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Cryptography > Key Management Key ManagementKey Management 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.11/15/07 - 20070263874 - Key-based encryption There is disclosed a method, apparatus, computer program and computer program product for facilitating secure data communications. The secure data communications is carried out using a secret key for encrypting data flowing between first and second entities over a communications link. First it is determined that the communications link has ... 11/08/07 - 20070258594 - Secure login using a multifactor split asymmetric crypto-key with persistent key security A first network station encrypts a first message with a first key portion from a first split of a private or public key of a user's asymmetric crypto-key and transmits it during a network session. The second network station decrypts the transmitted encrypted first message with a second key portion ... 10/25/07 - 20070248231 - Storage medium processing method, storage medium processing device, and program Rental business of content data is adequately performed while preventing a improper use of rights or the like by a user. Rental user key data Kuren1-3, and rental content key data Kuren1-3 includes management metadata M1-M3 and M1′-M3′, respectively. The management metadata includes data use termination date/time indicating an expiration ... 10/18/07 - 20070242829 - Key table and authorization table management In certain embodiments, a player device that receives and plays content stored on packaged media, the player device has a media reader that receives a packaged media to read digital data stored thereon. The player device has a secure persistent storage device storing a key table containing a plurality of ... 10/04/07 - 20070230707 - Method and apparatus for handling keys used for encryption and integrity A method and an arrangement for providing keys for protecting communication between a terminal (300) and service points in a communication network. A basic key (Ik) is first established with a service control node (304) when the terminal has entered the network. An initial modified key (Ik1) is then created ... 10/04/07 - 20070230706 - Method and apparatus for facilitating role-based cryptographic key management for a database One embodiment of the present invention provides a system that facilitates role-based cryptographic key management. The system operates by receiving a request at a database server from a user to perform a cryptographic operation on data on the database server, wherein the user is a member of a role, and ... 10/04/07 - 20070230705 - Key-updating method, encryption processing method, key-insulated cryptosystem and terminal device In a key-insulated cryptosystem according to the present invention, a plurality of external devices are associated with a number of updates of a terminal secret key which has already been updated, and a different piece of secret information is stored in each of the external devices. In addition, a key-updating ... 10/04/07 - 20070230704 - Method and apparatus for managing cryptographic keys One embodiment of the present invention provides a system for managing keys. During operation, the system receives a request from a user at a database to encrypt/decrypt data at the database. In response to this request, the system sends a user-token to the user, wherein the user-token includes a user-key ... 10/04/07 - 20070230703 - Transmission of media keys Techniques are described for communicating electronic media keys from one device to another. The target device may comprise different mechanisms for indicating that transmission of a media key is in progress and also to indicate successful transmission. Various actions may be performed in response to transmission of media keys. ... 09/20/07 - 20070217614 - Program update method and server A system including a secure LSI 1 establishes a communication path to/from a server 3 (UD1), and receives a common key-encrypted program generated by encryption with a common key and transmitted from the server 3 (UD6 and UD7). The received common key-encrypted program is decrypted to generate a raw program, ... 09/20/07 - 20070217613 - Method and apparatus for managing a key management system A network system for key management, including a server, a key management system providing process logic for key management system management located on the server, a key management system storage providing a secure data storage for the key management system, an application using the key management system to manage an ... 09/20/07 - 20070217611 - Techniques for managing keys using a key server in a network segment The election of a key server is provided. The key server is a single device that broadcasts an encryption key to other devices in a network segment. Also, automatic reelection of a new key server is provided when a current key server becomes unavailable. Key receivers may separately detect that ... 08/30/07 - 20070201701 - Prepaid access control method The present invention aims at minimising the impact of an attack on the reloading of the credit into a security module connected to a Pay-TV decoder. The solution to this problem resides in a prepaid access control method to television products broadcasted in a data stream to a Pay-TV decoder ... 08/30/07 - 20070201700 - Efficient key updates in encrypted database systems A system, method and programmed article of manufacture to perform efficient encryption key updates in encrypted database-as-a-service (DAS) environments using a key registry and key locks. A database as a service environment allows organizations to outsource their data management infrastructures to a database service provider. The service provider employs data ... 08/23/07 - 20070195957 - Method and apparatus for secure key management and protection In a system having a control processor, an apparatus is provided with at least one memory. The at least one memory includes a first memory portion for storing at least one first decryption key. A decryption engine uses the first decryption key to decrypt information. A key processor provides the ... 08/23/07 - 20070195956 - Association, authentication, and security in a network Methods, devices, and systems are provided facilitating security within a network managed by a central coordinator. In some embodiments, the exchange of security keys is performed within one or more time slots that are defined by the central coordinator and known to stations exchanging these security keys. Furthermore, security, e.g., ... 08/16/07 - 20070189541 - Method and system for initialzing a key management system A network system for key management including a server, a key management system providing process logic for key management system initialization located on the server, a key management system storage providing a secure data storage for the key management system, and an interface providing a means for inputting data into ... 