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7600121 |
Message security
To provide a secure, effective but simple message handling, a method is provided for transmitting an electrical message, from a first user having a first terminal to a second user having a second...
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7587049 |
Active stabilization of a one-way QKD system
A one-way stabilized QKD system ( 10 ) that utilizes a control signal (CS) and a quantum signal (QS) that travel the same path through the system from a first QKD station (Alice) to a second QKD...
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7586835 |
Apparatus for generating 2D spreading code and method for the same
An apparatus for generating a 2D spreading code and method for the same are proposed. The apparatus for generating the 2D spreading code includes a column counter, a row counter, a codeword...
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7580524 |
Method and apparatus for synchronizing the emitter and the receiver in an autocompensating quantum cryptography system
In a method and apparatus for synchronizing the receiver and the emitter in an autocompensating quantum cryptography system it is allowed to one of the stations (for example the emitter) to define...
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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...
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7532876 |
Communication system and associated method of performing mutual authentication
A reception intensity measuring unit measures a reception intensity of a radio wave received by a radio reception unit under control of a connection control unit. When it is judged that the...
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7529371 |
Replaceable sequenced one-time pads for detection of cloned service client
Authentication of cellular telephone device by providing a first one-time pad cryptological table to a security server which has multiple sequenced One Time Pad value entries including a previous...
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RE40708 |
Dual encryption protocol for scalable secure group communication
A logical tree structure and method for managing membership in a multicast group provides scalability and security from internal attacks. The structure defines key groups and subgroups, with each...
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7522727 |
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...
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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...
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7502472 |
Encryption system and method for encrypting/decrypting sensitive data
An encryption system ( 1 ) and a method for encrypting and decrypting sensitive data during a data interchange between at least two electronic appliances communicating with one another. The...
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7490240 |
Electronically signing a document
Facilitating communication using a digital signature includes: receiving user input data (UID); generating a first key as a deterministic function of the UID; clearing the UID; generating a second...
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7484107 |
Method for selective encryption within documents
The present invention allows the user (author or creator) of a document to specify that certain portions of a document be selected for encryption while other portions of the document remain...
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7480383 |
Apparatus and method for scrambling high-rate data
The apparatus and method for scrambling high-rate data is disclosed. The apparatus includes a first storing unit for storing a transport stream (TS) inputted from an external device; a common key...
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7471795 |
Information transmission system
A sending apparatus generates a first initial vector, a second initial vector, and an encryption key in response to a pseudo random number. Original information is encrypted into cipher information...
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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...
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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...
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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...
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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...
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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...
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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,...
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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...
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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...
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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 1 st scrambling protocol and the scrambling of the...
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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...
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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...
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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...
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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 )...
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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...
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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....
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7237110 |
Authentication system, authentication apparatus, authentication target apparatus, authentication method, method of being authenticated, program and information recording medium
An observation unit of an authentication apparatus and an observation unit of an authentication target apparatus observe a radio wave from a common radio star at a common observation time. A...
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7225331 |
System and method for securing data on private networks
A system and method for protecting data transmitted across a private network is disclosed. A secure channel is established so that the client computer can securely transmit a password to the server...
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7181431 |
Interactive information services system and associated method for facilitating purchasing transactions
A method and system are provided to permit a network operator to capture transaction data relating to transactions between a subscriber and a service provider that are conducted via a...
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7178030 |
Electronically signing a document
A method of electronically signing a document includes initializing a user, including generating an asymmetric key pair including a private signing key and a public signing key, and storing the...
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7158640 |
Method and apparatus for re-synchronization of a stream cipher during handoff
A method and apparatus for re-synchronizing a stream cipher during soft handoff. Transmitted quasi-secret keying information is used with a secret key to reinitialize a stream cipher generator...
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7151946 |
Controller for reducing latency in a group communication network
A method and apparatus for reducing perceived latency in a group communication network provides for receiving a request from a user of a communication device wishing to initiate a group call,...
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7151832 |
Dynamic encryption and decryption of a stream of data
Dynamic varying of encrypting of a stream of data at an encryption unit based on data content is disclosed. The dynamic varying of the encrypting, which can be responsive to passage of a predefined...
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7133525 |
Communication security apparatus and method of using same
Encryption and decryption sites are initially assigned identical one time Vernam like pads, (OTP), and each site is provided with identical compendiums of byte modifying instructions identified by...
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7133522 |
Method and apparatus for encryption of data
A method for encryption and decryption of data items is provided by defining a cipher key based on variables in a Chaotic Equation. The method includes selecting a Chaotic Equation ( 110 ) from a...
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7124434 |
Information transmission system, and information sending apparatus and information receiving apparatus used therein
A receiver sends a first random number to a transmitter. The transmitter generates a sync signal in response to the first random number sent from the receiver. The transmitter embeds the sync...
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7120696 |
Cryptographic communications using pseudo-randomly generated cryptography keys
An apparatus and method for generating pseudo-random cryptographic keys in a cryptographic communications system, whereby, given a common set of initializing configuration data, the pseudo-random...
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7110546 |
Synchronization of session keys
In a communication system for a secure transfer of information from a source device to a sink device in a communication session in the form of a plurality of packets from the source device to the...
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7069031 |
Communication device for providing security in a group communication network
A method and apparatus for providing security in a group communication network provides for receiving an encryption key, encrypting media for transmission to a controller using the received...
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7043022 |
Packet order determining method and apparatus
A transmitter adds packet transmission order information to transmitted packets using a forward error device ( 416 ) and a masking device ( 420 ). The masking device ( 420 ) receives ordering masks...
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7039185 |
Method and system for securing a printhead in a closed system metering device
A closed system meter that secures the link between the accounting device and printer utilizing a Linear Feedback Shift Register (LFSR) based stream encryption is provided. The accounting device...
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7035411 |
Encryption method and apparatus encrypting and adding signature information to qubits
Arbitrary quantum information is input. The information of a quantum two-state system is acquired as a qubit by performing a computation in consideration of a physical system. The acquired qubit is...
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7024392 |
Method for controlling use of database content
Method for providing database content usage. The database content can be a digital work having one or more rights associated therewith. The method can be effected within a system having at least...
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7006633 |
Global encryption system
A system and method for encryption, transmission and decryption of data based on a publicly or other wide area broadcast random number sequence. Encryption is by a selected subsequence from the...
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7000106 |
Methods and apparatus for kernel mode encryption of computer telephony
Disclosed is a computer-readable medium containing program instructions for configuring a first computer so that a first telephony client on the first computer may securely communicate with a...
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6996724 |
Secret key generating method, common key generating method, encryption method, cryptographic communication method and cryptographic communication system
At the time when generating a secret key of each entity by using each divided identification information (ID division vector) obtained by dividing identification information (ID vector) of each...
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