1 files changed, 11 insertions, 0 deletions
diff --git a/src/lib/mac/mac.cpp b/src/lib/mac/mac.cpp
index f2c5557c7..2fa321a67 100644
--- a/src/lib/mac/mac.cpp
+++ b/src/lib/mac/mac.cpp
@@ -45,6 +45,17 @@ MessageAuthenticationCode::create(const std::string& algo_spec,
    {
    const SCAN_Name req(algo_spec);
 
+#if defined(BOTAN_HAS_GMAC)
+   if(req.algo_name() == "GMAC" && req.arg_count() == 1)
+      {
+      if(provider.empty() || provider == "base")
+         {
+         if(auto bc = BlockCipher::create(req.arg(0)))
+            return std::unique_ptr<MessageAuthenticationCode>(new GMAC(bc.release()));
+         }
+      }
+#endif
+
 #if defined(BOTAN_HAS_HMAC)
    if(req.algo_name() == "HMAC" && req.arg_count() == 1)
       {