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7529929 |
System and method for dynamically enforcing digital rights management rules
A system and method for enforcing digital rights management (DRM) rules in a terminal, even when the requesting rendering application is already operating. Content, which may be encrypted, is...
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7526092 |
Rekey operation with multiplexing capability
A method of providing a protocol for rekeying between two stations is disclosed. The method can include providing a first set of messages for computing a new key and reserving an auxiliary storage...
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7526656 |
Encryption/decryption system and method for the same
An encryption/decryption system capable of supplying data only to a user making a request. A computer encrypts data with a common key, encrypts the common key with a public key, and transmits the...
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7526089 |
Device and method for controlling digital bidirectional communication
An interface block ( 11 ) converts the format of input downstream data (STRM). A CPU ( 12 ) receives the format-converted data (DIF) and realizes the MAC function. A TEK process block ( 13 )...
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7526087 |
Random number generator
A random number generator. The random number generator includes a noise source, a circuit controlling random current consumption, and a circuit generating random bits. A noise voltage output from...
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7523303 |
System and method for distributing digital works, apparatus and method for reproducing digital works, and computer program product
An editing apparatus generates a capsular work with usage conditions for each of plural usages and usage secret information. A ticket server apparatus issues a ticket containing a ticket key in the...
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7523307 |
Method for ensuring content protection and subscription compliance
A method for enforcing compliance in both the copy protect domain and service subscription domain for streamed multicast data. Each content is encrypted with a title key that itself is encrypted...
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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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7519816 |
Portable computing environment solution
The described systems, methods and data structures are directed to a portable computing environment. A communication link is established between a portable device and a host device. The portable...
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7519177 |
Method and system for processing a data set
A method and system for processing a data set. More particularly, the present invention provides a method and system for encrypting or decrypting a data set so that the data set remains entirely in...
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7519184 |
Wireless communication system
A small-scale wireless communication system offering advanced security level. An encryption key memory of an access point stores an encryption key list of a plurality of different encryption keys....
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7519179 |
Information transmission apparatus and method, information reception apparatus and method, and information-providing system
Described herein is an information transmission apparatus for encrypting and transmitting first data and second data, the information transmission apparatus including: encryption element for...
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7519836 |
Method and apparatus for the secure storage of audio signals
A method and apparatus for recording audio so that the recording can be authenticated as to both content and time of recording is provided. The system may be implemented as a central server that is...
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7516479 |
Data communicating apparatus and method for managing memory of data communicating apparatus
File systems of a plurality of service providers are allocated in a single memory area so that the service providers share a single information recording medium. In an initial state, an IC card...
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7516321 |
Method, system and device for enabling delegation of authority and access control methods based on delegated authority
A trusted authority delegates authority to a device. This delegation of authority is effected by providing a yet-to-be completed chain of public/private cryptographic key pairs linked in a...
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7516326 |
Authentication system and method
An authentication system and method for anonymous authentication of a data processing system from a group of data processing systems by a service provider are disclosed. A group key ( 110 ) is...
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7515730 |
Progressive image quality control using watermarking
The ability to remove a watermark from an encoded image by reversible watermarking opens the possibility of various novel applications. Several such applications are detailed. One permits different...
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7515717 |
Security containers for document components
Methods, systems, computer program products, and methods of doing business whereby document components are secured or controlled using “security containers” which encapsulate the components...
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7515715 |
Information security for aeronautical surveillance systems
A method and apparatus for encrypting a Mode-S extended squitter exploiting a provided key. The key includes a control key segment, an address key segment, a first message key segment, and a first...
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7516482 |
Secure hierarchical namespaces in peer-to-peer networks
A method and data structure are provided that enables name resolution via a hierarchical or chained lookup of delegated authorities independent of requiring IP addresses of the delegated...
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7512241 |
Method for generating pseudo-random keys
Provided is a method to generate sub-keys based on a main key in a case in which, each sub-key gives no information to recover the main key. The method has the steps of obtaining a first value by...
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7512240 |
Management of security key distribution
Security keys for the provision of a secure service such as content provision are generated in an ancestral hierarchy, so that invalidation of a key in the hierarchy results in a need to...
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7512972 |
Synchronizing for digital content access control
A method and apparatus for digital content access control comprises determining the occurrence of a synchronization event that triggers synchronization of information used by one or more content...
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7512234 |
Providing location data about a mobile entity
Location data about a mobile entity ( 20 ) is provided in encrypted form by a location server ( 79 ) to a recipient that is one of the mobile entity ( 20 ) or a service system ( 40 ) usable by the...
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7509682 |
Copy protection method and system for digital media
A copy protection method and a copy protection system are disclosed. The system includes a private key verifier receiving a media certificate that includes a private-key identification of a...
