RE: [TLS] Comments on TLS identity protection
Peter Williams <home_pw@msn.com> Wed, 27 December 2006 20:23 UTC
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From: Peter Williams <home_pw@msn.com>
To: EKR <ekr@networkresonance.com>
Subject: RE: [TLS] Comments on TLS identity protection
Date: Wed, 27 Dec 2006 12:23:04 -0800
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> > There's no way in TLS to currently have a NULL MAC algorithm.> > I doubt there is lilkely to be one soon. if we look at the text of SSLv3, it discussed null mac functions in the architecture:- If the CipherSuite is SSL_NULL_WITH_NULL_NULL, encryption consists of the identity operation (i.e., the data is not encrypted and the MAC size is zero implying that no MAC is used). SSLCiphertext.length is SSLCompressed.length plus CipherSpec.hash_size. I'd claim that a complete, SSL-patent implementing state machine (E.g TLS ) therefore supports null MAC algorithms. As TLS implies SSLv3 fallback capability...the capability needs to be provided to be complete. I think we can allow for "no MAC is used" (spec) to be equivalent to "NULL MAC algorithm" (peter-speak), linguistically. if we consider "The encryption and MAC algorithms are set to SSL_NULL_WITH_NULL_NULL at the beginning of the SSL Handshake Protocol, indicating that no message authentication or encryption is performed. The handshake protocol is used to negotiate a more secure CipherSpec and to generate cryptographic keys. " So perhaps the truthful political-appropriate statement would be that https (vs TLS) supports NULL MAC (as https tends to include the SSLv3 fallback modes of TLS) _________________________________________________________________ Fixing up the home? Live Search can help. http://imagine-windowslive.com/search/kits/default.aspx?kit=improve&locale=en-US&source=wlmemailtaglinenov06
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- [TLS] Comments on TLS identity protection Eric Rescorla
- Re: [TLS] Comments on TLS identity protection Eric Rescorla
- Re: [TLS] Comments on TLS identity protection Martin Rex
- Re: [TLS] Comments on TLS identity protection Martin Rex
- Re: [TLS] Comments on TLS identity protection badra
- Re: [TLS] Comments on TLS identity protection Eric Rescorla
- Re: [TLS] Comments on TLS identity protection Kyle Hamilton
- Re: [TLS] Comments on TLS identity protection Eric Rescorla
- Re: [TLS] Comments on TLS identity protection Martin Rex
- Re: [TLS] Comments on TLS identity protection badra
- RE: [TLS] Comments on TLS identity protection Peter Williams
- Re: [TLS] Comments on TLS identity protection Eric Rescorla
- RE: [TLS] Comments on TLS identity protection Peter Williams
- RE: [TLS] Comments on TLS identity protection Peter Williams
- Re: [TLS] Comments on TLS identity protection badra
- RE: [TLS] Comments on TLS identity protection Pasi.Eronen
- Re: [TLS] Comments on TLS identity protection badra
- RE: [TLS] Comments on TLS identity protection Pasi.Eronen
- Re: [TLS] Comments on TLS identity protection Bodo Moeller
- Re: [TLS] Comments on TLS identity protection badra
- RE: [TLS] Comments on TLS identity protection Pasi.Eronen
- Re: [TLS] Comments on TLS identity protection badra
- RE: [TLS] Comments on TLS identity protection Pasi.Eronen
- Re: [TLS] Comments on TLS identity protection Eric Rescorla
- RE: [TLS] Comments on TLS identity protection Peter Williams
- Re: [TLS] Comments on TLS identity protection badra
- Re: [TLS] Comments on TLS identity protection Eric Rescorla
- Re: [TLS] Comments on TLS identity protection badra
- Re: [TLS] Comments on TLS identity protection Martin Rex
- Re: [TLS] Comments on TLS identity protection Badra
- Re: [TLS] Comments on TLS identity protection Omirjan Batyrbaev
- Re: [TLS] Comments on TLS identity protection home_pw
- Re: [TLS] Comments on TLS identity protection home_pw
- Re: [TLS] Comments on TLS identity protection EKR
- Re: [TLS] Comments on TLS identity protection home_pw
- Re: [TLS] Comments on TLS identity protection home_pw
- Re: [TLS] Comments on TLS identity protection Martin Rex
- RE: [TLS] Comments on TLS identity protection Peter Williams
- Re: [TLS] Comments on TLS identity protection EKR
- Re: [TLS] Comments on TLS identity protection Martin Rex
- Re: [TLS] Comments on TLS identity protection home_pw
- Re: [TLS] Comments on TLS identity protection EKR
- Re: [TLS] Comments on TLS identity protection home_pw
- Re: [TLS] Comments on TLS identity protection EKR
- Re: [TLS] Comments on TLS identity protection home_pw