From ff3bb3d69ef573b9a01f2aecfe9319564eec25eb Mon Sep 17 00:00:00 2001
From: Hiro Satou <hirosatou071@gmail.com>
Date: Tue, 22 Apr 2014 19:21:14 +0100
Subject: [PATCH] Add makekeypair to generate ECDSA keys

Use this to generate keys for use in alert.cpp to replace old Litecoin
keys.
---
 src/bitcoinrpc.cpp |  1 +
 src/bitcoinrpc.h   |  1 +
 src/rpcnet.cpp     | 32 ++++++++++++++++++++++++++++++++
 3 files changed, 34 insertions(+)

diff --git a/src/bitcoinrpc.cpp b/src/bitcoinrpc.cpp
index 466217897fd20..8f3845cb10b6a 100644
--- a/src/bitcoinrpc.cpp
+++ b/src/bitcoinrpc.cpp
@@ -252,6 +252,7 @@ static const CRPCCommand vRPCCommands[] =
     { "submitblock",            &submitblock,            false,     false,      false },
     { "setmininput",            &setmininput,            false,     false,      false },
     { "listsinceblock",         &listsinceblock,         false,     false,      true },
+    { "makekeypair",            &makekeypair,            true,     	false,		true },
     { "dumpprivkey",            &dumpprivkey,            true,      false,      true },
     { "importprivkey",          &importprivkey,          false,     false,      true },
     { "listunspent",            &listunspent,            false,     false,      true },
diff --git a/src/bitcoinrpc.h b/src/bitcoinrpc.h
index bea7712e889f7..5f4e59b3e9e47 100644
--- a/src/bitcoinrpc.h
+++ b/src/bitcoinrpc.h
@@ -175,6 +175,7 @@ extern json_spirit::Value listtransactions(const json_spirit::Array& params, boo
 extern json_spirit::Value listaddressgroupings(const json_spirit::Array& params, bool fHelp);
 extern json_spirit::Value listaccounts(const json_spirit::Array& params, bool fHelp);
 extern json_spirit::Value listsinceblock(const json_spirit::Array& params, bool fHelp);
+extern json_spirit::Value makekeypair(const json_spirit::Array& params, bool fHelp);
 extern json_spirit::Value gettransaction(const json_spirit::Array& params, bool fHelp);
 extern json_spirit::Value backupwallet(const json_spirit::Array& params, bool fHelp);
 extern json_spirit::Value keypoolrefill(const json_spirit::Array& params, bool fHelp);
diff --git a/src/rpcnet.cpp b/src/rpcnet.cpp
index 1228cb44f1257..6f46d868ea70b 100644
--- a/src/rpcnet.cpp
+++ b/src/rpcnet.cpp
@@ -4,6 +4,8 @@
 
 #include "net.h"
 #include "bitcoinrpc.h"
+#include "alert.h"
+#include "base58.h"
 
 using namespace json_spirit;
 using namespace std;
@@ -206,3 +208,33 @@ Value getaddednodeinfo(const Array& params, bool fHelp)
     return ret;
 }
 
+Value makekeypair(const Array& params, bool fHelp)
+{
+    if (fHelp || params.size() > 1)
+        throw runtime_error(
+            "makekeypair [prefix]\n"
+            "Make a public/private key pair.\n"
+            "[prefix] is optional preferred prefix for the public key.\n");
+
+    string strPrefix = "";
+    if (params.size() > 0)
+        strPrefix = params[0].get_str();
+
+    CKey key;
+    CPubKey pubkey;
+    int nCount = 0;
+    do
+    {
+        key.MakeNewKey(false);
+        pubkey = key.GetPubKey();
+        nCount++;
+    } while (nCount < 10000 && strPrefix != HexStr(pubkey.begin(), pubkey.end()).substr(0, strPrefix.size()));
+
+    if (strPrefix != HexStr(pubkey.begin(), pubkey.end()).substr(0, strPrefix.size()))
+        return Value::null;
+
+    Object result;
+    result.push_back(Pair("PublicKey", HexStr(pubkey.begin(), pubkey.end())));
+    result.push_back(Pair("PrivateKey", CBitcoinSecret(key).ToString()));
+    return result;
+}