> MD5, Utilities, RSA Data Security MD5 message-digest algorithm  E MD5 is a tool used to verify file downloads and for checking for file G integrity in the event of accidental or intentional file modifications.     See RFC 1321 for details of MD5.   	--   E Note that the MD5 source code exposes a known restriction within the  F OpenVMS VAX VCG C compiler code generator (used by VAX C and DEC C on D OpenVMS VAX), and DEC C compilation requires that the disjoint code H optimization be disabled.  See the DEC C V6.2 release notes for details.  