           SPELL=tthsum
         VERSION=1.3.1
     SOURCE_HASH=sha512:eb65fe23ba802d56d1b3b6506df6457810f4ab50f154ac3c2ea274cbb3bfe4f6462087c4a04b6a9b064a346e713e241d601a38c872edd237f0316059680aa0c2
          SOURCE=$SPELL-$VERSION.tar.bz2
SOURCE_DIRECTORY=$BUILD_DIRECTORY/$SPELL-$VERSION
   SOURCE_URL[0]=http://tthsum.devs.nu/pkg/$SOURCE
        WEB_SITE=http://tthsum.devs.nu/
         ENTERED=20111015
      LICENSE[0]=GPL
           SHORT="generates or checks TTH message digests"
cat << EOF
tthsum  generates or checks TTH checksums (roots of the Tiger/THEX hash
tree).  The Merkle Hash Tree, invented by Ralph Merkle, is a hash  con-
struct  that  exhibits desirable properties for verifying the integrity
of files and file subranges in an incremental or out-of-order  fashion.
tthsum  uses  the Tiger hash algorithm, by Ross Anderson and Eli Biham,
for both the internal and the leaf nodes.
EOF
