It is a bad question as I have mentioned.<br><br>They are asking you mainly which of the following is not in the CIA. Authenticity is NO within the CIA but is achieved through crypto.<br><br>Authenticity as mentioned can be achieve with MAC (Message Authenticaiton Code) if you make use of Symmetric encyrption and it can be achive using Digital Signature if you make use of public key crypto.<br>
<br>Take care<br><br>Clement<br><br clear="all">Clément Dupuis, CD<br>CISSP, GCFW, GCIA, Security+, Q/EH, Q/SA, Q/PTL, CEH, ECSA, CCSA, MBNS, MBIS, MBHS, CCSE, ACE<br>----------------------------------------------------------------------------------------------<br>
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<br><br><div class="gmail_quote">On Thu, Mar 4, 2010 at 14:28, Kenoyer, Greg <span dir="ltr"><<a href="mailto:Greg.Kenoyer@hp.com">Greg.Kenoyer@hp.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
> Message: 1<br>
> Date: Thu, 4 Mar 2010 13:17:51 -0500<br>
> From: <a href="mailto:twitwicki@hannaford.com">twitwicki@hannaford.com</a><br>
> To: <a href="mailto:cisspstudy@cccure.org">cisspstudy@cccure.org</a><br>
> Subject: Re: [CCCure CISSP] CISSPstudy Digest, Vol 21, Issue 2<br>
> Message-ID:<br>
> <<a href="mailto:OF701F29C4.AB316653-ON852576DC.0063E305-852576DC.0064834D@hannaford.com">OF701F29C4.AB316653-ON852576DC.0063E305-852576DC.0064834D@hannaford.com</a>><br>
><br>
> Content-Type: text/plain; charset=US-ASCII<br>
><br>
> All,<br>
> Got the notification that I passed the exam!<br>
> :<br>
> Tom Witwicki, CIPP, CISM<br>
<br>
Tom, Congratulations. May we soon join you!<br>
<br>
Q for you: I assume that you used the free CCCure exams, what score did you feel was adequate for you preparation?<br>
<br>
> Message: 6<br>
> Date: Wed, 3 Mar 2010 20:01:16 -0800 (PST)<br>
> From: Nimal Gunarathna <<a href="mailto:ng949@yahoo.com">ng949@yahoo.com</a>><br>
> To: <a href="mailto:cisspstudy@cccure.org">cisspstudy@cccure.org</a><br>
> Subject: Re: [CCCure CISSP] CISSPstudy Digest, Vol 21, Issue 1<br>
> Message-ID: <<a href="mailto:665356.38271.qm@web33901.mail.mud.yahoo.com">665356.38271.qm@web33901.mail.mud.yahoo.com</a>><br>
> Content-Type: text/plain; charset="iso-8859-1"<br>
><br>
> Thanks for your comments. I have another question for ya'll..In ISC2 book<br>
> crypto chapter has the following question:<br>
> Cryptography supports all of the core principles of information security except:<br>
> a. Availability<br>
> b. Confidentiality<br>
> c. Integrity<br>
> d. Authenticity<br>
> The book answer is d.<br>
> But I think this is a typo... correct answer should be a.<br>
><br>
> Confidentiality is provided through encryption..<br>
> Integrity is provided<br>
> through hashing..<br>
> Authenticity is provided through digital signatures..<br>
> Any comments?<br>
<br>
Is this possibly a trick question?<br>
<br>
What are the core principles of InfoSec? The CIA triad.<br>
<br>
CIA as in Confidentiality, Integrity and Availability.<br>
<br>
NOT as in Authenticity.<br>
<br>
Greg Kenoyer<br>
<br>
<br>
<br>
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</blockquote></div><br>