Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Application No. | Application Title | Issue Date |
| 20080170701 | Delegation system for decryption rights An object of this ciphertext decryption rights delegation system is to enable conversion of PKE-system ciphertext into IBE-system encrypted ciphertext, and, in a delegation system with users using only an IBE system, of preventing restoration of the master-secret key ge... | 07/17/2008 |
| 20080152134 | Efficient revocation of receivers Methods and apparatus for efficient revocation of receivers. In one implementation, a method of broadcast encryption includes: assigning a respective master key to each of a plurality of receivers, where each master key can be used to derive two or more of a plurality o... | 06/26/2008 |
| 20080152133 | INFORMATION ENCRYPTION APPARATUS AND CONTROLLING METHOD OF THE SAME, COMPUTER PROGRAM AND COMPUTER READABLE STORAGE MEDIUM The present invention stores and manages only one piece of key information even if contents information includes a plurality of partial contents arranged in a sequence, and the partial contents are encrypted with different keys. When a piece of contents information incl... | 06/26/2008 |
| 20080144837 | Identity Based Encrypition A method of performing IBE cryptography comprising the steps of a key generation server transmitting a master public key to a processor, the processor generating or retrieving a fresh master public key derived from the master public key transmitted by the key generation... | 06/19/2008 |
| 20080130880 | MULTIKEY SUPPORT FOR MULTIPLE OFFICE SYSTEM A novel approach is proposed for centralized administration of a multikey for a plurality of clients at a set of remote office/branch offices (ROBOs). A multikey having a set of properties, permissions, and policies is first associated with a secure item present at one ... | 06/05/2008 |
| 20080123859 | Method and system for encrypting and decrypting a transport stream using multiple algorithms There is provided a method for encrypting a data stream using multiple algorithms. In one embodiment, a first portion of the data stream is encrypted with a first algorithm utilizing a first key to generate a first encrypted portion. The first algorithm can be, for exam... | 05/29/2008 |
| 20080095362 | 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 the a... | 04/24/2008 |
| 20080084998 | Encryption key management device and encryption key management method According to one embodiment, an encryption key management device comprises a means for applying encryption processing by a common key system to a first key by using a second key generated from a random seed and an input password to record the encrypted first common key ... | 04/10/2008 |
| 20080075284 | Public Key Media Key Block Protected content distribution is accomplished by a first entity generating a set of asymmetric key pairs, creating a plurality of sets of private keys by selecting a combination of private keys from the set of asymmetric key pairs for each created set, and distributing... | 03/27/2008 |
| 20080069347 | AGGREGATE SIGNATURE SCHEMES An authenticated RFID system is provided that uses elliptic curve cryptography (ECC) to reduce the signature size and read/write times when compared to traditional public key implementations such as RSA. Either ECDSA or ECPVS can be used to reduce the signature size and... | 03/20/2008 |
| 20080072047 | METHOD AND SYSTEM FOR CAPWAP INTRA-DOMAIN AUTHENTICATION USING 802.11R An solution for a mobile station to perform intra-domain inter-access controller authentication using an 802.11r protocol in CAPWAP architecture is presented. The access controller is the authenticator that is configured to store a top-level and second-level shared auth... | 03/20/2008 |
| 20080063199 | Information recording apparatus and control method thereof According to one embodiment, an information recording apparatus generates a plurality of mutually different title keys so as to conform to rules stipulating the respective ways of handling titles, executes an encryption process on the generated plurality of title keys b... | 03/13/2008 |
| 20080063208 | Data Transmitting Apparatus A data communication system is provided in which a time required for a wiretapper to decrypt an encrypted text is significantly increased so that concealment is improved. In a data transmitting apparatus (17105), a multilevel encoding part (111) switches a... | 03/13/2008 |
| 20080063191 | Encrypting Device, Decrypting Device, Information System, Encrypting Method, Decrypting Method, and Program An encryption processing part of a controller of each of user devices specifies components of content as encryption target parts, creates an encryption key creation key by reading out a public key, for each of the encryption target parts, of a second user who is allowed... | 03/13/2008 |
| 20080056492 | Copyright protective device and method A key generation section 10 generates a key K to be used for cryptographic processing, based on an encrypted key data group EK. A key information retention/selection section 20 retains Lhe generated key and an intermediate key which was obtained when gener... | 03/06/2008 |
| 20080049934 | Management Server Device, Content Repoduction Device, and Recording Medium When a technique for specifying an unauthorized terminal based on a combination of watermarks embedded in content distributed without authorization is applied to content distributed on recording media, recording capacity limits of the recording media lead to a limit on ... | 02/28/2008 |
