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Tamper resistance is resistance to tampering (intentional malfunction or sabotage) by either the normal users of a product, package, or system or others with physical access to it. There are many reasons for employing tamper resistance. Tamper resistance ranges from simple features like screws with special drives, more complex devices that render themselves inoperable or encrypt all data transmissions between individual chips, or use of materials needing special tools and knowledge. Tamper-resistant devices or features are common on packages to deter package or product tampering. Anti-tamper devices have one or more components: tamper resistance, tamper detection, tamper response, and tamper evidence. 〔 In some applications, devices are only tamper-evident rather than tamper-resistant. ==Tampering== Tampering involves the deliberate altering or adulteration of a product, package, or system. Solutions may involve all phases of product production, packaging, distribution, logistics, sale, and use. No single solution can be considered as "tamper-proof". Often multiple levels of security need to be addressed to reduce the risk of tampering. Some considerations might include: * Identify who a potential tamperer might be: average user, child, psychopath, misguided joker, saboteur, organized criminals, terrorists. What level of knowledge, materials, tools, etc. might they have? * Identify all feasible methods of unauthorized access into a product, package, or system. In addition to the primary means of entry, also consider secondary or "back door" methods. * Control or limit access to products or systems of interest. * Improve the tamper resistance to make tampering more difficult, time-consuming, etc. * Add tamper-evident features to help indicate the existence of tampering. * Educate people to watch for evidence of tampering. Tamper means interfere with (something) without authority or so as to cause damage. 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「tamper resistance」の詳細全文を読む スポンサード リンク
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