Side-channel Attack
نویسندگان
چکیده
منابع مشابه
Power Analysis Based Side Channel Attack
Side channel attacks break the secret key of a cryptosystem using channels such as sound, heat, time and power consumption which are originally not intended to leak such information. Power analysis is a branch of side channel attacks where power consumption data is used as the side channel to attack the system. First using a device like an oscilloscope power traces are collected when the crypto...
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We propose a new scheme of attack on the Microsoft’s ASIRRA CAPTCHA which represents a significant shortcut to the intended attacking path, as it is not based in any advance in the state of the art on the field of image recognition. After studying the ASIRRA Public Corpus, we conclude that the security margin as stated by their authors seems to be quite optimistic. Then, we analyze which of the...
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While algebraic side-channel attack (ASCA) has been successful in breaking simple cryptographic algorithms, it has never been done on larger or more complex algorithms such as Twofish. Compared to other algorithms that ASCA has been used on, Twofish is more difficult to attack due to the key-dependent S-boxes as well as the complex key scheduling. In this paper, we propose the first algebraic s...
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1 We describe a side-channel attack on a substitution block, which is usually implemented as a table lookup operation. In particular, we have investigated smartcard implementations. The attack is based on the identifying equal intermediate results from power measurements while the actual values of these intermediates remain unknown. A powerful attack on substitution blocks can be mounted if the...
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Insertion of scan chains is the most common technique to ensure observability and controllability of sequential elements in an IC. However, when the chip deals with secret information, the scan chain can be used as back door for accessing secret (or hidden) information, and thus jeopardize the overall security. Several scan-based attacks on cryptographic functions have been described and shown ...
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ژورنال
عنوان ژورنال: The Journal of The Institute of Image Information and Television Engineers
سال: 2010
ISSN: 1342-6907,1881-6908
DOI: 10.3169/itej.64.1576