Cryptographic Protocols under Quantum Attacks

Details Cryptographic Protocols under Quantum Attacks Cryptographic Protocols under Quantum Attacks

2011-02-04

arxiv.org/abs/1102.0885v2

Physics

Quantum Physics

PhD Thesis, Aarhus University, Denmark, 146 pages; v2: updated bib entry

Scientific paper

The realm of this thesis is cryptographic protocol theory in the quantum world. We study the security of quantum and classical protocols against adversaries that are assumed to exploit quantum effects to their advantage. Security in the quantum world means that quantum computation does not jeopardize the assumption, underlying the protocol construction. But moreover, we encounter additional setbacks in the security proofs, which are mostly due to the fact that some well-known classical proof techniques are forbidden by certain properties of a quantum environment. Interestingly, we can exploit some of the very same properties to the benefit of quantum cryptography. Thus, this work lies right at the heart of the conflict between highly potential effects but likewise rather demanding conditions in the quantum world.

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