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| Number | Title | Issue Date |
| 7945052 | Method of distributing a decryption key in fixed-content data Secondary content in encrypted for distribution to client terminals by selecting at least a portion of raw encrypted audio-video data (REAVD) that is provided on a media article as an encryption key, encrypting secondary content using the encryption key, and storing... | 05/17/2011 |
| 7940934 | System and method for securing computing management functions In a computing management system authentication procedures are secured by protecting keys and/or processes used during the authentication procedures. In some embodiments the system cryptographically protects any keys used to mutually authenticate a management consol... | 05/10/2011 |
| 7936882 | Method to trace traceable parts of original private keys in a public-key cryptosystem The aim of the present invention is to propose a very fast alternative mechanism to the traitor tracing algorithm introduced by Boneh and Franklin to trace private keys in a public-key cryptosystem. This invention concerns a method to trace traceable parts of origin... | 05/03/2011 |
| 7936881 | 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 informat... | 05/03/2011 |
| 7929701 | Multiple level public key hierarchy for performance and high security Multiple public/private key pairs of varying levels of security are used to provide a high level of security while still allowing fast processing of encrypted information. The lower-security level includes keys that are small in length, that are changed relatively o... | 04/19/2011 |
| 7929702 | System and method for generating reproducible session keys A system and method for generating reproducible session keys in a wireless messaging system. The session key is generated based on a hash of a message itself, optionally concatenated with additional information. Since the local server stores the message, it can easi... | 04/19/2011 |
| 7929703 | 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 i... | 04/19/2011 |
| 7929704 | Modified triple wrap encryption/decryption system Messages are encrypted/decrypted according to a modified triple wrap procedure in which the messages are encrypted/decrypted in three encryption/decryption operations and are processed in three additional operations using first, second, third, fourth, fifth, and six... | 04/19/2011 |
| 7920706 | Method and system for managing cryptographic keys A key management of cryptographic keys has a data package including one or more cryptographic keys that are transferred to a personal device 100 from a secure processing point 150 of a device assembly line in order to store device specific cryptographi... | 04/05/2011 |
| 7912223 | Method and apparatus for data protection Described is a method for secure data disposal. Data stored in storage volume(s) is encrypted with a specific encryption key. Before the key is disposed of, a clear text string is encrypted with the same key and the encrypted data is associated with the clear text s... | 03/22/2011 |
| 7907734 | Key distribution control apparatus, radio base station apparatus, and communication system A key distribution control apparatus, a radio base station apparatus and a communication system for improving security. A communication system (10) comprises an Access controller (100), which serves as a key distribution control apparatus, a wireless L... | 03/15/2011 |
| 7903819 | Memory efficient storage of large numbers of key value pairs In one embodiment of the present invention, storing a plurality of key value pairs may be accomplished by first, for each of two or more quantities of most significant bits, determining how much overall memory usage will be saved upon removal of the corresponding qu... | 03/08/2011 |
| 7899184 | Ends-messaging protocol that recovers and has backward security The presented messaging protocol uses three new public keys in a signed and encrypted message to achieve backward security and recovery in an environment where an attacker now and then obtains the security parameters in exposed, decrypted form. Backward security is ... | 03/01/2011 |
| 7899185 | Real privacy management authentication system A system for secure communications. An authentication procedure establishes a session key between communicating entities that is used to encrypt subsequent communications. The authentication procedure can be repeated for each n messages exchanged, where n is an inte... | 03/01/2011 |
| 7899186 | Key recovery in encrypting storage devices A method for recovering a password includes: obtaining a request code from a data storage device, transmitting the request code to an external authority that produces a recovery code from the request code, and using the recovery code to recover a password and an enc... | 03/01/2011 |
| RE42163 | Data management system The present invention provides a system to ensure security of data in a computer network system. A center certifies a public-key of user of the system and distributes a secret-key. A first system comprises the center in a network, an information provider and a plura... | 02/22/2011 |
| 7894605 | Systems and methods to securely generate shared keys A method for secure bidirectional communication between two systems is described. A first key pair and a second key pair are generated, the latter including a second public key that is generated based upon a shared secret. First and second public keys are sent to a ... | 02/22/2011 |
| 7885411 | Key agreement and re-keying over a bidirectional communication path 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... | 02/08/2011 |
| 7881476 | Delivering enhanced multimedia content on physical media Enhanced multimedia content on physical media interacts with the user through a media player and the Internet. Enhanced multimedia utilizes IDs for pieces of content on the media and a media key block. On the enhanced media is a file with a list of URLs. As the enha... | 02/01/2011 |
| 7873167 | System and method for effectively pre-distributing key for distributed sensor network A system for effectively pre-distributing keys for a distributed sensor network is disclosed, The system includes: a plurality of sensor nodes, each of which has a sensing function, a calculation function, and a wireless communication function; and a base station wh... | 01/18/2011 |
