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7617537 |
Communication system and its method and communication apparatus and its method
This invention relates to a communication system including a first apparatus having a first storage medium, and a second apparatus for transmitting data to the first apparatus, the second apparatus...
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7616766 |
Data division method and device using exclusive or calculation
A plurality of original partial data are generated by dividing the original data by the prescribed processing unit bit length, a plurality of random number partial data each having a length less...
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7600123 |
Certificate registration after issuance for secure communication
Techniques for registering certificates after the issuance of the certificates are provided. A service provider securely registers a client's identity and its certificate without depending on or...
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7599890 |
Content data storage
A memory card ( 110 ) includes a memory ( 1415 ) to store encrypted content data, a license hold unit ( 1440 ) to store at least a portion of license information distributed by a distribution...
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7599493 |
Asymmetric key pair having a kiosk mode
Techniques for providing different levels of access based upon a same authentication factor are provided. A first message is received that is transformed with a first portion of a split private...
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7596697 |
Technique for providing multiple levels of security
Techniques for authentication are provided. A first authentication request transformed with a private portion of a first type split private key is received. A first user is authenticated for a...
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7571315 |
Method and apparatus to assign trust to a key
A method includes determining whether a key is traceable to one of a set of keys associated with a trusted source and determining whether the key is identified in a list of compromised keys. If the...
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7564977 |
System, method and program product for anonymous transfer of messages
A final agent of the message provides a first encryption key to a first agent, interposed between a message sender and the final agent. The first agent but not the final agent knows an identity of...
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7551740 |
Weighted secret sharing and reconstructing method
A weighted secret sharing and reconstructing method includes encoding the secret using a predetermined code, producing voices so that different weights are assigned to errors in an error vector...
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7539315 |
Encrypted communication system, key delivery server thereof, terminal device and key sharing method
Provided is a method for updating a group key in a highly secure manner and at high speed. A method includes: a step of making subscriber terminals ( 20 ) perform a part of decryption of an...
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7522732 |
Method for controlling the distribution of software code updates
A method is described for controlling the distribution of a software code update for an embedded software application on a device. The method includes the steps of assigning an asymmetric key pair...
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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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7519827 |
Provisioning and use of security tokens to enable automated test equipment
Automated test equipment (ATE) is provided with a plurality of hardware components, at least two of which provide a common test feature. The ATE is also provided with program code to access a...
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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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7512976 |
Method and apparatus for XSL/XML based authorization rules policy implementation
A system and method for implementing XSL/XML based authorization rules policy on a given set of data. An authorization rules engine is created which uses authorization rules defined in XSL to...
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7509116 |
Selective data exchange with a remotely configurable mobile unit
A system for remotely tracking a mobile unit is presented. The system includes a computer connected to a data network, mobile units collecting data and transmitting the data to the computer, and a...
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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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7493661 |
Secure transmission system
A method and apparatus for transferring a message securely from a sender to a recipient over a network and includes at each transfer: creating a message; retrieving the public key of the recipient...
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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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7493429 |
Communication of information via a side-band channel, and use of same to verify positional relationship
The present invention provides for trusted side-band communications between components in a computer system, so that use of the system bus may be avoided. Two components may be connected by means...
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7492895 |
Data recording method and apparatus, data reproducing method and apparatus, and data recording and/or reproducing system
Even though data transmitted between a data processing apparatus and disc recording and/or reproducing apparatus is monitored, copying the data is effectively prevented and the data can be...
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7477740 |
Access-controlled encrypted recording system for site, interaction and process monitoring
A high level of security for access to recorded information is provided by a method which includes provisioning of a trusted/protected communication linkage such as a tamper-resistant or tamper...
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7471792 |
Key agreement system, shared-key generation apparatus, and shared-key recovery apparatus
Provided is a content distribution system that prevents different keys to be derived between an encryption apparatus and a decryption apparatus. A random-number generating unit 112 d , in an...
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7457412 |
System and method for authenticating an operating system to a central processing unit, providing the CPU/OS with secure storage, and authenticating the CPU/OS to a third party
In accordance with certain aspects, a computer system has a central processing unit (CPU) and an operating system (OS), the CPU having a pair of private and public keys and a software identity...
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7454618 |
System and methods for transmitting encrypted data with encryption key
A method for transmitting information between a transmitter station and a plurality of receiving stations in which encrypted information is transmitted from the transmitter station to the receiver...
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7454021 |
Off-loading data re-encryption in encrypted data management systems
Described is a solution for maintaining the security of encrypted data despite a compromised private key by using a re-encryption process that does not require decryption of the encrypted data. The...
