FetchAttestation gathers the materials required for remote attestation from TPM.

GetRegion retrieves region information from GCE metadata server.

NewMetadataServer starts and hooks up a Server, serving env.

NewMockAttestationServer creates a mock verifier.

NewMockOauth2Server creates a mock Oauth2 server for testing purpose.

NewRESTClient returns a REST verifier.Client that points to the given address.

PrincipalFetcher fetch ID token with specific audience from Metadata server.

FakeChallengeUUID is the challenge for fake attestation server.

FakeTpmNonce is the tpm nonce for fake attestation server.

Instance struct for supported fake values for metadata server.

MetadataServer provides fake implementation for the GCE metadata server.

MockAttestationServer provides fake implementation for the GCE attestation server.

MockOauth2Server is a struct for mocking Oauth2Server.

TpmKeyFetcher abstracts the fetching of various types of Attestation Key from TPM.