[webauthn] Add required key protection to AuthenticatorSelectionCriteria

gmandyam has just created a new issue for https://github.com/w3c/webauthn:

== Add required key protection to AuthenticatorSelectionCriteria ==
Regarding https://w3c.github.io/webauthn/#authenticatorSelection, add criterion for required key protection.

Suggestion is to define
enum KeyProtection {
"SW",
"HW",
"TEE",
"SE"}

If requireResidentKey=false, then this criterion will be ignored.  If requireResidentKey=true, then the UA will raise exception if the key protection level does not meet level specified.


Please view or discuss this issue at https://github.com/w3c/webauthn/issues/446 using your GitHub account