Differential power analysis of stream ciphers with LFSRs
نویسندگان
چکیده
منابع مشابه
Differential Power Analysis of Stream Ciphers
Side-channel attacks on block ciphers and public key algorithms have been discussed extensively. However, there is only sparse literature about side-cannel attacks on stream ciphers. The few existing references mainly treat timing [8] and template attacks [10], or provide a theoretical analysis [6], [7] of weaknesses of stream cipher constructions. In this paper we present attacks on two focus ...
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In this paper we present a general framework for the application of the ideas of differential cryptanalysis to stream ciphers. We demonstrate that some differences in the key (or the initial state or the plaintext) are likely to cause predicted differences in the key stream or in the internal state. These stream differences can then be used to analyze the internal state of the cipher and retrie...
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This paper shows that Py and Pypy are practically insecure. If one key is used with about 2 IVs with special differences, with high probability two identical keystreams will appear. This can be exploited in a key recovery attack. For example, for a 16-bye key and a 16-byte IV, 2 chosen IVs can reduce the effective key size to 3 bytes. For a 32-bye key and a 32-byte IV, the effective key size is...
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A fault attack is a powerful cryptanalytic tool which can be applied to many types of cryptosystems which are not vulnerable to direct attacks. The research literature contains many examples of fault attacks on public key cryptosystems and block ciphers, but surprisingly we could not find any systematic study of the applicability of fault attacks to stream ciphers. Our goal in this paper is to ...
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Stream ciphers are fast cryptographic primitives to provide confidentiality of electronically transmitted data. They can be very suitable in environments with restricted resources, such as mobile devices or embedded systems. Practical examples are cell phones, RFID transponders, smart cards or devices in sensor networks. Besides efficiency, security is the most important property of a stream ci...
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ژورنال
عنوان ژورنال: Computers & Mathematics with Applications
سال: 2013
ISSN: 0898-1221
DOI: 10.1016/j.camwa.2012.02.024