Re: [TLS] What would make TLS cryptographically better for TLS 1.3
"Dan Harkins" <dharkins@lounge.org> Fri, 01 November 2013 22:38 UTC
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Date: Fri, 01 Nov 2013 15:38:06 -0700
From: Dan Harkins <dharkins@lounge.org>
To: Robert Ransom <rransom.8774@gmail.com>
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Cc: "tls@ietf.org" <tls@ietf.org>
Subject: Re: [TLS] What would make TLS cryptographically better for TLS 1.3
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On Fri, November 1, 2013 2:34 pm, Robert Ransom wrote: > On 10/31/13, Nico Williams <nico@cryptonector.com> wrote: > >> - Many fewer nonce bytes and random IVs where possible. Nonce payloads >> should be sent when needed, if needed. For example, to derive a >> session key from an DHE shared secret one does not really need >> nonces. This means that counter modes are better, for example, than >> CBC modes. > > If the server sends a nonce during a DHE/ECDHE key exchange, the > server can safely reuse its DH keypair for multiple clients with no > further design or implementation considerations. I don't believe that's true. If the server reuses its ephemeral D-H key then caveat emptor applies-- it should validate the client's public key, regardless of whether a nonce is sent or not. Dan.
- [TLS] What would make TLS cryptographically bette… Watson Ladd
- Re: [TLS] What would make TLS cryptographically b… Nico Williams
- Re: [TLS] What would make TLS cryptographically b… Dan Harkins
- Re: [TLS] What would make TLS cryptographically b… Nikos Mavrogiannopoulos
- Re: [TLS] What would make TLS cryptographically b… Robert Ransom
- Re: [TLS] What would make TLS cryptographically b… Nico Williams
- Re: [TLS] What would make TLS cryptographically b… Robert Ransom
- Re: [TLS] What would make TLS cryptographically b… Robert Ransom
- Re: [TLS] What would make TLS cryptographically b… Dan Harkins
- Re: [TLS] What would make TLS cryptographically b… Watson Ladd
- Re: [TLS] What would make TLS cryptographically b… Nico Williams
- Re: [TLS] What would make TLS cryptographically b… Robert Ransom
- Re: [TLS] What would make TLS cryptographically b… Nico Williams
- Re: [TLS] What would make TLS cryptographically b… Dan Harkins
- Re: [TLS] What would make TLS cryptographically b… Robert Ransom
- Re: [TLS] What would make TLS cryptographically b… Robert Ransom
- Re: [TLS] What would make TLS cryptographically b… Dan Harkins
- Re: [TLS] What would make TLS cryptographically b… Robert Ransom
- Re: [TLS] What would make TLS cryptographically b… Watson Ladd
- [TLS] removal of nonces [was: What would make TLS… Nikos Mavrogiannopoulos
- Re: [TLS] What would make TLS cryptographically b… Andy Lutomirski
- Re: [TLS] What would make TLS cryptographically b… Nico Williams
- Re: [TLS] removal of nonces [was: What would make… Nico Williams
- Re: [TLS] What would make TLS cryptographically b… Robert Ransom
- Re: [TLS] What would make TLS cryptographically b… Ralf Skyper Kaiser
- Re: [TLS] What would make TLS cryptographically b… Ralf Skyper Kaiser
- Re: [TLS] What would make TLS cryptographically b… Nikos Mavrogiannopoulos
- Re: [TLS] What would make TLS cryptographically b… Yoav Nir
- Re: [TLS] What would make TLS cryptographically b… Robert Ransom
- Re: [TLS] What would make TLS cryptographically b… Ralf Skyper Kaiser
- Re: [TLS] What would make TLS cryptographically b… Ralf Skyper Kaiser
- Re: [TLS] What would make TLS cryptographically b… Watson Ladd
- Re: [TLS] What would make TLS cryptographically b… Yoav Nir
- Re: [TLS] What would make TLS cryptographically b… Ralf Skyper Kaiser
- Re: [TLS] What would make TLS cryptographically b… Martin Rex
- Re: [TLS] What would make TLS cryptographically b… Ralf Skyper Kaiser
- Re: [TLS] What would make TLS cryptographically b… Jeff Jarmoc
- Re: [TLS] What would make TLS cryptographically b… Nico Williams
- Re: [TLS] What would make TLS cryptographically b… Yoav Nir
- Re: [TLS] What would make TLS cryptographically b… Johannes Merkle
- Re: [TLS] What would make TLS cryptographically b… Dan Harkins
- Re: [TLS] What would make TLS cryptographically b… Yoav Nir
- Re: [TLS] What would make TLS cryptographically b… Santosh Chokhani
- Re: [TLS] What would make TLS cryptographically b… Ralf Skyper Kaiser