| 6128389 |
Authentication key management system and method |
| Oct-3-2000 |
A system and method for enabling sensitive authentication information to be under the control of the service provider and transmitting only non-sensitive authentication information to the AC, and for providing... |
| 6118993 |
Effective use of dialed digits in call origination |
| Sep-12-2000 |
The present invention strengthens authentication protocols by making it more difficult for handset impersonators to perform call origination using replay attacks. The present invention accomplishes this... |
| 6112078 |
Method for obtaining at least one item of user authentication data |
| Aug-29-2000 |
A method for obtaining at least one item of user specific data, wherein the user specific data is obtained at least partly by using paging or a short message service. |
| 6097817 |
Encryption and decryption in communication system with wireless trunk |
| Aug-1-2000 |
A communication system having a wireless trunk for connecting multiple phone lines over wireless communication links to a cellular network comprises a central telephone switch, such as a private branch... |
| 6084967 |
Radio telecommunication device and method of authenticating a user with a voice authentication token |
| Jul-4-2000 |
Apparatus and a method are described for providing a security token. The security token may be used for numerous applications, but is particularly useful in conjunction with radiotelephone devices having... |
| 6075859 |
Method and apparatus for encrypting data in a wireless communication system |
| Jun-13-2000 |
In a communications system, a method of transforming a set of message signals representing a message comprising the steps of first encoding one of the set of message signals in accordance with a first... |
| 6061558 |
Method and apparatus for a nation-wide cellular telephone network |
| May-9-2000 |
A method and apparatus for a nation-wide cellular telephone network that controls access to cellular systems is provided in which a cellular system (14) includes a mobile unit (16), transmission towers... |
| 6061453 |
Communication system by radio connection |
| May-9-2000 |
A radio communication system supplied by a battery, comprising at least one emitter and a receiver. The receiver operates in an intermittent manner between an active mode and a stand-by mode. The receiver... |
| 6052591 |
Broadcasting messages to mobile stations within a geographic area |
| Apr-18-2000 |
A dialable directory number is assigned to a particular location area or cell area. A telecommunications user wanting to transmit user defined messages, such as a text message, to mobile stations within... |
| 6047071 |
Network-initiated change of mobile phone parameters |
| Apr-4-2000 |
The procedure for Over-The-Air Parameter Administration (OTAPA) utilizes the over-the-air programming protocol and procedures which support the Over-The-Air Service Provisioning (OTASP) feature in accordance... |
| 6041124 |
Radio communication system and method and mobile communication terminal device |
| Mar-21-2000 |
In a radio communication system, efficient information provision services is obtained where various information is provided to mobile communication terminal devices separately from call services, update... |
| 6038549 |
Portable 1-way wireless financial messaging unit |
| Mar-14-2000 |
A secure messaging system including a secure messaging system controller (1100) and a first financial messaging unit (906). A user initiates a financial transaction by providing a transaction authentication... |
| 6035043 |
Cellular telephone manifest system |
| Mar-7-2000 |
This invention relates to a cellular telecommunications systems that records in the cellular telephone all the telephone calls made by that particular cellular telephone. This enables the owner or agent... |
| 6035039 |
Fraud detection and user validation system for mobile earth terminal communication device |
| Mar-7-2000 |
In a mobile satellite system, a mobile communication system includes a fraud detection and user validation system and method for commissioning the mobile communication system in the mobile satellite system.... |
| 6026293 |
System for preventing electronic memory tampering |
| Feb-15-2000 |
Methods and apparatus for preventing tampering with memory in an electronic device, such as a cellular telephone, are disclosed. An electronic device having a memory and a processing means contains logic... |
| 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... |
| 6016349 |
Cellular phone provided with legal identification means of the owner of the cellular phone |
| Jan-18-2000 |
A cellular phone including a central processing unit, receiving and transmitting means, and data input/output means, the phone comprising means for the legal identification of the owner of the cellular... |
| 6014085 |
Strengthening the authentication protocol |
| Jan-11-2000 |
The invention strengthens authentication protocols by making it more difficult for handset impersonators to gain system access using replay attacks. This goal is accomplished using challenge codes as a... |
| 5991623 |
Method and system for preventing unjust use of personal communication terminal |
| Nov-23-1999 |
In a communication system which is composed of portable personal communication terminals, a base station for transmitting and receiving a radio signal to and from each of the personal communication terminals... |
| 5991405 |
Method for dynamically updating cellular phone unique encryption keys |
| Nov-23-1999 |
In a method for dynamically updating a cellular-phone-unique-encryption key previously stored in, and common to, each of a cellular phone and an associated home location register (HLR) for providing security... |
| 5970144 |
Secure authentication-key management system and method for mobile communications |
| Oct-19-1999 |
A system and method for enabling sensitive authentication information to be under the control of the service provider and transmitting only non-sensitive authentication information to the AC, for providing... |
| 5943615 |
Method and apparatus for providing authentication security in a wireless communication system |
| Aug-24-1999 |
An apparatus for providing authentication of a mobile station in a wireless communication system. The present invention takes the number dialed by the mobile station user and computes the 24 bit number... |
| 5943425 |
Re-authentication procedure for over-the-air activation |
| Aug-24-1999 |
A method and system for providing OTA during the service origination call, wherein the mobile station performs an authentication procedure in response to a re-authentication message received, using shared... |
| 5940509 |
Method and apparatus for controlling country specific frequency allocation |
| Aug-17-1999 |
A secure communication system is provided for transmitting a country specific frequency allocation in encrypted form between a host processor and a remote device. The secure communication system comprises... |
| 5933773 |
Method and a device for mobile telephone supervision |
| Aug-3-1999 |
The invention relates to a method and to an arrangement for identifying an unauthorized user (A2) of a mobile telephone (M) that includes a terminal identity (m) and a chosen security code (PIN1). When... |
