GtkHash a GTK+ utility for testing digests or checksums. Currently supported hash functions include MD5, MD6, SHA1, SHA256, SHA512, RIPEMD, TIGER and WHIRLPOOL. Uses mhash libraries.
GtkHash is built into Puppy 5.2x Lucid go to:
PuppyMenu > Utilities > Utilities > GtkHash
It is available for Puppy 5.3 Slacko as part of a LupufySlacko package.