Re: [TLS] Privacy considerations - identity hiding from eavesdropping in (D)TLS

2015-08-28 Thread Viktor Dukhovni
On Fri, Aug 28, 2015 at 04:27:28PM +0200, Viktor S. Wold Eide wrote: > > I don't think this matches most TLS use cases very well, since the client > > generally isn't authenticated at all, so there's no point in the server > > progressively > > revealing more. > > > > > Although the client general

Re: [TLS] Privacy considerations - identity hiding from eavesdropping in (D)TLS

2015-08-28 Thread Viktor S. Wold Eide
On Thu, Aug 27, 2015 at 1:18 PM, Eric Rescorla wrote: > > > On Thu, Aug 27, 2015 at 2:14 AM, Viktor S. Wold Eide < > viktor.s.wold.e...@gmail.com> wrote: > >> On Mon, Aug 24, 2015 at 11:17 PM, Eric Rescorla wrote: >> >>> >>> >>> TLS 1.3 encrypts both the client's and server's certificates alread

Re: [TLS] Privacy considerations - identity hiding from eavesdropping in (D)TLS

2015-08-27 Thread Eric Rescorla
On Thu, Aug 27, 2015 at 2:14 AM, Viktor S. Wold Eide < viktor.s.wold.e...@gmail.com> wrote: > On Mon, Aug 24, 2015 at 11:17 PM, Eric Rescorla wrote: > >> >> >> TLS 1.3 encrypts both the client's and server's certificates already. >> The server's certificate is secure only against passive attack.

Re: [TLS] Privacy considerations - identity hiding from eavesdropping in (D)TLS

2015-08-27 Thread Eric Rescorla
On Thu, Aug 27, 2015 at 1:37 AM, Viktor S. Wold Eide < viktor.s.wold.e...@gmail.com> wrote: > > On Mon, Aug 24, 2015 at 11:17 PM, Eric Rescorla wrote: > >> >> >> On Mon, Aug 24, 2015 at 1:56 PM, Viktor S. Wold Eide < >> viktor.s.wold.e...@gmail.com> wrote: >> >>> Hi, >>> >>> I am looking for a wa

Re: [TLS] Privacy considerations - identity hiding from eavesdropping in (D)TLS

2015-08-27 Thread Viktor S. Wold Eide
On Mon, Aug 24, 2015 at 11:17 PM, Eric Rescorla wrote: > > > TLS 1.3 encrypts both the client's and server's certificates already. > The server's certificate is secure only against passive attack. The > client's is encrypted with a key that the client can authenticate as > belonging to the server

Re: [TLS] Privacy considerations - identity hiding from eavesdropping in (D)TLS

2015-08-27 Thread Viktor S. Wold Eide
On Tue, Aug 25, 2015 at 10:43 AM, Pascal Urien wrote: > Hi > > a working solution fot TLS 1.0,1.1, 1.2, DTLS 1.0, 1.2 is to encrypt > the client certificat with an extra key computed from the master > secret > > see > > https://tools.ietf.org/html/draft-urien-badra-eap-tls-identity-protection-01

Re: [TLS] Privacy considerations - identity hiding from eavesdropping in (D)TLS

2015-08-27 Thread Viktor S. Wold Eide
On Tue, Aug 25, 2015 at 12:19 AM, Badra wrote: > Hi, > > Another solution was approved for publication as experimental by IESG in > 2009 but I declined to process with Pasi Eronen way (previous WG co-Chair) > of publishing the document. > > It is available at > https://tools.ietf.org/html/draft-h

Re: [TLS] Privacy considerations - identity hiding from eavesdropping in (D)TLS

2015-08-27 Thread Viktor S. Wold Eide
On Mon, Aug 24, 2015 at 11:17 PM, Eric Rescorla wrote: > > > On Mon, Aug 24, 2015 at 1:56 PM, Viktor S. Wold Eide < > viktor.s.wold.e...@gmail.com> wrote: > >> Hi, >> >> I am looking for a way to achieve identity hiding for DTLS 1.2, which >> also hopefully can be used in (D)TLS 1.3, when availab

