Re: Length of pre-shared key

Dan Harkins <dharkins@tibernian.com> Mon, 25 February 2002 17:39 UTC

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To: juha.ollila@nokia.com
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Subject: Re: Length of pre-shared key
In-Reply-To: Your message of "Mon, 25 Feb 2002 16:41:20 +0200." <B49318639A71D3418DC1005FD40B36100EB4B9@ouebe005.NOE.Nokia.com>
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Date: Mon, 25 Feb 2002 09:06:33 -0800
From: Dan Harkins <dharkins@tibernian.com>
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  IKE uses the pre-shared key as the key to an HMAC. RFC2104 specifies
that the key to an HMAC should not be less than the output of the under-
lying hash function. So if you're using HMAC-SHA that's 20 bytes.

  Dan.

On Mon, 25 Feb 2002 16:41:20 +0200 you wrote
> 	Hello!
> 
> Have IPsec and IKE specifications any requirements about the pre-shared keys?
> I didn't find the required length of pre-shared key.
> 
> Best Regards,
> Juha Ollila

Length of pre-shared key juha.ollila
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Re: Length of pre-shared key Dan Harkins
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Re: Length of pre-shared key Dan Harkins