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[w3c/webauthn] 2a5029: Add note about decoding U2F keyhandles. (#1272)

From: Adam Langley <noreply@github.com>
Date: Wed, 21 Aug 2019 12:14:30 -0700
To: public-webauthn@w3.org
Message-ID: <w3c/webauthn/push/refs/heads/master/fc01ed-2a5029@github.com>
  Branch: refs/heads/master
  Home:   https://github.com/w3c/webauthn
  Commit: 2a50293d3d79e718606def99b2776b8c6bbdb15e
      https://github.com/w3c/webauthn/commit/2a50293d3d79e718606def99b2776b8c6bbdb15e
  Author: Adam Langley <agl@imperialviolet.org>
  Date:   2019-08-21 (Wed, 21 Aug 2019)

  Changed paths:
    M index.bs

  Log Message:
  -----------
  Add note about decoding U2F keyhandles. (#1272)

* Add note about decoding U2F keyhandles.

U2F key handles need to be base64url decoded before being used as
ArrayBuffers in WebAuthn calls. This isn't completely obvious so this
change adds a clarification to the appid and appidExclude extensions.

* Address Jeff's comments by linking to [=base64url encoding=]
Received on Wednesday, 21 August 2019 19:14:53 UTC

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