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7508938 |
Method and apparatus for generating and using a tamper-resistant encryption key
The present invention increases the difficulty of reverse engineering sensitive information protected by an encryption algorithm by increasing the difficulty associated with tracing the code that...
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7505955 |
Information terminal and content storage/playback method
An information terminal according to this invention includes a storage means having a first storage area which is accessible from an external terminal, and a second storage area which is...
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7506164 |
Automated key management system and method
A system and method for automatic key and certificate management is disclosed. In particular, a key store in a base computer contains both new and previously viewed cryptographic keys. When a...
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7505944 |
Method and system of payment by electronic cheque
An offline payment method includes communicating a commitment value calculated by an electronic check medium to a terminal configured to receive a payment from the electronic check medium. The...
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7505584 |
Contents management method, contents management apparatus, and recording medium
An apparatus generates first shared information that is shared by the apparatus and a recording medium by performing a first bilateral authentication. The apparatus encrypts overwrite data that is...
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7502467 |
System and method for authentication seed distribution
In one embodiment of a user authentication system and method according to the invention, a device shares a secret, referred to as a master seed, with a server. The device and the server both derive...
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7502931 |
Method and device for authenticating a user on a remote server
A method is provided for authenticating a user ( 10 ) on a remote server 16 a , 16 b , 16 c of a network 18 , comprising the steps of receiving an authentication request from said remote server ...
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7502754 |
Secure web server system for unattended remote file and message transfer
A system provides for the secure exchanging files with a remote transfer server over an open network such as the Internet. The system comprises a database with file transfer tables, a hypertext...
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7502475 |
Method and system for secure key generation
Certain aspects of the invention for producing a secure key may comprise a secure key generator that receives a first, second and third input keys and utilizes these keys to generate a first output...
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7502930 |
Secure communications
A method of providing secure communications between a first and a second communications unit comprising a key exchange between the communications units resulting in a shared secret key, the′ key...
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7499547 |
Security authentication and key management within an infrastructure based wireless multi-hop network
A system and method of security authentication and key management scheme in a multi-hop wireless network is provided herein with a hop-by-hop security model. The scheme adapts the 802.11r key...
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7499551 |
Public key infrastructure utilizing master key encryption
The disclosure encrypts and decrypts data using public key infrastructure with and allows an authorized third party to access and decrypt the encrypted data as required without requiring private...
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7500101 |
Recording/reproduction device, data processing device, and recording/reproduction system
A device key 46 is implemented on a drive 4 side. To securely transmit the device key 46 to a host 5, the device key 46 is encrypted with a bus key. The host 5 side decrypts the device...
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7499550 |
System and method for protecting a title key in a secure distribution system for recordable media content
A title key protection system includes a title key with recordable media content; storage in a repository is not required. The title key is decrypted when needed by a clearinghouse, and then...
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7496749 |
Method and apparatus for decrypting encrypted data transmitted wirelessly by updating a key-table
A method and an apparatus for decrypting encrypted data transmitted wirelessly by updating a key-table comprises a receiver in wireless communication with a sender. The method includes receiving an...
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7496203 |
Quantum-key distribution method between a plurality of users or groups
There is provided a quantum-key distribution method between a plurality of users or groups. A center prepares a predetermined number of entangled states consisting of qubits equal to the number of...
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7496199 |
Method of controlling access to cryptographic resources
The cryptographic resources are supplied by at least one cryptographic source having a specific access interface. The application is presented with a mutualized interface substantially independent...
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7496758 |
Method and apparatus for protecting an exponentiation calculation by means of the chinese remainder theorem (CRT)
In a method for protecting an exponentiation calculation by means of the Chinese remainder theorem, in particular the combining step ( 16 ), wherein the Garner combination algorithm is preferably...
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7492904 |
QKD system detector autocalibration based on bit-error rate
In a quantum key distribution (QKD) system, a method of autocalibrating the gating of a single-photon detector (SPD) unit is disclosed. The method includes exchanging photon signals (P 1 , P 2 ) to...
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7493487 |
Portable computing environment
The described systems, methods and data structures are directed to a portable computing environment. A communication link is established between a portable device and a host device. The portable...
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7493497 |
Digital identity device
A digital identity device for uniquely identifying legal entities. The digital identity device is used for secure electronic communications.
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7490246 |
Method for encryption of data based on an iteration of a stored encryption key
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 from a set of...
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7490248 |
Method for reencryption of a database
A method for encryption of the content in a database, the method including the steps of detecting that a predetermined time period has elapsed, generating an unexpired encryption key, associating...
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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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7486795 |
Method and apparatus for key management in distributed sensor networks
In a distributed sensor network, a method of key management is carried out in several phases, particularly key pre-distribution phase, shared key discovery phase, and as needed, a path key...
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