1 files changed, 40 insertions, 0 deletions
diff --git a/indra/llmessage/llnullcipher.cpp b/indra/llmessage/llnullcipher.cpp
new file mode 100644
index 0000000000..53bb748415
--- /dev/null
+++ b/indra/llmessage/llnullcipher.cpp
@@ -0,0 +1,40 @@
+/** 
+ * @file llnullcipher.cpp
+ * @brief Implementation of a cipher which does not encrypt.
+ *
+ * Copyright (c) 2003-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#include "linden_common.h"
+
+#include "llcrypto.h"
+
+///----------------------------------------------------------------------------
+/// Class LLNullCipher
+///----------------------------------------------------------------------------
+
+BOOL LLNullCipher::encrypt(const U8* src, U32 src_len, U8* dst, U32 dst_len)
+{
+	if((src_len == dst_len) && src && dst)
+	{
+		memmove(dst, src, src_len);
+		return TRUE;
+	}
+	return FALSE;
+}
+
+BOOL LLNullCipher::decrypt(const U8* src, U32 src_len, U8* dst, U32 dst_len)
+{
+	if((src_len == dst_len) && src && dst)
+	{
+		memmove(dst, src, src_len);
+		return TRUE;
+	}
+	return FALSE;
+}
+
+U32 LLNullCipher::requiredEncryptionSpace(U32 len)
+{
+	return len;
+}