Hello! I'm pleased to announce the first version of the skein package [1]! Skein is a family of fast secure cryptographic hash functions [2]. The skein package provides high-level bindings (using crypto-api [3]) to the optimized Skein C library. Currently we support Skein as a hash function and also Skein as a message authentication code (MAC). The code is well-documented with examples and has many known answer tests (KATs). It currently lives on patch-tag [4]. Hackage will be build the docs soon enough. Meanwhile, here's a short example: Prelude> :s -XOverloadedStrings Prelude> :m Crypto.Skein Crypto.Classes Data.ByteString.Char8 Data.Serialize Prelude Crypto.Skein Crypto.Classes Data.ByteString.Char8 Data.Serialize> encode (hash' "Haskell" :: Skein_512_512) "b\227\213t\170\GS\131w\151\240\160\183\205\US\169\138\&6\239\215\156\227\SI\234\142P\132\182\SOH\180t\203b\147\190\DLE{\168\214\DC1\238\232y\168\161s\207\172\216\a\202\130c$\SYN\asD<\151\201D\138A\SUB" Prelude Crypto.Skein Crypto.Classes Data.ByteString.Char8 Data.Serialize> encode (skeinMAC' "secretkey" "Haskell" :: Skein_512_512) "_i>.Z\129\ENQ\217L\t9BZ\220\163c&9#\135\234A{\181\&2*\149\STX\216_\DC43\bF\189\196D\r ;\208\EOT}\ENQY\147\232\244e/;4\212!\224\US\138\138\234q=1\129\244" Enjoy! =D [1] http://hackage.haskell.org/package/skein [2] http://swww.skein-hash.info/ [3] http://hackage.haskell.org/package/crypto-api [4] https://patch-tag.com/r/felipe/skein/ -- Felipe.