| 7873166 | Method for undetectably impeding key strength of encryption usage for products exported outside the U.S In one embodiment, a communication device includes a key strength controlling agent 308 operable to (i) receive a request for a cryptographic key; (ii) determine, from a restriction identifier, whether the cryptographic key strength is restricted; (iii) when ... | 01/18/2011 |
| 7869602 | User-based digital rights management A content management system includes a mobile station, a service provider, and a content distribution kiosk. A content encryption key is associated with the mobile station, and a copy of the key is provided to the mobile station. In providing content to the mobile s... | 01/11/2011 |
| 7869603 | Encryption key path diagnostic A method and a computer program product are provided to perform a key path diagnostic that aids in isolating an error within the encryption storage system. A first communication test is performed on a path between the key proxy and the drive. The first communication... | 01/11/2011 |
| 7869604 | System for an encryption key path diagnostic A system is provided to perform a key path diagnostic that aids in isolating an error within the encryption storage system. The system includes at least one drive, a key proxy, a key server, a key manager, and a processor. The processor performs a first communicatio... | 01/11/2011 |
| 7864961 | Method of managing a mobile multicast key using a foreign group key The present invention relates to a method of managing a mobile multicast key using a foreign key. More specifically, the present invention relates to a method of managing a mobile multicast key using a foreign key for secure communication between a mobile terminal a... | 01/04/2011 |
| 7864960 | Techniques for securing content in an untrusted environment Techniques for securing content in an untrusted environment are provided. Content is encrypted and stored with a content delivery service in an encrypted format. Encrypted versions of a content encryption/decryption key and a first key are also housed and distribute... | 01/04/2011 |
| 7860252 | Circuit security A system is provided in which a first circuit is protected by security features provided by a second circuit. The first circuit comprises a processor which retrieves content from a memory. Initially, the contents of the memory are authenticated using security featur... | 12/28/2010 |
| 7860253 | Wireless perimeter security device and network using same A Radio Frequency based security system for providing security for wireless Local Area Networks (WLAN) that allows the creation and maintenance of arbitrarily shaped secure wireless access areas with boundaries around said wireless Local Area Network and prevents ac... | 12/28/2010 |
| 7853018 | 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 s... | 12/14/2010 |
| 7848524 | Systems and methods for a secure recording environment Systems and methods are disclosed for providing electronic keys that are used to encrypt and decrypt secure, captured data in a customer center. In one embodiment, the method comprises the steps of: establishing a secure communication over a network between the key ... | 12/07/2010 |
| 7826619 | 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 ... | 11/02/2010 |
| 7822207 | Key protection mechanism A method of protecting secret key integrity in a hardware cryptographic system includes first obtaining an encryption result and corresponding checksum of known data using the secret key, saving those results, then masking the secret key and storing the masked key. ... | 10/26/2010 |
| 7822205 | 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 su... | 10/26/2010 |
| 7822206 | Systems and methods for management and auto-generation of encryption keys Systems, methods and media for managing and generating encryption keys are disclosed. In one embodiment, a processor executes encryption key processing computer code to receive requests for keys from an application program. The processor determines whether the reque... | 10/26/2010 |
| 7809142 | Data scrambling and encryption of database tables An apparatus, program product and method protect data in a database table from unauthorized access through the combination of scrambling the data in the rows and columns of a database table and encrypting the data in different rows and/or columns using different enc... | 10/05/2010 |
| 7801308 | Secure key encoding for content protection A device and method for protecting HDCP cryptographic keys are presented herein. The device and method include receiving a set of HDCP cryptographic keys, encoding the set of HDCP cryptographic keys such that the resultant encoded cryptographic data is enabled to be... | 09/21/2010 |
| 7796761 | Distribution and authentication of public keys using random numbers and diffie-hellman public keys A system to exchange and authenticate public cryptographic keys between parties that share a common but secret password, using a pair of random numbers, a pair of Diffie-Hellman public keys computed from the random numbers and the password, a Diffie-Hellman symmetri... | 09/14/2010 |
| 7796760 | Approach for managing access to messages using encryption key management policies Controlling access to disseminated messages includes implementing one or more key management policies that specify how various encryption keys are maintained and in particular, when encryption keys are made inaccessible. Deleting a particular key renders inaccessibl... | 09/14/2010 |
| 7792302 | Securely coupling an FPGA to a security IC Disclosed is a mechanism for securely coupling a security IC and an FPGA. This mechanism creates a shared secret key; creates a password key; generates an encrypted shared secret key by encrypting the “shared secret key” with the password key; incorporates the ... | 09/07/2010 |
| 7792300 | Method and apparatus for re-encrypting data in a transaction-based secure storage system A method for re-encrypting encrypted data in a secure storage file system, including obtaining selected data to re-encrypt from the secure storage file system using a user data access record and the encrypted data, decrypting the selected data using a symmetric key,... | 09/07/2010 |
