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  • NADO Cryptography Using One-Way Functions
    Publication number: 20180233069
    Abstract: NADO Cryptography Using One-way Functions is a symmetric cryptography for encrypting and decrypting information. The NADO process introduces some novel concepts and methods to cryptography: (1) The notion of a key generator is presented that eliminates the dependence of the cryptographic security on a single, static cryptography key. (2) A key generator updating method built with one-way functions exhibiting the avalanche effect that generates an unpredictable sequence of keys as the encryption or decryption algorithm executes; (3) An sequence of unpredictable permutations that diffuse the informations across the whole block. (4) An sequence of unpredictable permutations that act as substitution boxes. (4) The use of key generator updating and one-way functions that exploit the avalanche effect to update the permutations in (3) and (4). NADO using one-way functions can be implemented efficiently in hardware or in software.
    Type: Application
    Filed: June 1, 2014
    Publication date: August 16, 2018
    Inventor: Michael Stephen Fiske
  • Thread Ownership of Keys for Hardware-Accelerated Cryptography
    Publication number: 20180063100
    Abstract: An embedded processor with a cryptographic co-processor operating in a multithreading environment, with inter-thread security for cryptography operations. A secure memory block accessible by the co-processor stores a plurality of key entries, each key entry storing data corresponding to a cryptography key, and a thread owner field that identifies an execution thread is associated with that key. A central processing unit issues a call to the co-processor to execute a cryptography operation along with a key identifier for the key to be used, and a thread identifier indicating the current execution thread. The co-processor compares the thread identifier received from the CPU with the thread owner field of the key entry corresponding to the key identifier. If the thread identifier matches the thread owner in the key entry, the key is retrieved from the secure memory block for use by the co-processor for the cryptography operation.
    Type: Application
    Filed: August 23, 2016
    Publication date: March 1, 2018
    Inventors: Eric Thierry Peeters, Gregory Allen North
  • High performance programmable cryptography system
    Patent number: 7840000
    Abstract: The present invention is a method and system for high performance programmable cryptography. In an embodiment of the invention, a cryptography system in accordance with the present invention may include a processor with memory, at least two field programmable gate array (FPGA) blocks and control logic which may be algorithm independent. Programming files storing one or more crypto algorithms may be maintained remotely to the cryptography system whereby the cryptography system may remain not cryptographically controlled when un-programmed. FPGA blocks may be field-programmed to allow execution of a desired crypto algorithm. Additionally, with multiple FPGA logic blocks, programming of a first FPGA block may be simultaneously performed with the execution of a crypto algorithm via a second FPGA block to enable enhanced encryption rate performance.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: November 23, 2010
    Assignee: Rockwell Collins, Inc.
    Inventor: James A. Marek
  • NADO cryptography using one-way functions
    Patent number: 10403173
    Abstract: NADO Cryptography Using One-way Functions is a symmetric cryptography for encrypting and decrypting information. The NADO process introduces some novel concepts and methods to cryptography: (1) The notion of a key generator is presented that eliminates the dependence of the cryptographic security on a single, static cryptography key. (2) A key generator updating method built with one-way functions exhibiting the avalanche effect that generates an unpredictable sequence of keys as the encryption or decryption algorithm executes; (3) An sequence of unpredictable permutations that diffuse the informations across the whole block. (4) An sequence of unpredictable permutations that act as substitution boxes. (4) The use of key generator updating and one-way functions that exploit the avalanche effect to update the permutations in (3) and (4). NADO using one-way functions can be implemented efficiently in hardware or in software.
    Type: Grant
    Filed: June 1, 2014
    Date of Patent: September 3, 2019
    Assignee: Fiske Software, LLC
    Inventor: Michael Stephen Fiske
  • Cryptography chip with identity verification
    Patent number: 11023620
    Abstract: Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for performing cryptographic operations subject to identity verification. One of the methods includes receiving, by a cryptography chip, a request to perform a requested cryptographic operation from a client including client identity information, wherein the cryptography chip includes a processing resource that performs cryptographic operations and a storage resource that stores key information used in the cryptographic operations, and identity information associated with clients that are permitted to request cryptographic operations; determining, by the cryptography chip, that the client identity information is associated with one of the clients that are permitted to request cryptographic operations; and performing, by the cryptography chip, the requested cryptographic operation based on the key information stored in the storage resource.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: June 1, 2021
    Assignee: Advanced New Technologies Co., Ltd.
