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| Number | Title | Issue Date |
| 8189779 | Quantum program concealing device and quantum program concealing method An object of the present invention is to enable an authorized user to execute a quantum program, without letting the authorized user know the operation contents of the quantum program. A quantum program concealment device 10 includes an expansion unit ... | 05/29/2012 |
| 8189777 | Apparatus and method for driving display panel A display panel driver includes: an encryption unit configured to receive pixel data of unit pixels from an image data source, generate an encryption key by comparing an odd-numbered pixel data with a subsequent even-numbered pixel data, and assign a reference value... | 05/29/2012 |
| 8189778 | Adaptive generation of a pseudo random number generator seed A seed for use in a cryptographic operation for an electronic device is determined by estimating the number of entropy data bits needed to satisfy a predetermined security strength of the cryptographic operation. The estimation is based on an entropy strength of a s... | 05/29/2012 |
| 8184807 | Content distribution/browsing system, content distribution apparatus, content browsing apparatus and program A content distribution/browsing system is disclosed. First to (m−1)th encrypted content items E(K1, C1∥K2,1), . . . , E(Km−1, Cm−1∥Km,1) contain second to m-th (next in order) sharing keys K... | 05/22/2012 |
| 8180049 | 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, these methods and systems enable generation and verification of efficient... | 05/15/2012 |
| 8180048 | Method and system for computational transformation The invention generally relates to computational transformation process, which has applications in cryptography, random number generation, hash code generation etc. The computational transformation module uses a keyset, which is designed using a two dimensional arra... | 05/15/2012 |
| 8175268 | Generating and securing archive keys Described herein is a method and apparatus for managing archives. The archive management process receives a passphrase and an indicator of an archive to be managed. The passphrase is used to encipher or decipher an archive key dependent on whether data is to be inse... | 05/08/2012 |
| 8170206 | Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method The invention provides an enciphering apparatus and method, a deciphering apparatus and method and an information processing apparatus and method by which illegal copying can be prevented with certainty. Data enciphered by a 1394 interface of a DVD player is transmi... | 05/01/2012 |
| 8170207 | Split-key key-agreement protocol This invention relates to a method for generating a shared secret value between entities in a data communication system, one or more of the entities having a plurality of members for participation in the communication system, each member having a long term private k... | 05/01/2012 |
| 8165290 | Methods and apparatus for bootstrapping mobile-foreign and foreign-home authentication keys in mobile IP Methods and apparatus for dynamically generating authentication keys are disclosed. Specifically, a Mobile-Foreign authentication key is separately generated by both the Mobile Node and Foreign Agent. Similarly, a Foreign-Home authentication key is separately genera... | 04/24/2012 |
| 8165289 | Method and apparatus for the generation of code from pattern features A method is provided for deriving a single code from a biometric sample in a way which enables different samples of a user to provide the same code whilst also distinguishing between samples of different users. Different features are analysed to obtain mean and vari... | 04/24/2012 |
| 8160247 | Providing local storage service to applications that run in an application execution environment Methods, systems, and apparatus, including medium-encoded computer program products, for providing local storage service to applications that run in an application execution environment. In one aspect, a method includes receiving a request from one of the applicatio... | 04/17/2012 |
| 8160248 | Authenticated mode control Methods and systems for authenticated mode control in controlled devices are disclosed. A method for changing a mode in a controlled device from a current mode includes selecting one of several available key derivation functions based on a target mode, generating a ... | 04/17/2012 |
| 8160246 | Apparatus and method for generating a key for broadcast encryption An apparatus and method for generating a key for a broadcast encryption. The apparatus includes a node secret generator for managing a user that receives broadcast data in a tree structure and for generating a unique node secret for each node in the tree structure. ... | 04/17/2012 |
| 8155310 | Key derivation functions to enhance security Key derivation algorithms are disclosed. In one key derivation application, a segment of the master key is hashed. Two numbers of derived from another segment of the master key. A universal hash function, using the two numbers, is applied to the result of the hash, ... | 04/10/2012 |
| 8144866 | Method and system for securing data utilizing redundant secure key storage A system and method which protects a data processing system against encryption key errors by providing redundant encryption keys stored in different locations, and providing the software with the ability to select an alternate redundant key if there is any possibili... | 03/27/2012 |
| 8139767 | Fine-grained forward-secure signature scheme The presented methods form the basis of a forward-secure signature scheme that is provably secure. Moreover, the presented methods form also the basis of a fine-grained forward-secure signature scheme that is secure and efficient. The scheme allows to react immediat... | 03/20/2012 |
| 8135132 | Method and system for secure storage, transmission and control of cryptographic keys A system and method are described supporting secure implementations of 3DES and other strong cryptographic algorithms. A secure key block having control, key, and hash fields safely stores or transmits keys in insecure or hostile environments. The control field prov... | 03/13/2012 |
| 8130949 | Partially reversible key obfuscation Techniques are provided to obfuscate seed values to produce a decryption key for a simplified content protection scheme. A first repeatable sequence is performed that encrypts a value stored in a first memory location using a value stored in the second memory locati... | 03/06/2012 |
| 8121289 | Cryptographic method with integrated encryption and revocation, system, device and programs for implementing this method A first entity (1) includes a secret encryption key (g1, γ) of an encryption diagram which can accept a plurality of encryption keys. A plurality of decoders have respective encryption keys, each incorporating a respective key index. The method co... | 02/21/2012 |
