Checksums on versions

[MarshallJ]

I've been asked to investigate a way to get assurance that the data that 
is checked out of CVS (and updates too) is the data that was checked into 
CVS.

>From web searches and documentation reading I notice there's a Checksum in 
the protocol, but it is only used sometimes. I am using CVS 1.11 on the 
server (linux) and WinCVS 1.2 (which uses cvs 1.11 on windows)

I am wondering if that Checksum is enough to guarantee the data is 
correct, or whether I need additional checksums. If I were to do that, 
would it be possible to use a program on the server or client to check at 
the commit / checkout / update time automatically and report if there is 
an error?

Any help or pointers would be much appreciated.

Regards,

Joshua Marshall