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Document Title |
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7624274 |
Decreasing the fragility of duplicate document detecting algorithms
In a signature-based duplicate detection system, multiple different lexicons are used to generate a signature for a document that comprises multiple sub-signatures. The signature of an e-mail or...
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7624272 |
Platform information for digital signatures
An integrity signature may provide information about a platform used to create a digital signature. The value of a digital signature may be related to the integrity and trustworthiness of the...
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7614047 |
Change indication for a service offering
Illustrative embodiments provide a computer-implemented method for indicating a change in a service offering. The computer-implemented method generates a token representative of a state of the...
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7613918 |
System and method for enforcing a security context on a downloadable
A method for computer security, including receiving content including potentially malicious executable code (“CODE-A”), intended for downloading at a client computer, scanning CODE-A to derive...
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7613711 |
Specification of a hierarchical authorization model for a DBMS—SQL language extensions
Provided are systems and methods that facilitate providing permission to entities of a database. A system includes a component that authorizes a principal of a containing entity to grant a...
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7607019 |
Small memory footprint fast elliptic encryption
A method of generating a digital signature includes generating a first random number from a finite field of numbers, and generating field elements defining a first point on an elliptic curve...
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7603562 |
System and method for reducing memory requirements of firmware
A mechanism for making increased amounts of firmware available to a computer pre-boot is discussed. To increase the amount of firmware available pre-boot, a design decision is made during the build...
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7596700 |
Method and system for establishing trusting environment for sharing data between mutually mistrusting entities
A method and system for sharing data and interrogating data include establishing a level of trust between mutually mistrusting entities so that data may be shared therebetween based on the level of...
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7594275 |
Digital rights management system
A public licensing infrastructure (PLI) for a digital rights management (DRM) system is described. In an implementation, a method includes generating a formal license for content. The formal...
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7594119 |
System for managing time rights linked to a digital content
A system for detecting the time exceeding conditions of at least one application being executed by a processor, including: an element for storing time conditions, the conditions being sorted by...
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7593527 |
Providing digital signature and public key based on shared knowledge
A public key and digital signature is provided using a private key of a public-private key pair in an elliptic curve digital signature algorithm (ECDSA) by: identifying domain parameters of an...
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7590854 |
Hierarchical identity-based encryption and signature schemes
A signature {Sig, {Q i }} is generated on a message M by a signer E t in a hierarchical system including the entities E 0 , E 1 , . . . , E t , each entity E i (i>0) being a child of E i−1 ....
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7590852 |
Method for remote electronic verification and authentication and screening of potential signatories for remote electronic notary transactions via remote PC encrypted platform to a broadband digitally wireless cellular/PDA device or portable PC device
A virtual notary Kiosk is disclosed for performing live electronic personal signatory verification, authentication and screening for the purpose of transacting remote electronic notarizations with...
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7587605 |
Cryptographic pairing-based short signature generation and verification
In at least one implementation, described herein, P and Q 1 , . . . , Q n are public points on an elliptic curve over a finite field, but the ratios of Q i to P are private. Those ratios are the...
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7584363 |
Fair blind signature process
In a fair blind signature process, a user interacts with a signer in order to complete a 7-tuple (A,e,s,t,x u ,x,m) such that A e =a 0 a 1 x a 2 m a 3 x u a 4 t a 5 s (mod n), where a 0 , a 1 , a...
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7581109 |
Delegation of electronic signature by multi-agent cryptography
For signing of data by a given one of M delegates mandated by N titleholders, where M≧2 and N=1 or M=1 and N≧2, the terminal of the given delegate reads in a delegation server information on...
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7581093 |
Hitless manual cryptographic key refresh in secure packet networks
In a hitless manual cryptographic key refresh scheme, a state machine may be independently maintained at each network node. The state machine may include a first state, a second state, and a third...
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7577844 |
Systems and methods for encoding randomly distributed features in an object
The described systems and methods described are directed at encoding randomly distributed features in an object. Randomly distributed features in an authentication object are determined. Data...
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7574605 |
Method of managing digital signature, apparatus for processing digital signature, and a computer readable medium for recording program of managing digital signature
A method of managing digital signature includes the steps of preparing a signature log file storing signature log entry information, generating a new digital signature for a transmission message by...
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7574604 |
Network device registration
An embodiment of the present invention includes a technique to register a client to a server for communication. A remote commander transmits an identification code to the server and the client. The...
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7571324 |
Method and device for anonymous signature with a shared private key
A cryptographic method and apparatus for anonymously signing a message. Added to the anonymous signature is another signature which is calculated (operation 13 ) using a private key common to all...
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7571312 |
Methods and apparatus for generating endorsement credentials for software-based security coprocessors
A virtual manufacturer authority is launched in a protected portion of a processing system. A key for the virtual manufacturer authority is created. The key is protected by a security coprocessor...
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7570759 |
System and method for secure encryption
A method for encrypting a message containing a plurality of message segments is described. First, a key is input into a SHA function to generate a first hash value. Then, a first message segment is...
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7568106 |
Cooperative non-repudiated message exchange in a network environment
A system and method of performing cooperative non-repudiated message exchange from a first system to a second system in a computer network comprises checking for discrepancies between a current...
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7567672 |
Cryptographic communication system
In a cryptographic communication system, a prover is connected through a channel to a verifier. Elements a, b, c, d of a finite group are used as a public key and a parameter “x” as a private...