| 8116451 | Key validation scheme A system and method for validating digital information transmitted by one correspondent to another in a data communication system. The method comprising the steps of generating a public key in accordance with a predetermined, generating a public key in accordance wi... | 02/14/2012 |
| 8098819 | Method, system and securing means for data archiving with automatic encryption and decryption by fragmentation of keys In the method for data archiving with automatic en- and decryption data (9, 10) are exchanged between a client station (1) and an archive station (4). A securing means (2) connected between the stations (1, 4) encrypts the plain da... | 01/17/2012 |
| 8098818 | Secure registration for a multicast-broadcast-multimedia system (MBMS) A method and an apparatus for secure registration for a multicast-broadcast-multimedia system (MBMS) are disclosed. A random number is generated by a broadcast-multicast-service center (BM-SC) and broadcast to user equipment in the coverage area of a radio access ne... | 01/17/2012 |
| 8094817 | Cryptographic key management in communication networks An authentication server and a system and method for managing cryptographic keys across different combinations of user terminals, access networks, and core networks. A Transformation Coder Entity (TCE) creates a master key (Mk), which is used to derive keys during t... | 01/10/2012 |
| 8085934 | Reverse cryptographic key expansion Apparatus having corresponding methods and computer programs comprise: a key input module to receive a first cryptographic key; and a reverse key expansion module to generate a second cryptographic key based on the first cryptographic key, wherein each of the first ... | 12/27/2011 |
| 8081754 | Key update method and apparatus thereof A key update method and a key update apparatus are provided. The method includes storing data in a database of an update server, the data having an encoded updated node key in response to a node key update for a group; selecting necessary data, from among the data h... | 12/20/2011 |
| 8077870 | Cryptographic key split binder for use with tagged data elements A process of cryptographically securing a data object including one or more respectively tagged data elements includes selecting a tagged data element from among a plurality of tagged data elements, based on an associated data tag. A plurality of cryptographic key s... | 12/13/2011 |
| 8077869 | Organic keyed encryption An encryption technique that creates a unique encryption key or fingerprint based on unique physical and electrical characteristics of a target electronic assembly to be protected. The encryption key can be constructed by exploiting the manufacturing variances prese... | 12/13/2011 |
| 8045708 | Discrete key generation method and apparatus A computer enabled secure method and apparatus for generating a cryptographic key, to be used in a subsequent cryptographic process, where the key is to be valid only for example during a specified time period. The method uses a polynomial function which is a functi... | 10/25/2011 |
| 8014522 | Optical storage media and the corresponding cryptography for data encryption thereof Based on the demand of developing a data encryption technique for the optical storage media, the present invention discloses a cryptography for data encryption based on a design of specific hardware conditions, so as to achieve the security requirements for the encr... | 09/06/2011 |
| 8014523 | Key management The present invention relates to arrangements and methods for generating keys for cryptographic processing of communication between a first communication unit (200) and a second communication unit (300). The first communication unit (200) and se... | 09/06/2011 |
| 8009831 | Method and system for hiding the decryption key in a dispersive way A method for hiding the decryption key in a dispersive way is disclosed. A decryption key corresponding to content to be accessed is decomposed into at least two partial decryption keys, comprising first partial decryption key and second partial decryption key. The ... | 08/30/2011 |
| 8005213 | Method, apparatus, and computer program for generating session keys for encryption of image data An object of this invention is to protect the right of a content holder without any necessity of a special storage medium incorporating a copyright protecting mechanism when the content holder does not coincide with a content creator. Information for encryption key ... | 08/23/2011 |
| 8005214 | Data transmission system A cipher key is generated by first information shared in secrete between a data transmitting unit 10 and a data receiving unit 20, second information derived from duplication control information of transmit data and third information which is time chan... | 08/23/2011 |
| 8000471 | Robust cipher design In an iterated block cipher, a method for round key encryption and key generation, the method including providing a first function Fi and a second function Fj, providing a round key generation function, the round key generation function being operative to utilize, i... | 08/16/2011 |
| 8000470 | Method of public key generation A potential bias in the generation of a private key is avoided by selecting the key and comparing it against the system parameters. If a predetermined condition is attained it is accepted. If not it is rejected and a new key is generated. ... | 08/16/2011 |
| 7995753 | Parallel cipher operations using a single data pass Multiple cipher hardware algorithms are run in parallel over an input stream. For example, one algorithm can process the input stream using an old cipher key while a parallel algorithm processes the input stream using the current cipher key. Alternatively, multiple ... | 08/09/2011 |
| 7995751 | Method and apparatus for encrypting data in a wireless communication system In a communications system, a method of transforming a set of message signals representing a message comprising the steps of first encoding one of the set of message signals in accordance with a first keyed transformation, a second encoding of the one of the set of ... | 08/09/2011 |
| 7995752 | Method for accelerating cryptographic operations on elliptic curves This invention provides a method for accelerating multiplication of an elliptic curve point Q(x,y) by a scalar k, the method comprising the steps of selecting an elliptic curve over a finite field Fq where q is a prime power such that there exists an endomorphism ψ... | 08/09/2011 |
| 7978847 | System using data compression and hashing adapted for use for multimedia encryption A system and method is disclosed for multimedia encryption. Within the system of the present invention, a data compression module receives and compresses a media signal into a compressed data stream. A data acquisition module receives and selects a set of data from ... | 07/12/2011 |
