method that adapts to the presence of compromised keys and continues to broadcast securely to privileged sets of users over time. In one aspect, a method for providing... |
| 6850620 |
Method for preventing key share attacks |
| Feb-1-2005 |
A key agreement protocol for preventing key-share attacks wherein a method is provided for establishing a common shared key between a pair of correspondents in a station-to-station protocol by exchanging... |
| 6167136 |
Method for preventing copying of digital video disks |
| Dec-26-2000 |
A method for securely storing analog or digital data on a data storage medium. An analog information signal is combined with a noise signal. The composite noise and information signal is encrypted with... |
| 6944300 |
Method for migrating a base chip key from one computer system to another |
| Sep-13-2005 |
A method for migrating a base chip key from a first computer system to a second computer system is disclosed. A first computer system includes a base chip key 1, and a second computer system includes... |
| 6526509 |
Method for interchange of cryptographic codes between a first computer unit and a second computer unit |
| Feb-25-2003 |
The method provides that a session code (K) can be agreed between a first computer unit (U) and a second computer unit (N), without it being possible for any unauthorized third party to gain access to... |
| 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... |
| 6996238 |
Method for generating and looking-up transaction keys in communication networks |
| Feb-7-2006 |
Method and apparatus for generating keys for encoding data for transmission, a device identification is accessed and at least one key corresponding to the device identification. Data is encoded using at... |
| 6212636 |
Method for establishing trust in a computer network via association |
| Apr-3-2001 |
A method is disclosed for establishing trusted communications with associations for communications between users on an Internet Protocol based computer network. The method entails the first user's SNIU... |
| 6215872 |
Method for creating communities of trust in a secure communication system |
| Apr-10-2001 |
A method and apparatus for creating communities of trust within a secure communications system is accomplished by allowing end-users to obtain arbitrary lists of trusted public keys from other end-users... |
| 5987125 |
Method for communicating seismic data |
| Nov-16-1999 |
Seismic survey data is stored in encrypted format in a first memory. The first memory module is transferred to a first computer in a first location. A portion of the seismic survey data is selected using... |
| 5604804 |
Method for certifying public keys in a digital signature scheme |
| Feb-18-1997 |
A method for certifying public keys of a digital signature scheme in a communications system is provided. The secure communications system is one in which there are at least two levels of authorities.... |
| 5420927 |
Method for certifying public keys in a digital signature scheme |
| May-30-1995 |
A method for certifying public keys of a digital signature scheme in a secure communications system is provided. The secure communications system in one in which there are authorities with previously-certified... |
| 6947563 |
Method for assigning encryption keys |
| Sep-20-2005 |
An encryption key matrix has rows grouped into segments, with a set of one segment per column establishing a slot. Slots are assigned to device manufacturers, with the keys of the slots then being assigned... |
| 6888944 |
Method for assigning encryption keys |
| May-3-2005 |
Sets of encryption keys useful by devices for decrypting encrypted content are defined using an error-correcting code such as a Reed-Solomon code to define vectors of length "n" over an alphabet of (0,... |
| 6931133 |
Method and system of securely escrowing private keys in a public key infrastructure |
| Aug-16-2005 |
A method of restricting access to private keys in a public key infrastructure provides for storage of an encrypted private key at a primary site. A masked session key is stored at a secondary site, where... |
| 6148405 |
Method and system for secure lightweight transactions in wireless data networks |
| Nov-14-2000 |
The present invention is a method and system for establishing an authenticated and secure communication session for transactions between a server and a client in a wireless data network that generally... |
| 6898288 |
Method and system for secure key exchange |
| May-24-2005 |
A method for secure transmission of a data message locks, at the sender, the data message using a first lock. The locked data message is transmitted to the receiver. Next, the locked data message is double-locked,... |
| 5737424 |
Method and system for secure distribution of protected data using elliptic curve systems |
| Apr-7-1998 |
A method and system for secure distribution of protected data using elliptic curve systems includes a program to unlock software. The user obtains an encrypted unlocking code from a processing center and... |
| 6330671 |
Method and system for secure distribution of cryptographic keys on multicast networks |
| Dec-11-2001 |
A method and apparatus for secure and scalable key management in a multicast network environment is provided. In a first portion, one or more seed nodes on the network receive a multicast transmission... |
