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Zusammenfassung:
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This thesis has been written under the supervision of my mentor dr. Vladimir Bo zin at
the University of Belgrade in the academic year 2016. The topic of this thesis is quantum
information theory, with special attention to quantum contract signing protocols. The
thesis is divided into four chapters. Chapter 1 gives introduction to Quantum mechanics
and necessary mathematical background. Chapter 2 is about quantum information
theory. Quantum algorithms, including Schor's and Grover's, are described. Chapter
3 deals with classical contract signing, and cryptography. Also discussed is the RSA
algorithm and BB84 quantum key distribution. Chapter 4 describes quantum signing
protocol, and proves, among other things, asymptotic behavior for probability of cheating. |