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In August 2012, the Streebog hash function was selected as the new Russian cryptographic hash standard (GOST R 34.11-2012). In this paper, we investigate the new standard in the context of malicious hashing and present a practical collision for a malicious version of the full hash function. In particular, we apply the rebound attack to find three solutions for three different differential paths for four rounds, and using the freedom of the round constants we connect them to obtain a collisiondoi:10.1049/iet-ifs.2014.0540 fatcat:vrddduarmvgkzexblmg4ox4ne4