08/16/07 - 20070189540 - Improved broadcast key-derivation A key generation system is disclosed that provides for the generation of privileged group keys based on the input of a privileged group. The system performing the key generation has stored component keys corresponding to every possible subset X of the unitary set, where subsets X have k or fewer ... 08/16/07 - 20070189539 - Hierarchical threshold tree-based broadcast encryption method A hierarchical threshold tree-based broadcast encryption method includes a first step for a server initialization and a user subscription, a second step of distributing a message to enable a privileged user (authorized user) to decrypt a group key, and a third step of the privileged user (authorized user) decrypting the ... 08/02/07 - 20070177740 - Encryption key distribution system, key distribution server, locking terminal, viewing terminal, encryption key distribution method, and computer-readable medium It is aimed to provide an encryption key distribution system which can be easily operated, highly freely share the data therein, and achieve high reliability for authentication of one or more unlocking right owners who are assigned to each encrypted folder. An encryption key distribution system 500 stores a lock ... 08/02/07 - 20070177739 - Method and apparatus for distributed data replication Disclosed is a data replication technique for providing erasure encoded replication of large data sets over a geographically distributed replica set. The technique utilizes a multicast tree to store, forward, and erasure encode the data set. The erasure encoding of data may be performed at various locations within the multicast ... 07/26/07 - 20070172067 - System for selective data transmission A system and method for selective data transmission is described. The system includes a sender S and a plurality of receivers (R1-R4). The sender has associated encryption means (24) comprising a plurality of base keys (k1-k4). The receivers (R1-R4) each have associated decryption means (34) each comprising a receiver set ... 06/28/07 - 20070147620 - Method for encryption key management for use in a wireless mesh network A method for managing secure routing keys (200) for on-demand routing protocols used in a wireless mesh network includes sending an secure routing key from a key distribution node to an access node (201). A temporary communications route which is time and usage limited is initiated (203) between a wireless ... 06/28/07 - 20070147619 - Methods and system for managing security keys within a wireless network A system for managing security keys in a wireless network includes a manufacturer certification authority (MCA) for providing a signed digital MCA certificate for installation into a new network element (NE) at the manufacturer's facility prior to the new NE being installed and initialized in the network. The MCA also ... 06/28/07 - 20070147618 - Method for safeguarding data traffic between a first terminal and a first and a second terminal and a second network To safeguard data transmission, a first terminal communicates in a first network with the aid of at least one session key and a second terminal communicates in a second network with the aid of at least one session key. The first terminal is connected to the second terminal through a ... 06/14/07 - 20070133806 - Information processing method, decryption method, information processing device, and computer program A configuration by which amounts of information to be stored in equipment for decrypting a ciphertext can be reduced in a cipher text supplying configuration to which a tree structure based on a SD scheme is applied. An intermediate label from which special subset corresponding labels among labels respectively corresponding ... 06/07/07 - 20070127722 - Method and apparatus for managing a key management system A network system for key management, including a server, a key management system providing process logic for key management system management located on the server, a key management system storage providing a secure data storage for the key management system, an application using the key management system to manage an ... 06/07/07 - 20070127721 - Method and apparatus for hiding a private key A method and system for hiding an encryption key. The method including creating a directed graph having a plurality of vertices and edges, including a source and a sink vertex. Each vertex has a vertex value. The source vertices have a common source value, and the sink vertices have a ... 06/07/07 - 20070127720 - Timeline protection A method and system for timecode generation including: receiving an encryption key and an implemented encryption method, for each one of a plurality of frames, receiving a timecode and an associated presentation time stamp (PTS) associated with the one frame, for each one of the plurality of frames, encrypting the ... 06/07/07 - 20070127719 - Efficient management of cryptographic key generations The invention generally relates to management of cryptographic key generations in an information environment comprising a key-producing side generating and distributing key information to a key-consuming side. A basic concept of the invention is to define, by means of a predetermined one-way key derivation function, a relationship between generations of ... 05/31/07 - 20070121948 - Key establishment method and system using commutative linear function Provided are a key establishment method and system using commutative linear functions. In the method, a server defines a set of linear functions that use elements of a first finite field as coefficients and satisfy a commutative rule, selects a first linear function from the set, and selects a predetermined ... 05/31/07 - 20070121947 - Methods and apparatus for providing a key management system for wireless communication networks Embodiments of methods and apparatus for providing a key management system for wireless communication networks are generally described herein. Other embodiments may be described and claimed. ... 05/17/07 - 20070110246 - Information processing apparatus and method, setting apparatus and method, and program An information processing apparatus for using key information calculated on the basis of predetermined information including information obtained from an IC chip as a communication party on the other end in order to perform encryption processing with the IC chip. The information processing apparatus includes: among a plurality of calculation ... 05/03/07 - 20070098175 - Security enabler device and method for securing data communications A security enabler device has a key management module adapted to generate and store security keys and to destroy the generated keys if necessary to protect security. An encryption and authentication module is linked to the data storage module and is adapted to use the security keys to provide secure ... 