tree ccb86b7155ebf0f1a8790c4facc8de16cfc23277
parent 3e1eb16744e7ab9e58279144b36f8d7e1c228707
author Zhenkai Zhu <zhenkai@cs.ucla.edu> 1334005830 -0700
committer Zhenkai Zhu <zhenkai@cs.ucla.edu> 1334005830 -0700

change hash function to sha256