Streebog is a family of two hash functions, Streebog-256 and Streebog-512, that produce output 256-bit or 512-bit hash respectively from a bit string of arbitrary size using the Merkle-Damgård construction [REF].
The function was named Streebog after Stribog, the god of rash wind in ancient Slavic mythology,[REF] and is often referred by this name, even though it is not explicitly mentioned in the text of the standard [REF].