04/26/07 - 20070092082 - Digital rights management security mechanism for use in a wireless communication apparatus A wireless communication apparatus includes a processor core and a security unit. The processor core may receive digital content encrypted with a first encryption key and may store the encrypted digital content within a memory unit of the wireless communication apparatus. The processor core may also receive a second encryption ... 04/26/07 - 20070092081 - Content reproduction apparatus A content reproduction apparatus (1) which reproduces digital contents, including a device key storage unit (110) which holds a device key (110a) specific to the content reproduction apparatus (1) in a manner which does not allow access from outside the content reproduction apparatus (1), a device ID storage unit (19) ... 04/05/07 - 20070076886 - Network device, network system and method for updating a key When conducting encryption key update, each of the network device successively causes transition among an initial state in which only data encrypted using an old encryption key used before the update can be transmitted and received, a state in which both data encrypted using the old encryption key and data ... 03/29/07 - 20070071243 - Key validation service A key validation service (KVS) provides the ability to assess the validity of the private key used to send secure information. Each time a user wants to send information to a recipient, the user first sends proof to the KVS that the user's private key is valid. When the KVS ... 03/29/07 - 20070071242 - Communication system, common key control apparatus, and general communication apparatus When a common key is updated to a new common key, it is possible to prevent the generation of a period during which not all the general communication apparatuses are enabled to make mutual communications using encrypted data while at the same time reducing the memory consumption of the general ... 03/22/07 - 20070064951 - Method and system for key insertion for stored encrypted content An encrypted content transport stream is received by a viewer's device and recorded for subsequent playback. During recording, keys in headers of packets of the stream are stripped and placed in sequence in a table. Also, the table indicates changes in key indicating bits. When it is desired to play ... 01/18/07 - 20070014412 - Data security for digital data storage A computing system includes data encryption in the data path between a data source and data storage devices. The data storage devices may be local or they may be network resident. The data encryption may utilize a key which is derived at least in part from an identification code stored ... 01/18/07 - 20070014411 - Property-based data authentication mechanism In one embodiment, a network comprises a plurality of nodes that communicate with one another. A first node included in the plurality of nodes generates a plan comprising a plurality of marker states. Each marker state comprises a value for a property associated with the first node. When the first ... 12/28/06 - 20060291661 - Cryptographic authentication and/or establishment of shared cryptographic keys, including, but not limited to, password authenticated key exchange (pake) A server (120) uses a password (π) to construct a multiplicative group (ZN*) with a (hidden) smooth order subgroup (<x′>), where the group order (Pπ) depends on the password. The client (110) uses its knowledge of the password to generate a root extraction problem instance (z) in the group and ... 12/28/06 - 20060291660 - Sim uicc based broadcast protection A method is described herein for protecting multicast/broadcast traffic (e.g., mobile TV, multimedia) which is transmitted from a broadcast service provider via a mobile operator to one or more mobile devices. To protect the multicast/broadcast traffic, the method utilizes a broadcast key distribution and encryption architecture that is based in ... 12/14/06 - 20060280307 - Data transmission apparatus and data reception apparatus There provided are transmission and reception apparatuses which can realize performing key distribution and encrypted communication in a simultaneous manner. A transmission apparatus overlaps minute amplitude modulation based on a random number signal on a multi-level signal generated based on information data and key information. A reception apparatus, in addition ... 12/07/06 - 20060274898 - Key table and authorization table management A receiver device consistent with certain embodiments that receives and decrypts digital cable or satellite television signals has a receiver that tunes and demodulates the television signal into a digital transport stream. A decrypter decrypts the digital transport stream using a pair of decryption keys. A first decryption key array ... 11/02/06 - 20060245594 - Mobile terminal and authentication method In a mobile terminal that performs transmission and reception of a message between an IC card and a terminal program, the security is improved by preventing an imposture of a source of a message or an interception of a message. A mobile terminal comprises an IC card and a terminal ... 11/02/06 - 20060245593 - Secret information setting device and secret information setting method A secret information setting device includes a generation instruction receiving unit receiving a secret information generation instruction from a user; a secret information generation unit generating the secret information in response to the secret information generation instruction received with the generation instruction receiving unit; a secret information storage unit storing ... 10/26/06 - 20060239462 - Record carrier comprising encryption indication information The present invention relates to a record carrier (10) for storing user data in sectors (S) and management information (n) associated with said sectors. In order to provide a simple, low-cost, flexible and secure copy protection of the user data when being transmitted over a communication bus (6) of a ... 10/19/06 - 20060233376 - Exchange of key material A communication network manages key material. A method generates and provides session keys from a security node to an access node for further propagation during handoff procedures, without requiring the security node to take part in the handoff procedures. ... 10/12/06 - 20060227973 - Information processing device, information recording medium, information processing method, and computer program In an information recording medium storing many pieces of content, a configuration that allows use management on segmented content basis is provided. A plurality of content management units corresponding to title, index and other information are set by partitioning stored content in an information recording medium. Different unit keys that ... 