// GOST 28147-89: Encryption, Decryption, and Message Authentication Code (MAC) Algorithms
// https://tools.ietf.org/html/rfc5830
//
// GOST R 34.12-2015: Block Cipher "Magma"
// https://tools.ietf.org/html/rfc8891
//
// GOST R 34.12-2015: Block Cipher "Kuznyechik"
// https://tools.ietf.org/html/rfc7801
//
// Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms
// https://tools.ietf.org/html/rfc4357
// GOST 28147-89
// https://en.wikipedia.org/wiki/GOST_(block_cipher)
//