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I think I can easily sign the files however I also need a timestamp from 3rd party vendor. I want to digitally sign + stamp log files including DHCP & mail because of laws here.

UPDATE: I found more info about time stamping. http://www.signfiles.com/timestamping/

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Not sure what you are asking here - are you asking how to get a vendor to verifiable/unforgeable timestamp? –  Rory Alsop Aug 14 '12 at 10:05
    
I want you or somebody else to add timestamp my log files. I prefer a trusted source like SSL certificate issuers. –  Nime Cloud Aug 14 '12 at 10:38
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3 Answers 3

If I understand what you are asking, it seems to me you are looking for a File Integrity Monitoring solution. Are you familiar with FIMs, or have you researched them? Do you think that fits what you are looking for?

Not sure what budget you are working with, but Tripwire is popular FIM vendor.

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Signing and timestamping ZIP archives can be tricky, so if this is what you're planning to do I would suggest you to look into the ASiC standard (ETSI TS 102 918).

Note that signing / timestamping a ZIP file may not have the same legal value as signing / timestamping individual files from the ZIP archive (better check your local jurisprudence first).

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