Abstract: Techniques for establishing implicit trust of authorship certification are provided. A message's domain is validated in response to a valid domain certificate. A message's author is validated in response to an author identification, which is acquired from the message and which is supplied to a domain service of the author. The domain service is implicitly trusted based on the domain being validated via the domain certificate. The domain service uses the author's identification to traverse to a specific location within the domain that houses an author certificate for the author. The author certificate is compared against a message certificate that accompanies the message in order to establish trust with the author and the author's message.

Abstract: Techniques for registration of peer-to-peer (P2P) services are provided. A first principal registers a P2P service with a network service provider. The first principal supplies a criterion for granting access to the P2P service. The network service provider distributes an access token to a second principal if the criterion is met. The second principal connects to the P2P service of the first principal via a P2P connection if the second principal successfully acquires the access token from the network service provider.

Abstract: Techniques for attesting to content received from an author (sender) are provided. A sender's content is represented by a message digest. The message digest is signed by an identity service. The signed message digest represents an attestation as to the authenticity of the content from the sender. The sender transmits the signed message digest and content in a message to a recipient. The recipient verifies the signature and message digest to authenticate the content from the sender.