09/28/06 - 20060215839 - Method for handling data A method, a system and a computer program for changing an encryption key of data encrypted by a first key and stored on an archive server (40), wherein a conversion is applied to the data, generating recrypted data decryptable by means of a second key, the conversion being generated on ... 09/21/06 - 20060210082 - Volatile device keys and applications thereof A key is determined from a volatile response using circuitry on the device. The volatile response depend on process variation in fabrication of the device. Error control data that depends on the first volatile response can be computed, stored externally to the device, and then used to generate the key ... 09/21/06 - 20060210081 - Ciphertext switching for syntax compliant encryption Systems and methods providing ciphertext switching for syntax compliant encryption are described. In one aspect, intermediate ciphertext is generated from syntax compliant plaintext. Post-processing is applied to the intermediate ciphertext to determine if there are any illegal symbols in the intermediate ciphertext. If an illegal symbol is located, the illegal ... 09/07/06 - 20060198524 - Hardware implementation of the mixcolumn/invmiscolumn functions An encryption/decryption unit, a conversion module, a method and a computer program product share common logic for both a cipher transformation and an inverse cipher transformation to reduce the number of gates requires with a small increase in wait time. A keyschedule unit providing at least one key value. The ... 08/31/06 - 20060193473 - Key management for group communications A system for key management for a plurality of nodes includes: a first key generation device (130) for generating a first set of secret keys for secure communication between the plurality of nodes; a second key generation device (130) for generating a second set of secret keys that is different ... 08/24/06 - 20060188099 - Key management system and method for the same An inexpensive and secure key management system provides a digital content copy protection system and a method for the same. The key management system is constituted by a master data memory configured to be stored with a device key, a secret data management block configured to convert the device key ... 08/17/06 - 20060182282 - Method for securely distributing configuration information to a device An MTA certificate containing a public key is provided to a provisioning server, typically via an MIB. The provisioning server retrieves configuration information associated with the MTA. A symmetric session key is randomly generated and used to encrypt the configuration information. The public key is used to encrypt the symmetric ... 08/10/06 - 20060177066 - Key management method using hierarchical node topology, and method of registering and deregistering user using the same A key management, user registration and deregistration for a digital rights management (DRM) system in a home network, using a hierarchical node topology. In the key management, node information is generated by allocating a pair of keys (a public key and a private key) to each node. A node tree ... 08/10/06 - 20060177065 - System and methods for encrypting data utilizing one-time pad key A system and methods for encrypting and decrypting data within an encryption management system. A random number table is generated by concatenating true random numbers. A subset of the random number table is then randomly selected to be used for the generation of a one-time pad key. The one-time pad ... 08/10/06 - 20060177064 - Secure memory card with life cycle phases A secure memory card with encryption capabilities comprises various life cycle states that allow for testing of the hardware and software of the card in certain of the states. The testing mechanisms are disabled in certain other of the states thus closing potential back doors to secure data and cryptographic ... 08/03/06 - 20060171540 - Wireless network system and communication method for external device to temporarily access wireless network A wireless network system and a communication method, where an external network device easily and temporarily logs in and out of the wireless network. A key management device of the wireless network system includes a limited communication unit that receives encryption information from a wireless network device, a storage unit ... 07/20/06 - 20060159271 - Method of local data distribution preserving rights of a remote party A method and system of data distribution of musical data preserving the rights of a remote party employing cryptographic keys both a public key and a private key whereby a recipient must know a secret key in order to read some protected data. The sender must know a key to ... 07/20/06 - 20060159270 - User key management method for broadcast encryption (be) A broadcast encryption (BE) for acquiring an encryption key which is used to decrypt a session key by a node receiving services, with less computation overhead. A plurality of subgroups, each consisting of at least one of a plurality of nodes, are generated, and layers are formed according to a ... 07/20/06 - 20060159269 - Cryptographic system for resource starved ce device secure upgrade and re-configuration A system for key management and securing communications channels is presented for the upgrade of compact electronic devices via a communications channel by service providers such as the original manufacturer and, possibly, a number of authorized third party service providers. The manufacturer, acting as a trusted authority, generates and distributes ... 07/13/06 - 20060153387 - Key management method for home network and home network device and system using the same A method of managing a home network key in a home network environment, which has a key management server for managing the home network key and a plurality of home network devices, includes: allowing a home network device to generate device unique information and to transmit the device unique information ... 07/13/06 - 20060153386 - Multiple matching control method The aim of this invention is to pair a security module with one or more host apparatuses in an environment in which the host module has no connection with the management centre. This aim is achieved thanks to a pairing control method between a first device such as a removable ... 07/06/06 - 20060147045 - Method and apparatus for writing and using keys for encrypting/decrypting a content and a recording medium storing keys written by the method Content encryption information on content data recorded on a recording medium. A plurality of encryption keys is used for encrypting or decrypting a plurality of clip files containing content data in such a way that each of the plurality of encryption keys is used for encrypting or decrypting the whole ... 