Abstract
We present a second preimage attack on SHAMATA-512, which is a hash function of 512-bit output and one of the first round candidates of the SHA-3 competition. The attack controls several message blocks to fix some variables of internal state and uses a meet-in-the-middle approach to find second preimages. The time complexity is about 2452.7 computations of the step function and the memory complexity is about 2451.4 blocks of 128 bits.
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Ideguchi, K., Watanabe, D. (2009). Second Preimage Attack on SHAMATA-512. In: Roy, B., Sendrier, N. (eds) Progress in Cryptology - INDOCRYPT 2009. INDOCRYPT 2009. Lecture Notes in Computer Science, vol 5922. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-10628-6_12
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DOI: https://doi.org/10.1007/978-3-642-10628-6_12
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