C

checksum-validator

PyCheck is a Python script that calculates the checksum of one file, and then compares it against either another file, or against a checksum you provide, such as when a website provides a checksum for you to validate a download against.

The binary releases and packages can be found on Sourceforge at: https://sourceforge.net/projects/checkmd5/

Some of the files posted there will be digitally signed with my personal PGP key, which you can download here: https://marcusadams.me/keys.html

If you'd like to donate there's several ways to do so:

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A simple utility that calculates the CRC-32 checksum for each of the given files or for data from standard input.

Command-line utility for Windows which generates, verifies, and signs hash digests for your project.