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Merge branch 'main' into pm-20221219-passwordless

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Paolo Matarazzo 2022-12-20 08:44:30 -05:00 committed by GitHub
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windows/security/identity-protection/hello-for-business/hello-faq.yml
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@ -57,6 +57,10 @@ sections:
answer: |
The maximum number of supported enrollments on a single Windows 10 computer is 10. This lets 10 users each enroll their face and up to 10 fingerprints. For devices with more than 10 users, we strongly encourage the use of FIDO2 security keys.
- question: Can I use Windows Hello for Business credentials in private browser mode or "incognito" mode?
answer: |
Windows Hello for Business credentials need access to device state, which is not available in private browser mode or incognito mode. Hence it can't be used in private browser or Incognito mode.
- question: How can a PIN be more secure than a password?
answer: |
When using Windows Hello for Business, the PIN isn't a symmetric key, whereas the password is a symmetric key. With passwords, there's a server that has some representation of the password. With Windows Hello for Business, the PIN is user-provided entropy used to load the private key in the Trusted Platform Module (TPM). The server doesn't have a copy of the PIN. For that matter, the Windows client doesn't have a copy of the current PIN either. The user must provide the entropy, the TPM-protected key, and the TPM that generated that key in order to successfully access the private key.