Having Compression Patents (Class 380/269)
  • Patent number: 10394814
    Abstract: A data processing method provides an improvement in speed of obtaining, in response to a computer search query from one or more computing devices, a particular compressed data chunk that may include a particular data value that is digitally stored in a large data file.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: August 27, 2019
    Assignee: Palantir Technologies Inc.
    Inventor: Nicholas White
  • Patent number: 10396978
    Abstract: A method for encryption, decryption, or encryption and decryption of data in a crypto device having at least one crypto core may include: generating a tweak value corresponding to block data, which is placed at a random position from which the encryption, decryption, or encryption and decryption starts, from among sequential block data; and/or performing the encryption, decryption, or encryption and decryption from the block data using the tweak value. A method for encryption, decryption, or encryption and decryption of block data may include: generating a tweak value corresponding to the block data at a random position; and/or performing the encryption, decryption, or encryption and decryption of the block data using the tweak value.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: August 27, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hong-Mook Choi, Heonsoo Lee, Sang-Hyun Park
  • Patent number: 10268380
    Abstract: Methods, devices and systems enhance compression and decompression of data values when they comprise a plurality of semantically meaningful data fields. Compression is sometimes not applied to each data value as a whole, but instead to at least one of the semantically meaningful data fields of each data value, and in isolation from the other ones. Data fields can be organized that share the same semantic meaning together to accelerate compression and decompression as multiple compressors and decompressors can be used in parallel. A system can be used where methods and devices are tailored to perform compression and decompression of the semantically meaningful data fields of floating-point numbers after first partitioning further at least one of said data fields into two or a plurality of sub-fields to increase the degree of value locality and improve compressibility of floating-point values.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: April 23, 2019
    Assignee: ZEROPOINT TECHNOLOGIES AB
    Inventors: Angelos Arelakis, Per Stenström
  • Patent number: 10205802
    Abstract: A transmission system and a transmission method are provided. The transmission system comprises a compressor, an intermediate terminal, and a decompressor. The compressor transmits an initial Internet Protocol package (IP package). The initial IP package comprised an initial forwarding table. The initial forwarding table records at least one candidate context identification (CID). The intermediate terminal receives the IP package and selects the at least one candidate CID different from an intermediate CID recorded in the intermediate terminal, so as to create an intermediate forwarding table. And, the intermediate terminal transmits an intermediate IP package. The decompressor receives the intermediate IP package. The decompressor selects the at least one candidate CID different from a decompressor CID recorded in the decompressor to be a target CID.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: February 12, 2019
    Assignee: INSTITUTE FOR INFORMATION INDUSTRY
    Inventor: Wen-Kang Jia
  • Patent number: 10158651
    Abstract: An example client device includes a processor configured construct a key to be used to encrypt or decrypt data of a communication session between the client device and a server device, partition the key into a plurality of key partitions, send data representative of the key and a location of the client device to the server device, send data representative of each of the plurality of key partitions to a respective key verification server device of a plurality of key verification server devices, and after receiving an indication from the server device that the key has been verified using data representative of the key, the location of the client device, and the plurality of key partitions, encrypt or decrypt data exchanged with the server device using the key.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: December 18, 2018
    Assignee: Wells Fargo Bank, N.A.
    Inventors: Basil F. Nimry, Nicholas Gillis
  • Patent number: 10055171
    Abstract: Embodiments of compression and formatting of data for data storage systems are disclosed. In some embodiments, a data storage system can compress fixed sized data before storing it on a media and format obtained variable sized compressed data for storing on the media that typically has fixed size storage granularity. One or more modules compress the incoming host data and create an output stream of fixed sized storage units that contain compressed data. The storage units are stored on the media. Capacity, reliability, and performance are thereby increased.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: August 21, 2018
    Assignee: Western Digital Technologies, Inc.
