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-rw-r--r--src/lib/modes/aead/gcm/clmul/clmul.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/lib/modes/aead/gcm/clmul/clmul.h b/src/lib/modes/aead/gcm/clmul/clmul.h
index ba197f2f7..6bcc0e2a0 100644
--- a/src/lib/modes/aead/gcm/clmul/clmul.h
+++ b/src/lib/modes/aead/gcm/clmul/clmul.h
@@ -5,6 +5,9 @@
* Distributed under the terms of the Botan license
*/
+#ifndef BOTAN_GCM_CLMUL_H__
+#define BOTAN_GCM_CLMUL_H__
+
#include <botan/types.h>
namespace Botan {
@@ -12,3 +15,5 @@ namespace Botan {
void gcm_multiply_clmul(byte x[16], const byte H[16]);
}
+
+#endif