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Cryptography > Key Management > Key Distribution Key DistributionKey Distribution patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/08/07 - 20070258595 - Syncronizing device-specific encrypted data to and from mobile devices using detachable storage media A system and method for transferring encrypted data between a data source device and a data target device is en-closed. A system is also disclosed for using a detachable media to enable software applications on each device (target and source) to select an appropriate public key for specific data types ... 09/27/07 - 20070223703 - Method and apparatus for providing service keys within multiple broadcast networks An approach is provided for providing service keys in multiple broadcast networks. A message including a group of keys is generated for providing secure communication over a first broadcast network and a second broadcast network. A message is transmitted to a terminal within the first broadcast network and a terminal ... 08/23/07 - 20070195959 - Synchronizing encrypted data without content decryption Encrypted content is synchronized without requiring a password. The structure of the data is synchronized while the content of the data remains encrypted. When the user desires viewing the encrypted content of the structure, the user is prompted for the password to render the encrypted content. Succinctly stated, the password ... 08/09/07 - 20070183599 - Security key distribution using key rollover strategies for wireless networks Security key distribution techniques using key rollover strategies for wireless networks are described. A number of keys are generated, usually by an access point. The present invention allows a standard mode and a mixed mode. In standard mode, each device on the network supports automatic key updates. In mixed mode, ... 07/26/07 - 20070172069 - Domain management method and apparatus A method and apparatus of protecting digital content within a domain is provided. if a device registered with a domain withdraws from the domain, a domain key used in the domain before withdrawal of the device is updated to a domain key which cannot be used by the device; and ... 07/26/07 - 20070172068 - Methods and devices for counting user equipment units in a mobile radio telecommunication network For the transmission of an MBMS content to a plurality of user equipment units, the use of a p2m channel may only be beneficial if the number of joined user equipment units exceeds a threshold. However, counting is made difficult due to the fact that idle mode UE, also a ... 07/19/07 - 20070165862 - Laser autocalibration for qkd systems A method of autocalibrating a quantum key distribution (QKD) system (200) is disclosed. The QKD system includes a laser ((202) that generates photon signals in response to a laser gating signal (S0) from a controller (248). The method includes first performing a laser gate scan (304) to establish the optimum ... 07/12/07 - 20070160214 - Secure transmission system for a digital trunked radio system A security system for a digital trunked radio system having a digital control channel and a plurality of working channels, wherein said working channels are assigned for temporary use of individual radio units by digital control signals transmitted over said control channel, said control channel carrying digital control signals between ... 06/21/07 - 20070140495 - Qkd with classical bit encryption A method for enhancing the security of a quantum key distribution (QKD) system having QKD stations Alice and Bob. The method includes encrypting key bits generated by a true random number generator (TRNG) and sent to a polarization or phase modulator to encode weak optical pulses as qubits to be ... 06/07/07 - 20070127723 - Server pool kerberos authentication scheme The present disclosure relates to the authenticating a client against a pool of servers utilizing a secure authentication protocol, and, more specifically, to the authenticating a client against a pool of servers providing a common service, utilizing the Kerberos secure authentication protocol. ... 05/31/07 - 20070121950 - Data processing system, data processing method, and program providing medium The inventive data processing apparatus enables own memory device to store a plurality of key distribution approval data files each containing such a header data comprising a number of “link-count” data units each designating actual number of applicable contents data per decodable contents key based on an enabling key block ... 05/31/07 - 20070121949 - Systems and methods for facilitating secure key distribution to an embedded device An embedded program on an embedded device determines whether a security key has been assigned to the embedded device. If the security key has not been assigned, the embedded program uses a random number that is provided by a manufacturer of the embedded device and that is stored in memory ... 05/24/07 - 20070116294 - Cryptographic key distribution system and method for digital video systems A system and method for distribution of cryptographic keys to data encryption and decryption devices used to protect digital video/multimedia data transmitted over a display link between a digital video/multimedia source and a display device are provided. The digital data, which may be in Digital Visual Interface (DVI) format, from ... 05/17/07 - 20070110248 - Method for key distribution in a hierarchical multicast traffic security system for an internetwork Multicast networks are partitioned into hierarchical security domains. Each security domain may comprise one or more lower security domains. Each security domain includes a security broker that distributes a group key and translates multicast data destined to the security domain, if necessary. A primary security broker at the second level ... 05/17/07 - 20070110247 - Intrusion detection with the key leg of a quantum key distribution system In a method for secure transmission of data using a quantum key distribution system where individual photons each having a state of polarization are transmitted from the source to the recipient and where the state of polarization the photons is used to provide the series of bits of the encryption ... 