The Encryption Algorithms GOST28147a89aIDEA8a4 and GOST28147a89aRFWKIDEA8a4
In the paper created a new encryption algorithms GOST28147–89–IDEA8–4 and GOST28147–89–RFWKIDEA8– 4 based on networks IDEA8–4 and RFWKIDEA8–4, with the use the round function of the encryption algorithm GOST 28147–89. The block length of created block encryption algorithm is 256 bits, the number of rounds is 8, 12 and 16.