    Inventors: Zhiyuan Feng, Yanpeng Li, Long Cheng
  • CONFIGURABLE LATTICE CRYPTOGRAPHY PROCESSOR FOR THE QUANTUM-SECURE INTERNET OF THINGS AND RELATED TECHNIQUES
    Publication number: 20200265167
    Abstract: Described is a lattice cryptography processor with configurable parameters. The lattice cryptography processor includes a sampling circuit configured to operate in accordance with a Secure Hash Algorithm 3 (SHA-3)-based pseudo-random number generator (PRNG), a single-port random access memory (RAM)-based number theoretic transform (NTT) memory architecture and a modular arithmetic unit. The described lattice cryptography processor is configured to be programmed with custom instructions for polynomial arithmetic and sampling. The configurable lattice cryptography processor may operate with lattice-based CCA-secure key encapsulation and a variety of different lattice-based protocols including, but not limited to: Frodo, NewHope, qTESLA, CRYSTALS-Kyber and CRYSTALS-Dilithium, achieving up to an order of magnitude improvement in performance and energy-efficiency compared to state-of-the-art hardware implementations.
    Type: Application
    Filed: February 19, 2020
    Publication date: August 20, 2020
    Inventors: Utsav BANERJEE, Anantha P. CHANDRAKASAN
  • Data transfer efficiency in a cryptography accelerator system
    Patent number: 7941662
    Abstract: Methods and apparatus are provided for performing authentication and decryption operations in a cryptography accelerator system. Input data passed to a cryptography accelerator from a host such a CPU includes information for a cryptography accelerator to determine where to write the processed data. In one example, processed data is formatted as packet payloads in a network buffer. Checksum information is precalculated and an offset for a header is maintained.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: May 10, 2011
    Assignee: Broadcom Corporation
    Inventors: Joseph Tardo, Mark Buer
  • NADO Cryptography with Key Generators
    Publication number: 20200228315
    Abstract: A symmetric cryptography for encrypting and decrypting information is provided, that can be implemented efficiently in hardware or in software. The symmetric cryptography uses a key generator, so that the cryptography is not dependent on a single, static cryptography key. The key generator is a value or collection of values from which the key is generated. In some embodiments, the key generator substantially increases the computational complexity of differential cryptanalysis and other cryptographic attacks because it has more entropy than the key(s). In an embodiment, the key generator is updated with one-way functions exhibiting the avalanche effect, which generates an unpredictable sequence of keys used during the encryption or decryption process. In an embodiment, a dynamic key is derived from a key generator with a one-way function. In an embodiment, a block cipher uses a different dynamic key to encrypt each block of plaintext, where each key is derived from a different key generator.
    Type: Application
    Filed: March 23, 2020
    Publication date: July 16, 2020
    Inventor: Michael Stephen Fiske
  • XZ-ELLIPTIC CURVE CRYPTOGRAPHY SYSTEM AND METHOD
    Publication number: 20130202104
    Abstract: The XZ-elliptic curve cryptography system and method provides a computerized method that allows for the encryption of messages through elliptic polynomial cryptography and, particularly, with the embedding of either a symmetric secret key or a public key in the message bit string. The method of performing XZ-elliptic polynomial cryptography is based on the elliptic polynomial discrete logarithm problem. It is well known that an elliptic polynomial discrete logarithm problem is a computationally “difficult” or “hard” problem.
    Type: Application
    Filed: December 1, 2010
    Publication date: August 8, 2013
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: LAHOUARI GHOUTI, MOHAMMAD K. IBRAHIM, ABDULAZIZ M. AL-KHORAIDLY
  • Method for conducting data encryption and decryption using symmetric cryptography algorithm and table look-up device
    Patent number: 9374218
    Abstract: Disclosed are a method for conducting data encryption and decryption using a symmetric cryptography algorithm and a table look-up device. The method comprises: when it is determined that it is required to use S-boxes to look up a table in a symmetric cryptography algorithm, determining all types of S-boxes to be used; for each type of S-box, determining the total number Ni of the type of S-box, and when Ni is larger than 1, determining that the type of S-box meets a multiplexing condition; and when data encryption and decryption are conducted using the symmetric cryptography algorithm, multiplexing at least one type of S-box which meets the multiplexing condition. The present application can reduce the occupation by the symmetric cryptography algorithm of hardware resources under the condition of comparative shortage of hardware resources.
