Control Vector Or Tag Patents (Class 380/280)
  • Patent number: 8296579
    Abstract: There is provided a system and method for updating a basic input output system (BIOS). An exemplary method comprises obtaining a BIOS update package comprising a BIOS image update, a BIOS Signature, and a plurality of Public Key regions, wherein each Public Key region comprises a Public Key area and a signature area. The exemplary method also comprises updating a current Public Key with a new Public Key if the new Public Key is identified in one of the Public Key regions. The exemplary method additionally comprises validating the BIOS Signature using the current Public Key.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: October 23, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Mark A. Piwonka, José A. Sancho-Dominguez
  • Patent number: 8291234
    Abstract: Systems and methods consistent with the present invention encode a list so users of the list may make inquiries to the coded list without the entire content of the list being revealed to the users. Once each item in the list has been encoded by an encoder, a bit array with high and low values may be used to represent the items in the list. The bit array may be embodied in a validation system for allowing users to query the list to determine whether an inquiry item is on the list. The validation system determines which bits to check by executing the same coding process executed by the encoder. If all the bits are high, then the inquiry item is determined to be part of the list, if at least one bit is low, then the inquiry item is determined not to be part of the original list.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: October 16, 2012
    Assignee: United States Postal Service
    Inventors: Robert F. Snapp, James D. Wilson
  • Patent number: 8290164
    Abstract: A trusted platform module (TPM) is a silicon chip that constitutes a secure encryption key-pair generator and key management device. A TPM provides a hardware-based root-of-trust contingent on the generation of the first key-pair that the device creates: the SRK (storage root key). Each SRK is unique, making each TPM unique, and an SRK is never exported from a TPM. Broadly contemplated herein is an arrangement for determining automatically whether a TPM has been replaced or cleared via loading a TPM blob into the TPM prior to the first time it is to be used (e.g. when a security-related software application runs). If the TPM blob loads successfully, then it can be concluded that the TPM is the same TPM that was used previously. If the TPM blob cannot be loaded, then corrective action will preferably take place automatically to configure the new TPM.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: October 16, 2012
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: Matthew P. Lietzke, James P. Hoff, David Rivera
  • Patent number: 8290151
    Abstract: A device for determining an inverse of an initial value related to a modulus, comprising a unit configured to process an iterative algorithm in a plurality of iterations, wherein an iteration includes two modular reductions and has, as an iteration loop result, values obtained by an iteration loop of an extended Euclidean algorithm.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: October 16, 2012
    Assignee: Infineon Technologies AG
    Inventor: Wieland Fischer
  • Patent number: 8285991
    Abstract: An electronic signature device includes a processor, a memory, a user input device including a first biometric input device, and a device interface, all communicatively connected by at least one bus. A method of personalizing the electronic signature device to a user includes receiving a digitized biometric signature of the user via the first biometric input device. A cryptographic key is generated. A biometric electronic template is generated based on the digitized biometric signature. The cryptographic key and the biometric electronic template are stored in the memory.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: October 9, 2012
    Assignee: TecSec Inc.
    Inventor: Edward M. Scheidt
  • Patent number: 8284930
    Abstract: In computing point multiples in elliptic curve schemes (e.g. kP and sQ) separately using, for example, Montgomery's method for the purpose of combining kP+sQ, several operations are repeated in computing kP and sQ individually, that could be executed at the same time. A simultaneous scalar multiplication method is provided that reduces the overall number of doubling and addition operations thereby providing an efficient method for multiple scalar multiplication. The elements in the pairs for P and Q method are combined into a single pair, and the bits in k and s are evaluated at each step as bit pairs. When the bits in k and s are equal, only one doubling operation and one addition operation are needed to compute the current pair, and when the bits in k and s are not equal, only one doubling operation is needed and two addition operations.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: October 9, 2012
    Assignee: Certicom Corp.
    Inventors: Adrian Antipa, Yuri Poeluev
  • Patent number: 8285996
    Abstract: A database management system (1) comprises up to fifty or more workstations (2), each for a user. The environment may, for example, be a hospital and the system manages medical records in a secure manner. Each user has a private key issued by a KGC (5). A database controller (3) updates a secure database (3) with data and associated signatures generated by the user workstations (2). Thus every record of the secure database (3) has a signature to provide full traceability and non-repudiation of data edits/updates. It is important for the system (1) that the signatures are verified on a regular basis, say every hour. Such a task would be extremely processor-intensive if the database (3) is large. However this is performed by a verification processor (4) of the system (1) in a much shorter time than heretofore, t1+n(&Dgr;), where t1 is the time for one verification, n is the number of signatures, and &Dgr; is a time value which is a very small proportion of t1 (less than 1%).
