Public/Private Signing Keys

The creator of the homegroup generates a 2048-bit RSA key pair, as specified in [RFC3447] and [PKCS1].

These keys are encrypted, as described in section, and sent to the other members of the homegroup over the PeerGroup channel via a HomeGroup Signing Key message (section

The keys are used to sign or verify the integrity of signed WSD messages sent over the homegroup.