    Inventor: Robert L. Horn
  • Patent number: 9898194
    Abstract: An object is to solve all of the following problems caused when a volatile register and a non-volatile register are used as registers in a processor: degradation of the integrity of data stored in the non-volatile register; loss of data security due to the processor and a non-volatile memory device that are provided apart from each other; and slow data processing speed due to wiring delay or the like caused by these devices provided apart from each other. When data maintained in the volatile register is stored in the non-volatile register before supply of power supply voltage is stopped, the data is encrypted by an encryption circuit and stored in a non-volatile memory device that is provided separately from the processor. Then, the data stored in the non-volatile register is compared with the compressed and encrypted data stored in the non-volatile memory device.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: February 20, 2018
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yutaka Shionoiri, Tomoaki Atsumi, Masaaki Hiroki
  • Patent number: 9749449
    Abstract: A more secure TCP/IP protocol stack is provided having an enhanced transport layer. Encryption and decryption logic is arranged on the transmission side and on the reception side for processing a payload of a transport layer protocol, such as TCP or UDP. By employing this enhanced transport layer, a cryptograph process communication can be realized by dissolving various kinds of restrictions which a conventional IPsec or SSL possesses without affecting upper layer processing, and, at the same time, maintaining compatibility with the IP layer.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: August 29, 2017
    Assignee: INTO CO., LTD.
    Inventors: Hirotsugu Ozaki, Keiko Ogawa
  • Patent number: 9667425
    Abstract: A secure demand paging system includes a processor operable for executing instructions, an internal memory for a first page in a first virtual machine context, an external memory for a second page in a second virtual machine context, and a security circuit coupled to the processor and to the internal memory for maintaining the first page secure in the internal memory.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: May 30, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Steven Goss, Gregory Remy Philippe Conti, Narendar M. Shankar, Mehdi-Laurent Akkar, Aymeric Vial
  • Patent number: 9654140
    Abstract: Methods and systems for multi-dimensional run-length encoding of data are provided. In one embodiment, a method for multi-dimensional run-length encoding of an unprocessed data file is provided. The method includes obtaining an admission key and determining a traversal path within a virtual multi-dimensional shape based on the admission key. The method also includes transforming unprocessed data of the unprocessed data file into a plurality of compressed data segments. Also, the method includes plotting the plurality of compressed data segments onto a plurality of data points along the traversal path to obtain a plurality of secured data segments. Further, the method includes generically sorting the plurality of secured data segments to obtain a plurality of generically sorted data segments, and writing the plurality of generically sorted data segments into a processed data file.
    Type: Grant
    Filed: August 27, 2016
    Date of Patent: May 16, 2017
    Assignee: Scured2 Corporation
    Inventors: R. Daren Klum, Thomas Neafus, Andrew Jeffrey Kluge, William Paul Kluge
  • Patent number: 9578029
    Abstract: The invention consists of a new registration and authentication protocol for between a Mobile Node and a Home Agent. The new protocol uses a novel messaging sequence to request registration, authentication and authorization of the Mobile Node when it is located on a foreign network, and the novel protocol will avoid some of the standard registration and authentication protocol messages in order to eliminate the problems associated with re-transmission errors.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: February 21, 2017
    Assignee: Apple Inc.
    Inventors: Mohamed Khalil, Ahmad Muhanna, Haseeb Akhtar
  • Patent number: 9577822
    Abstract: Methods and systems are provided for securely authenticating data of an integrated circuit. By authenticating data having keystream blocks inserted between ciphertext portions, it becomes more difficult to mount successful authentication-based attacks.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: February 21, 2017
    Assignee: Altera Corporation
    Inventor: Bruce B. Pedersen
  • Patent number: 9448738
    Abstract: Embodiments of compression and formatting of data for data storage systems are disclosed. In some embodiments, a data storage system can compress fixed sized data before storing it on a media and format obtained variable sized compressed data for storing on the media that typically has fixed size storage granularity. One or more modules compress the incoming host data and create an output stream of fixed sized storage units that contain compressed data. The storage units are stored on the media. Capacity, reliability, and performance are thereby increased.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: September 20, 2016
    Assignee: Western Digital Technologies, Inc.
