Kuznyechik (, literally "grasshopper") is a symmetric block cipher. It has a block size of 128 bits and key length of 256 bits. It is defined in the National Standard of the Russian Federation GOST R 34.12-2015 and also in RFC 7801. It has received scrutiny for the structure of its S-boxes, which the authors claim were randomly generated.
Kuznyechik (, literally "grasshopper") is a symmetric block cipher. It has a block size of 128 bits and key length of 256 bits. It is defined in the National Standard of the Russian Federation GOST R 34.12-2015 and also in RFC 7801. It has received scrutiny for the structure of its S-boxes, which the authors claim were randomly generated.
The name of the cipher can be translated from Russian as grasshopper, however, the standard explicitly says that the English name for the cipher is Kuznyechik (). The designers claim that by naming the cipher Kuznyechik they follow the trend of difficult to pronounce algorithm names set up by Rijndael and Keccak. There is also a rumor that the cipher was named after its creators: A. S. Kuzmin, A. A. Nechaev and Company (Russian: Кузьмин, Нечаев и Компания).
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).