| 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... |
| 5915021 |
Method for secure communications in a telecommunications system |
| Jun-22-1999 |
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... |
| 5889861 |
Identity confidentiality method in radio communication system |
| Mar-30-1999 |
The radio communication system has at least one first radio station such as a base station and a plurality of second radio stations such as mobile stations. The base station at least possesses a public... |
| 5887250 |
Mobile station having lock code based on secure value |
| Mar-23-1999 |
A method is disclosed for operating a mobile station (10) that includes the steps of (a) storing in the mobile station a SPC derived at least in part from a multi-bit secret pattern that is stored in the... |
| 5875394 |
Method of mutual authentication for secure wireless service provision |
| Feb-23-1999 |
A mutual authentication process assures that a subscriber does not provide sensitive activation information to an imposter network and a network does not provide sensitive activation information to an... |
| 5850445 |
Authentication key management system and method |
| Dec-15-1998 |
A system and method for automatically securely generating and programming an MS and SAMS with the sensitive authentication information while significantly reducing the risk of misappropriation of the sensitive... |
| 5826186 |
Method for terminating a wireless communication of a mobile communication unit |
| Oct-20-1998 |
The method operates in a system including a switching center, a base station responsive to the switching center and a mobile communication unit responsive to the base station, and includes receiving a... |
| 5825889 |
Use of duplex cipher algorithms for satellite channels with delay |
| Oct-20-1998 |
An apparatus and method for ciphering traffic exachanged in both directions between a satellite/cellular telephone and a ground station networkusing an orbitial satellite. A buffer memory is provided at... |
| 5809141 |
Method and apparatus for enabling mobile-to-mobile calls in a communication system |
| Sep-15-1998 |
A communication system is disclosed which reduces loop delay when a first wireless phone calls a second wireless phone wherein the first and second phones are served by the same relay station. The communication... |
| 5805992 |
Method for validating a communication link |
| Sep-8-1998 |
The method of the present invention generally validates a communication link in a communication system. In particular, the method validates a communication link between a cordless base station and authorization... |
| 5794139 |
Automatic generation of private authentication key for wireless communication systems |
| Aug-11-1998 |
Apparatus and method for automatically generating an authentication key (A-Key) in a mobile station wherein the mobile station periodically receives random numbers from a base station, and automatically... |
| 5790676 |
Radio port controller in a wireless personal communications system |
| Aug-4-1998 |
A preferred embodiment provides a radio port controller in a wireless personal communications system including a first interface module in communication with a radio port, a second interface in communication... |
| 5771446 |
Anti-fraud cellular security system |
| Jun-23-1998 |
A method and apparatus using a PIN number for preventing theft of cellular telephone service is disclosed. The PIN is requested silently by a visual display panel and entered silently by recalling the... |
| 5768383 |
Authorized cellular voice messaging and/or analog or digital data communication access and verification control system |
| Jun-16-1998 |
This invention relates to cellular voice messaging and/or analog or digital data messaging systems that utilize encryption and employ encrypted seed number signals to make it more difficult to make unauthorized... |
| 5748734 |
Circuit and method for generating cryptographic keys |
| May-5-1998 |
A circuit for, and method of, generating a cryptographic key at a communications node. The circuit includes: (1) communications circuitry for communicating a first seed during a first communications session... |
| 5740247 |
Authorized cellular telephone communication payment refill system |
| Apr-14-1998 |
This invention overcomes the disadvantages of the prior art by providing cellular telecommunications systems that utilize encryption and employ encrypted seed number signals to enable various payment plans... |
| 5729537 |
Method and apparatus for providing anonymous data transfer in a communication system |
| Mar-17-1998 |
A method, and associated apparatus, of providing a communication station with anonymous access to a communication network to communicate data therein. Access is provided to the communication station only... |
| 5708716 |
Fraud detection and user validation system for mobile earth terminal communication device |
| Jan-13-1998 |
An authentication system authenticates a mobile communication system each time it attempts to register or communication in a mobile satellite system. The authentication system stores a first security key... |
| 5708710 |
Method and apparatus for authentication in a communication system |
| Jan-13-1998 |
A method and apparatus for performing authentication in a communication system. The method includes the steps of detecting an unexpected authentication message, updating a counter value, comparing the... |
| 5689563 |
Method and apparatus for efficient real-time authentication and encryption in a communication system |
| Nov-18-1997 |
Radio frequency based cellular telecommunication systems often require both subscriber units and communication units of a fixed network communication system to maintain secret data which may be used to... |
| 5668876 |
User authentication method and apparatus |
| Sep-16-1997 |
Authorization for a user to use a service is provided by a modified pager which calculates a unique response code to a transmitted challenge code based on the challenge code, an input personal identification... |
| 5661806 |
Process of combined authentication of a telecommunication terminal and of a user module |
| Aug-26-1997 |
The terminal and the user module are authenticated in a combined manner on the basis of an authentication key calculated on the one hand by the terminal and on the other hand by the network. A session... |
| 5655019 |
Identity protection method for use with wireless telephone systems |
| Aug-5-1997 |
A cellular phone identity protection system that protects the identities of cellular telephones as they initiate calls through a cellular telephone system. The identity protection is provided through the... |
| 5623546 |
Encryption method and system for portable data |
| Apr-22-1997 |
A system and method allows portable, encrypted data to be accessible through multiple hosts, including new hosts (14), without requiring a secure link to the new hosts. A split key encryption system encrypts... |
| 5615267 |
Method for adaptively switching between PCS authentication schemes |
| Mar-25-1997 |
A method for adaptively switching between the WS and S authentication schemes is based on the customer's usage. A first preferred embodiment provides a 2n-1 state automaton (where n>1), which switches... |
