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| Number | Title | Issue Date |
| 8184812 | Secure computing device with monotonic counter and method therefor A secure computing device (14) includes a secure processing section (30) having a tamper detection circuit (58) and a monotonic counter (68). The tamper detection circuit (58) detects an event which suggests that the trust associat... | 05/22/2012 |
| 8098822 | Secure communication system and method using shared random source for key changing Apparatus for use by a first party for key management for secure communication with a second party, said key management being to provide at each party, simultaneously remotely, identical keys for said secure communication without transferring said keys over any comm... | 01/17/2012 |
| 8050405 | Shared key encryption using long keypads 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 ... | 11/01/2011 |
| 8005219 | Data decryption apparatus and data encryption apparatus A data decryption apparatus that decrypts encrypted data, includes a first data-receiving unit that receives a first data set, in which information on an encryption specification is embedded, through a first communication path; a time-information obtaining unit that... | 08/23/2011 |
| 8000476 | Data encryption/decryption method, and device A method of enciphering data which is applicable to cipher-transmission of digital information data, in which the HD-SDI signal DHS is subjected to enciphering process using common key data DEY which is common to encipherment and decipherment to produce enciphered H... | 08/16/2011 |
| 7991158 | Secure messaging Secure authentication and messaging for mobile online transactions are performed by a secure messaging platform. The secure messaging platform may include a token coupled to a mobile device, or a mobile device alone. The token enables secure access, and client and s... | 08/02/2011 |
| 7957531 | Method and apparatus for detection of loss of cipher synchronization Detecting loss of stream cipher synchronization between a transmitter and a receiver in a video processing system may be achieved by receiving, by the receiver, an encrypted video frame from the transmitter, obtaining an encrypted value for a selected pixel in the e... | 06/07/2011 |
| 7881472 | Quantum key distribution method and communication apparatus In a quantum key distributing method of the present invention, a communication apparatus on a reception side performs error correction using parity check matrixes for an LDPC code that have an extremely high error correction ability. In the quantum key distributing ... | 02/01/2011 |
| 7822203 | Method, apparatus, and program for processing information An information processing apparatus decrypts, using meta data, encrypted data obtained by encrypting stream data including successive frames according to an encryption method in which, when the stream data is sequentially encrypted on a frame-by-frame basis, a key u... | 10/26/2010 |
| 7801307 | Method of symmetric key data encryption A method of symmetric key encryption involves using a composition of transformations leading to an enhanced homophonic substitution, wherein the mapping of characters varies depending on the sequence of characters in the message text. In carrying out the method, enc... | 09/21/2010 |
| 7627121 | Apparatus, system and method for detecting a loss of key stream synchronization in a communication system An apparatus, system and method provides an out-of-synchronization detection by using a network layer checksum. A process operating at an upper layer verifies that a checksum embedded in a network layer header is correct before encrypting and transmitting a data pac... | 12/01/2009 |
| 7570766 | Transparently embedding non-compliant data in a data stream Systems, methods, and data structures for transparently embedding non-compliant data in a data stream are described. One method includes embedding random encryption/decryption information into an MEPG multimedia, video, or audio stream transparently to an MPEG decod... | 08/04/2009 |
| 7512238 | Method and apparatus for detection of loss of cipher synchronization Detecting loss of stream cipher synchronization between a transmitter and a receiver in a video processing system may be achieved by receiving, by the receiver, an encrypted video frame from the transmitter, obtaining an encrypted value for a selected pixel in the e... | 03/31/2009 |
| 7466824 | Method and system for encryption of streamed data Method and system for encrypting streamed data employing fast set-up single use keys and self-synchronization. A transmitting handset produces a bitstream of voice data containing the session key and encrypted by an encryption signal based upon the session key. A re... | 12/16/2008 |
| 7440570 | Method and apparatus for remote digital key generation A method and apparatus that uses tha dynamics of chaotic system for the remote generation of a digital key, for use in any encryption algorithm. After initialization, the dynamics of a chaotic system are allowed to generate the 0 and 1 bits of a key bistream. An ini... | 10/21/2008 |
| 7434052 | Method and device for producing an encrypted payload data stream and method and device for decrypting an encrypted payload data stream In a method for producing an encrypted method payload data stream comprising a header and a block containing encrypted payload data, a payload data key for a payload data encryption algorithm for encrypting payload data is generated. The payload data is encrypted us... | 10/07/2008 |
| 7433473 | Data transmission method between a broadcasting center and a multimedia unit The aim of this invention is to propose a flexible solution to the risk represented by the interception of data by an unauthorized party during the transmission of said data between a broadcast center and a specialized decryption/decompression circuit such as is use... | 10/07/2008 |
| 7424116 | Method and apparatus for providing authentication in a communication system A method includes receiving an authentication request from a mobile station (401) and determining whether to forward the request to an authentication agent. When it is determined to forward the request, the request is forwarded to the authentication agent ( | 09/09/2008 |
| 7401223 | Authentication chip for authenticating an untrusted chip A trusted authentication chip for use in authenticating an untrusted authentication chip; the trusted authentication chip including a random number generator, a symmetric encryption function and two secret keys for the function, a signature function and a test funct... | 07/15/2008 |
| 7369661 | Method and apparatus for detection of loss of cipher synchronization Detecting loss of stream cipher synchronization between a transmitter and a receiver in a video processing system may be achieved by receiving, by the receiver, an encrypted video frame from the transmitter, obtaining an encrypted value for a selected pixel in the ... | 05/06/2008 |
