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Lecture Notes in Computer Science
The GOST block cipher is the Russian encryption standard published in 1989. In spite of considerable cryptanalytic efforts over the past 20 years, a key recovery attack on the full GOST block cipher without any key conditions (e.g., weak keys and related keys) has not been published yet. In this paper, we show a first single-key attack, which works for all key classes, on the full GOST block cipher. To construct the attack, we develop a new attack framework called Reflection-Meet-inthe-Middledoi:10.1007/978-3-642-21702-9_17 fatcat:tmh2q2hyubddhfhzymkn7ub4oy