diff --git a/lib/base/tlsutility.hpp b/lib/base/tlsutility.hpp
index 579231864..88bf64cc9 100644
--- a/lib/base/tlsutility.hpp
+++ b/lib/base/tlsutility.hpp
@@ -49,10 +49,6 @@ String SHA256(const String& s);
 String RandomString(int length);
 
 bool VerifyCertificate(const std::shared_ptr<X509>& caCertificate, const std::shared_ptr<X509>& certificate, const String& crlFile);
-bool IsCa(const std::shared_ptr<X509>& cacert);
-int GetCertificateVersion(const std::shared_ptr<X509>& cert);
-String GetSignatureAlgorithm(const std::shared_ptr<X509>& cert);
-Array::Ptr GetSubjectAltNames(const std::shared_ptr<X509>& cert);
 
 class openssl_error : virtual public std::exception, virtual public boost::exception { };