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Quantum Key Distribution Data Post-Processing with Limited Resources: Towards Satellite-Based Quantum CommunicationGigov, Nikolay 15 January 2013 (has links)
Quantum key distribution (QKD), a novel cryptographic technique for secure distribution of secret keys between two parties, is the first successful quantum technology to emerge from quantum information science. The security of QKD is guaranteed by fundamental properties of quantum mechanical systems, unlike public-key cryptography whose security depends on difficult to solve mathematical problems such as factoring. Current terrestrial quantum links are limited to about 250 km. However, QKD could soon be deployed on a global scale over free-space links to an orbiting satellite used as a trusted node.
Envisioning a photonic uplink to a quantum receiver positioned on a low Earth orbit satellite, the Canadian Quantum Encryption and Science Satellite (QEYSSat) is a collaborative project involving Canadian universities, the Canadian Space Agency (CSA) and industry partners. This thesis presents some of the research conducted towards feasibility studies of the QEYSSat mission.
One of the main goals of this research is to develop technologies for data acquisition and processing required for a satellite-based QKD system. A working testbed system helps to establish firmly grounded estimates of the overall complexity, the computing resources necessary, and the bandwidth requirements of the classical communication channel. It can also serve as a good foundation for the design and development of a future payload computer onboard QEYSSat.
This thesis describes the design and implementation of a QKD post-processing system which aims to minimize the computing requirements at one side of the link, unlike most traditional implementations which assume symmetric computing resources at each end. The post-processing software features precise coincidence analysis, error correction based on low-density parity-check codes, privacy amplification employing Toeplitz hash functions, and a procedure for automated polarization alignment.
The system's hardware and software components integrate fully with a quantum optical apparatus used to demonstrate the feasibility of QKD with a satellite uplink. Detailed computing resource requirements and QKD results from the operation of the entire system at high-loss regimes are presented here.
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The Elgamal Cryptosystem is better than the RSA Cryptosystem for mental pokerTetikoglu, Ipek. January 2007 (has links) (PDF)
Thesis (M.S.)--Duquesne University, 2007. / Title from document title page. Abstract included in electronic submission form. Includes bibliographical references (p. 43-47).
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Observations on the cryptologic properties of the AES algorithmSong, Beomsik. January 2004 (has links)
Thesis (Ph.D.)--University of Wollongong, 2004. / Typescript. Includes bibliographical references: leaf 109-116.
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Compression aided feature based steganalysis of perturbed quantization steganography in JPEG imagesThorpe, Christopher. January 2008 (has links)
Thesis (M.S.)--University of Delaware, 2007. / Principal faculty advisor: Charles G. Boncelet, Dept. of Computer & Information Sciences. Includes bibliographical references.
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FPGA design and performance analysis of SHA-512, Whirlpool and PHASH hashing functions /Zalewski, Przemysław. January 2008 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 2008. / Typescript. Includes bibliographical references (leaves 84-85).
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Elliptic curve cryptography: generation and validation of domain parameters in binary Galois Fields /Wozny, Peter January 2008 (has links)
Thesis (M.S.) -- Rochester Institute of Technology, 2008. / Typescript. Includes bibliographical references (leaves 57-60).
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Mobile code integrity through static program analysis, steganography, and dynamic transformation controlJochen, Michael J. January 2008 (has links)
Thesis (Ph.D.)--University of Delaware, 2008. / Principal faculty advisors: Lori L. Pollock and Lisa Marvel, Dept. of Computer & Information Sciences. Includes bibliographical references.
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An analysis of key generation efficiency of rsa cryptos ystem in distributed environments/Çağrıcı, Gökhan. Koltuksuz, Ahmet January 2005 (has links) (PDF)
Thesis (Master)--İzmir Institute of Technology, İzmir, 2005. / Keywords: Cryptosystem, rivest-Shamir-Adleman, parallel computing, parallel algorithms, Random number. Includes bibliographical references (leaves. 68).
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Computational algebraic attacks on the Advanced Encryption Standard (AES)Mantzouris, Panteleimon. January 2009 (has links) (PDF)
Thesis (M.S. in Electrical Engineering and M.S.in Applied Mathematics)--Naval Postgraduate School, September 2009. / Thesis Advisor(s): Canright, David ; Butler, Jon. "September 2009." Description based on title screen as viewed on 5 November 2009. Author(s) subject terms: Advanced Encryption Standard (AES), Rijndael's algorithm, block cipher, decipher, round of the algorithm, sparse multivariate polynomial. Includes bibliographical references (p. 101). Also available in print.
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Rijndael Circuit Level CryptanalysisPehlivanoglu, Serdar. January 2005 (has links)
Thesis (M.S.) -- Worcester Polytechnic Institute. / Keywords: private-key cryptography; Advanced Encryption Standard; K-secure; hermetic; block cipher; circuit complexity. Includes bibliographical references (p. 75-79).
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