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: October 9, 2012
    Assignee: Dublin City University
    Inventors: Noel McCullagh, Michael Scott, Neil Costigan
  • Patent number: 8271424
    Abstract: A method of preserving privacy and confidentiality in a system where information is associated with an existing web page having an address. The method includes receiving a store command from a first user system, the store command including at least a database key and information to be associated with the web page, wherein the database key was created by performing a cryptographic hash function on the address of the web page; storing the information at a location in a storage database; associating the location with the database key; receiving a retrieve command from a second user system, the retrieve command including the database key calculated by the second user system; retrieving stored information from one or more locations in the database associated with the database key; and transmitting the stored information to the second user system.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: September 18, 2012
    Assignee: International Business Machines Corporation
    Inventors: Daniela Bourges-Waldegg, Christian Hoertnagl, James F. Riordan
  • Patent number: 8270612
    Abstract: Systems and techniques for mapping compound keys. In one aspect, a method includes receiving a first compound key, mapping the first compound key to a first surrogate key, mapping the first surrogate key to a second surrogate key, mapping the second surrogate key to a second compound key, and making the second compound key available for data processing activities.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: September 18, 2012
    Assignee: SAP AG
    Inventors: Karl Fuerst, Florian Kresser, Holger Gockel
  • Patent number: 8218768
    Abstract: A cryptosync design comprising (1) a channel identifier indicative of a particular channel via which a data packet is sent, (2) an extended time stamp indicative of a time value associated with the data packet, and (3) a counter indicative of a packet count associated with the data packet. The lengths of the extended time stamp and counter fields and the time unit for the extended time stamp are parameters that may be configured for each channel. At the sender, the extended time stamp for the cryptosync may be obtained from the System Time maintained by the sender. The counter value for the cryptosync may be provided by a counter that is maintained for the channel by the sender. The sender may include a time stamp and/or the counter value, if they are needed to derive the cryptosync at the receiver, in a header of the data packet.
    Type: Grant
    Filed: March 25, 2002
    Date of Patent: July 10, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Ramin Rezaiifar, Paul E. Bender, Roy Franklin Quick, Jr.
  • Patent number: 8219821
    Abstract: A system and method for signature based data container recognition is provided. When a new data container, such as a lun, is created, a security appliance generates a signature of the data container, by, e.g., examining the contents of one or more data blocks of the data container. The generated signature is then associated with the appropriate encryption key for the data container and is stored either within a configuration database of the security appliance or on a key management system operating within a security appliance environment. To identify the encryption key associated with a data container, the security appliance generates a signature of the data container and compares the generated signature with the stored signatures. Should there be a matching signature, the security appliance utilizes the encryption key associated with the matching signature to process data access requests to/from the data container.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: July 10, 2012
    Assignee: NetApp, Inc.
    Inventors: Ori Zimmels, Yuval Frandzel
  • Patent number: 8208638
    Abstract: A set of equipment for secure direct information transfer over the Internet contains information transmitting terminal devices for collaborating with an information forwarding network, taking part in the information traffic. The individual information transmitting terminal devices are equipped with a sender partial unit, a receiver partial unit and a storage partial unit comprising an ID-register containing a device identification signal, a C-register for storing a coding key and a D-register for storing a decoding key. The C-register containing the coding key is connected to the sender partial unit, and a coding key and a collaborating decoding key are allocated to each individual information transmitting terminal device.