07/06/06 - 20060147044 - Copy-protected data carrier The present invention relates to a data carrier comprising an information layer (1) itself comprising a specific area (4) able to deliver a first optical signal and a second optical signal when illuminated by a light source. Said data carrier also comprises an additional layer (2) able to deliver an ... 06/29/06 - 20060140411 - Ciphering key management and distribution in mbms A method for key management and assignment in MBMS service, the method includes following steps: the group key locates in the root node on the highest layer, which only has child nodes and doesn't have parent nodes; private keys corresponding to users locate in leaf nodes; the described intermediate node ... 06/22/06 - 20060133616 - Cipher device using rc4 algorithm and method thereof An encryption/decryption device and a method thereof use an RC4 algorithm to reduce a waiting time for encryption/decryption thereby avoiding data process delay. The encryption/decryption device includes a management unit, an encryption/decryption unit, and a first interface. The management unit includes a WEP seed key generator for generating a WEP ... 06/22/06 - 20060133615 - Method and system for using a portable computing device as a smart key device A first data processing system, which includes a first cryptographic device, is communicatively coupled with a second data processing system, which includes a second cryptographic device. The cryptographic devices then mutually authenticate themselves. The first cryptographic device stores a private key of a first asymmetric cryptographic key pair and a ... 06/15/06 - 20060126849 - Microprocessor with program and data protection function under multi-task environment In a microprocessor, a program key for decrypting a program and a data key for encrypting/decrypting data processed by the program are handled as cryptographically inseparable pair inside the microprocessor, so that it becomes possible for the microprocessor to protect processes that actually execute the program, without an intervention of ... 06/15/06 - 20060126848 - Key authentication/service system and method using one-time authentication code Provided are a key authentication/service system and method using one-time authentication code. In the system and method, a key management client sends a key management server a message requesting transmission of a message for generating authentication code required to request a key management service. Next, the key management server creates ... 06/15/06 - 20060126847 - System and method for establishing secure communications between devices in distributed wireless networks A method of establishing secure communications between devices in a network is described. According to an embodiment, messages included in pairwise temporal key (PTK) command frames and group temporal key (GTK) command frames are defined. According to another embodiment, service primitives representing message exchanges between management entities within a device ... 06/15/06 - 20060126846 - Device authentication system A device authentication system comprises a terminal device, a data communications device connected to the terminal device, and a service provider. Device information stored in the terminal device is encrypted in order to produce authentication information. Transmission is carried out with respect to user information of the data communications device ... 06/08/06 - 20060120532 - Cryptographic-key generation and management Methods and systems are provided of managing a cryptographic key. A first key component is received from a first key custodian. A second key component is received from a second key custodian. A key operation is performed on the first and second key components to generate the cryptographic key. A ... 05/25/06 - 20060109985 - Broadcast encryption with dual tree sizes A method, system, and computer program product for broadcast encryption key management. The invention eliminates the need for pre-specification of a maximum number of keys that can be employed in a given broadcast encryption system by enabling an initial key to be extended by a link key. New receiver devices ... 05/18/06 - 20060104449 - Record carrier with distributed decryption information The invention relates to a system for improved copy protection comprising a record carrier like a CD-RW+ or a DVD storing copy-protected information and a device for reading from and/or writing to the record carrier. For that the record carrier (1) has a first area (3) storing information (data), which ... 05/04/06 - 20060093149 - Certified deployment of applications on terminals Embodiments of the present invention relate to secure deployment of software applications on transaction terminals using keys and certificates. In one embodiment, a method for electronically certifying an application for installation at a transaction terminal is accomplished at a terminal key management server by receiving an application along with a ... 04/27/06 - 20060088166 - Authentication method and method device, system, and program for delivering secret information between proximity terminals To easily and simply perform authentication and delivery of secret information between devices which perform a short-range wireless communication. When a device including a short-range wireless communication unit 20, a barcode creating unit 16, a barcode reading unit 17, and a barcode analyzing unit 18 is connected to a device ... 04/20/06 - 20060083378 - Security system for apparatuses in a network The invention relates to a security system for networks, comprising a first portable unit (1) with a memory (3) for storing a worldwide unambiguous key record (4) provided for short-range information transmission of the key record (4). At least one apparatus (2) of the network is provided with a receiving ... 04/06/06 - 20060072763 - Apparatus and method for storing data Provided are an apparatus and method for storing data. The apparatus includes a directory key generator generating a directory key required for encrypting and decrypting the data by inputting a device-specific key to a key generating function, the device-specific key being unique information allocated to the device and stored in ... 04/06/06 - 20060072762 - Stateless hardware security module Stateless hardware security modules facilitate securing data transfers between devices in a data communication system. The stateless hardware security module may communicate with other devices via a secure communication channel to securely transfer information between the client device and another device. As a result, sensitive information such as cryptographic keys ... 