    Inventor: Robert L. Horn
  • Patent number: 9442890
    Abstract: Processing for generating a plurality of pieces of distributed data from original data or processing for restoring original data from a plurality of pieces of distributed data is performed safely and quickly. A distribution and restoration apparatus 200 generates a plurality of pieces of distributed data SD1 to SD3 by dividing original data OD into a plurality of divided blocks DB1 to DB16 and performing an operation of exclusive OR using divided blocks of different combinations. A combination including divided blocks used in common in a plurality of pieces of distributed data and a combination including divided blocks used only in specific distributed data are present in combinations of divided blocks in each piece of distributed data. Therefore, the distribution and restoration apparatus 200 can generate a plurality of pieces of safe distributed data having high information entropy at high speed.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: September 13, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Masakatsu Matsuo
  • Patent number: 9383802
    Abstract: A method of operating an integrated circuit that includes a plurality of registers may include receiving a sleep mode request for the integrated circuit. The sleep mode request may be a control signal received with control circuitry on the integrated circuit. The plurality of registers may be configured to operate as a scan chain when the sleep mode request is received. Integrated circuit state information that are stored in the plurality of registers may be retrieved by operating the scan chain and stored in a memory module. The integrated circuit may be placed in a sleep mode. Placing the integrated circuit in the sleep mode may reduce power consumption of the integrated circuit.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: July 5, 2016
    Assignee: Altera Corporation
    Inventors: Jun Pin Tan, Kiun Kiet Jong
  • Patent number: 9374220
    Abstract: The present invention relates to a technique which provides a function of compressed encryption large pieces of plaintext information in a single ciphertext in order to improve a space efficiency of the encryption data which occupies most of a storage space to design an efficient SHE technique which is a base of the FHE technique design. More specifically, the present invention relates to a technique which is designed to improve a structure in which only one bit is encrypted/decrypted in the technique of the prior art to encrypt/decrypt multiple bit information to improve the space efficiency for storing a ciphertext.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: June 21, 2016
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Taek Young Youn, Nam Su Jho, Jung Yeon Hwang, Ku Young Chang
  • Patent number: 9369447
    Abstract: Various embodiments of the invention achieve optimal data security by adding a security layer to data at the point of generation. Some embodiments add a security feature to data that controls or configures a device at a physical interface.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: June 14, 2016
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Hal Kurkowski, David Richard Gruetter, Carlton Michael Haight
  • Patent number: 9335950
    Abstract: Embodiments of multiple stream compression and formatting of data for data storage systems are disclosed. In some embodiments, a data storage system can compress multiple streams of fixed sized host data before storing it on a media and format obtained variable sized compressed data for storing on the media that typically has fixed size storage granularity. One or more modules compress the incoming host data and create multiple output streams of fixed sized storage units that contain compressed data. The storage units are stored on the media. Capacity, reliability, and performance are thereby increased.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: May 10, 2016
    Assignee: Western Digital Technologies, Inc.
    Inventor: Robert L. Horn
  • Patent number: 9094429
    Abstract: Systems and methods for processing encoded messages within a wireless communications system are disclosed. A server within the wireless communications system determines whether the size of an encoded message is too large for a wireless communications device. If the message is too large, the server removes part of the message and sends an abbreviated message to the wireless device, together with additional information relating to processing of the encoded message, such as, for example, hash context values, that assist the wireless communications device in verifying the abbreviated message.
