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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Physical unclonable function ： ウィキペディア英語版 Physical unclonable function Physical unclonable function (PUF, sometimes also called physically unclonable function) is a physical entity that is embodied in a physical structure and is easy to evaluate but hard to predict. Further, an individual PUF device must be easy to make but practically impossible to duplicate, even given the exact manufacturing process that produced it. In this respect it is the hardware analog of a one-way function. The name "physical unclonable function" might be a little misleading as some PUFs are clonable, and most PUFs are noisy and therefore do not achieve the requirements for a function. Today, PUFs are usually implemented in Integrated Circuits and are typically used in applications with high security requirements. ==History== Early references about systems that exploit the physical properties of disordered systems for authentication purposes date back to Bauder in 1983〔D.W. Bauder, "An anti-counterfeiting concept for currency systems", Research report PTK-11990. Sandia National Labs. Albuquerque, NM, 1983.〕 and Simmons in 1984.〔G. Simmons, "A system for verifying user identity and authorization at the point-of sale or access," Cryptologia, vol. 8, no. 1, pp. 1–21, 1984.〕〔G. Simmons, "Identification of data, devices, documents and individuals," in IEEE International Carnahan Conference on Security Technology, 1991, pp. 197–218.〕 Naccache and Frémanteau provided an authentication scheme in 1992 for memory cards.〔David Naccache and Patrice Frémanteau, Unforgeable identification device, identification device reader and method of identification, August 1992.() 〕 The terms POWF (physical one-way function) and PUF (physical unclonable function) were coined in 2001 and 2002,〔Blaise Gassend, Dwaine Clarke, Marten van Dijk and Srinivas Devadas. Silicon Physical Random Functions. Proceedings of the Computer and Communications Security Conference, November 2002〕 the latter publication describing the first ''integrated'' PUF where unlike PUFs based on optics, the measurement circuitry and the PUF are integrated onto the same electrical circuit (and fabricated on silicon). From 2010 onwards till 2013, PUF gained attention in the smartcard market as a promising way to provide “silicon fingerprints”, creating cryptographic keys that are unique to individual smartcards. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Physical unclonable function」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.