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: June 26, 2012
    Inventors: Miklós Jobbágy, Gábor Kuti, János Zelenák
  • Patent number: 8204230
    Abstract: A communication device including a communication connection establishing circuit configured to establish an ad hoc network communication connection between the communication device, a second communication device and a third communication device, a generating circuit configured to generate encryption parameters to be used by the second communication device and the third communication device for encrypting and decrypting data transmitted between the second communication device and the third communication device via the communication connection when the first communication device has left the communication connection, a signaling circuit configured to signal the encryption parameters to the second communication device and the third communication device, and a disconnection circuit configured to remove the communication device from the communication connection.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: June 19, 2012
    Assignee: Infineon Technologies AG
    Inventors: Andreas Schmidt, Norbert Schwagmann, Achim Luft, Michael Benkert
  • Patent number: 8201233
    Abstract: Methods and apparatus are provided to allow Internet Key Exchange (IKE) phase 1 keying materials to be periodically refreshed in a secure manner without requiring user interaction. A client and server perform authentication and key exchange during set up of a secure connection. A token is passed to the client by the server during or after the initial user authentication phase. The token is stored both at the client and at the server. Instead of requiring user credentials, the token can be used to securely prove the identity of the client.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: June 12, 2012
    Assignee: Cisco Technology, Inc.
    Inventors: Stephane Beaulieu, David Silverman, Scott Fanning
  • Patent number: 8195933
    Abstract: A method, system, apparatus, and computer program product are presented for managing digital certificates. When entities need to engage in a secure transaction or open a secure communication link, they may exchange digital certificates in order to provide a public key or reference information to a public key for the opposing entity, thereby requiring validation of a received certificate. Rather than construct a trust path for each validation event, hierarchical certifications and peer-to-peer cross-certifications among a set of certificate authorities are represented by a set of trust relations, and trust path information is generated using a transitive closure computation and an “all pairs shortest paths” computation over the set of trust relations and then incrementally updated as the set of trust relations changes. Computations related to trust paths can be delegated to a central agent in a trust web.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: June 5, 2012
    Assignee: International Business Machines Corporation
    Inventor: Messaoud Benantar
  • Patent number: 8189792
    Abstract: In one embodiment, the present invention includes a processor having logic to perform a round of a cryptographic algorithm responsive to first and second round micro-operations to perform the round on first and second pairs of columns, where the logic includes dual datapaths that are half the width of the cryptographic algorithm width (or smaller). Additional logic may be used to combine the results of the first and second round micro-operations to obtain a round result. Other embodiments are described and claimed.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: May 29, 2012
    Assignee: Intel Corporation
    Inventors: Brent Boswell, Kirk Yap, Gilbert Wolrich, Wajdi Feghali, Vinodh Gopal, Srinivas Chennupaty, Makaram Raghunandan
  • Patent number: 8180060
    Abstract: In the telemedical system securely sharing encryption keys for enabling secure exchange of the encrypted biological data between the measurement terminal and the server to prevent the data from being stolen by the malicious third party, a service key is transferred to the second adapter attached to a measurement terminal from the server via the first adapter attached to the management apparatus. First, the first adapter attached to the management apparatus receives the service key from the server. Next, the first adapter is temporarily detached from the management apparatus and is attached to the measurement terminal to store the symmetric key. The first adapter is detached from the measurement terminal, and is attached to the management apparatus again. The service key received in the first adapter is encrypted using the symmetric key, and the encrypted key is transmitted to the second adapter attached to the measurement terminal.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: May 15, 2012
    Assignee: Panasonic Corporation
    Inventors: Kazuhiro Aizu, Yosuke Tajika, Daisuke Kobayashi, Hiromichi Nishiyama, Masao Nonaka, Natsume Matsuzaki, Kaoru Yokota, Yuichi Futa
  • Patent number: 8165300
    Abstract: A system, method, and program product is provided that uses environments to control access to encryption keys. A request for an encryption key and an environment identifier is received. If the encryption key is not associated with the environment identifier, the request is denied. If they are associated, the system receives user-supplied environment authentication data items from a user. Examples of environment authentication data include passwords, user identifiers, user biometric data (e.g., fingerprint scan, etc.), smart cards, and the like. The system retrieves stored environment authentication data items from a secure (e.g., encrypted) storage location. The retrieved stored environment authentication data items correspond to the environment identifier that was received. The received environment authentication data items are authenticated using the retrieved stored environment authentication data items.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: April 24, 2012
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventor: David Carroll Challener
  • Patent number: 8160244
    Abstract: 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 and data may be securely routed between the client device and another device. The stateless hardware security module may support a limited set of key management operations to facilitate routing of information between the client device and another device. However, the stateless hardware security module does not need to maintain state information for the keys it maintains and/or uses. As a result, the stateless hardware security module may be advantageously integrated into a variety of client devices.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: April 17, 2012
    Assignee: Broadcom Corporation
    Inventor: Mark Buer
  • Patent number: 8160256
    Abstract: A key calculation method and a shared key generation method, the key calculation method including: generating two keys to perform a key calculation; calculating a first value based on coefficients having an identical coefficient value among coefficients included in each of the two keys; and performing a coordinates operation or an exponentiation operation based on the first value, wherein the calculating of the first value is performed with respect to each of coefficient values included in the two keys, excluding 0.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: April 17, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong Hyun Yi, Jung Hee Cheon, Taekyoung Kwon, Mun-Kyu Lee, Eunah Kim
  • Patent number: 8150039
    Abstract: A method and apparatus for securely booting software components in an electronic device to establish an operating environment are described herein. According to an aspect of the invention, software components are to be executed in sequence in order to establish an operating environment of a device. For each software component, a security code is executed to authenticate and verify an executable code image associated with each software component using one or more keys embedded within a secure ROM (read-only memory) of the device and one or more hardware configuration settings of the device. The security code for each software component includes a common functionality to authenticate and verify the executable code image associated with each software component. In response to successfully authenticating and verifying the executable code image, the executable code image is then executed in a main memory of the device to launch the associated software component.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: April 3, 2012
    Assignee: Apple Inc.