| 20080046732 | AD-HOC NETWORK KEY MANAGEMENT An ad hoc network includes a first node, a second node, and a third node. The first node and second node share a first shared secret key, and the first node and third node share a second shared secret key. The second node and third node share a temporal key. The first n... | 02/21/2008 |
| 20080046718 | FEDERATED DIGITAL RIGHTS MANAGEMENT SCHEME INCLUDING TRUSTED SYSTEMS Federated systems for issuing playback certifications granting access to technically protected content are described. One embodiment of the system includes a registration server connected to a network, a content server connected to the network and to a trusted system, a... | 02/21/2008 |
| 20080025517 | 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: providing a plurality of authorized devices; dividing the plurality of aut... | 01/31/2008 |
| 20080025511 | Data Communication System A data communication system wherein the concealment is enhanced by significantly increasing the time required for the wiretapper to decrypt a cipher text. The data communication system is constituted by connecting a data transmitting apparatus (13105) to a data r... | 01/31/2008 |
| 20080013723 | 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 transmitted... | 01/17/2008 |
| 20080008316 | System and Method for Enterprise Security Including Symmetric Key Protection A system and method for enterprise security including symmetric key protection. In accordance with an embodiment, the system provides a higher level of protection against unauthorized key disclosure by encrypting randomly generated seed data used for key generation, and... | 01/10/2008 |
| 20070201692 | Data transmission apparatus, data transmission method A data communication apparatus which causes the eavesdropper to take a significantly increased time to analyze a cipher text and provides high concealability is provided. In a modulator section 112a, a branching section 114 branches a lightwave 2... | 08/30/2007 |
| 20070150965 | Data Security System and Method Adjunct to a Browser, Telecom or Encryption Program Data security for processing data or securing browser-input data operates on security sensitive content which is extracted, then either encrypted or stored in remote extract stores, and processed separate from remainder data. Extracted data, in one system, is remotely s... | 06/28/2007 |
| 20070140483 | Combination-based broadcast encryption method A combination-based broadcast encryption method includes: assigning by a server a base group of different combinations to each user; producing and sending secret information for each user by using as a base the base group allocated to each user; producing and sending an... | 06/21/2007 |
| 20070064936 | Content data delivery method and content data delivery system and handheld device for use therein There is provided a content data delivery system including a playback equipment that is adapted to be able to decrypt a content data encrypted with a content key data and to play back the decrypted content data and that holds an equipment ID to identify itself; a handhe... | 03/22/2007 |
| 20070041584 | Method for providing activation key protection A software activation method is disclosed which uses a two-key paradigm. The method provides increased piracy protection while providing a relatively straight forward process for a user to satisfy a license claim. ... | 02/22/2007 |
| 20060265595 | Cascading key encryption A method for securely transmitting data involves generating keys depending on previous keys and additional information, such as a password, in order to create a pseudo one-time pad. The data is encrypted using the pseudo one-time pad prior to transmission. Only the init... | 11/23/2006 |
| 20060239453 | Data encryption system for internet communication Two versions of a variable word length encryption method are discussed. The methods are adapted for providing the means for long-term confidential transmission of printed characters, pictures, and voice dialogues over telephone lines or the Internet. ... | 10/26/2006 |
| 20060039557 | Data processing method, its program,and its device A management device 20 outputs key designation data read from a card to a SAM unit 9a. The SAM unit 9a uses mutual authentication key data designated by key designation data to generate synthetic key data. The management device 20 <... | 02/23/2006 |
| 20050105720 | Code generator and device for the synchronous or asynchronous and permanent identification or encoding and decoding of data of any particular length A Code generator with a plurality of storage elements (FF1,2, . . . n) such as flip flops are connected to form a code-producing series (R), wherein the output of the final storage element (FF5) in the series (R) in connected to the input of the fi... | 05/19/2005 |
| 20050008154 | Random number generation for encrypting cellular communications In wireless communications, transmission devices require continuous supplies of random data for encryption processes. The invention provides a method for generating a continuous pool of truly random data with hardware that is already available in conventional CDMA phone... | 01/13/2005 |
