xChecksum 1.0 for Mac can be downloaded from our website for free. The application lies within Security Tools, more precisely General. This free software for Mac OS X is a product of UCSI.
From the developer:
xChecksum tool computes signatures of generic strings and files, using 32 bytes hexadecimal keys; it is Applescript enabled. With easy and simple interfaces it can be used for error detection, authentication or for generating keys. The user has choice to sign strings, files or verifying signatures of already signed files, using own keys.