    Inventors: Joshua de Cesare, Dallas Blake De Atley, Jonathan Jay Andrews, Michael John Smith
  • Patent number: 8144874
    Abstract: A system and method comprising a computer useable medium having computer readable program code means embodied therein for authenticating and encrypting and decrypting information transferred over a public network between a client application program running in a client computer and a server application program running in a server computer and a directory service application program running in a server computer. A method for obtaining a session master key by an application from a server includes sending an open request to the server for the session master key and receiving a first reply by the application from the server with a first portion of the session master key. The first reply identifies a directory server from which a second portion of the session master key may be obtained. The application sends an open request to the directory server specified by the server in the first reply for the second portion of the session master key and receives it from the directory server.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: March 27, 2012
    Inventor: R. Paul McGough
  • Patent number: 8144877
    Abstract: A method for updating a key in an active state is disclosed according to the embodiments of the present invention. The method includes steps of: initiating a key update by a user equipment in the active state or a network side when a pre-defined condition is met; updating the key by the network side and the user equipment, and negotiating an activation time of the new keys. An apparatus for updating a key in an active state is also disclosed according to the present invention. With the present invention, the user equipment in an active state and the network side may actively initiate the key update procedure in different cases, thereby solving the problem concerning the key update for a session in an active state.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: March 27, 2012
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yanmei Yang, Min Huang
  • Patent number: 8145900
    Abstract: This disclosure relates to pairing of a different cryptographic key with each pointer in a data structure to form a crypto-pointer. The cryptographic key is used to encrypt the contents of all data stored at the physical location on the storage device indicated by the pointer. Preferably the only data accessible in an unencrypted form is contained in cells that are reachable from root-set crypto-pointers. Once the crypto-pointer associated with a particular memory cell is deleted, normally by overwriting or explicitly zeroing the crypto-pointer, the contents of the memory cell become inaccessible because the data stored at that cell is in encrypted form (cipher text) and the crypto-pointer that included the cryptographic key for decrypting the cipher text has been deleted from the system.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: March 27, 2012
    Assignee: Galois, Inc.