03/30/06 - 20060067532 - Communication unit and communication method A communication unit of the invention has a ciphering section which ciphers a content signal with a cipher key and outputs a ciphered content signal, a key ciphering section which ciphers the cipher key with the static device key and the dynamic device key preliminarily stored and outputs a ciphered ... 03/09/06 - 20060050888 - System and method for device identity check The method of the invention for checking the identity of devices is implemented in a device management system in a mobile telecommunication network. The system comprises devices to be managed, a server side device management application, a client side device management application, a database, and an interface between said device ... 03/02/06 - 20060045273 - Method and system for transmitting signaling information over a data transport network A method for transmitting signaling information, such as cryptographic key synchronization information, over a data path of a network, the data path having an originating end and a terminating end. The method uses in-band signaling to transmit the signaling information from the originating end of the data path to the ... 02/23/06 - 20060039565 - Method of controlling transmission and reception of data including encrypted data stream A method of transmitting and receiving encryption channels which are needed to be encrypted includes encrypting only a part of channel data to be encrypted and transmitting the encrypted part in a predetermined streaming method, and inserting a key to decode the encrypted stream into an adjacent non-encrypted stream and ... 02/16/06 - 20060034462 - Method of generating key for device authentication and apparatus using the method, and device authentication method and device authentication apparatus A method of generating a key for device authentication includes: generating an element vector by generating a number of elements corresponding to a size of an ID of the device; generating a subvector corresponding to a bit location at every location of the device ID at which a “1” is ... 02/16/06 - 20060034461 - Reconfigurable key search engine A Reconfigurable Key Search Engine is disclosed along with a mobile unit incorporating same and related methods. The RKSE is adapted to efficiently search a memory system storing a plurality of security keys potentially related to multiple networks. One embodiment uses a hierarchical memory system including at least one associative ... 02/16/06 - 20060034460 - Method and system of forecasting A forecasting system comprises a plurality of forecasters that provide predictions and that have individual identities. A plurality of users depend on receiving the predictions from the forecasters and use forecasts assembled there from to manage a business organization. An encryption system encodes and hides the individual identities of each ... 02/02/06 - 20060023887 - Threshold and identity-based key management and authentication for wireless ad hoc networks As various applications of wireless ad hoc network have been proposed, security has become one of the big research challenges and is receiving increasing attention. The present invention provides for a distributed key management and authentication approach by deploying the recently developed concepts of identity-based cryptography and threshold secret sharing. ... 01/26/06 - 20060018484 - Information processing device, information processing system, and program The present invention provides an information processing device, an information processing system, and a program capable of improving security and convenience. An information processing system (1) includes an IC card (30) which stores an encryption key and a registered password and allows the encryption key to be read when the ... 01/26/06 - 20060018483 - Delegation protocol A key-management method for delegating authority in a computer environment, suitable for essentially all UDP and TCP based applications. The method includes performing mutual authentication between a first computing entity and a plurality of other computing entities, and establishing pair-wise secure associations between the other entities. ... 01/12/06 - 20060008088 - Software plug-in framework to modify decryption methods in terminals The present invention provides methods, apparatuses, and systems for delivering protected multi-media content to a receiving device. Protected multi-media content and key information are inserted in a same time slice burst. A receiving device receives the time slice burst with the content datagrams and the key information and decrypts the ... 01/05/06 - 20060002561 - Apparatus and/or method for encryption and/or decryption for multimedia data A multimedia device having an encryption module, which prevents an encryption key from being exposed to the outside, is provided. The multimedia device includes: a key processing unit, which generates and manages an encryption key; and a data processing unit, which encrypts/decrypts content with the encryption key. Both the key ... 12/29/05 - 20050286722 - Establishing secure peer networking in trust webs on open networks using shared secret device key A trust web keying process provides secure peer networking of computing devices on an open network. A device is initially keyed at distribution to an end user or installer with a device-specific cryptographic key, and programmed to respond only to peer networking communication secured using the device's key. The device-specific ... 12/08/05 - 20050271211 - Key management system and playback apparatus The Information providing system includes a key management center, information transmitter and information receiver. The key management center assigns, to the receivers, confidential information and public information for decrypting the encrypted information transmitted by the information transmitter. The key management center determines the set of the receivers for which decryption ... 12/08/05 - 20050271210 - Key management protocol A key distribution server maintains a tree of nodes. Members of a group who are allowed access to information are associated with respective leaf nodes of the tree. The information is encrypted with a key comprising a join key field and a leave field, and these are associated with the ... 11/24/05 - 20050259825 - Key bank systems and methods for qkd Key banking methods and systems for quantum key distribution (QKD) are disclosed. A method of the invention includes establishing a primary key bank that stores perfectly secure keys associated with exchanging true quantum pulses between two QKD stations Bob and Alice. The method also includes establishing a secondary key bank ... 11/17/05 - 20050254657 - Optical disk player An optical disk player to reproduce information recorded on an optical disk, being operable by a remote controller, includes a system controller. The system controller displays an image of the remote controller on a display device by set-up. The system controller stores different items of color information for discriminating, from ... 