    Type: Grant
    Filed: August 10, 2004
    Date of Patent: July 28, 2015
    Assignee: BlackBerry Limited
    Inventors: Michael K. Brown, Michael S. Brown, Neil P. Adams, Michael G. Kirkup, Herbert A. Little
  • Patent number: 9065612
    Abstract: In a wireless transmission system that transmits and receives a modulated signal between a transmitter and a receiver that are coupled through a wireless transmission path, the transmitter includes a spectrum division filter bank dividing the modulated signal and generating a plurality of sub-spectrum signals each of which is arranged at a predetermined frequency position, and subjects the plurality of sub-spectrum signals arranged in spectra to a direct spectrum division transmission, and the receiver includes a spectrum combination filter bank extracting the plurality of sub-spectrum signals from the received signals arranged in spectra and subjected to the direct spectrum division transmission to combine the sub-spectrum signals into an original modulated signal.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: June 23, 2015
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Fumihiro Yamashita, Junichi Abe, Kiyoshi Kobayashi
  • Patent number: 9049486
    Abstract: An information processing apparatus includes: an acquisition target content determination unit that determines an acquisition target content item which is a target acquired by a content acquisition unit among related content items related to a reference content item, on the basis of processing performance of the content acquisition unit which acquires various content items via a communication network and can communicate with a content presentation control unit which performs a control so as to present the reference content item; and an acquisition processing unit that causes the content acquisition unit to acquire the acquisition target content item.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: June 2, 2015
    Assignee: Sony Corporation
    Inventor: Yoshinori Ohashi
  • Patent number: 8942678
    Abstract: In a MBMS system, a base station generates a data control task and a first header control task and second header control task corresponding to each terminal device for a MBMS function module. Each header control task synchronizes a compression state with an associated terminal device and transmits only header information to the terminal device, and the data control task distributes content information to the terminal device separately from header information.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventor: Daitarou Furuta
  • Patent number: 8934630
    Abstract: A method, system and computer program product are disclosed for compressing encrypted data, wherein the data is encrypted by using a block encryption algorithm in a chained mode of operation, and the encrypted data is comprised of a set of N encrypted blocks, C1 . . . CN. In one embodiment, the method comprises leaving block CN uncompressed, and compressing all of the blocks C1 . . . CN in a defined sequence using a Slepian-Wolf code. In an embodiment, the data is encrypted using an encryption key K, and the compressing includes compressing all of the blocks C1 . . . CN without using the encryption key. In one embodiment, the compressing includes outputting the blocks C1 . . . CN as a set of compressed blocks CmprC1 . . . CmprCN-1, and the method further comprises decrypting CN to generate a reconstructed block {tilde over (X)}n, and decrypting and decompressing the set of compressed blocks using {tilde over (X)}n.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: January 13, 2015
    Assignee: International Business Machines Corporation
    Inventors: Camit Hazay, Ashish Jagmohan, Demijan Klinc, Hugo M. Krawczyk, Tal Rabin
  • Patent number: 8934631
    Abstract: According to one embodiment, a decompressing apparatus includes an input unit, a calculating unit, a first selecting unit, and a decompressing unit. The input unit inputs additional data, which is obtained based on trace expression data in which an element in a subgroup of a multiplicative group of a finite field is trace-expressed and affine expression data in which the trace expression data is affine-expressed, and the trace expression data. The calculating unit calculates a plurality of solutions of simultaneous equations derived by the trace expression data. The first selecting unit selects any of a plurality of items of affine expression data in which the element is affine-expressed based on the additional data, the affine expression data being found from the solutions. The decompressing unit decompresses the selected affine expression data to the element.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: January 13, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshikazu Hanatani, Taichi Isogai, Hirofumi Muratani, Tomoko Yonemura
  • Patent number: 8924743
    Abstract: Encryption techniques for securing data in a data cache are generally disclosed. Example methods may include one or more of reading the cache to identify data, determining whether the data is encrypted to identify previously unencrypted data and/or previously encrypted data, and encrypting selectively at least a portion of the previously unencrypted data. The present disclosure also generally relates to a computer system data processor configured to read a cache to identify data, determine whether the read data is encrypted, and encrypt selectively at least a portion of the previously unencrypted data. The present disclosure also generally relates to computer accessible mediums containing computer-executable instructions for data encryption upon execution of the instructions by a data processor. The instructions may configure the data processor to perform procedures that read the cache to identify data, determine whether the data is encrypted, and selectively encrypt data determined as unencrypted.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: December 30, 2014
    Assignee: Empire Technology Development LLC
    Inventors: Thomas Martin Conte, Andrew Wolfe
  • Patent number: 8843457
    Abstract: There is realized a data conversion device that performs generation of a hash value with improved analysis resistance and a high degree of safety. There are provided a stirring processing section performing a data stirring process on input data; and a compression processing section performing a data compression process on input data including data segments which are divisions of message data, the message data being a target of a data conversion. Part of multi-stage compression subsections is configured to perform a data compression process based on both of output of the stirring processing section and the data segments in the message data. There is provided such a configuration that the stirring process is executed at least on fixed timing of a compression processing round of plural rounds and thus, there is realized a data conversion device that performs generation of a hash value with improved analysis resistance and a high degree of safety.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: September 23, 2014
    Assignee: Sony Corporation
    Inventors: Taizo Shirai, Kyoji Shibutani, Shiho Moriai, Toru Akishita, Tetsu Iwata
  • Patent number: 8819452
    Abstract: A method begins with a processing module obtaining data to store and determining whether substantially similar data to the data is stored. When the substantially similar data is not stored, the method continues with the processing module generating a first encryption key based on the data, encoding the first encryption key into encoded data slices in accordance with an error coding dispersal storage function, and storing the encoded data slices in a dispersed storage network (DSN) memory. The method continues with the processing module encrypting the data using an encryption key of the substantially similar data in accordance with an encryption function to produce encrypted data, compressing the encrypted data in accordance with a compression function to produce compressed data, storing the compressed data when the substantially similar data is stored.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: August 26, 2014
    Assignee: Cleversafe, Inc.
