An Improved Differential Attack on Full GOST

GOST 28147-89 is a well-known block cipher and the official encryption standard of the Russian Federation. A 256-bit block cipher considered as an alternative for AES-256 and triple DES, having an amazingly low implementation cost and is becoming increasingly popular. Until 2010 researchers unanimously agreed that: "Despite considerable cryptanalytic efforts spent in the past 20 years, GOST is still not broken", and in 2010, it was submitted to ISO 18033 to become a worldwide industrial encryption standard. In 2011, it was suddenly discovered that GOST can be broken and is insecure on more than one account.

Provided by: University College London Topic: Security Date Added: Mar 2012 Format: PDF

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