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7565544 |
Systems and methods for verifying the trustworthiness of a file comprising computer instructions
An exemplary method involves receiving a request to process a file comprising computer instructions. The file may be a script, a source code file, a binary file, etc. The method also involves...
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7555652 |
Method for user attestation signatures with attributes
A method for generating and verifying a user attestation-signature value and issuing an attestation value for using a user attestation-signature value that corresponds to at least one attribute,...
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7552196 |
Detecting corrupted data before transmission to a client
A method of data transmission including receiving a request for data over an Internet, by a data provider; obtaining data, in response to the request, at the data provider; applying a quality...
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7551737 |
Cryptographic keys using random numbers instead of random primes
A system and method for providing cryptographic keys which are usable in a network of connected computer nodes applying a signature scheme. The method employs: generating a random secret key usable...
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7549061 |
Unauthorized contents detection system
An executing device for conducting playback is high during the playback of contents. The executing device is equipped with a highly efficient processor and reduces the processing load involved in...
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7549060 |
Using a rights template to obtain a signed rights label (SRL) for digital content in a digital rights management system
Content is encrypted according to a content key (CK) ((CK(content))), (CK) is protected according to a license server public key (PU-DRM), and rights data associated with the content is retrieved...
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7549052 |
Generating and matching hashes of multimedia content
Hashes are short summaries or signatures of data files which can be used to identify the file. Hashing multimedia content (audio, video, images) is difficult because the hash of original content...
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7549051 |
Long-life digital certification for publishing long-life digital content or the like in content rights management system or the like
A digital certificate is employed to produce a digital signature for a digital construct. In the digital certificate is set forth a certificate validity period defining for the digital certificate...
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7543153 |
Digital signature generating apparatus, method, computer program and computer-readable storage medium
A digital signature generating apparatus generates a digital signature of digital data. The digital signature generating apparatus includes a receiving unit, the secret key changing unit and a...
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7543149 |
Method, system and computer product for securing patient identity
A method for securing patient identity comprising accessing an electronic medical records database including patient data for a plurality of patients. Each patient in the electronic medical records...
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7542569 |
Security of data connections
The invention concerns the security of the data connections of a telephone user. The basic idea of the invention is to forward the authentication of a telephone system to the leg between two...
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7533270 |
Signature schemes using bilinear mappings
Methods and systems are provided for generating and verifying signatures of digital messages communicated between signers and verifiers. Using bilinear mappings, such as Weil or Tate pairings,...
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7533267 |
Anti-tampering signature method for rewritable media, anti-tampering signature apparatus for executing the method, anti-tampering signature system provided with the apparatus, and computer-readable recording medium storing anti-tampering signature program for achieving the method
An anti-tampering signature apparatus is provided with an extraction portion 33 for extracting a characteristic quantity that represents a characteristic of image data according to an instruction...
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7529365 |
Device and method of applying check bit to encrypt instruction for protection
A device for applying a check bit to encrypt instructions for protection includes a check-bit generator, a first check-bit location generator and a check-bit insertion unit. The check-bit generator...
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7526651 |
Electronic group signature method with revocable anonymity, equipment and programs for implementing the method
A ring-signature scheme is adapted so that at least one of the variability parameter values used is an identity trace of the anonymous signatory, determined as a function of anonymity withdrawal...
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7526649 |
Session key exchange
According to an embodiment of the invention, a method and apparatus for session key exchange are described. An embodiment of a method comprises requesting a service for a platform; certifying the...
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7523490 |
Session key security protocol
A security protocol for use in a multi-site authentication system. After authenticating a user, an authentication server generates a ticket including information associated with the user. The...
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7519825 |
Electronic certification and authentication system
The invention is an automated system that works in the data center of certification offices connected to the internet which enables a member of the any of the certification offices to certify his...
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7519819 |
Layered security in digital watermarking
A media object authentication system uses layers of security features based on digital watermarks embedded in media objects. The system generates a first digital watermark with a message payload...
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7516330 |
Platform and method for establishing provable identities while maintaining privacy
In one embodiment, a method for utilizing a pseudonym to protect the identity of a platform and its user is described. The method comprises producing a pseudonym that includes a public pseudonym...
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7505585 |
Method of generating cryptographic key using elliptic curve and expansion in joint sparse form and using same
A method of generating a cryptographic key between two users. First, the users select an elliptic curve. Next, the users select a point P on the curve. Next, the first user selects integers r a ...
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7490069 |
Anonymous payment with a verification possibility by a defined party
The present invention relates to a method for verifying an anonymous payment by a defined party in a communication system providing a public key infrastructure. The method comprising the steps of...
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7486789 |
Device and method for calculation on elliptic curve
In scalar multiplication method using a Montgomery-type elliptic curve, a high-speed elliptic curve calculation device effectively uses a table that stores coordinates of certain scalar multiple...
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7483533 |
Elliptic polynomial cryptography with multi x-coordinates embedding
Given a set of elliptic points that satisfy an elliptic polynomial equation defined over a finite field F which requires N-bits to represent its elements, a method of cryptographic encryption and...
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7475255 |
Analog physical signature devices and methods and systems for using such devices to secure the use of computer resources
A method for binding a computer program to an analog physical signature device to form an interactive system for controlling the use of the computer program, the method comprising the steps of...
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