This might relevant for this issue: Both Chrome and Firefox currently fulfill the promise if you use an empty ArrayBuffer for options.publicKey.challenge . The subtest at https://github.com/web-platform-tests/wpt/blob/692ce5ae58a420893bd318e74b7e342a980b05a6/webauthn/createcredential-badargs-challenge.https.html#L20 . As a side, I believe the test is incorrect to expect a TypeError and instead should expect a SecurityError, if any. -- GitHub Notification of comment by plehegar Please view or discuss this issue at https://github.com/w3c/webauthn/issues/1115#issuecomment-444931160 using your GitHub accountReceived on Thursday, 6 December 2018 16:20:52 UTC
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