added stubs for AES-GCM processing and build option

configure.ac

@@ -6,7 +6,7 @@
 #
 #
 
-AC_INIT([cyassl],[2.2.4],[http://www.yassl.com])
+AC_INIT([cyassl],[2.2.5],[http://www.yassl.com])
 
 AC_CONFIG_AUX_DIR(config)
 
@@ -289,6 +289,20 @@ fi
 
 AM_CONDITIONAL([BUILD_SNIFFER], [test "x$ENABLED_SNIFFER" = "xyes"])
 
+# AES-GCM
+AC_ARG_ENABLE(aesgcm,
+    [  --enable-aesgcm         Enable CyaSSL AES-GCM support (default: disabled)],
+    [ ENABLED_AESGCM=$enableval ],
+    [ ENABLED_AESGCM=no ]
+    )
+
+if test "$ENABLED_AESGCM" = "yes"
+then
+    AM_CFLAGS="$AM_CFLAGS -DHAVE_AESGCM"
+fi
+
+AM_CONDITIONAL([BUILD_AESGCM], [test "x$ENABLED_AESGCM" = "xyes"])
+
 # AES-NI
 AC_ARG_ENABLE(aesni,
     [  --enable-aesni          Enable CyaSSL AES-NI support (default: disabled)],

ctaocrypt/src/aes.c

@@ -1404,5 +1404,31 @@ void AesCtrEncrypt(Aes* aes, byte* out, const byte* in, word32 sz)
 
 #endif /* CYASSL_AES_COUNTER */
 
+
+#ifdef HAVE_AESGCM
+
+void AesGcmEncrypt(Aes* aes, byte* out, const byte* in, word32 sz,
+                   byte* authTag, word32 authTagSz,
+                   const byte* authIn, word32 authInSz)
+{
+	word32 blocks = sz / AES_BLOCK_SIZE;
+	
+	CYASSL_ENTER("AesGcmEncrypt");
+	while (blocks--) {
+	}
+}
+
+
+int  AesGcmDecrypt(Aes* aes, byte* out, const byte* in, word32 sz,
+                   const byte* authTag, word32 authTagSz,
+                   const byte* authIn, word32 authInSz)
+{
+	CYASSL_ENTER("AesGcmDecrypt");
+	return 0;
+}
+
+#endif /* HAVE_AESGCM */
+
+
 #endif /* NO_AES */
 

cyassl/ctaocrypt/aes.h

@@ -80,6 +80,15 @@ CYASSL_API void AesCtrEncrypt(Aes* aes, byte* out, const byte* in, word32 sz);
 CYASSL_API void AesEncryptDirect(Aes* aes, byte* out, const byte* in);
 CYASSL_API void AesDecryptDirect(Aes* aes, byte* out, const byte* in);
 
+#ifdef HAVE_AESGCM
+CYASSL_API void AesGcmEncrypt(Aes* aes, byte* out, const byte* in, word32 sz,
+                              byte* authTag, word32 authTagSz,
+                              const byte* authIn, word32 authInSz);
+CYASSL_API int  AesGcmDecrypt(Aes* aes, byte* out, const byte* in, word32 sz,
+                              const byte* authTag, word32 authTagSz,
+                              const byte* authIn, word32 authInSz);
+#endif /* HAVE_AESGCM */
+
 
 #ifdef __cplusplus
     } /* extern "C" */