[w3c/webauthn] 610048: Obfuscate Safetynet nonce

  Branch: refs/heads/leshi-patch-1
  Home:   https://github.com/w3c/webauthn
  Commit: 6100486bdf0b02d75e1731668cd52e6e582e156d
      https://github.com/w3c/webauthn/commit/6100486bdf0b02d75e1731668cd52e6e582e156d
  Author: Alexei Czeskis <alexei@czeskis.com>
  Date:   2018-04-12 (Thu, 12 Apr 2018)

  Changed paths:
    M index.bs

  Log Message:
  -----------
  Obfuscate Safetynet nonce

Closes #868