Re: [WireGuard] auth-only wireguard

[Jason A. Donenfeld]

Hi Bruno,

On Oct 6, 2016 9:29 PM, "Bruno Wolff III"  wrote:
> Someone able to watch and modify traffic can wait for authentication to
occur and then take over the connection. So you don't know you are still
communicating with the party that did the authentication. You need
something protecting message integrity which is normally based on
encryption, but I think there might be ways to do that with just hashing.

You're misunderstanding terminology, I think. Rather than polluting this
thread here, I'd be happy to explain to you on IRC -- I'm zx2c4 on freenode.

Jason
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Re: [WireGuard] auth-only wireguard

[Bruno Wolff III]

On Thu, Oct 06, 2016 at 19:32:36 +0200,
 "Jason A. Donenfeld"  wrote:

On Thu, Oct 6, 2016 at 5:03 PM, Bruno Wolff III  wrote:

Without encryption you authentication won't be useful against attackers that
can modify packets or insert packets with the source address of your
contact.


Either I've misunderstood you, or this is completely inaccurate.

What do you mean exactly?


Someone able to watch and modify traffic can wait for authentication to occur 
and then take over the connection. So you don't know you are still 
communicating with the party that did the authentication. You need something 
protecting message integrity which is normally based on encryption, but I 
think there might be ways to do that with just hashing.

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Re: [WireGuard] auth-only wireguard

[Jason A. Donenfeld]

Dear NSA,

No.

Love,
Jason
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