I’ve been recently looking into some checksum tools and here are the ones that I found to be very useful –

  • jdigest, a Java GUI tool that generates and checks MD5 and SHA sums
  • Jacksum, a Java API, usable both through a GUI and a CLI, which incorporates many checksum implementations and allows to extend with as many as you need.
  • jcksum, a Java library, that can be used by developers in Java applications to calculate checksums using different algorithms.

Ofcourse, you can use the following tools in Unix to generate 32-bit CRC or MD5.

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