    Inventors: John Launchbury, Thomas Nordin
  • Patent number: 8135132
    Abstract: A system and method are described supporting secure implementations of 3DES and other strong cryptographic algorithms. A secure key block having control, key, and hash fields safely stores or transmits keys in insecure or hostile environments. The control field provides attribute information such as the manner of using a key, the algorithm to be implemented, the mode of use, and the exportability of the key. A hash algorithm is applied across the key and control for generating a hash field that cryptographically ties the control and key fields together. Improved security is provided because tampering with any portion of the key block results in an invalid key block. The work factor associated with any manner of attack is sufficient to maintain a high level of security consistent with the large keys and strong cryptographic algorithms supported.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: March 13, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Dale W. Hopkins, Susan Langford, Larry Hines, Ching-Hsuan Chen
  • Patent number: 8130964
    Abstract: A method and system for encrypting a first piece of information M to be sent by a sender [100] to a receiver [110] allows both sender and receiver to compute a secret message key using identity-based information and a bilinear map. In a one embodiment, the sender [100] computes an identity-based encryption key from an identifier ID associated with the receiver [110]. The identifier ID may include various types of information such as the receiver's e-mail address, a receiver credential, a message identifier, or a date. The sender uses a bilinear map and the encryption key to compute a secret message key gIDr, which is then used to encrypt a message M, producing ciphertext V to be sent from the sender [100] to the receiver [110] together with an element rP. An identity-based decryption key dID is computed by a private key generator [120] based on the ID associated with the receiver and a secret master key s.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: March 6, 2012
    Assignees: The Board of Trustees of the Leland Stanford Junior University, The Regents of the University of California, Davis
    Inventors: Dan Boneh, Matthew Franklin
  • Patent number: 8116450
    Abstract: A method for measuring trust in a transaction over a public key certificate network includes associating each edge KA?KB of an public key certificate network connecting two public keys KA and KB with a probability p that information about KB is reliable, and a confidence c that is a total dollar amount of transactions which have involved using edge KA?KB. One or more authentication paths are formed in the public key certificate network starting from public key KS and ending with a target public key KT. A limit l of an amount of insurance that an owner of KS is willing to provide to a user interested in a transaction with an owner of KT is calculated, and for each amount m<l, a premium for which the owner of KS is willing to sell insurance to the user for an amount of m is calculated.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: February 14, 2012
    Assignee: International Business Machines Corporation
    Inventors: Dakshi Agrawal, Charanjit Singh Jutla
  • Patent number: 8099367
    Abstract: In a method and arrangement for variable generation of cryptographic securities of communications in a host device, for cryptographic security of a communication for a first purpose a first signature is used and for cryptographic security of a communication for a second purpose a second signature is used, the signatures being differentiated from each other by the type of their generation. A cryptologic module has a number of logic circuits and a changeover switch and is arranged externally of the postal security device and is connected at its output with an information input of the postal security device that has a logic circuit that applies a digital signal algorithm to the output signal supplied by the output in order to generate a signature.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: January 17, 2012
    Assignee: Francotyp-Postalia AG & Co. KG
    Inventor: Gerrit Bleumer
  • Patent number: 8099592
    Abstract: A system and method for controlling data communications between a server and a client device, such as a mobile device. Embodiments relate generally to a technique where stop data is provided to the client device. This stop data can be transmitted (e.g. by the client device) to the server. When processed by the server, the stop data indicates to the server that at least some of the encrypted data received by the client device from the server was not decrypted using the second key (e.g. as may be the case when the second key has been deleted). Upon receiving the stop data, the server may, for example, withhold the transmission of data encrypted with the first key to the client device until the second key is restored on the client device. In one embodiment, the stop data is provided to the client device in an encoded (e.g. encrypted) form.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: January 17, 2012
    Assignee: Research In Motion Limited
    Inventors: David Bajar, Phillip Chi-Jim Luk, Michael Kenneth Brown, Darrell Reginald May
  • Patent number: 8081761
    Abstract: A communication encryption processing apparatus is provided in which a dedicated signal line is provided between a key management module and an encryption and decryption processing module to perform a key delivery via the dedicated signal line from the key management module to the encryption and decryption processing module, and as a result, transmission and reception of raw key data on a bus is no longer performed.
    Type: Grant
    Filed: August 1, 2007
    Date of Patent: December 20, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akihiko Yushiya
  • Patent number: 8065533
    Abstract: A method of and device for granting access to content on a storage medium, including obtaining cryptographic data from a property, such as a wobble, of the storage medium, reading helper data from the storage medium, and granting the access based on an application of a delta-contracting function to the cryptographic data and the helper data. The delta-contracting function allows the choice of an appropriate value of the helper data, such that any value of the cryptographic data which sufficiently resembles the original primary input value leads to the same output value. Substantially different values of the cryptographic data lead to different values of the output.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: November 22, 2011
    Assignee: Intrinsic ID B.V.