04/26/07 - 20070092083 - Qkd system with synchronization channel verification Systems and methods for verifying error-free transmission of the synchronization (“sync”) channel of a QKD system are disclosed. The method includes sending a first pseudo-random bit stream (PRBS) over the sync channel from Alice to Bob, and verifying at Bob the accurate transmission of the first PRBS. The method also ... 04/19/07 - 20070086590 - Method and apparatus for establishing a security association A method for establishing a security association between a client and a service node for the purpose of pushing information from the service node to the client, where the client and a key server share a base secret. The method comprises sending a request for generation and provision of a ... 04/05/07 - 20070076888 - Double phase encoding quantum key distribution A method of distributing a quantum key from a sender to a recipient. The recipient generates a pulse having multiple photons; splits the pulse into first and second sub-pulses; phase modulates the first sub-pulse with a secret key; and transmits both the phase-modulated first sub-pulse and the second sub-pulse to ... 04/05/07 - 20070076887 - Double phase encoding quantum key distribution A laser pulse representing a bit of a quantum key is split into two pulses. In addition to known round trip phase encoding schema, a secret phase key is modulated into one of the two pulses: P1 and P2. The secret phase key is used to identify whether the returning ... 03/29/07 - 20070071245 - Methods and systems for communicating over a quantum channel Alice generates a sequence of key bits forming an initial cryptographic key. Alice then uses the sequence of key bits and a sequence of cipher bits to control respective control parameters of a quantum encoding process applied to a sequence of quantum pulses, where the sequence of cipher bits used ... 03/29/07 - 20070071244 - Qkd station with efficient decoy state capability A quantum key distribution station having the capability of forming decoy signals randomly interspersed with quantum signals as part of a QKD system is disclosed. The QKD station includes a polarization-independent high-speed optical switch adapted for use as a variable optical attenuator. The high-speed optical switch has a first attenuation ... 03/15/07 - 20070058813 - Opportunistic use of null packets during encryption/decryption The use of keys to encrypt data in a transmitter and to decrypt encrypted data in a receiver are synchronized in accordance with a synchronization signal that opportunistically replaces a null packet in an MPEG transport stream. Additionally or alternatively, key related information is transmitted and/or received in place of ... 03/08/07 - 20070053520 - Method and apparatus for establishing a communication key between a first communication partner and a second communication partner using a third party For establishing a communication key (KB) for a communication between a first communication partner (13) and a second communication partner (12), a third party (15) is used. After establishing a communication key between the first communication partner (13) and the third party (15) based on an identification of the first ... 02/01/07 - 20070025554 - Remote control association methodology An infrared remote device, such as a remote control, provides an encryption key to wireless radio frequency (RF) capable devices for use in wireless RF communications. The encryption key is provided using infrared transmissions. The infrared remote device may generate the encryption key and transmit the encryption key to other ... 01/18/07 - 20070014415 - Quantum key distribution method and apparatus A quantum key distribution (QKD) method involves the sending of random data from a QKD transmitter to a QKD receiver over a quantum signal channel, and the QKD transmitter and receiver respectively processing the data transmitted and received over the quantum signal channel in order to seek to derive a ... 01/18/07 - 20070014414 - Hardware linked product key Software piracy is inhibited by distributing unique software product keys operable in hardware or a hardware linked device. Software operable on the hardware requires the presence of the key in or accessible via the hardware, and operates only if the hardware product key is present. A method for securing software ... 01/18/07 - 20070014413 - Delivering policy updates for protected content Various embodiments permit policy updates, such as DRM policy updates, to be delivered and updated for a given piece of protected content. In at least some embodiments, various protocols can be extended to permit policy updates to be represented and carried by the protocol. In one embodiment, Hypertext Transport Protocol ... 01/04/07 - 20070003063 - Methods and apparatus to perform associated security protocol extensions Methods and apparatus to perform associated extensions for negotiated channel security protocols are disclosed. A disclosed method to extend a security protocol comprises exchanging identifying information between a first and a second endpoint, determining a secret based on the exchanged identifying information, determining a first master secret based on the ... 12/28/06 - 20060291662 - Decryption-key distribution method and authentication apparatus A decryption key for decrypting data from an access node is distributed to an access terminal intending to receive the data. An authentication unit receives a message for terminal authentication including a terminal identifier from the terminal and authenticates the terminal. The authentication unit refers to a content registration table ... 12/21/06 - 20060285693 - Method and apparatus for automatic and secure distribution of a symmetric key security credential in a utility computing environment Embodiments of the invention provide a method and an apparatus for automatic, secure, and confidential distribution of a symmetric key security credential in a utility computing environment. In one method embodiment, the present invention establishes a symmetric key at a management server, the symmetric key automatically associated with a logical ... 