Rearrange sources (#4997)

include/xrpl/crypto/RFC1751.h

@@ -0,0 +1,66 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of rippled: https://github.com/ripple/rippled
+    Copyright (c) 2012, 2013 Ripple Labs Inc.
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#ifndef RIPPLE_CRYPTO_RFC1751_H_INCLUDED
+#define RIPPLE_CRYPTO_RFC1751_H_INCLUDED
+
+#include <string>
+#include <vector>
+
+namespace ripple {
+
+class RFC1751
+{
+public:
+    static int
+    getKeyFromEnglish(std::string& strKey, std::string const& strHuman);
+
+    static void
+    getEnglishFromKey(std::string& strHuman, std::string const& strKey);
+
+    /** Chooses a single dictionary word from the data.
+
+        This is not particularly secure but it can be useful to provide
+        a unique name for something given a GUID or fixed data. We use
+        it to turn the pubkey_node into an easily remembered and identified
+        4 character string.
+    */
+    static std::string
+    getWordFromBlob(void const* blob, size_t bytes);
+
+private:
+    static unsigned long
+    extract(char const* s, int start, int length);
+    static void
+    btoe(std::string& strHuman, std::string const& strData);
+    static void
+    insert(char* s, int x, int start, int length);
+    static void
+    standard(std::string& strWord);
+    static int
+    wsrch(std::string const& strWord, int iMin, int iMax);
+    static int
+    etob(std::string& strData, std::vector<std::string> vsHuman);
+
+    static char const* s_dictionary[];
+};
+
+}  // namespace ripple
+
+#endif