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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 Differential fault analysis ： ウィキペディア英語版 Differential fault analysis Differential fault analysis is a type of side channel attack in the field of cryptography, specifically cryptanalysis. The principle is to induce ''faults''—unexpected environmental conditions—into cryptographic implementations, to reveal their internal states. For example, a smartcard containing an embedded processor might be subjected to high temperature, unsupported supply voltage or current, excessively high overclocking, strong electric or magnetic fields, or even ionizing radiation to influence the operation of the processor. The processor may begin to output incorrect results due to physical data corruption, which may help a cryptanalyst deduce the instructions that the processor is running, or what its internal data state is.〔Eli Biham, Adi Shamir: The next Stage of Differential Fault Analysis: How to break completely unknown cryptosystems (1996)〕〔Dan Boneh and Richard A. DeMillo and Richard J. Lipton: On the Importance of Checking Cryptographic Protocols for Faults, Eurocrypt (1997)〕 For DES and Triple DES, about 200 single-flipped bits are necessary to obtain a secret key.〔Ramesh Karri, et al.: Fault-Based Side-Channel Cryptanalysis Tolerant Rijndael Symmetric Block Cipher Architecture (2002)〕 DFA was also applied successfully to the AES cipher.〔Christophe Giraud: DFA on AES (2005)〕 Many countermeasures have been proposed to defend from this kind of attacks. Most of them are based on error detection schemes.〔Xiaofei Guo, et al.: (Invariance-based Concurrent Error Detection for Advanced Encryption Standard ) (2012)〕〔Rauzy and Guilley: (Countermeasures against High-Order Fault-Injection Attacks on CRT-RSA ) (2014) ((Open Access version ))〕 ==References== 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「Differential fault analysis」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.