Imports github.com/docker/go/canonical/json github.com/sirupsen/logrus github.com/theupdateframework/notary github.com/agl/ed25519 Standard library imports bytes crypto crypto/ecdsa crypto/rsa crypto/sha256 crypto/sha512 crypto/subtle crypto/x509 encoding/asn1 encoding/hex errors fmt hash io path regexp strings time io/ioutil math/big