Imports github.com/Sirupsen/logrus github.com/agl/ed25519 github.com/docker/notary/pkg/passphrase github.com/endophage/gotuf/data Standard library imports crypto/ecdsa crypto/elliptic crypto/rand crypto/rsa crypto/x509 crypto/x509/pkix encoding/pem errors fmt io io/ioutil math/big net/http net/url os path path/filepath strings sync time