>MD5, Utilities, RSA Data Security MD5 message-digest algorithmEMD5 is a tool used to verify file downloads and for checking for fileGintegrity in the event of accidental or intentional file modifications. See RFC 1321 for details of MD5. --ENote that the MD5 source code exposes a known restriction within the FOpenVMS VAX VCG C compiler code generator (used by VAX C and DEC C on DOpenVMS VAX), and DEC C compilation requires that the disjoint code Hoptimization be disabled. See the DEC C V6.2 release notes for details.