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Re: [TLS] Quest for Unified Solution to TLS Renegotiation

Michael D'Errico <mike-list@pobox.com> Thu, 26 November 2009 03:49 UTC

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Date: Wed, 25 Nov 2009 19:50:27 -0800
From: Michael D'Errico <mike-list@pobox.com>
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Subject: Re: [TLS] Quest for Unified Solution to TLS Renegotiation
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> Eric Rescorla wrote:
> 
>>>    3) Incorporate previous verify_data into Finished calc.
>>
>> I'm not happy with this, actually.

Would this work:

      Finished  =  verify_data  XOR  previous_verify_data


Not sure if anyone has suggested that already....

Does it work if you renegotiate twice or more times?

Also how to handle if renegotiation changes TLS version (SSLv3
verify_data is 36 bytes long).


Mike

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