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| Subject: | [CISSP-D] Symmetric Key and authentication. |
|---|---|
| Date: | Wed, 4 May 2005 21:41:24 -0700 (PDT) |
One of the books I read gave example of how symmetric encryption can be used
for authenticating to another entity with whom you have a shared secret.
Yet, the Shon Harris books says that symmetric encryption only provided
Confidentiality and integrity but not auth and non repudiation.
Who is right?
Thanks
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