Skein
Hash function
Skein is a cryptographic hash function and one of five finalists in the NIST hash function competition. Entered as a candidate to become the SHA-3 standard, the successor of SHA-1 and SHA-2, it ultimately lost to NIST hash candidate Keccak. Wikipedia
Digest sizes: arbitrary
Rounds: 72 (256 & 512 block size), 80 (1024 block size)