11/17/05 - 20050254656 - Efficient transmission of cryptographic information in secure real time protocol Efficient transmission of cryptographic information in secure real time protocol. A transmitting terminal may be used to encrypt data with a session key derived from a bit-stream. The bit-stream may be sent with header information to the receiving terminal. To conserve bandwidth, the information may be divided into portions, and ... 11/03/05 - 20050244009 - System and method for obtaining certificate status of subkeys Systems and methods for updating status of digital certificate subkeys. A request is made to a key server to verify if a given key is revoked. If it is not, then the key with its subkeys is acquired from the key server. If one or more subkeys or signatures of ... 10/27/05 - 20050238174 - Method and system for secure communications over a public network A method (100) of secure communications over a public network can include establishing a permanent key and an ordered sequence of limited use keys (102), enabling the use of the permanent key at any time (104) and enabling the use of the limited use keys for a predetermined usage (106). ... 10/27/05 - 20050238173 - Graphical display of qkd system statistics Systems and methods for graphically displaying statistical information relating to the operation of a quantum key distribution (QKD) system. The method includes exchanging quantum photons between first and second QKD stations for each combination of modulator states, collecting data on the number of quantum photon counts obtained in each of ... 10/20/05 - 20050232429 - Securing home agent to mobile node communication with ha-mn key The invention is a new protocol for securing the communication link between the Home Agent and the Mobile Node. A cipher key and an integrity key are generated at a home AAA server and are also generated independently at the Mobile Node. The two keys generated at the home AAA ... 10/20/05 - 20050232428 - Deploying and provisioning wireless handheld devices A method carried out by a first system for establishing a secure bidirectional communication path between the first system and a second system for an exchange of one or more messages is described. A first key pair having a first public key and a first private key is generated, and ... 10/20/05 - 20050232427 - Unilateral session key shifting A system and method that facilitate secure communication employing dialog session keys that can be shifted unilaterally is provided. A key exchange key can further be employed to encrypt and/or decrypt the dialog session keys that are used to encrypt and/or decrypt message(s) that form a dialog between services. For ... 10/20/05 - 20050232426 - Session key exchange key A system and method for employing a key exchange key to facilitate secure communication is provided. The key exchange key can be employed, for example, to encrypt and/or decrypt dialog session key(s) that are used to encrypt and/or decrypt message(s) that form a dialog between an initiator system and target ... 10/13/05 - 20050226422 - Method and device for the generation of checkable forgery-proof documents The invention relates to a method and a device for the generation of checkable forgery-proof documents with an externally supplied cryptographic module, whereby the checking of authenticity of the document is carried out without using key information belonging to the cryptographic module. According to the invention, the method and the ... 10/06/05 - 20050220307 - System and method for communicating with a key variable loader (kvl) using a standard universal asynchronous receiver transmitter (uart) peripheral An encryption key interface system (200) includes a universal asynchronous receiver transmitter (UART) peripheral (209) that communicates with a key variable loader (KVL) (201) through a communications link (205, 207). A driver application (211) associated with the UART peripheral (209) is used to both receive and transmit commands to the ... 09/29/05 - 20050213767 - Encoding and recording apparatus, playback apparatus, and program The present invention relates to an encoding and recording apparatus, a playback apparatus, and a program which solve the possibility of a capacity shortage of a protected area accompanying an increase in an information amount and the number of content keys. It is configured such that an encoded user identifier ... 09/29/05 - 20050213766 - Hybrid cryptographic accelerator and method of operation thereof For use in a system-on-a-chip (SoC) having a secure execution environment (SEE) containing secure memory, a cryptographic accelerator, a method of performing cryptography therewith and an SoC incorporating the cryptographic accelerator or the method. In one embodiment, the cryptographic accelerator includes: (1) a key register located within the SEE and ... 09/29/05 - 20050213765 - Data processing method Key encryption key data KEK used for communication between a key management device 3 and receiving apparatuses 4—1 to 4_N is acquired based on a tree divided into two horizontal layers A0 and A1. In this case, the LSD method is employed as a revocation method of each section 31[0] ... 09/15/05 - 20050201562 - Secure storage in a file system A node may contain a secure store agent. A process executing on the node may request connection information from the secure store agent. An encryption key phrase may be accessed, responsive to the request for connection information, to decrypt the requested connection information. The requested connection information may be obtained ... 09/08/05 - 20050195980 - Method for broadcast encryption and key revocation of stateless receivers A tree is used to partition stateless receivers in a broadcast content encryption system into subsets. Two different methods of partitioning are disclosed. When a set of revoked receivers is identified, the revoked receivers define a relatively small cover of the non-revoked receivers by disjoint subsets. Subset keys associated with ... 08/18/05 - 20050180574 - Method and system for document transmission A method and system for document transmission via communication networks is provided for. A user will create a document specifying the recipient upon a document and transmit it to the recipient such that they will not be required to specify the means by which the document is to be transmitted ... 08/18/05 - 20050180573 - Access control for digital content A recording arrangement is provided for applying access control processing to input data content and for recording access-controlled data content on a content storage medium. The recording arrangement comprises an encryption apparatus for encrypting portions of the input data content and an access control memory device operable to securely store ... 