BOUDA, Jan, Paulo MATEUS, Nicola PAUNKOVIC a Joao RASGA. ON THE POWER OF QUANTUM TAMPER-PROOF DEVICES. International Journal of Quantum Information. World Scientific, 2008, roč. 6, č. 2, s. 281 - 302. ISSN 0219-7499. |
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@article{767107, author = {Bouda, Jan and Mateus, Paulo and Paunkovic, Nicola and Rasga, Joao}, article_number = {2}, keywords = {quantum information processing; cryptography}, language = {eng}, issn = {0219-7499}, journal = {International Journal of Quantum Information}, title = {ON THE POWER OF QUANTUM TAMPER-PROOF DEVICES}, volume = {6}, year = {2008} }
TY - JOUR ID - 767107 AU - Bouda, Jan - Mateus, Paulo - Paunkovic, Nicola - Rasga, Joao PY - 2008 TI - ON THE POWER OF QUANTUM TAMPER-PROOF DEVICES JF - International Journal of Quantum Information VL - 6 IS - 2 SP - 281 - 302 EP - 281 - 302 PB - World Scientific SN - 02197499 KW - quantum information processing KW - cryptography N2 - We show how quantum tamper-proof devices (QTPD's) can be used to attack and to develop security protocols. On one hand, we prove that it is possible to transfer proofs of zero-knowledge protocols using QTPD's. This attack can be extended to other security schemes where privacy is important. On the other hand, we present a fair contract signing protocol using QTPD's where there is no communication with Judge during the exchange phase (which is impossible classically). In the latter case, we make use of decoherence in the quantum state of the QTPD to implement a global clock over the asynchronous network. QTPD's seem to be possible to implement with existing quantum hardware, due to the fact that it is hard to isolate quantum memory from interference. These theoretical results contribute to justify the implementation of QTPD's. ER -
BOUDA, Jan, Paulo MATEUS, Nicola PAUNKOVIC a Joao RASGA. ON THE POWER OF QUANTUM TAMPER-PROOF DEVICES. \textit{International Journal of Quantum Information}. World Scientific, 2008, roč.~6, č.~2, s.~281 - 302. ISSN~0219-7499.
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