Search Patents
  • COMPUTER-IMPLEMENTED DIGITAL COMMUNICATION USING CRYPTOGRAPHY
    Publication number: 20230198785
    Abstract: Computer-implemented digital communication using cryptography is disclosed. The computer-implemented methods are used to perform digital communication for minting and transfer of digital commodities using short message service (SMS) messages. The cryptographic system disclosed generates graphical user interfaces and executes operations on a backend apparatus. When the backend apparatus receives the SMS messages, the backend apparatus retrieves the digital commodities and interacts with a storage apparatus to store the digital commodities, identified by a uniform resource locator (URL).
    Type: Application
    Filed: June 17, 2022
    Publication date: June 22, 2023
    Inventors: Lucas Henning, Addison David McKenzie, Yonathan Lapchik
  • Obfuscating cryptographic parameters used in elliptical curve cryptography, and related systems and devices
    Patent number: 11936768
    Abstract: An obfuscation process is described for obfuscating a cryptographic parameter of cryptographic operations such as calculations used in elliptical curve cryptography and elliptical curve point multiplication. Such obfuscation processes may be used for obfuscating device characteristics that might otherwise disclose information about the cryptographic parameter, cryptographic operations or cryptographic operations more generally, such as information sometimes gleaned from side channel attacks and lattice attacks.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: March 19, 2024
    Assignee: Microchip Technology Incorporated
    Inventor: Huiming Chen
  • Method and apparatus of using irrational numbers in random number generators for cryptography
    Publication number: 20030016823
    Abstract: Innovative Innovative techniques over the conventional random number generators and randomization procedures are disclosed. The improved techniques use irrational numbers over the pseudo-random numbers generated by LFSR and use irrational number generators involve floating-point operations over the conventional integer arithmetic and logic operations. These innovative techniques can be applied to various cryptography applications such as hashes, ciphers, and random number generators. Particularly, the cubic root and inverse cubic root are two suitable functions for use in this invention.
    Type: Application
    Filed: July 3, 2002
    Publication date: January 23, 2003
    Inventor: Shine Chung
  • XZ-elliptic curve cryptography with secret key embedding
    Patent number: 7961874
    Abstract: Secure communications over an insecure channel is provided using symmetric key elliptic curve cryptography. More specifically, a shared secret key and/or data bit string is embedded in the X-coordinate and the Z-coordinate of an elliptic curve point defined in projective coordinates, wherein the embedding process is deterministic and non-iterative. In addition, the base point may be blinded by making the base point dependant on the shared secret key.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: June 14, 2011
    Assignee: King Fahd University of Petroleum & Minerals
    Inventor: Mohammad K. Ibrahim
  • Using multiples above two with running totals in elliptic curve cryptography scalar multiplication acceleration tables
    Patent number: 8428252
    Abstract: A method, integrated circuit chip, and computer program product for cryptographically processing an input value with Elliptic Curve Cryptography (ECC) using ECC scalar multiplication are provided. The ECC scalar multiplication is performed with the use of an enhanced acceleration table (EAT). The EAT uses multiple running totals, at least one of which has a multiplier above 2.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: April 23, 2013
    Assignee: EMC Corporation
    Inventors: David Paul Makepeace, Sean Parkinson, Mark Hibberd, Peter Alan Robinson
  • System, method and apparatus to obtain a key for encryption/decryption/data recovery from an enterprise cryptography key management system
    Patent number: 7970143
    Abstract: A technique for obtaining a key for encryption/decryption/data recovery from an enterprise key management system. In one example embodiment, this is accomplished by connecting a client mobile device to a cryptography key management using a UID, a UDID, the names of one or more data files to encrypt, a password Pswd, and a KeyID to obtain the key for encryption/decryption/data recovery.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: June 28, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ravigopal Vennelakanti, Savio Fernandes
  • Location-based security using multi-point cryptography
    Patent number: 12185109
    Abstract: Systems and methods may provide location-based security using multi-point cryptography. The method may include receiving, by a controller, an original message for secure delivery to a mobile terminal. The method may also include generating, by the controller, a plurality of messages to be delivered to the mobile terminal using geographic diversity. The method may further include sending, by the controller, the plurality of messages to geographically diverse transmitters for transmission to the mobile terminal.