    Inventor: Johan Paul Maria Gerard Linnartz
  • Patent number: 8050405
    Abstract: Methods of securely communicating a message from a first terminal to a second terminal include generating a keypad including a random sequence of bits having a length L, encrypting the message at the first terminal using a bit string beginning at an offset O in the keypad, and transmitting the encrypted message and an indicator of the offset O to the second terminal. A communication terminal includes a controller, a communication module configured to establish a location-limited communication channel, and an encryption unit configured to store a keypad including a random sequence of bits having a length L, to encrypt an outgoing message using the keypad, and to decrypt an incoming message using the keypad.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: November 1, 2011
    Assignee: Sony Ericsson Mobile Communications AB
    Inventors: William O. Camp, Jr., Daniel P. Homiller
  • Patent number: 8045705
    Abstract: In computing point multiples in elliptic curve schemes (e.g. kP and sQ) separately using, for example, Montgomery's method for the purpose of combining kP+sQ several operations are repeated in computing kP and sQ individually, that could be executed at the same time. A simultaneous scalar multiplication method is provided that reduces the overall number of doubling and addition operations thereby providing an efficient method for multiple scalar multiplication. The elements in the pairs for P and Q method are combined into a single pair, and the bits in k and s are evaluated at each step as bit pairs. When the bits in k and s are equal, only one doubling operation and one addition operation are needed to compute the current pair, and when the bits in k and s are not equal, only one doubling operation is needed and two addition operations.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: October 25, 2011
    Assignee: Certicom Corp.
    Inventors: Adrian Antipa, Yuri Poeluev
  • Patent number: 8014529
    Abstract: In one embodiment, the invention provides a method for configuring a wireless device, so as to enable the wireless device to join a secured wireless network, by broadcasting a series of broadcast packets encoding a network configuration parameter (e.g., a shared secret key) from a computer coupled to a wireless access point to the wireless device. The information representing the network configuration parameter is encoded, not within the payload portion of the packet, but within the length of each broadcast packet in the series of broadcast packets. Accordingly, a wireless device that has not yet been configured to receive packets from the wireless access point can observe the information encoded in the length of each broadcast packet, and thereby decode the network configuration parameter and join the network.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: September 6, 2011
    Assignee: Eye-Fi, Inc.
    Inventors: Yuval Koren, Earl T. Cohen, Eugene M. Feinberg, Berend Ozceri
  • Patent number: 8009829
    Abstract: A method and system for deploying a suite of advanced cryptographic algorithms that includes: providing a legacy cryptographic interface that is associated with a legacy operating system and a legacy application, and supports a suite of legacy cryptographic algorithms; providing a suite of advanced cryptographic algorithms that includes one or more of an advanced asymmetric key algorithm, an advanced symmetric key algorithm, and/or an advanced hash function; providing an advanced cryptographic interface that is independent of the legacy operating system and the legacy application, backwards compatible with the legacy cryptographic interface, and capable of supporting the suite of advanced cryptographic algorithms; and transparently and automatically substituting the suite of advanced cryptographic algorithms for the legacy cryptographic algorithms through the invocation of the advanced cryptographic interface at the time of an initial performance of encrypting, hashing, digitally signing the hash of, decrypti
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: August 30, 2011
    Assignee: Spyrus, Inc.
    Inventors: Robert R. Jueneman, Duane J. Linsenbardt, John N. Young, William Reid Carlisle
  • Patent number: 7995761
    Abstract: A data providing system is provided which includes: a storage section which stores an encoded file obtained by encoding a data file to be distributed with a predetermined common key and an encoded information file obtained by encoding an information data file including information on the common key with a private key different from the common key; and a file transfer section which transfers the encoded file and the encoded information file from the storage section to external electronic device.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: August 9, 2011
    Assignee: Kyocera Mita Corporation
    Inventors: Sachiko Yoshimura, Takanao Kawai
  • Patent number: 7991162
    Abstract: A method and apparatus for accelerating scalar multiplication in an elliptic curve cryptosystem (ECC) over prime fields is provided. Multiplication operations within an ECC point operation are identified and modified utilizing an equivalent point representation that inserts multiples of two. Algebraic substitutions of the multiplication operations with squaring operations and other cheaper field operations are performed. Scalar multiplication can also be protected against simple side-channel attacks balancing the number of multiplication operations and squaring operations and providing novel atomic structures to implement the ECC operation. In addition, a new coordinate system is defined to enable more effective operation of ECC to multiprocessor environments.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: August 2, 2011
    Assignee: University of Ottawa
    Inventors: Patrick Longa, Ali Miri
  • Patent number: 7978856
