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| Number | Title | Issue Date |
| 8150029 | Detection of a disturbance in a calculation performed by an integrated circuit A method for detecting a disturbance of a calculation, by an electronic circuit, of a result of an integral number of applications of an internal composition law on elements of an abelian group, by successive iterations of different steps according to the even or od... | 04/03/2012 |
| 8023643 | Encryption/decryption apparatus A first Exclusive OR circuit operates an Exclusive OR between input data and a predetermined random number. An operation circuit performs one operation of encryption and decryption of output data from the first Exclusive OR circuit. A data register circuit, which ha... | 09/20/2011 |
| 8009826 | Cryptoanalysis method and system In a cellular interception system, an information processing method for converting information of several cellular-network wireless messages from a first encrypted format under a session key, where each message is encrypted by a cellular ciphering algorithm chosen o... | 08/30/2011 |
| 7929688 | Parameter generation apparatus, encryption system, decryption system, encryption apparatus, decryption apparatus, encryption method, decryption method, and program thereof A parameter generation apparatus for generating parameters causing no decryption error for an NTRU cryptosystem so that an encrypted communication can be carried out between an encryption apparatus and a decryption apparatus in a secure and reliable manner. The para... | 04/19/2011 |
| 7853010 | Testing of an algorithm executed by an integrated circuit A method for testing the resistance of an algorithm using at least one secret quantity against attacks measuring physical effects of the execution of the algorithm by an integrated circuit, consisting of implementing statistical key search functions based on hypothe... | 12/14/2010 |
| 7809130 | Password recovery system and method A system, method and computer program product for recovering a password including, for each possible password to be tested, generating a periodicity unit based on a number of symbols in the password and a size of a chunk used by a one-way function to encrypt the pas... | 10/05/2010 |
| 7634083 | Differential power analysis Information leaked from smart cards and other tamper resistant cryptographic devices can be statistically analyzed to determine keys or other secret data. A data collection and analysis system is configured with an analog-to-digital converter connected to measure th... | 12/15/2009 |
| 7599488 | Differential power analysis Information leaked from smart cards and other tamper resistant cryptographic devices can be statistically analyzed to determine keys or other secret data. A data collection and analysis system is configured with an analog-to-digital converter connected to measure th... | 10/06/2009 |
| 7587044 | Differential power analysis method and apparatus Information leaked from smart cards and other tamper resistant cryptographic devices can be statistically analyzed to determine keys or other secret data. A data collection and analysis system is configured with an analog-to-digital converter connected to measure th... | 09/08/2009 |
| 7564969 | Methodology, system and computer readable medium for detecting file encryption A method, computer readable medium and system for determining whether a data stream is in cyphertext format statistically analyzes the data stream to compute a resultant value indicative of a level of uniformity for a frequency distribution of the data stream's byte... | 07/21/2009 |
| 7460665 | Cipher strength evaluation apparatus An object is to evaluate the strength in consideration of the relationship held between keys, to allow the detection of a weak key condition to lower the difficulty in decrypting ciphertext, and to detect a weak key based on the weak key condition. Based on the rela... | 12/02/2008 |
| 7430301 | Method for the enhancement of complex peaks A method (200) of enhanced peak detection in a correlation signal (g(x)) is disclosed. The method (200) comprises identifying (215) in the correlation signal (g(x)) positions where the modulus value of the correlation signal is above a first pre... | 09/30/2008 |
| 7412608 | Secure data processing unit, and an associated method A secure data processing unit has a data/program instruction memory for storing data/program instructions, an instruction line with a large number of function stages for processing the data/program instructions, and a control unit for controlling the function stages... | 08/12/2008 |
| 7391865 | Secure data parser method and system The present invention provides a method and system for securing sensitive data from unauthorized access or use. The method and system of the present invention is useful in a wide variety of settings, including commercial settings generally available to the public wh... | 06/24/2008 |
| 7349545 | Key agreement method in secure communication system using multiple access method A key agreement method for secure communication in a multiple access system is provided. A key agreement method for secure communication in a multiple access system, the key agreement method includes the steps of (a) a first user, modulating signals from a so... | 03/25/2008 |
| 7302572 | Portable information storage medium and its authentication method Authentification data (R) comprising random numbers generated by a reader/writer (200) is given to an IC card (100), encrypted by utilizing a secret key (a), and returned as encryption data (C). This encryption data (C) is decoded by utilizing an open ... | 11/27/2007 |
| 7263618 | Method for binding a program module The invention relates to a method for loading a program module (L1, L2, L3) in a terminal, in which one or several programs (A, B) are running, and in which method subroutines (P1, P2, P3) are stored in said program modules ... | 08/28/2007 |
| 7243330 | Method and apparatus for providing self-implementing hardware-software libraries Method and apparatus for providing self-implementing hardware-software libraries is described. One aspect of the invention relates to designing an embedded system for an integrated circuit. A hardware platform is defined. A software platform is defined having a plur... | 07/10/2007 |
| 7227947 | Cryptographic method and cryptographic device The invention relates to a cryptographic method with at least one computing step containing a modular exponentiation E according to E=xd(mod p·q), with a first prime factor p, a second prime factor q, an exponent d and a number x, whereby the modular exp... | 06/05/2007 |
| 7209572 | Digital watermark embedding apparatus, digital watermark extraction apparatus, and methods thereof A document image undergoes document analysis to obtain circumscribing rectangles of characters (S601), and two distances between non-neighboring circumscribing rectangles from the head of the document are respectively calculated as d1 and d2 (S | 04/24/2007 |
