GtkHash
GTK+ utility for computing checksums and more
GtkHash is an application for computing file checksums, or message digests. It's designed to be an easy to use, graphical alternative to command-line programs such as md5sum.
Supported hash functions include MD5, SHA1, SHA256, SHA512 and CRC32.
GtkHash is a small GTK+ utility which allows users to compute message digests or checksums using the mhash library. Currently supported hash functions include MD5, MD6, SHA1, SHA256, SHA512, RIPEMD, TIGER and WHIRLPOOL.
How to install GtkHash in Ubuntu
If you are on a supported distro, you can install the application through software center by clicking the below link.
If the above link not working, run the below command in terminal to install gtkhash in Ubuntu
sudo apt install gtkhash