11/30/06 - 20060269067 - Opportunistic use of null packets during encryption/decryption The use of keys to encrypt data in a transmitter and to decrypt encrypted data in a receiver are synchronized in accordance with a synchronization signal that opportunistically replaces a null packet in an MPEG transport stream. Additionally or alternatively, key related information is transmitted and/or received in place of ... 11/02/06 - 20060245595 - Intercepting a communication session in a telecommunication network Intercepting a secure communication session includes distributing a key from a key distribution point to establish a secure communication session between a first endpoint and a second endpoint. A secure channel is established between the key distribution point and an intercepting point. The intercepting endpoint may be determined to be ... 10/26/06 - 20060239463 - Qkd system laser autocalibration based on bit-error rate A method of autocalibrating the timing of the laser (202) in a quantum key distribution (QKD) system (200) is disclosed. Laser (202) generates photon signals (204) in response to a laser gating signal (S0) from a controller (248). The method includes first performing a laser gate scan (304) to establish ... 10/19/06 - 20060233377 - Key distribution method of mobile ad hoc network A key distribution method is provided. The method is adapted for a network. The network comprises a plurality of nodes. In the key distribution method, a plurality of keys are provided to each node. A plurality of blocks are provided, serving as platforms. An algorithmic parameter is selected and a ... 09/21/06 - 20060210084 - Method and system to securely store and distribute content encryption keys A method comprising receiving a product key at a service provider, where the product key is (1) received from a first content provider, and (2) encrypting a first content controlled by the first content provider. The method encrypts the product key within a first secure device at the service provider ... 09/21/06 - 20060210083 - Private key delivery system and a private key delivery method A private key delivery system and a private key delivery method are disclosed. The private key delivery system includes a transmitter, a receiver, and an optical transmission line connecting the transmitter and the receiver. The transmitter includes a single photon generating unit for simultaneously generating two or more single photons ... 09/14/06 - 20060204010 - Sentinel synchronization method for enhancing qkd security A method of improving the security of a QKD system is disclosed. The method includes sending synchronization (“sync”) signals from a first QKD station to the second QKD station over a sync signal channel and recording data relating to the arrival times of the sync signals at the second QKD ... 09/07/06 - 20060198525 - Systems and arrangements to adjust resource accessibility based upon usage modes Systems and arrangements to adjust resource accessibility based upon usage modes are contemplated. Embodiments may include a supervisor instance such as an operating system that is adapted to select one or more supervisor keys from a set of supervisor keys available to the host node or platform upon which the ... 08/10/06 - 20060177067 - Hybrid broadcast encryption method A hybrid broadcast encryption method is provided. The hybrid broadcast encryption method includes setting initialization values, generating a node secret using the initialization values; generating a private secret using the node secret; sending the node secret and the private secret; generating a broadcast message based on a revoked group; encrypting ... 08/03/06 - 20060171541 - Method for creating and distributing cryptographic keys in a mobile radio system and corresponding mobile radio system A first cryptographic key (318) and a second cryptographic key (322) are created by a mobile radio terminal (103) and by a computer of the home communications network (108, 109) by using authentication key materials (312). The first cryptographic key (318) is transmitted to the computer of the visited communications ... 03/30/06 - 20060067533 - Secure communication system and method using shared random source for key changing Apparatus for use by a first party for key management for secure communication with a second party, said key management being to provide at each party, simultaneously remotely, identical keys for said secure communication without transferring said keys over any communication link, the apparatus comprising: a datastream extractor, for obtaining ... 03/23/06 - 20060062392 - Key manager for qkd networks Key manager systems and methods for a QKD-based network are disclosed. The system includes a QKD layer that generates quantum encryption keys, a persistent storage layer that stores the quantum encryption keys, and a key management layer. The key management layer generates an application registration record that includes a list ... 02/23/06 - 20060039566 - System for installing software with encrypted client-server communication When client-server software is distributed from a vendor over a network, the server receiving the software generates a random encryption key in response to installing a part of the software. The encryption key is used for communication between the server and the client. Every installation of the software thus results ... 01/19/06 - 20060013401 - Method and apparatus for delivering keys The present invention encompasses an electronic device, such as a server, which may be operated in a communication system. The electronic device comprises a method for receiving a request from another electronic device to transmit keys, for example a mobile terminal. Responsive to the request, the server generates the required ... 01/19/06 - 20060013400 - Method of delivering direct proof private keys in signed groups to devices using a distribution cd Delivering a Direct Proof private key in a signed group of keys to a device installed in a client computer system in the field may be accomplished in a secure manner without requiring significant non-volatile storage in the device. A unique pseudo-random value is generated and stored along with a ... 