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Class 380/260 - Symmetric key synchronization


Subclass of Class 380 - Cryptography
Definition: Subject matter including transmission of a signal for generating
No. of patents: 176
Last issue date: 05/22/2012


1          
NumberTitleIssue Date
8184812Secure 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
8098822Secure 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
8050405Shared 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
8005219Data 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
8000476Data 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
7991158Secure 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
7957531Method 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
7881472Quantum 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
7822203Method, 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
7801307Method 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
7627121Apparatus, 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
7570766Transparently 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
7512238Method 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
7466824Method 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
7440570Method 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
7434052Method 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
7433473Data 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
7424116Method 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
7401223Authentication 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
7369661Method 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
7370212Issuing 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
7369662Maintaining 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
7370111System, 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
7366917System 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
7366103Seamless 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
7362864Framing 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
7339892System 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
7319758Electronic 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
7317799Cryptographic 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
7313236Methods 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
7298850Encrypting 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
7296289Setting 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
7289630Counter 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
7280495Reliable 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
7280982System 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
7277477Zero 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
7272231Encrypting 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
7263523Method 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
7251729Authentication 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
7246237Method 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
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