| 7200231 | Information processing system, information processing apparatus, and computer-readable recording medium In an information distribution processing system having a plurality of information processing apparatuses connected through a network, at least one of the plurality of information processing apparatuses can acquire distribution information to which is added first ad... | 04/03/2007 |
| 7194630 | Information processing apparatus, information processing system, information processing method, storage medium and program A provider side apparatus provides original digital data together with a digital signature generated by the provider side apparatus, the digital signature detecting whether the original digital data was falsified or detecting a change level given to the original dig... | 03/20/2007 |
| 7190807 | Digital watermark extracting method, apparatus, program and storage medium The invention is to precisely extract a digital watermark from image data which are subjected to embedding of the digital watermark in a state of a binary image and are then converted into a multi-value image (gray scale image). For attaining the foregoing ob... | 03/13/2007 |
| 7187769 | Method and apparatus for evaluating the strength of an encryption In the evaluation of the randomness of an S-box, measures of resistance to higher order cryptanalysis, interpolation cryptanalysis, partitioning cryptanalysis and differential-linear cryptanalysis and necessary conditions for those measures to have resistance to eac... | 03/06/2007 |
| 7174017 | Decryption system for encrypted audio An encrypted audio decryption system for decrypting encrypted audio sound. The system includes a hearing device and a key FOB. The hearing device is adapted to receive the encrypted audio sound, decrypt the encrypted audio sound, and transmit signals corresponding t... | 02/06/2007 |
| 7174013 | Efficient universal hashing method An efficient hashing technique uses w 2 + w 2 operations to hash a string “w” words lo... | 02/06/2007 |
| 7158652 | Method of using plural watermarks to prevent unauthorized image copying An increasing number of people are employing a variety of methods of editing and processing digital content in an effort to illegally copy the content. It is difficult to develop digital watermark technology that is able to withstand all types of editing and process... | 01/02/2007 |
| 7155611 | Method of operating a conditional access system for broadcast applications In a method for operating a conditional access system for broadcast applications, the conditional access system comprising a number of subscribers and each subscriber having a terminal including a conditional access module and a secure device for storing entitlement... | 12/26/2006 |
| 7155609 | Key exchange mechanism for streaming protected media content In accordance with a key exchange mechanism for streaming protected media content, key exchange components on both a client device and a server device communicate with one another to pass one or more keys from a removable storage medium (e.g., a DVD) on the server d... | 12/26/2006 |
| 7142689 | Image processing apparatus for determining specific images An image processing method is provided. This method comprises: a first information extraction step of extracting first information, including a registration signal used to correct the geometrical distortion of an image; a determination step of employing results obta... | 11/28/2006 |
| 7113592 | Method and device for loading input data into a program when performing an authentication A method for enhancing data security when chip cards are used for payment transactions and input data are loaded into an algorithm when performing an authentication. The security of the debit and credit data is enhanced by subdividing the data blocks and by switchin... | 09/26/2006 |
| 7092930 | Architecture and method to secure database records from tampering in devices such as postage value dispensing mechanisms A method and apparatus for protecting against a replay attack in a database system makes use of customer records including a counter, and freshness records that include the customer counters and a freshness record counter. The counter from the customer records, the ... | 08/15/2006 |
| 7089213 | System and method for producing and verifying secure negotiable instruments The present invention relates to producing and presenting negotiable instruments and, more specifically, to printing and presenting checks, which are resistant to forgery or fraud. The negotiable instrument comprises an encrypted numeric sequence and a one-way decry... | 08/08/2006 |
| 7072488 | Data processing method and apparatus An encrypted image C(i, j) is generated by exclusively ORing pseudo random number values, which are generated using a key k0 as a key, and respective bits, except for the LSBs, of B pixel data at respective pixel positions (i, j) of digital image data I(i... | 07/04/2006 |
| 7058820 | Information processing system, medium, information processing apparatus, information processing method, storage medium storing computer readable program for realizing such method Copyright information embedded in a digital content can always be sampled and the copyright of the digital content can be protected reliably, by using a sampling program which is automatically activated and samples the copyright information from the digital content.... | 06/06/2006 |
| 7000111 | Method for masking secret multiplicands A mobile terminal for use in a mobile communications system includes a SIM card storing subscriber related data. For security, the SIM card performs secret cryptographic calculations with secret numbers. Secret information is hidden from outside observation by sched... | 02/14/2006 |
| 6996544 | Multiple party content distribution system and method with rights management features A multiple party system for distributing content. In one embodiment, four parties are involved in the system: a consumer, a service provider, an authenticator, and a content provider. The distribution of content from the content provider to the consumer is carried o... | 02/07/2006 |
| 6990387 | Test system for identification and sorting of integrated circuit devices A system for identifying and sorting integrated circuit devices based on an encrypted Fuse ID information such as manufacturing and test information stored in the integrated circuit device, includes a test fixture for receiving an integrated circuit device to be ide... | 01/24/2006 |
| 6985581 | Method and apparatus to verify circuit operating conditions A circuit includes an operation unit adapted to perform a circuit operation in a plurality of rounds. The operation unit may operate properly under a predetermined range of operating conditions. The operation unit is adapted to select between receiving an input sign... | 01/10/2006 |
| 6983262 | Server having an automatic management mechanism A server, having an automatic management mechanism, automatically delivers a request for license from a user to a communication window, automatically arranges information such as titles of software parts, keywords of the software parts, etc. in a hierarchical struct... | 01/03/2006 |