    Abstract: Methods of managing a key cache are provided. One method may include determining whether a given key has previously been loaded to a trusted platform module (TPM), loading the given key to the TPM and generating a key cache object corresponding to the given key if the determining step determines the given key has not previously been loaded to the TPM and restoring the given key to the TPM based on the key cache object corresponding to the given key if the given key has previously been loaded. Another method may include extracting a key from a TPM if the TPM does not have sufficient memory to load a new key, the extracted key corresponding to a least frequently used key cache object within the TPM. Another method may include restoring a key to a TPM, the restored key having been previously loaded to and extracted from the TPM.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: July 12, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyung-min Cho, Jong-il Park
  • Patent number: 7961887
    Abstract: A content distribution system encrypts a content by using different session keys assigned to user systems, encrypts each of the session keys with a public key corresponding to a decryption key unique to each user system, generates, for a group of user identification information items, header information including the encrypted session keys, and a first vector which corresponds to a session key of the session keys and is assigned to arbitrary user identification information u in the group, the first vector being set such that an inner product of the first vector and a second vector concerning the user identification information u becomes equal to zjuv (where zj is a constant value of a session key sj assigned to the user identification information u, and v is group identification information to the group), and transmits the header information and one of the encrypted contents to the user systems.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: June 14, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Tatsuyuki Matsushita
  • Patent number: 7961885
    Abstract: In one embodiment, a system comprises JTAG functionality that implements at least a portion of a JTAG protocol. The JTAG functionality supports a test data in (TDI) line, a test data out (TDO) line, a test rest (TR) line, a test mode state (TMS) line, and a test clock (TCLK) line. The system further comprises a debug interface to communicatively couple the system to a debug device external to the system. The debug interface comprises a transmit (TX) line, receive (RX) line, and a clock (CLK) line. The system transmits data output by the JTAG functionality on the TDI input on the RX line of the debug interface and receives data from the debug device on the TX line of the debug interface and provides the received data to the JTAG functionality on the TDO line, TR line and the TMS line.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: June 14, 2011
    Assignee: Honeywell International Inc.
    Inventors: Edwin D. Cruzado, William J. Dalzell, Brian R. Bernier
  • Patent number: 7940930
    Abstract: A system for scrambling/descrambling packets of a stream of content, each packet having a must stay clear (MSC) section, the system including an input handler including a receiving module to receive the stream, a characteristic analyzer to analyze the stream in order to determine a data independent characteristic of each packet, and a scrambling /descrambling device operationally associated with the input handler, the scrambling/descrambling device including a receiving module to receive the data independent characteristic for each packet from the input handler, and an Initial Value module to determine an Initial Value for each packet as a function of the data independent characteristic of one of the packets being processed, wherein the scrambling/descrambling device is adapted to scramble and/or descramble the packets based on the Initial Value and a Control Word. Related apparatus and methods are included.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: May 10, 2011
    Assignee: NDS Limited
    Inventors: Chaim Shen-Orr, Eliphaz Hibshoosh, Yaacov Belenky, Yaakov (Jordan) Levy
  • Patent number: 7940935
    Abstract: A content playback apparatus reduces load concentration on a specific server apparatus that manages content keys of encrypted content, while protecting copyrights of the content. The content apparatus makes playback of content recorded in a recording medium sold possible after the specific server breaks down. A key acquisition control unit (204) reads a playback control information table (211) from a recording medium (102) via a reading unit (201). The key acquisition unit (204) acquires a rights key via a key acquisition intermediation unit (223) from an apparatus specified by an acquisition-destination type and a request-destination type that are stored in the playback control information table (211) and that corresponding to the content to be played. The key acquisition unit (204) generates a content key using the acquired rights key and, when required, a medium key recorded in a medium. A decryption unit (203) decrypts encrypted content using the content key.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: May 10, 2011
    Assignee: Panasonic Corporation
    Inventors: Tohru Nakahara, Ryuichi Okamoto, Masaya Yamamoto, Katsumi Tokuda, Masaya Miyazaki, Masayuki Kozuka
  • Patent number: 7933840
    Abstract: One embodiment of the invention enhances the security of electronic signatures during transmission. A peripheral device, which may be located remotely and separate from a host processing system, captures the signature. The peripheral device then binds the signature to the particular transaction record and transmits it to the host processing system. The host processing system validates or confirms the received signature before accepting the transaction. Binding the signature and record data together at the point-of-use reduces the likelihood that someone may be able to hack into the transmission medium, encrypted or not, and obtain the raw signature data. By binding or associating the signature and transaction record data together at the point-of-use, each transaction has a unique key, further foiling attempts at hacking. In various implementations, rather than associating the whole signature with the transaction record data, signature sample points or segments are encrypted with transaction record data.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: April 26, 2011
    Assignee: Topaz Systems, Inc.
