github.com/unix-world/smartgo/threefish (go): Package threefish implements the Threefish tweakable block cipher.  Threefish is a block cipher that was developed as part of the Skein hash function as a submission to the NIST hash function competition. Threefish supports block sizes of 256, 512, and 1024 bits.  For the full Threefish specification, see [1].  Test vectors were extracted from the latest reference implementation [2].  Encryption and decryption loops have been unrolled to contain eight rounds in each iteration. This allows rotation constants to be embedded in the code without being repeated. This practice is described in detail in the paper [1] which also provides detailed performance information.  [1] http://www.skein-hash.info/sites/default/files/skein1.3.pdf [2] http://www.skein-hash.info/sites/default/files/NIST_CD_102610.zip
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