1 files changed, 30 insertions, 0 deletions
diff --git a/indra/llmessage/llnullcipher.h b/indra/llmessage/llnullcipher.h
new file mode 100644
index 0000000000..bc8c2f2fa3
--- /dev/null
+++ b/indra/llmessage/llnullcipher.h
@@ -0,0 +1,30 @@
+/** 
+ * @file llnullcipher.h
+ *
+ * Copyright (c) 2003-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#ifndef LLNULLCIPHER_H
+#define LLNULLCIPHER_H
+
+#include "llcipher.h"
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+// Class LLNullCipher
+//
+// A class which implements LLCipher, but does not transform src
+// during encryption.
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+class LLNullCipher : public LLCipher
+{
+public:
+	LLNullCipher() {}
+	virtual ~LLNullCipher() {}
+	virtual U32 encrypt(const U8* src, U32 src_len, U8* dst, U32 dst_len);
+	virtual U32 decrypt(const U8* src, U32 src_len, U8* dst, U32 dst_len);
+	virtual U32 requiredEncryptionSpace(U32 src_len) const;
+};
+
+#endif