Skein is a cryptographic hash function family designed by Bruce Schneier, Niels Ferguson, Stefan Lucks, Doug Whiting, Mihir Bellare, Tadayoshi Kohno, Jon Callas and Jesse Walker.
Skein uses the tweakable block cipher Threefish in UBI chaining mode and can produce hash values of any length. There exists three Skein variants:
Install in your GOPATH: go get -u github.com/aead/skein