MD5: (lsof_4.78.bz2) = 0b05aa7ed071de7df8e711ab7f07cb8d sum: 12920 234 lsof_4.78.bz2 You may need to use sum's -r option (or cksum -o1) to get a matching result. Even then the block count may not match, depending on the block size your sum (or cksum) program reports. The sum program that generated the above value considers block size to be 512. The most reliable authentication method is to use GPG with the detached certificate in lsof_4.78.sig -- e.g., $ gpg --verify lsof_4.78.sig lsof_4.78.bz2 Victor A. Abell Tue Apr 24 12:52:55 EDT 2007