    Inventors: S. Christopher Gladwin, Kumar Abhijeet, Greg Dhuse, Jason K. Resch, Gary W. Grube, Timothy W. Markison
  • Patent number: 8811611
    Abstract: Methods and apparatus involve two keys to decode data that are generated during original encoding of the data. The keys are stored on computing devices separate from one another, and the encrypted data, which maintains security until such time as the original data requires decoding. Because the keys can be relatively large, its stored form may have padding bits to align with the file form of the encoded data. Representative keys include a dictionary corresponding to symbols representing the data and a weighted path decoder that correlates the symbols of the dictionary to underlying original bits. A “fast approximation” of compression of current data involves using information obtained from an earlier compression of similar data. Creating the two keys for the original data can also include creating a master key for decoding a plurality of later-encoded files. A second key also works in conjunction with the master key during decoding.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: August 19, 2014
    Assignee: Novell, Inc.
    Inventor: Craig N. Teerlink
  • Patent number: 8793510
    Abstract: Systems and methods for encrypting a plaintext logical data object for storage in a storage device operable with at least one storage protocol, creating, reading, writing, optimization and restoring thereof. Encrypting the plaintext logical data object comprises creating in the storage device an encrypted logical data object comprising a header and one or more allocated encrypted sections with predefined size; encrypting one or more sequentially obtained chunks of plaintext data corresponding to the plaintext logical data object thus giving rise to the encrypted data chunks; and sequentially accommodating the processed data chunks into said encrypted sections in accordance with an order said chunks received, wherein said encrypted sections serve as atomic elements of encryption/decryption operations during input/output transactions on the logical data object.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: July 29, 2014
    Assignee: International Business Machines Corporation
    Inventors: Chaim Koifman, Nadav Kedem, Avi Zohar
  • Patent number: 8782436
    Abstract: A method and system for encrypting a plaintext logical data object for storage in a storage device operable with at least one storage protocol, creating, reading, writing, optimization and restoring thereof. Encrypting the plaintext logical data object comprises creating in the storage device an encrypted logical data object comprising a header and one or more allocated encrypted sections with predefined size; encrypting one or more sequentially obtained chunks of plaintext data corresponding to the plaintext logical data object thus giving rise to the encrypted data chunks; and sequentially accommodating the processed data chunks into said encrypted sections in accordance with an order said chunks received, wherein said encrypted sections serve as atomic elements of encryption/decryption operations during input/output transactions on the logical data object.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: July 15, 2014
    Assignee: International Business Machines Corporation
    Inventors: Chaim Koifman, Nadav Kedem, Avi Zohar
  • Patent number: 8766827
    Abstract: Parallel compression is performed on an input data stream by processing circuitry. The processing circuitry includes hashing circuitry, match engines, pipeline circuitry and a match selector. The hashing circuitry identifies multiple locations in one or more history buffers for searching for a target data in the input data stream. The match engines perform multiple searches in parallel for the target data in the one or more history buffers. The pipeline circuitry performs pipelined searches for multiple sequential target data in the input data stream in consecutive clock cycles. Then the match selector selects a result from the multiple searches and pipelined searches to compress the input data stream.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: July 1, 2014
    Assignee: Intel Corporation
    Inventors: Andrew Milne, Sailesh Bissessur, Quinn W. Merrell, Lokpraveen B. Mosur
  • Patent number: 8731190
    Abstract: A system for storing encrypted compressed data comprises a processor and a memory. The processor is configured to determine whether an encrypted compressed segment has been previously stored. The encrypted compressed segment was determined by breaking a data stream, a data block, or a data file into one or more segments and compressing and then encrypting each of the one or more segments. The processor is further configured to store the encrypted compressed segment in the event that the encrypted compressed segment has not been previously stored. The memory is coupled to the processor and configured to provide the processor with instructions.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: May 20, 2014
    Assignee: EMC Corporation
    Inventor: Christopher R. Lumb
  • Patent number: 8705742
