RequestCredBlobExtension Method

RequestCredBlobExtension()

Specify that the YubiKey should return the credBlob with the assertion. Once this extension is added to this object, it is not possible to remove it.

C#

public void RequestCredBlobExtension()

Remarks

Because this extension is used more often, a dedicated method is provided as a convenience. Note that the credBlob extension is valid only for discoverable credentials.

If there is no credBlob stored with the credential, then the YubiKey will simply not return anything. It is not an error.

The credBlob data will be with the assertion returned. It will be in the AuthenticatorData and can be retrieved using GetCredBlobExtension()

Note that there will be a credBlob only if the credential was made with the "credBlob" extension. See AddCredBlobExtension(Byte[], AuthenticatorInfo).