YubiKey Hardware FIDO2 AAGUIDs

The FIDO2 specification states that an AAGUID must be provided during attestation. An AAGUID is a 128-bit identifier indicating the type of the authenticator. Authenticators with the same capabilities and firmware, such as the YubiKey 5 series devices without NFC, can share the same AAGUID.


Product Name or Laser Marking

Firmware

FIDO2 AAGUID

YubiKey 4 (Series)

All

N/A

YubiKey 5 (USB-A, No NFC)

5.1.X

cb69481e-8ff7-4039-93ec-0a2729a154a8

YubiKey 5 (USB-A, No NFC)

5.2.X

ee882879-721c-4913-9775-3dfcce97072a

YubiKey 5 NFC

5.1.X

fa2b99dc-9e39-4257-8f92-4a30d23c4118

YubiKey 5 NFC

5.2.X

2fc0579f-8113-47ea-b116-bb5a8db9202a

YubiKey 5 Nano

5.1.X

cb69481e-8ff7-4039-93ec-0a2729a154a8

YubiKey 5 Nano

5.2.X

ee882879-721c-4913-9775-3dfcce97072a

YubiKey 5C

5.1.X

cb69481e-8ff7-4039-93ec-0a2729a154a8

YubiKey 5C

5.2.X

ee882879-721c-4913-9775-3dfcce97072a

YubiKey 5C Nano

5.1.X

cb69481e-8ff7-4039-93ec-0a2729a154a8

YubiKey 5C Nano

5.2.X

ee882879-721c-4913-9775-3dfcce97072a

YubiKey 5Ci

5.2.X

c5ef55ff-ad9a-4b9f-b580-adebafe026d0

Security Key By Yubico

5.1.X

f8a011f3-8c0a-4d15-8006-17111f9edc7d

Security Key By Yubico

5.2.X

b92c3f9a-c014-4056-887f-140a2501163b

Security Key NFC

5.1.X

6d44ba9b-f6ec-2e49-b930-0c8fe920cb73

Security Key NFC

5.2.X

149a2021-8ef6-4133-96b8-81f8d5b7f1f5

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