01/19/06 - 20060013399 - Method of delivering direct proof private keys to devices using a distribution cd Delivering a Direct Proof private key to a device installed in a client computer system in the field may be accomplished in a secure manner without requiring significant non-volatile storage in the device. A unique pseudo-random value is generated and stored in the device at manufacturing time. The pseudo-random value ... 01/05/06 - 20060002563 - Multi-user quantum cryptography method and system using wavelength division multiplexing A multi-user quantum cryptography system and method are described herein. The system comprises a relay including a quantum information server so configured as to generate quantum information communications having different wavelengths and a multiplexer so configured as to separate the different quantum information communications generated by the quantum information server ... 01/05/06 - 20060002562 - Method and apparatus for geometric key establishment protocols based on topological groups The present invention proposes a continuous multi-parameter version of Diffie-Hellman protocol based on topological groups. In its turn, based on this continuous protocol, a method for public establishment and distribution of keys for encryption systems is implemented. An embodiment of the method, while providing an extremely high security level, is ... 12/29/05 - 20050286723 - Qkd system network QKD system networks (50, 200, 300) and methods of communicating between end-users (P1, P2) over same are disclosed. An example QKD system network (50) includes a first QKD station (A1) and a second QKD station (A2) with a relay station (58) in between. The relay station includes a single third ... 10/13/05 - 20050226423 - Method for distributes the encrypted key in wireless lan A method for distributing encryption keys in WLAN that combines a key distribution process with an authentication process of mobile hosts and utilizes an authentication server or a wireless gateway to manage key distribution so that mobile hosts can roam in a scope larger than the coverage area of the ... 09/29/05 - 20050213768 - Shared cryptographic key in networks with an embedded agent Methods and apparatuses associated with sharing cryptographic keys in a network domain. An embedded agent on a network endpoint participates in the distribution of cryptographic keys. In one embodiment the embedded agent receives and stores a shared symmetric key, as do embedded agents on other network endpoints in the same ... 09/15/05 - 20050201563 - Quantum cryptography with fewer random numbers An apparatus and method for implementing a quantum cryptography system that requires fewer random bits. The emitter divides the key in blocks of bits. Instead of changing the basis for each bit of key sent by the emitter, the same basis is used for all the bits within a block. ... 09/01/05 - 20050190923 - Encryption/decryption system and key scheduler with variable key length A key scheduler, which may selectively generate an encryption round key and a decryption round key corresponding to an initial round key, which may have a variable key length. The key scheduler may include a key storage unit, a key calculating unit, and a key output unit. The key storage ... 09/01/05 - 20050190922 - Secure use of a single single-photon detector in a qkd system A method of using a single single-photon detector (SPD) in a quantum key distribution (QKD) system is described. The method includes modulating a phase of a quantum signal a first time at a first QKD station by applying a first phase modulation randomly selected from a set of four possible ... 09/01/05 - 20050190921 - Systems and methods for framing quantum cryptographic links An optical transmitter includes a transmitting unit and a processing unit. The transmitting unit transmits multiple optical synchronization pulses at a first intensity, and transmits multiple optical quantum cryptographic key distribution (QKD) pulses at a second intensity. The processing unit encodes a cryptographic key symbol in a quantum state of ... 08/18/05 - 20050180575 - Communication system and synchronization method thereof A clock signal of a master clock of a sender is transmitted to a receiver through a classical channel and is returned from the receiver. The clock signal is transmitted with strong light from a sender-side quantum unit to a receiver-side quantum unit through a quantum channel. A sender-side synchronization ... 08/11/05 - 20050175184 - Method and apparatus for a per-packet encryption system A network security system designed to provide per-packet encryption based on an encryption key identifier and an associated encryption key. Packets or groups of packets are encrypted based on information that relates to the packet such as service type, network number, and the like. This encryption criterion is associated with ... 08/11/05 - 20050175183 - Method and architecture for secure transmission of data within optical switched networks A method and architecture for secure transmission of data within optical switched networks. In one embodiment, the optical switched network comprises a photonic burst-switched (PBS) network. Under various schemes, security keys are distributed to each edge node in a PBS network. A source edge node uses an encryption key to ... 06/23/05 - 20050135627 - Two-way qkd system with active compensation A two-way actively stabilized QKD system that utilizes control signals and quantum signals is disclosed. Because the quantum signals do not traverse the same optical path through the system, signal collisions in the phase modulator are avoided. This allows the system to have a higher transmission rate than a two-way ... 06/16/05 - 20050129246 - Intelligent digital secure lockbox and access key distribution system (dlb) An intelligent secure digital access code storage lock box and an access code or key distribution system. The method and system includes an intelligent digital lock box having embedded processing functionality and a user interface capable of receiving electronic queries, the reception, storage, access to, and deletion of digital access ... ### FreshPatents.com Support |