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Talk:Symmetric-key algorithm

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This is an old revision of this page, as edited by 130.102.71.38 (talk) at 04:18, 5 September 2007. The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Re: Statement "The symmetric-key algorithms can't be used for authentication or non-repudiation purposes." Isn't authentication possible, using a KDC?

Re: authentication is possible, but you need a trusted channel first.. which involves asymmetric cryto... Sounds weird anyway.

Quite a few sections of this document are written in broken or poor English. Someone needs to fix this!

Word usage

In your section marked "speed" I find the following sentence:

"In practice, this means that a quality asymmetric key algorithm is hundreds or thousands of times slower than a quality symmetric key algorithm."

The word "quality" unmodified has no meaning in this sentence. It is like saying "the plane was flying at an altitude." If it is off the ground, it has altitude, but, unmodified, gives no information on how far off the ground. High altitude? Low altitude? I believe you are trying to say "high quality." If this is so, may I suggest saying so? Kjdamrau 06:42, 7 July 2007 (UTC)Ken Damrau[reply]

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