Imports github.com/smallstep/cli/crypto/pemutil github.com/pkg/errors github.com/smallstep/cli/crypto/keys github.com/smallstep/cli/errs github.com/smallstep/cli/pkg/x509 github.com/smallstep/cli/utils Standard library imports crypto crypto/sha1 crypto/rand crypto/sha256 crypto/tls crypto/x509 crypto/x509/pkix encoding/hex encoding/pem errors fmt io/ioutil math/big net os path/filepath strings time