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From: Baptiste Jonglez <baptiste@bitsofnetworks.org>
To: wireguard@lists.zx2c4.com
Subject: Introduction of XChaCha20Poly1305 (Was: [ANNOUNCE] Snapshot `0.0.20161223` Available)
Date: Sun, 25 Dec 2016 23:42:25 +0100	[thread overview]
Message-ID: <20161225224225.GA5081@lud.home> (raw)
In-Reply-To: <ffffffffac503169@frisell.zx2c4.com>

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Hi,

On Fri, Dec 23, 2016 at 09:15:28PM +0100, Jason A. Donenfeld wrote:
>   * cookies: use xchacha20poly1305 instead of chacha20poly1305
>   
>   This is a big change. To simplify the security analysis, improve speed, and
>   simplify the code, we now use XChaChaPoly1305 with a random 24-byte nonce,
>   instead of using a random 32-byte salt.

- Is this backwards compatible?

- Could you provide references describing XChaCha20Poly1305 and the
  differences with ChaCha20Poly1305?

- What part of the protocol does this change?  Is it just the initial key
  exchange?

Thanks,
Baptiste

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  parent reply	other threads:[~2016-12-25 22:34 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-23 20:15 [ANNOUNCE] Snapshot `0.0.20161223` Available Jason A. Donenfeld
2016-12-23 20:19 ` Dave Taht
2016-12-23 20:22   ` Jason A. Donenfeld
2016-12-25 22:42 ` Baptiste Jonglez [this message]
2016-12-25 22:55   ` Introduction of XChaCha20Poly1305 (Was: [ANNOUNCE] Snapshot `0.0.20161223` Available) Jason A. Donenfeld

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