    Type: Grant
    Filed: March 16, 2022
    Date of Patent: December 31, 2024
    Assignee: QATAR UNIVERSITY
    Inventors: Tamer Khattab, Mohammed Hafez, Abdullatif Shikfa, Huseyin Arslan
  • MODULUS REDUCTION FOR CRYPTOGRAPHY
    Publication number: 20230087297
    Abstract: Modulus reduction for cryptography is described. An example of an apparatus includes multiplier circuitry to perform integer multiplication; and modulus reduction circuitry to perform modulus reduction based on a prime modulus, wherein the modulus reduction circuitry is to receive a product value, the product value resulting from multiplying a first n-bit value by a second n-bit value to generate the product value and perform modulus reduction to reduce the product value to a result within the prime modulus; and wherein the modulus reduction circuitry is based on shift and add operations.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 23, 2023
    Applicant: Intel Corporation
    Inventors: Santosh Ghosh, Andrea Basso
  • Trans Vernam Cryptography: Round One
    Publication number: 20170250796
    Abstract: This invention establishes means and protocols to secure data, using large undisclosed amounts of randomness, replacing the algorithmic complexity paradigm. Its security is credibly appraised through combinatorics calculus, and it transfers the security responsibility to the user who determines how much randomness to use. This Trans-Vernam cryptography is designed to intercept the Internet of Things where the ‘things’ operate on limited computing capacity and are fueled by fast draining batteries. Randomness in large amounts may be quickly and conveniently stored in the most basic IOT devices, keeping the network safe.
    Type: Application
    Filed: February 18, 2017
    Publication date: August 31, 2017
    Inventor: Gideon Samid
  • Quantum cryptography based on phase entangled photons
    Patent number: 7242774
    Abstract: A quantum cryptography system [100] may include a transmitter [110] configured to generate entangled first and second photons, modulate and detect the first photon, and transmit detection information and the second photon. The system [100] may also include a receiver [160] configured to modulate the second photon. The receiver [160] may also be configured to detect the second photon based on the detection information.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: July 10, 2007
    Assignee: BBN Technologies Corp.
    Inventors: Brig Barnum Elliott, John D. Schlafer, David Spencer Pearson
  • SYSTEM AND DEVICE INCLUDING RECONFIGURABLE PHYSICAL UNCLONABLE FUNCTIONS AND THRESHOLD CRYPTOGRAPHY
    Publication number: 20180351754
    Abstract: A system and device including reconfigurable physical unclonable functions (‘RPUFs’) and threshold cryptography uses cryptographic and physical means of security. A plurality of reconfigurable physical unclonable functions (‘RPUFs’) and a memory are connected to a processor that is configured to derive information associating the RPUFs with cryptographic shares of a sensitive value, store such information in the memory, and reconfigure a RPUF upon powering up of the device such that information stored in the memory is not valid for the reconfigured RPUF.
    Type: Application
    Filed: June 6, 2017
    Publication date: December 6, 2018
    Applicant: Analog Devices, Inc.
    Inventors: John Ross Wallrabenstein, Thomas Joseph Brindisi
  • Non-autonomous dynamical orbit cryptography
    Publication number: 20040228480
    Abstract: NADO is a process for encrypting and decrypting information in a variety of cryptographic devices. The underlying process is a fast stream-like cipher that can be implemented efficiently in analog or digital hardware or in software. The NADO process makes use of three novel methods in cryptography: 1) A sequence of permutations which scrambles and spreads out the encrypted information; (2) A state generator built with a non-autonomous dynamical system to generate an unpredictable sequence of states; (3) One or more perturbators which perturb both the non-autonomous dynamical system and the sequence of permutations in a non-periodic way.
    Type: Application
    Filed: October 25, 2003
    Publication date: November 18, 2004
    Inventor: Michael Fiske
  • Two Non-Orthogonal States Quantum Cryptography Method and Apparatus with Inter-and Inter-Qubit Interference for Eavesdropper Detection
    Publication number: 20080292099
    Abstract: An apparatus and method for implementing a secure quantum cryptography system using two non-orthogonal states. For each qubit, the to emitter station prepares a quantum system in one of two non-orthogonal quantum states in the time-basis to code bit values. Intra- and inter-qubit interference is then used to reveal eavesdropping attempts. Witness states are used to help reveal attacks performed across the quantum system separation.
    Type: Application
    Filed: September 1, 2005
    Publication date: November 27, 2008
    Applicant: ID QUANTIQUE S.A.
