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