Treffer: Universal test for quantum one-way permutations
Quantum Computation and Information Project, Exploratory Research for Advanced Technology, Japan Science and Technology Agency, 5-28-3 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
Secure Computing Laboratory, Fujitsu Laboratories Ltd., 4-1-1 Kamikodanaka, Nakahara-ku, Kawasaki 211-8588, Japan
Quantum Computation and Information Project, Exploratory Research for Advanced Technology, Japan Science and Technology Agency, Matsuo Bldg. 2F, 406 Iseyacho, Kawaramachi Marutamachi, Kamigyo-ku, Kyoto 602-0873, Japan
Graditate School of Informatics, Kyoto University, Yoshida-Honachi, Sakyo-ku, Kyoto 606-8501, Japan
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Mathematics
Telecommunications and information theory
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The next bit test was introduced by Blum and Micali and proved by Yao to be a universal test for cryptographic pseudorandom generators. On the other hand, no universal test for the cryptographic one-wayness of functions (or permutations) is known, although the existence of cryptographic pseudorandom generators is equivalent to that of cryptographic one-way functions. In the quantum computation model, Kashefi, Nishimura and Vedral gave a sufficient condition of (cryptographic) quantum one-way permutations and conjectured that the condition would be necessary. In this paper, we affirmatively settle their conjecture and complete a necessary and sufficient condition for quantum one-way permutations. The necessary and sufficient condition can be regarded as a universal test for quantum one-way permutations, since the condition is described as a collection of stepwise tests similar to the next bit test for pseudorandom generators.