| 7370212 | Issuing a publisher use license off-line in a digital rights management (DRM) system A publishing user publishes digital content and issues to itself a corresponding digital publisher license to allow itself to render the published digital content. The publishing user is supplied with a publishing certificate from a digital rights management (DRM) s... | 05/06/2008 |
| 7369662 | Maintaining end-to-end synchronization on a telecommunications connection A method and an arrangement maintain end-to-end synchronization on a telecommunications connection transmitting data in frames substantially in real time and using synchronized end-to-end encryption, wherein at least a part of the telecommunications connection is a ... | 05/06/2008 |
| 7370111 | System, protocol and related methods for providing secure manageability A system, protocol and related methods for providing secure manageability are generally described. In this regard, a communication protocol is introduced comprising an authentication protocol, responsive to an initialization event in a host device, to authenticate a... | 05/06/2008 |
| 7366917 | System and method for accessing discrete data A method for accessing discrete data includes transmitting a write command to a memory, determining whether each data following a header of the file needs to be encrypted according to a data format of a file that is to be written into the memory, transmitting the fi... | 04/29/2008 |
| 7366103 | Seamless roaming options in an IEEE 802.11 compliant network A communication protocol that provides load balancing and/or test pattern information between devices is described. A first embodiment of the protocol provides such information via a data frame that is transmitted a definitive time after a special DTIM beacon is tra... | 04/29/2008 |
| 7362864 | Framing of transmit encoded data and linear feedback shifting Framing transmit encoded output data begins by determining a scrambling remainder between scrambling of an input code word in accordance with a 1st scrambling protocol and the scrambling of the input code word in accordance with an adjustable scrambling p... | 04/22/2008 |
| 7339892 | System and method for dynamic control of data packet fragmentation threshold in a wireless network In a wireless network system having a wired backbone network, one or more access points (APs), and one or more wireless units (WUs), a technique wherein an AP automatically determines a factor indicative of the error(s) occurring in the transmissions of one or more ... | 03/04/2008 |
| 7319758 | Electronic device with encryption/decryption cells In an electronic component including a two-way bus through which data elements travel between peripherals and a central processing unit at the rate of a clock signal, the central processing unit and at least one of the peripherals each includes a data encryption/dec... | 01/15/2008 |
| 7317799 | Cryptographic key distribution using key folding Methods, computer-readable media, and apparati for securely distributing a cryptographic key (C) from a first party(s) to a second party(s). A method embodiment of the present invention comprises the steps of combining (steps 1 and 2) the cryptographic... | 01/08/2008 |
| 7313236 | Methods and apparatus for secure and adaptive delivery of multimedia content Techniques for securely and adaptively delivering multimedia content. It is assumed that a set of alternate access units for each time slot is obtained. Then, the encryption stream index of each access unit from the set of alternate access units of the previous time... | 12/25/2007 |
| 7298850 | Encrypting keypad module An encrypting keypad module (30) comprising a keypad (40) and an encryption unit (42) is described. The encryption unit (42) includes an interpreter (56) for receiving a file (150) containing data and instructions for proces... | 11/20/2007 |
| 7296289 | Setting or changing an access condition for an access management apparatus and method of a portable electronic device An access management apparatus receives a command message having setting and changing functions, performs corresponding processing, and transmits results. A checking unit checks the presence/absence of a data element to be accessed. Access is permitted based on look... | 11/13/2007 |
| 7289630 | Counter initialization, particularly for radio frames A method for protecting traffic in a radio access network connected to at least two core networks. The method includes maintaining a core-network-specific authentication protocol and a radio-bearer-specific ciphering process, and generating, for each ciphering proce... | 10/30/2007 |
| 7280495 | Reliable broadcast protocol in a wireless local area network A protocol for acknowledging receipt of a multicast or broadcast frame by a wireless unit is described. One embodiment, an Eavesdrop Unicast frame is created for use in a wireless network operated in accordance with IEEE 802.11. The Eavesdrop Unicast frame allows th... | 10/09/2007 |
| 7280982 | System and method for a fee address system A system relating to a fee address is described. A method of directing mail to a public mailbox, determining a fee based upon the preferences of the mail recipient, receiving the fee and forwarding the mail to a private mailbox is also provided. Many different types... | 10/09/2007 |
| 7277477 | Zero overhead back channel for adaptive transmit filter updates in SerDes transceivers A method and system that communicates adaptive transmit-side filter updates between a receiver and transmitter inserts additional versions of control codes into a back channel for encoding updates. Since the control codes are required in the back channel, no additio... | 10/02/2007 |
| 7272231 | Encrypting data for access by multiple users A method for protecting data for access by a plurality of users. A server encrypts data using a master key and a symmetric encryption algorithm. For each authorized user, a key encryption key (KEK) is derived from a passphrase, and the master key is encrypted using ... | 09/18/2007 |
| 7263523 | Method and apparatus for a web application server to provide for web user validation An apparatus for and method of utilizing an internet terminal coupled to the world wide web to access an existing proprietary data base management system having a dialog-based request format. The user request is received by a web server from the world wide web and c... | 08/28/2007 |
| 7251729 | Authentication method for establishing connection between devices An authentication method for establishing a connection between devices that want to communicate data in a communication environment using communication specification such as Bluetooth is provided. In the authentication method, it is determined whether the authentica... | 07/31/2007 |
| 7246237 | Method and device for the generation of several channels in an IFF type system A method of interrogation/response in an IFF type Mode 5 communications system comprises at least the following steps: modulating the header of an interrogation message by using an orthogonal or substantially orthogonal function; detecting the modulation function us... | 07/17/2007 |