    Type: Grant
    Filed: June 9, 2013
    Date of Patent: June 21, 2016
    Assignee: China IWNCOMM Co., LTD.
    Inventors: Zhiyong Li, Jun Cao, Xiang Yan
  • Configurable lattice cryptography processor for the quantum-secure internet of things and related techniques
    Patent number: 11416638
    Abstract: Described is a lattice cryptography processor with configurable parameters. The lattice cryptography processor includes a sampling circuit configured to operate in accordance with a Secure Hash Algorithm 3 (SHA-3)-based pseudo-random number generator (PRNG), a single-port random access memory (RAM)-based number theoretic transform (NTT) memory architecture and a modular arithmetic unit. The described lattice cryptography processor is configured to be programmed with custom instructions for polynomial arithmetic and sampling. The configurable lattice cryptography processor may operate with lattice-based CCA-secure key encapsulation and a variety of different lattice-based protocols including, but not limited to: Frodo, NewHope, qTESLA, CRYSTALS-Kyber and CRYSTALS-Dilithium, achieving up to an order of magnitude improvement in performance and energy-efficiency compared to state-of-the-art hardware implementations.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: August 16, 2022
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Utsav Banerjee, Anantha P. Chandrakasan
  • Methods and apparatus for performing hash operations in a cryptography accelerator
    Publication number: 20030185391
    Abstract: Methods and apparatus are provided for implementing a cryptography accelerator for performing operations such as hash operations. The cryptography accelerator recognizes characteristics associated with input data and retrieves an instruction set for processing the input data. The instruction set is used to configure or control components such as MD5 and SHA-1 hash cores, XOR components, memory, etc. By providing a cryptography accelerator with access to multiple instruction sets, a variety of hash operations can be performed in a configurable cryptographic accelerator.
    Type: Application
    Filed: December 24, 2002
    Publication date: October 2, 2003
    Applicant: Broadcom Corporation
    Inventors: Zheng Qi, Ronald Squires, Mark Buer, David K. Chin
  • Cryptography accelerator interface decoupling from cryptography processing cores
    Patent number: 7568110
    Abstract: Methods and apparatus are provided for decoupling a cryptography accelerator interface from cryptographic processing cores. A shared resource is provided at the cryptography accelerator interface having multiple input ports. References to data in the shared resource are provided to allow processing and ordering of data in preparation for processing by cryptographic processing cores without substantial numbers of separate buffers in the cryptographic processing data paths.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: July 28, 2009
    Assignee: Broadcom Corporation
    Inventors: Mark Buer, Donald P. Matthews
  • METHOD FOR CONDUCTING DATA ENCRYPTION AND DECRYPTION USING SYMMETRIC CRYPTOGRAPHY ALGORITHM AND TABLE LOOK-UP DEVICE
    Publication number: 20150172043
    Abstract: Disclosed are a method for conducting data encryption and decryption using a symmetric cryptography algorithm and a table look-up device. The method comprises: when it is determined that it is required to use S-boxes to look up a table in a symmetric cryptography algorithm, determining all types of S-boxes to be used; for each type of S-box, determining the total number Ni of the type of S-box, and when Ni is larger than 1, determining that the type of S-box meets a multiplexing condition; and when data encryption and decryption are conducted using the symmetric cryptography algorithm, multiplexing at least one type of S-box which meets the multiplexing condition. The present application can reduce the occupation by the symmetric cryptography algorithm of hardware resources under the condition of comparative shortage of hardware resources.
    Type: Application
    Filed: June 9, 2013
    Publication date: June 18, 2015
    Applicant: China IWNCOMM Co., LTD.