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7444512 |
Establishing trust without revealing identity
A method, system, and apparatus are provided for establishing trust without revealing identity. According to one embodiment, values in a first proof corresponding to a first statement are...
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7441115 |
Method for verifying a digital signature
The invention provides a method for verification having a structure that reflects reliability of a signature history properly for a hysteresis signature used for verification based on the signature...
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7418736 |
Network security system
Security is provided in a network system. A message is received from a user, which message requires authentication of the user. An authentication message is sent indicating the identity of the user...
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7418474 |
Secure identification system
Methods and apparatus are described which provide secure interactive communication of text and image information between a central server computer and one or more client computers located at remote...
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7415115 |
Method and system for disaster recovery of data from a storage device
Aspects of the invention provide a method and system for securely managing the storage and retrieval of data. Securely managing the storage and retrieval of data may include receiving a first...
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7397917 |
Method and apparatus for generating a cryptographic key
A method and apparatus are provided for generating a cryptographic key from multiple data sets each related to a respective association of a trusted party and user identity. The cryptographic key...
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7382884 |
Key management for content protection
A method for content access control operative to enable authorized devices to access protected content and to prevent unauthorized devices from accessing protected content, the method comprising:...
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7379551 |
Method and system for recovering password protected private data via a communication network without exposing the private data
Securely roaming private data from one client computer to another in a network. A home client application generates a first key in response to a password, and encrypts designated private data as a...
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7379546 |
Method for XZ-elliptic curve cryptography
Given a set of elliptic curve points defined over a field F(p) and represented in projective coordinate, a method is presented which allows the embedding of data bits in both the X-coordinate and...
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7366915 |
Digital license with referral information
A digital license corresponds to encrypted digital content and includes a content key for decrypting same. The content key is encrypted and is decryptable by a decryption key available only to the...
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7359518 |
Distribution of secured information
Secured information is stored on a server accessible to a network. A first access component that is required to permit use of the secured information is distributed to a delegate. In the absence of...
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7346774 |
Encrypted key cache
A file that has been encrypted using a symmetric key and that has a corresponding access control entry with the symmetric key encrypted using the public key of a public/private key pair can be...
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7346171 |
Network system, terminal, and method for encryption and decryption
Provides encryption methods, and systems and apparatus corresponding decryption method systems and apparatus in which terminals belonging to a subset selected as a recipient group can collaborate...
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7333616 |
Approach for managing access to messages using encryption key management policies
Controlling access to disseminated messages includes implementing one or more key management policies that specify how various encryption keys are maintained and in particular, when encryption keys...
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7327847 |
Method for distributed computation of RSA inverses in asynchronous networks
The present invention discloses a method and system for distributed computation of an RSA inverse in an asynchronous network among participating network devices. The RSA inversion is...
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7325133 |
Mass subscriber management
An authentication and mass subscriber management technique is provided by employing a key table derived as a subset of a larger key pool, a network edge device, and authentication tokens attached...
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7313697 |
Method for authentication
A method for authentication and identification uses different keys for the prover and the verifier, but on the other hand dispenses with the utilization of long number modulo arithmetic by the use...
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7302709 |
Key-based secure storage
A one-way hash function is applied to a seed supplied by an application to produce a hashed seed that is used to generate the application storage key. A one-way hash function is applied to a seed...
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7296156 |
System and method for SMS authentication
The disclosed invention allows security of configuration SMS messages through the use of encryption computed with the International Mobile Equipment Identity (IMEI) as a key. Particularly, a text...
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7295674 |
On-line randomness test for detecting irregular pattern
The present invention is a method and apparatus for testing random numbers generated by a random number generator in real time. As a series of random numbers are generated, a number of bits that...
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7295671 |
Advanced encryption standard (AES) hardware cryptographic engine
A cryptographic method and related implements the Rijndael—AES encryption standard. In one improvement, the decryption round keys are generated on a round by round basis from the final Nk round...
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7277544 |
Local content security system
The present invention is a system for securing broadcasting content locally at receiving stations that may be remote to a broadcaster. Embodiments of this invention implement controllable and...
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7272229 |
Digital work protection system, key management apparatus, and user apparatus
In a system composed of a recording apparatus that records digitized content such as a movie, or a reproduction apparatus that reproduces the digitized content, and a recording medium, a media key...
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7269261 |
Key escrow systems
The storage and retrieval of cryptographic key materials from a storage database utilizes a limited one-way function to create computational barriers. The limited one-way function is asymmetric in...
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