Imports github.com/Sirupsen/logrus github.com/docker/notary/proto github.com/docker/notary/signer/keys github.com/docker/notary/tuf/data golang.org/x/net/context google.golang.org/grpc google.golang.org/grpc/codes google.golang.org/grpc/credentials Standard library imports crypto crypto/tls crypto/x509 errors fmt io net time