From 3dc2e6a7d08d061791c8b79b7fcb3e5cc442c85d Mon Sep 17 00:00:00 2001
From: monacoinproject <monacoinproject@gmail.com>
Date: Sun, 20 Sep 2015 10:31:47 +0900
Subject: [PATCH] Fixed a bug: permit the old prefix

---
 src/base58.cpp  | 16 +++++++++++-----
 src/base58.h    |  6 +++---
 src/rpcdump.cpp |  2 +-
 3 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/src/base58.cpp b/src/base58.cpp
index c594993ea09..6386275e016 100644
--- a/src/base58.cpp
+++ b/src/base58.cpp
@@ -293,19 +293,25 @@ CKey CBitcoinSecret::GetKey()
     return ret;
 }
 
-bool CBitcoinSecret::IsValid() const
+bool CBitcoinSecret::IsValid(bool bParmitOldPrefix) const
 {
     bool fExpectedFormat = vchData.size() == 32 || (vchData.size() == 33 && vchData[32] == 1);
     bool fCorrectVersion = vchVersion == Params().Base58Prefix(CChainParams::SECRET_KEY);
+    if(bParmitOldPrefix && !fCorrectVersion)
+    {
+        std::vector<unsigned char> oldPrefix;
+        oldPrefix.push_back(0xb2);
+        fCorrectVersion = vchVersion == oldPrefix;
+    }
     return fExpectedFormat && fCorrectVersion;
 }
 
-bool CBitcoinSecret::SetString(const char* pszSecret)
+bool CBitcoinSecret::SetString(const char* pszSecret, bool bParmitOldPrefix)
 {
-    return CBase58Data::SetString(pszSecret) && IsValid();
+    return CBase58Data::SetString(pszSecret) && IsValid(bParmitOldPrefix);
 }
 
-bool CBitcoinSecret::SetString(const std::string& strSecret)
+bool CBitcoinSecret::SetString(const std::string& strSecret, bool bParmitOldPrefix)
 {
-    return SetString(strSecret.c_str());
+    return SetString(strSecret.c_str(), bParmitOldPrefix);
 }
diff --git a/src/base58.h b/src/base58.h
index c4cb96814cc..237aa1930e2 100644
--- a/src/base58.h
+++ b/src/base58.h
@@ -126,9 +126,9 @@ class CBitcoinSecret : public CBase58Data
 public:
     void SetKey(const CKey& vchSecret);
     CKey GetKey();
-    bool IsValid() const;
-    bool SetString(const char* pszSecret);
-    bool SetString(const std::string& strSecret);
+    bool IsValid(bool bParmitOldPrefix = false) const;
+    bool SetString(const char* pszSecret, bool bParmitOldPrefix = false);
+    bool SetString(const std::string& strSecret, bool bParmitOldPrefix = false);
 
     CBitcoinSecret(const CKey& vchSecret) { SetKey(vchSecret); }
     CBitcoinSecret() {}
diff --git a/src/rpcdump.cpp b/src/rpcdump.cpp
index 7fb51e7e517..eec586884e8 100644
--- a/src/rpcdump.cpp
+++ b/src/rpcdump.cpp
@@ -104,7 +104,7 @@ Value importprivkey(const Array& params, bool fHelp)
         fRescan = params[2].get_bool();
 
     CBitcoinSecret vchSecret;
-    bool fGood = vchSecret.SetString(strSecret);
+    bool fGood = vchSecret.SetString(strSecret, true);
 
     if (!fGood) throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid private key encoding");