Re: [TLS] Privacy considerations - identity hiding from eavesdropping in (D)TLS

2015-08-25 Thread Pascal Urien
Hi a working solution fot TLS 1.0,1.1, 1.2, DTLS 1.0, 1.2 is to encrypt the client certificat with an extra key computed from the master secret see https://tools.ietf.org/html/draft-urien-badra-eap-tls-identity-protection-01 Rgs Pascal 2015-08-24 22:56 UTC+02:00, Viktor S. Wold Eide : > Hi, >

Re: [TLS] Privacy considerations - identity hiding from eavesdropping in (D)TLS

2015-08-24 Thread Viktor Dukhovni
On Mon, Aug 24, 2015 at 09:56:50PM -0400, Paul Wouters wrote: > >>Not having read the TLS 1.3 draft, in IKE parties can send a hash of the > >>CAs they trust, so unless you receive a hash of a known CA to you, you > >>can withold your own certificate from being sent. > >> > >>Is a similar mechanis

Re: [TLS] Privacy considerations - identity hiding from eavesdropping in (D)TLS

2015-08-24 Thread Paul Wouters
On Tue, 25 Aug 2015, Viktor Dukhovni wrote: Not having read the TLS 1.3 draft, in IKE parties can send a hash of the CAs they trust, so unless you receive a hash of a known CA to you, you can withold your own certificate from being sent. Is a similar mechanism not planned for TLS 1.3? This wo

Re: [TLS] Privacy considerations - identity hiding from eavesdropping in (D)TLS

2015-08-24 Thread Viktor Dukhovni
On Mon, Aug 24, 2015 at 05:33:18PM -0400, Paul Wouters wrote: > On Mon, 24 Aug 2015, Eric Rescorla wrote: > > >TLS 1.3 encrypts both the client's and server's certificates already. > >The server's certificate is secure only against passive attack. > > Not having read the TLS 1.3 draft, in IKE pa

Re: [TLS] Privacy considerations - identity hiding from eavesdropping in (D)TLS

2015-08-24 Thread Badra
Hi, Another solution was approved for publication as experimental by IESG in 2009 but I declined to process with Pasi Eronen way (previous WG co-Chair) of publishing the document. It is available at https://tools.ietf.org/html/draft-hajjeh-tls-identity-protection-09 and it works for TLS and DTLS

Re: [TLS] Privacy considerations - identity hiding from eavesdropping in (D)TLS

2015-08-24 Thread Eric Rescorla
On Mon, Aug 24, 2015 at 2:33 PM, Paul Wouters wrote: > On Mon, 24 Aug 2015, Eric Rescorla wrote: > > TLS 1.3 encrypts both the client's and server's certificates already. >> The server's certificate is secure only against passive attack. >> > > Not having read the TLS 1.3 draft, in IKE parties ca

Re: [TLS] Privacy considerations - identity hiding from eavesdropping in (D)TLS

2015-08-24 Thread Paul Wouters
On Mon, 24 Aug 2015, Eric Rescorla wrote: TLS 1.3 encrypts both the client's and server's certificates already. The server's certificate is secure only against passive attack. Not having read the TLS 1.3 draft, in IKE parties can send a hash of the CAs they trust, so unless you receive a hash

Re: [TLS] Privacy considerations - identity hiding from eavesdropping in (D)TLS

2015-08-24 Thread Eric Rescorla
On Mon, Aug 24, 2015 at 1:56 PM, Viktor S. Wold Eide < viktor.s.wold.e...@gmail.com> wrote: > Hi, > > I am looking for a way to achieve identity hiding for DTLS 1.2, which also > hopefully can be used in (D)TLS 1.3, when available. > > From what I understand, for (D)TLS 1.2 it would be possible to

[TLS] Privacy considerations - identity hiding from eavesdropping in (D)TLS

2015-08-24 Thread Viktor S. Wold Eide
Hi, I am looking for a way to achieve identity hiding for DTLS 1.2, which also hopefully can be used in (D)TLS 1.3, when available. >From what I understand, for (D)TLS 1.2 it would be possible to perform an anonymous unencrypted handshake and then to renegotiate the connection with authentication