Monthly Archives: December 2016

Asmcodes: Bel-T Block Cipher

Introduction Bel-T is a block cipher that was adopted as a standard by the Republic of Belarus in 2011 and defined in STB 34.101.31-2011. It takes 128-bits of data and encrypts using an n-bit key (where n can be 128, … Continue reading

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Asmcodes: Kuznyechik “Grasshopper” Block cipher

Introduction Kuznyechik (Grasshopper in Russian) is a 128-bit block cipher supporting 256-bit keys defined in the National Standard of the Russian Federation GOST R 34.12-2015 and RFC 7801 published in 2015 to supercede GOST 28147-89 cipher also referred to as … Continue reading

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