Download Algebraic Informatics: 5th International Conference, CAI by Gul Agha (auth.), Traian Muntean, Dimitrios Poulakis, Robert PDF

By Gul Agha (auth.), Traian Muntean, Dimitrios Poulakis, Robert Rolland (eds.)

This e-book constitutes the refereed complaints of the fifth foreign convention on Algebraic Informatics, CAI 2013, held in Porquerolles, France in September 2013. the nineteen revised complete papers awarded including five invited articles have been conscientiously reviewed and chosen from quite a few submissions. The papers hide issues equivalent to facts types and coding idea; basic points of cryptography and safeguard; algebraic and stochastic types of computing; common sense and application modelling.

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Additional resources for Algebraic Informatics: 5th International Conference, CAI 2013, Porquerolles, France, September 3-6, 2013. Proceedings

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A simple power analysis attack on a McEliece cryptoprocessor. Journal of Cryptographic Engineering 1, 29–36 (2011) 81. : Wet paper codes and the dual distance in steganography. Advances in Mathematics of Communications 6(3), 237–285 (2012) 82. : Steganography from a coding theory point of view. Series on Coding Theory and Cryptology, vol. 8. World Scientific Publishing Co. Pte. Ltd. (2013) 83. : Knapsack-type cryptosystems and algebraic coding theory. Problems Control Inform. Theory 15(2), 159–166 (1986) 84.

Let t be the Hamming weight of e (on average t k/ε). 2. Let m ˜ a message of lenght t and x˜ the cover-data computed from the second ˜ x + e˜) = m LSB of the cover-medium. Find e˜ such that H(˜ ˜ and e˜i = 0 for ˜ is obtained from the t first rows of H). i ∈ W (where H The value t must be communicated to the receiver, a small portion of the cover image can be used to embed this value. Notice that instead of flipping a bit (or adding 1 if the bit is even and -1 is the bit is odd) , we now modify a pixel by adding +1 or -1 regardless its parity.

Finally, depending on the parameters, the transmission rate (number of information symbols/ number of transmitted symbols) which is equal to log2 nt /(n − k) can be better or worst that those of McEliece (k/n). Table 8 sums up these differences and makes a comparison with the RSA cryptosystem when used with a 2048 modulus and a public exponent e equal to 216 + 1 as in openssl toolbox (the complexity is given as the number of binary operations to perform per information bit): Table 8. 63 40555 Decryption complexity 2311 8450 6557176, 5 Remark 5.

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