GOST R 34.11-2012: Streebog Hash Function
This is portable implementation of the GOST R 34.11-2012 hash function.
Digests: 256- and 512-bit.
GOST R 34.11-2012 establishes the hash-function algorithm and the
hash-function calculation procedure for any sequence of binary
symbols used in cryptographic methods of information processing and
information security, including techniques for providing data
integrity and authenticity, and for digital signatures during
information transfer, information processing and information storage
in computer-aided systems.
The hash-function provides operation of digital signature systems
using the asymmetric cryptographic algorithm in compliance with
GOST R 34.10-2012.
RFC 6986: https://tools.ietf.org/html/rfc6986