    Abstract: In a first data compression process, a compressed code of an input symbol is generated in accordance with a compression dictionary selected on the basis of P symbols immediately preceding the input symbol, and a (P+1)K+1-th compressed code is encrypted to generate a compressed and encrypted code. Then, compressed and encrypted data comprising compressed and encrypted codes and other compressed codes is output. In a second data compression process, a bit string is added to the head of compression target data, and a compressed code of an input symbol is generated in accordance with a compression dictionary selected on the basis of a bit string or a symbol immediately preceding the input symbol. Then, a plurality of compressed codes are alternately output to different output destinations.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: April 22, 2014
    Assignee: Fujitsu Limited
    Inventor: Noriko Itani
  • Patent number: 8688621
    Abstract: Systems and methods for information compression. In a first method embodiment, a computer implemented method for compressing information includes finding a closest match entry of a dictionary to a data block, the dictionary stored in computer usable media. A logical exclusive OR combination of the closest match entry and the data block is performed to form a spatial difference vector identifying locations wherein the data block differs from the closest match entry. An information difference vector comprising differences between the data block and the closest match entry is formed. A compressed data block comprising the spatial difference vector, the information difference vector and a reference to the closest match entry is produced. The compressed data block is characterized as being smaller than the data block.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: April 1, 2014
    Inventor: Shakeel Mustafa
  • Patent number: 8683571
    Abstract: A system and method for authenticating a user in a secure computer system. A client computer transmits a request for a sign-on page, the secure computer system responds by transmitting a prompt for a first user identifier, and the client computer transmits a request including a first identifier, a second identifier stored in an object stored at the client computer and a plurality of request header attributes. A server module authenticates the first and second user identifiers, and compares the transmitted plurality of request header attributes with request header attributes stored at the computer system and associated with the first and second user identifiers. If the first and second user identifiers are authenticated, and if a predetermined number of transmitted request header attributes match stored request header attributes, the server software module transmits a success message, and the user is allowed to access the secure computer system.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: March 25, 2014
    Assignee: Keycorp
    Inventors: Onesimo Zapata, Susan E. Zielinski, Deana M. Flannery
  • Patent number: 8675874
    Abstract: A compressing unit compresses an element on an algebraic torus into affine representation according to a compression map. A determining unit determines whether a target element on the algebraic torus to be compressed is an exceptional point representing an element on the algebraic torus that cannot be compressed by the compression map. The compressing unit generates, when it is determined that the target element is the exceptional point, a processing result including exceptional information indicating that the target element is the exceptional point, and generates, when it is determined that the target element is not the exceptional point, a processing result including affine representation obtained by compressing the target element according to the compression map.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: March 18, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hirofumi Muratani, Tomoko Yonemura, Atsushi Shimbo, Kenji Ohkuma, Taichi Isogai, Yuichi Komano, Kenichiro Furuta, Yoshikazu Hanatani
  • Patent number: 8666079
    Abstract: A method includes receiving data which has been encoded according to a first higher complexity protection scheme and compressed. The method also includes decompressing the data. The method also includes decoding the data according to the first higher complexity protection scheme using a first higher complexity key. The method also includes encoding at least the first portion of the data according to a second higher complexity protection scheme using a second higher complexity key. The method also includes encoding at least a second portion of the data according to a lower complexity protection scheme using a lower complexity key.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: March 4, 2014
    Assignee: Broadcom Corporation
    Inventors: Chad William Kendall, Narendra Sankar
  • Patent number: 8572390
    Abstract: A method for transmitting data, a receiving method, related devices, and an aircraft equipped with the devices. The method includes determining an authentication word of the data; processing the data to obtain processed data; and transmitting the processed data on a transmission channel.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: October 29, 2013
    Assignee: Airbus Operations S.A.S.
