GtkHash is a desktop utility for computing message digests or checksums. Most well-known hash functions are supported, including MD5, SHA1, SHA2 (SHA256/SHA512), SHA3 and BLAKE2.

Features:

• support for verifying checksum files from sfv, sha256sum, etc.
• keyed hashing (HMAC)
• parallel/multi-threaded hash calculation
• remote file access using GIO/GVfs
• file manager integration
• small and fast

Home page: https://github.com/gtkhash/gtkhash