08/18/05 - 20050180572 - Apparatus and method for distributing private keys to an entity with minimal secret, unique information In some embodiments, a method and apparatus for distributing private keys to an entity with minimal secret, unique information are described. In one embodiment, the method includes the storage of a chip secret key within a manufactured chip. Once the chip secret key is stored or programmed within the chip, ... 08/11/05 - 20050175182 - Encryption key device, encryption device and decryption device An encryption key device can be freely attached to and detached from an information processor encrypting or decrypting data and includes a memory, a pseudorandom number generator, and a controller. The memory stores an application program to operate the encryption key device and a group ID specifying permission for use ... 08/04/05 - 20050169481 - Method of assigning user keys for broadcast encryption A method of assigning user keys for broadcast encryption. According to the method, at least one unit tree in which grandparent nodes, parent nodes, and son nodes are hierarchically connected is created. User keys created to identify lower-level nodes connected to all nodes of the tree are assigned as first ... 08/04/05 - 20050169480 - Fast ciphering key search for wlan receivers A ciphering key management technique for use in a WLAN receiver is provided where a hash table is stored that has a first and a second table portion. The first table portion stores transmitter address data and the second table portion stores at least one cipher key. It is determined ... 08/04/05 - 20050169479 - Method of enabling secure transfer of a package of information The present invention relates to a method of enabling secure transfer of a package of information in a digital communications network from a sender to a receiver. According to the method a package of information is encrypted and provided to the receiver. A third party is provided with an encryption ... 08/04/05 - 20050169478 - Practical non-malleable public-key cryptosystem The present scheme improves the security of encrypted data or information by using of a practical public-key cryptosystem that is able to resist adaptive attacks. The disclosed scheme does not leak any information about the secret of the used key. Therefor the scheme generates an extended private key and public ... 07/07/05 - 20050147252 - System and method for high speed reversible data encryption The present invention provides systems and methods for facilitating encryption and decryption of data. In accordance with an exemplary embodiment of the present invention, an encryption key having a number of characters is located. A character in the encryption key is located to provide a located character in the encryption ... 07/07/05 - 20050147251 - Digital two-way communication control device and its method An interface block (11) converts the format of input downstream data (STRM). A CPU (12) receives the format-converted data (DIF) and realizes the MAC function. A TEK process block (13) receives TEK process data (DTEK) obtained from the data (DIF), analyzes the data structure of the TEK process data, and ... 06/30/05 - 20050141719 - Apparatus and methods for securing information in storage media The methods described herein are directed at securing information in storage media such as optical discs, magnetic disks or a combination thereof. In particular the methods describe embedding a first stream of data in a second stream of data by modulating the location of transition edges in the second stream ... 06/30/05 - 20050141718 - Method of transmitting and receiving message using encryption/decryption key Provided is a method of transmitting and receiving a message using an encryption/decryption key, by which each of a sender and a recipient can generate an encryption/decryption key and recover a key used for encryption/decryption while transmitting and receiving the message using an electronic device. The method includes: (a) a ... 06/30/05 - 20050141717 - Apparatus, system, and method for sealing a data repository to a trusted computing platform An apparatus, method, and system to seal a data repository to a trusted computing platform is described. The data repository may be sealed by encrypting the data on the repository and sealing a cryptographic key to a specific set of platform resources. With the data repository sealed to the platform, ... 06/23/05 - 20050135626 - Key cache management through multiple localities A method for a plurality of key cache managers for a plurality of localities to share cryptographic key storage resources of a security chip, includes: loading an application key into the key storage; and saving a restoration data for the application key by a key cache manager, where the restoration ... 06/16/05 - 20050129245 - Multipurpose key employing network communications apparatus and method A communications apparatus includes multipurpose keys each receiving designation of an operational function separately allocated thereto. An authorization function is selectively employed and authorizes a user. The authorization function is selectively used when the user starts operating one of the multipurpose keys. The operational function is controlled to exert in ... 06/16/05 - 20050129244 - System and method for mitigating denial of service attacks on trusted platform Trusted platform module (TPM) keys are copied to a floppy diskette or fob that is external to the customer device in which the TPM resides, so that if the keys in TPM are zeroed as a result of, e.g., a malicious denial of service attack, they can be copied back ... 06/16/05 - 20050129243 - Encryption key hiding and recovering method and system An encrypted data-encryption key is hidden in the random header of a message exchanged between two parties according to a shared function known by both parties A checksum of the modified random header is thereafter appended. ... 06/09/05 - 20050123142 - Method and apparatus for secure key replacement A method, and a corresponding apparatus, provide for remote, secure replacement of private keys in a private key infrastructure. The method is implemented as a secure key replacement protocol (SKRP), which includes the steps of receiving a rekey request, where the rekey request identifies a private key for replacement, authenticating ... 06/09/05 - 20050123141 - Broadcast encryption key distribution system Each terminal in a wireless ad-hoc communication system includes an encryption-key management list table 660. The encryption-key management list table 660 stores, in association with a terminal identifier 661 such as a MAC address, a unicast encryption key 662 for use in unicast communication with a terminal identified by the ... ### FreshPatents.com Support |