    Inventors: Agnes Leclercq, Cecile Colle-Morlec
  • Patent number: 8532287
    Abstract: An information processing system and a method for use therewith, an information processing apparatus and a method for use therewith, and a program which are capable of decrypting desired portions of encrypted data are provided. Of packets 211 through 216 constituting a bit stream of layered-encoded image data 201 according to JPEG 2000, the packets 211 through 213 are each encrypted independently of the packets 214 through 216 which are also encrypted each. This produces encrypted split data 262 with the resolution at level zero (corresponding to R0) and encrypted split data 263 with the resolution at level one (corresponding to R1). The header (ranging from SOC to SOD) of layered-encoded image data 201 is appropriated for a header 261, followed by encrypted split data 262 and 263 and an EOC 264, in that order, the whole data array constituting data 251 that is output as the definitive encrypted data. This invention is particularly applicable to image delivery apparatus.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: September 10, 2013
    Assignee: Sony Corporation
    Inventor: Hiroshi Mizuno
  • Patent number: 8520855
    Abstract: A configuration for encapsulating data that is unreadable after a predetermined timeout. To encapsulate data a random data key is generated and split into shares. A threshold number of shares are needed to reconstruct the key. The shares are stored at random locations within one or more networks. Each location is configured to delete the stored data after a predetermined time period. Encapsulated data is created by creating a vanishing data object (VDO) comprising the encrypted data, and data sufficient to locate at least a threshold number of key shares from their stored locations. The VDO becomes inaccessible after enough shares of the data are deleted such that the data key cannot be restored. However, if prior to timeout a sufficient number of data key shares are located and retrieved the data key can be reconstructed. The reconstructed data key is then used to decrypt the original data.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: August 27, 2013
    Assignee: University of Washington
    Inventors: Tadayoshi Kohno, Roxana Geambasu, Henry M. Levy
  • Patent number: 8516275
    Abstract: In a data structure of a multimedia file format, a movie box and a media data box are provided. In each box, a non-encrypted size field, a non-encrypted type field and box data field are provided. In box data of the movie box, information data regarding multimedia data is stored. The multimedia data is encrypted and stored in box data of the media data box. The information data is obtained by referring to the container in the movie box. This information data is held as encryption and encoding information data. By referring to the information data, a data unit of the encrypted multimedia data in the media data box is obtained, and the unit data is decrypted.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: August 20, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Jun Sato, Toru Terauchi
  • Patent number: 8509440
    Abstract: A network component comprising at least one processor configured to implement a method comprising deriving a Master Session Key (MSK) using a secret key and at least one parameter obtained from an Extensible Authentication Protocol (EAP) sequence, deriving a first Pairwise Master Key (PMK) and a second PMK from the MSK, authenticating with a home gateway (HG) using the first PMK, and authenticating with an end point using the second PMK. Included is an apparatus comprising a node comprising an access controller (AC) and a protocol for carrying authentication for network access (PANA) Authentication Agent (PAA), wherein the AC is configured to manage authentication for a UE, and wherein the PAA is configured to implement a PANA to forward authentication information related to the UE.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: August 13, 2013
    Assignee: Futurwei Technologies, Inc.
    Inventor: John Kaippallimalil
  • Patent number: 8503679
    Abstract: A method and system for securely communicating information via a low bandwidth channel uses encryption that adds comparatively little overhead to the size of the transmission. This method and system efficiently take advantage of the properties of public key cryptography, a shared secret, a traffic key from the shared secret, an abbreviated initialization vector, and an abbreviated whole message signature. The information and the whole message signature are encrypted using the traffic key with a stream cipher.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: August 6, 2013
    Assignee: The Boeing Company
    Inventor: Larry Bugbee
  • Patent number: 8411859
    Abstract: A method for determining the entropy of a noise source providing a bit flow, a method and a device for generating a bit flow, including parallelizing the bit flow to obtain first words over a first number of bits, applying to the successive words a compression function, and evaluating a second number of bits over which the compression function provides its results, the second number representing the number of useful bits in the first words.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: April 2, 2013
    Assignee: STMicroelectronics S.A.
