em-gost is emscripten-compiled c code and convient wrappers.
- DSTU Gost 34311-95 hash function
- DSTU Gost 28147-2009 CFB mode block cipher
- DSTU Gost 28147 key wrapper as specified by DSTSZI [0]
- Private key containers (both legacy and standartized)
[0] http://dstszi.kmu.gov.ua/dstszi/control/uk/publish/article?showHidden=1&art_id=90096&cat_id=38837