if len(values) > 0 {
		buf.WriteString(values[0])
		for i := 1; i < len(values); i++ {
			buf.WriteString(", " + values[i])
		}
		buf.WriteString("\n")
	}
	return values
}

// CertificateText returns a human-readable string representation
// of the certificate cert. The format is similar to the OpenSSL
// way of printing certificates (not identical).
func CertificateText(cert *x509.Certificate) string {
	var buf strings.Builder