    Inventors: Yannick Teglia, Pierre-Yvan Liardet
  • Patent number: 8380683
    Abstract: There is realized a data conversion device that performs generation of a hash value with improved analysis resistance and a high degree of safety. There are provided a stirring processing section performing a data stirring process on input data; and a compression processing section performing a data compression process on input data including data segments which are divisions of message data, the message data being a target of a data conversion. Part of multi-stage compression subsections is configured to perform a data compression process based on both of output of the stirring processing section and the data segments in the message data. There is provided such a configuration that the stirring process is executed at least on fixed timing of a compression processing round of plural rounds and thus, there is realized a data conversion device that performs generation of a hash value with improved analysis resistance and a high degree of safety.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: February 19, 2013
    Assignee: Sony Corporation
    Inventors: Taizo Shirai, Kyoji Shibutani, Shiho Moriai, Toru Akishita, Tetsu Iwata
  • Patent number: 8311212
    Abstract: A data processing method comprises the following steps: determining a first result data word from a first input data word and a first secret data word; obtaining a first compressed data word from the first result data word or the first input data word using a compression algorithm; determining a second result data word from a second input data word and a second secret data word; obtaining a second compressed data word from the second result data word using the compression algorithm; comparing the first compressed data word and the second compressed data word.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: November 13, 2012
    Assignee: Oberthur Technologies
    Inventors: Christophe Giraud, Hugues Thiebeauld de la Crouee
  • Patent number: 8300823
    Abstract: Described is a process for encrypting and compressing data for storage by computing systems. A data stream received by a computing system is separated into data chunks for storage on a storage device using a data layout format. Each data chunk is examined and if possible, compressed to produce a compressed data chunk. Whether or not the data chunk can be compressed, the data chunk is encrypted and stored on the storage device in addition to metadata that describes the data chunk. When reading the stored data chunk from the storage device, the metadata identifies the starting location of the stored data chunk and provides metadata information to the computing system for decryption and decompression processing.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: October 30, 2012
    Assignee: NetApp, Inc.
    Inventors: Hristo Bojinov, Yuval Frandzel, Robert Paul Wood
  • Patent number: 8300824
    Abstract: Data is encrypted by receiving a plurality of bits associated with a communications flow and compressing at least a portion of the bits in order to produce a plurality of sub-frames. The sub-frames may be assembled into a superframe and a stream cipher may be applied to the superframe in order to generate an encrypted packet.
    Type: Grant
    Filed: April 8, 2004
    Date of Patent: October 30, 2012
    Assignee: Cisco Technology, Inc.
    Inventors: David A. McGrew, Malcolm M. Smith
  • Patent number: 8275126
    Abstract: An apparatus for hash cryptography has a hardware structure that is capable of providing both secure hash algorithm (SHA)-1 hash calculation and SHA-256 hash calculation. The apparatus for hash cryptography generates a plurality of first message data corresponding to a plurality of first rounds when the SHA-1 hash calculation is performed and generates a plurality of second message data corresponding to a plurality of second rounds when the SHA-256 hash calculation is performed by using one memory, one first register, one XOR calculator, and one OR calculator, calculates a message digest by the SHA-1 hash calculation by using the plurality of first message data when the SHA-1 hash calculation is performed, and calculates a message digest by the SHA-256 by using the plurality of second message data when the SHA-256 hash calculation is performed.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: September 25, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Moo Seop Kim, Young Soo Park, Ji Man Park, Young Sae Kim, Hong Il Ju, Sung Ik Jun
  • Patent number: 8271801
    Abstract: A method, apparatus and a data storage device are provided for implementing data confidentiality and integrity of data stored in overlapping, shingled data tracks on a recordable surface of a storage device. A unique write counter is stored for each zone written to the recordable surface of the storage device. An encryption key is used together with the write counter information and a logical block address to encrypt each sector being written, and to decrypt all sectors being read. An individual sector is decrypted, obtaining the write counter information and reading the data sector. A message authentication code is stored for each zone. All sectors of the zone are read to perform integrity check on a sector.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: September 18, 2012
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventor: Cyril Guyot