    Inventors: Zhiyong Li, Jun Cao, Xiang Yan
  • Method of cipher block chaining using elliptic curve cryptography
    Publication number: 20110200186
    Abstract: The method of cipher block chaining using elliptic curve cryptography allows for the encryption of messages through elliptic curve cryptography and, particularly, with the performance of cipher block chaining utilizing both the elliptic curve and its twist, regardless of whether the elliptic curve and its twist are isomorphic with respect to one another. The method of performing elliptic curve cryptography is based on the elliptic curve discrete logarithm problem. It is well known that an elliptic curve discrete logarithm problem is a computationally “difficult” or “hard” problem.
    Type: Application
    Filed: February 18, 2010
    Publication date: August 18, 2011
    Inventors: Lahouari Ghouti, Mohammad K. Ibrahim, Adnan A. Gutub
  • Elliptic polynomial cryptography with secret key embedding
    Patent number: 8351601
    Abstract: Elliptic polynomial cryptography with secret key embedding is a method that allows for the encryption of messages through elliptic polynomial cryptography and, particularly, with the embedding of secret keys in the message bit string. The method of performing elliptic polynomial cryptography is based on the elliptic polynomial discrete logarithm problem. It is well known that an elliptic polynomial discrete logarithm problem is a computationally “difficult” or “hard” problem.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: January 8, 2013
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Lahouari Ghouti, Mohammad K. Ibrahim, Adnan A. Gutub
  • Cryptography accelerator application program interface
    Publication number: 20040098600
    Abstract: Methods and apparatus are provided for making function calls to various cryptography accelerators. An application program interface abstraction layer coupled to a cryptography accelerator receives generic function calls from designer configured software and performs operations such as security association management, policy management, packet processing, cryptography accelerator configuration, and key commit management. Upon receiving a generic function call, the abstraction layer performs processing to make a chip specific function call or update abstraction layer management information associated with the generic function call.
    Type: Application
    Filed: February 27, 2003
    Publication date: May 20, 2004
    Applicant: Broadcom Corporation
    Inventor: Abdel Raouf Eldeeb
  • Methods and apparatus performing hash operations in a cryptography accelerator
    Publication number: 20090028326
    Abstract: Methods and apparatus are provided for implementing a cryptography accelerator for performing operations such as hash operations. The cryptography accelerator recognizes characteristics associated with input data and retrieves an instruction set for processing the input data. The instruction set is used to configure or control components such as MD5 and SHA-1 hash cores, XOR components, memory, etc. By providing a cryptography accelerator with access to multiple instruction sets, a variety of hash operations can be performed in a configurable cryptographic accelerator.
    Type: Application
    Filed: July 1, 2008
    Publication date: January 29, 2009
    Applicant: Broadcom Corporation
    Inventors: Zheng Qi, Ronald Squires, Mark Buer, David K. Chin
  • HIGH LEVEL SYNTHSIS OF CLOUD CRYPTOGRAPHY CIRCUITS
    Publication number: 20240413995
    Abstract: Generally discussed herein are devices, systems, and methods for high-level synthesis of a kyber cryptography circuit. A method can include defining, by a high-level programming language, behavior of a kyber cryptography circuit resulting in a behavior definition. The behavior of the kyber cryptography circuit can include parallel butterfly operations with output of the parallel butterfly operations fedback directly to inputs of the parallelized butterfly operations. The method can include converting, by high-level synthesis (HLS), the behavior definition to a gate-level implementation resulting in a circuit definition. The method can include implementing the circuit definition in hardware.
    Type: Application
    Filed: June 7, 2023
    Publication date: December 12, 2024
    Inventors: Mojtaba BISHEH NIASAR, Bharat S. PILLILLI
  • XZ-elliptic curve cryptography system and method
    Patent number: 8509426
    Abstract: The XZ-elliptic curve cryptography system and method provides a computerized method that allows for the encryption of messages through elliptic polynomial cryptography and, particularly, with the embedding of either a symmetric secret key or a public key in the message bit string. The method of performing XZ-elliptic polynomial cryptography is based on the elliptic polynomial discrete logarithm problem. It is well known that an elliptic polynomial discrete logarithm problem is a computationally “difficult” or “hard” problem.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: August 13, 2013
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Lahouari Ghouti, Mohammad K. Ibrahim, Abdulaziz M. Al-Khoraidly
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