By Andreas Gornik, Ivan Stoychev, Jürgen Oehm (auth.), Andrey Bogdanov, Somitra Sanadhya (eds.)
This publication constitutes the refereed complaints of the second one overseas convention on safety, privateness and utilized Cryptography Engineering held in Chennai, India, in November 2012.
The eleven papers offered have been rigorously reviewed and chosen from sixty one submissions. The papers are equipped in topical sections on symmetric-key algorithms and cryptanalysis, cryptographic implementations, part channel research and countermeasures, fault tolerance of cryptosystems, bodily unclonable services, public-key schemes and cryptanalysis, research and layout of safeguard protocol, protection of platforms and purposes, high-performance computing in cryptology and cryptography in ubiquitous devices.
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Additional resources for Security, Privacy, and Applied Cryptography Engineering: Second International Conference, SPACE 2012, Chennai, India, November 3-4, 2012. Proceedings
These additions are across two chunks of 5 bits and so additional carry bits need to be accounted. (b/4) = b2 /16 calculations. Finding a correct single match gives the unknown bits of bytes 0 and 2 of P1 . Finding more than one match means that we have a set of values out of which one is the correct candidate. Considering the HC-128 keystream is uniformly random, the frequency of such ties would be very low. The procedure is repeated for all elements of P and Q array. 3 Finding the Remaining Sixteen Bits for Each Element Since bytes 1 and 3 of the array elements are never used in h1 (or h2 ), obtaining any information about these bits is not possible by the above cache analysis.
Data once stored in the cache, can be further used by accessing the cached copy rather than 34 G. Paul and S. Raizada by re-fetching from the RAM. If the CPU ﬁnds the data it needs in the cache, a cache hit is said to occur. Otherwise a cache miss occurs and the cache must be immediately loaded with the requisite data from the RAM. Cache management in modern processors divides the available cache memory into blocks of b bytes. For a given block, all the b bytes must be loaded together. To ensure consistency between the data in the RAM and the cache, a record of cache blocks being loaded into the cache is maintained.
2 Description of HC-128 We summarize the key points of the structure and the keystream generation of the cipher below. The following operators are used in HC-128. + : addition modulo 232 . : subtraction modulo 512. Impact of Extending Side Channel Attack on Cipher Variants 35 ⊕ : bit-wise exclusive OR. : bit-string concatenation. : right shift operator (deﬁned on 32-bit numbers). : left shift operator (deﬁned on 32-bit numbers). ≫ : right rotation operator (deﬁned on 32-bit numbers). ≪ : left rotation operator (deﬁned on 32-bit numbers).
Security, Privacy, and Applied Cryptography Engineering: Second International Conference, SPACE 2012, Chennai, India, November 3-4, 2012. Proceedings by Andreas Gornik, Ivan Stoychev, Jürgen Oehm (auth.), Andrey Bogdanov, Somitra Sanadhya (eds.)