Imports github.com/agl/ed25519 github.com/docker/go/canonical/json github.com/sirupsen/logrus github.com/theupdateframework/notary/trustmanager github.com/theupdateframework/notary/tuf/data github.com/theupdateframework/notary/tuf/utils Standard library imports crypto/rsa crypto crypto/ecdsa crypto/rand crypto/sha256 crypto/x509 encoding/pem errors fmt math/big strings time