    Inventor: Anthony E. Zank
  • Patent number: 7921283
    Abstract: A digital signature is applied to digital data in real-time. The digital signature serves as a mark of authenticity assuring a recipient that the digital data did in fact originate from an indicated source. The digital signature may be applied to any digital data, including video signals, audio signals, electronic commerce information, data pertaining to land vehicles, marine vessels, aircraft, or any other data that can be transmitted and received in digital form.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: April 5, 2011
    Assignee: Verizon Business Global LLC
    Inventor: David Scott Hayes
  • Patent number: 7920706
    Abstract: 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 cryptographic keys in the personal device 100. In response to the transferred data package, a backup data package is received by the secure processing point 150 from the personal device 100, which backup data package is the data package encrypted with a unique secret chip key stored in a tamper-resistant secret storage 125 of a chip 110 included in the personal device 100. The secure processing point 150 is arranged to store the backup data package, together with an associated unique chip identifier read from the personal device 100, in a permanent, public database 170.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: April 5, 2011
    Assignee: Nokia Corporation
    Inventors: Nadarajah Asokan, Niemi Valtteri
  • Patent number: 7904709
    Abstract: A system and method for controlling data communications between a server and a client device, such as a mobile device. Embodiments relate generally to a technique where stop data is provided to the client device. This stop data can be transmitted (e.g. by the client device) to the server. When processed by the server, the stop data indicates to the server that at least some of the encrypted data received by the client device from the server was not decrypted using the second key (e.g. as may be the case when the second key has been deleted). Upon receiving the stop data, the server may, for example, withhold the transmission of data encrypted with the first key to the client device until the second key is restored on the client device. In one embodiment, the stop data is provided to the client device in an encoded (e.g. encrypted) form.
    Type: Grant
    Filed: February 3, 2006
    Date of Patent: March 8, 2011
    Assignee: Research In Motion Limited
    Inventors: Dave Bajar, Philip Luk, Michael K. Brown, Darrell May
  • Patent number: 7899184
    Abstract: 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 understood to mean that an adversary cannot decrypt those captured encrypted messages that the user has decrypted prior the exposure. The recovery of the protocol means that the attacker at some point of time after the exposure cannot any more decrypt messages created after the exposure. The invention can be used e.g. in encrypted email communication. New to the current state of the art is that a message contains history data: a list of recently used public keys and their Diffie-Hellman counterparts.
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: March 1, 2011
    Assignee: Pisaramedia Oy
    Inventor: Pentti Kimmo Sakari Vataja
  • Patent number: 7894607
    Abstract: A system, method and media drive for selectively encrypting a data packet. The system includes an encryption key for use in encrypting the data packet, a verification data element derived from the encryption key, an encryption engine for selectively encrypting the data packet using the encryption key, and a verification engine in electronic communication with the encryption engine. The verification engine is configured to receive the encryption key and the verification data element, determine when the verification data element corresponds to the encryption key as received by the verification engine, and prohibit encryption of the data packet by the encryption engine when the verification data element does not correspond to the encryption key as received by the verification engine.
    Type: Grant
    Filed: March 10, 2006
    Date of Patent: February 22, 2011
    Assignee: Storage Technology Corporation
    Inventor: Alexander S. Stewart
  • Patent number: 7894606
    Abstract: 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 of the embedded device to obtain the security key for the embedded device. The security key is stored in the memory of the embedded device. The security key is used to establish secure connections with other devices.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: February 22, 2011
    Assignee: Panasonic Electric Works Co., Ltd.
    Inventor: Bryant Eastham
  • Patent number: 7865741
    Abstract: A system and method securely replicates a configuration database of a security appliance. Keys stored on an original configuration database of an original security appliance are organized as a novel key hierarchy. A replica or clone of the original security appliance may be constructed in accordance with a cloning technique of the invention. Construction of the cloned security appliance illustratively involves sharing of data between the appliances, as well as substantially replicating the key hierarchy on a cloned configuration database of the cloned appliance.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: January 4, 2011
    Assignee: NetApp, Inc.
    Inventors: Robert Paul Wood, Robert Jan Sussland