    Inventors: Nicolas Gisin, Grégoire Ribordy, Hugo Zbinden
  • Homogenous atomic pattern for double, add, and subtract operations for digital authentication using elliptic curve cryptography
    Patent number: 10635405
    Abstract: A method of performing finite field addition and doubling operations in an elliptic curve cryptography (ECC) authentication scheme as a countermeasure to side-channel attack. The addition and doubling operations are executed using atomic patterns that involve the same sequence and number of operation types, so that the noise consumption and electromagnetic emanation profile of circuitry performing the operations is identical regardless of operation. A subtraction operation using such an atomic pattern is also disclosed.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: April 28, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Eric Thierry Peeters
  • Homogeneous atomic pattern for double, add, and subtract operations for digital authentication using elliptic curve cryptography
    Patent number: 9645794
    Abstract: A method of performing finite field addition and doubling operations in an elliptic curve cryptography (ECC) authentication scheme as a countermeasure to side-channel attack. The addition and doubling operations are executed using atomic patterns that involve the same sequence and number of operation types, so that the noise consumption and electromagnetic emanation profile of circuitry performing the operations is identical regardless of operation. A subtraction operation using such an atomic pattern is also disclosed.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: May 9, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Eric Thierry Peeters
  • Homogenous atomic pattern for double, add, and subtract operations for digital authentication using elliptic curve cryptography
    Patent number: 10025560
    Abstract: A method of performing finite field addition and doubling operations in an elliptic curve cryptography (ECC) authentication scheme as a countermeasure to side-channel attack. The addition and doubling operations are executed using atomic patterns that involve the same sequence and number of operation types, so that the noise consumption and electromagnetic emanation profile of circuitry performing the operations is identical regardless of operation. A subtraction operation using such an atomic pattern is also disclosed.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: July 17, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Eric Thierry Peeters
  • Covers or components for cell phones or other digital devices featuring physical cryptography to forward and receive encrypted messages on a tamper-proof basis
    Patent number: 11880474
    Abstract: A cover or components for cellphones or other digital devices featuring physical cryptography to forward and receive encrypted messages on a tamper-proof basis which uses physical encryption to send encrypted messages between two or more users, in which decoding of the forwarded message takes place by overlaying (30) on the cell phone device or digital device (1) a key image cover (20) matching the forwarded matrix image (10).
    Type: Grant
    Filed: July 6, 2021
    Date of Patent: January 23, 2024
    Inventor: Joao Carlos Gomes De Oliveira
  • TWO NON-ORTHOGONAL STATES QUANTUM CRYPTOGRAPHY METHOD AND APPARATUS WITH INTRA- AND INTER-QUBIT INTERFERENCE FOR EAVESDROPPER DETECTION
    Publication number: 20100239250
    Abstract: An apparatus and method for implementing a secure quantum cryptography system using two non-orthogonal states. For each qubit, the emitter station prepares a quantum system in one of two non-orthogonal quantum states in the time-basis to code bit values. Intra- and inter-qubit interference is then used to reveal eavesdropping attempts.
    Type: Application
    Filed: June 4, 2010
    Publication date: September 23, 2010
    Inventors: Nicolas GISIN, Grégoire Ribordy, Hugo Zbinden
  • Homogenous atomic pattern for double, add, and subtract operations for digital authentication using elliptic curve cryptography
    Patent number: 11573769
    Abstract: A method of performing finite field addition and doubling operations in an elliptic curve cryptography (ECC) authentication scheme as a countermeasure to side-channel attack. The addition and doubling operations are executed using atomic patterns that involve the same sequence and number of operation types, so that the noise consumption and electromagnetic emanation profile of circuitry performing the operations is identical regardless of operation. A subtraction operation using such an atomic pattern is also disclosed.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: February 7, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Eric Thierry Peeters
  • METHOD AND APPARATUS FOR TIME-LAPSE CRYPTOGRAPHY
    Publication number: 20100185863
    Abstract: According to one aspect, provided is a construction and specification for an implementation of a new cryptographic primitive, “Time-Lapse Cryptography”, with which a sender can encrypt a message so that it is guaranteed to be revealed at an exact moment in the future, even if this revelation turns out to be undesirable to the sender. In one embodiment, a Time-Lapse Cryptography Service is provided (“the Service”) based on a network of parties. Senders encrypt their messages with this public key whose secret key is not known to anyone—not even a trusted third party—until a predefined and specific future time T+?, at which point the secret key is constructed and published. In one example, the secret key can only be known after it is constructed. At or after that time, anyone can decrypt the cipher text using this secret key.
    Type: Application
    Filed: November 30, 2007
    Publication date: July 22, 2010
    Inventors: Michael O. Rabin, Christopher A. Thorpe
Narrow Results

Filter by US Classification