Experimental support for TX_PUBKEY_DROP spending.

[novacoin.git] / src / keystore.cpp

diff --git a/src/keystore.cpp b/src/keystore.cpp
index e0cf805..197b73e 100644 (file)
--- a/src/keystore.cpp
+++ b/src/keystore.cpp
@@ -5,6 +5,9 @@
 
 #include "keystore.h"
 #include "script.h"
+#include "base58.h"
+
+extern bool fWalletUnlockMintOnly;
 
 bool CKeyStore::GetPubKey(const CKeyID &address, CPubKey &vchPubKeyOut) const
 {
@@ -28,6 +31,9 @@ bool CBasicKeyStore::AddKey(const CKey& key)
 
 bool CBasicKeyStore::AddCScript(const CScript& redeemScript)
 {
+    if (redeemScript.size() > MAX_SCRIPT_ELEMENT_SIZE)
+        return error("CBasicKeyStore::AddCScript() : redeemScripts > %i bytes are invalid", MAX_SCRIPT_ELEMENT_SIZE);
+
     {
         LOCK(cs_KeyStore);
         mapScripts[redeemScript.GetID()] = redeemScript;
@@ -60,6 +66,56 @@ bool CBasicKeyStore::GetCScript(const CScriptID &hash, CScript& redeemScriptOut)
     return false;
 }
 
+bool CBasicKeyStore::AddWatchOnly(const CScript &dest)
+{
+    LOCK(cs_KeyStore);
+
+    CTxDestination address;
+    if (ExtractDestination(dest, address)) {
+        CKeyID keyID;
+        CBitcoinAddress(address).GetKeyID(keyID);
+        if (HaveKey(keyID))
+            return false;
+    }
+
+    setWatchOnly.insert(dest);
+    return true;
+}
+
+
+bool CBasicKeyStore::RemoveWatchOnly(const CScript &dest)
+{
+    LOCK(cs_KeyStore);
+    setWatchOnly.erase(dest);
+    return true;
+}
+
+bool CBasicKeyStore::HaveWatchOnly(const CScript &dest) const
+{
+    LOCK(cs_KeyStore);
+    return setWatchOnly.count(dest) > 0;
+}
+
+bool CBasicKeyStore::HaveWatchOnly() const
+{
+    LOCK(cs_KeyStore);
+    return (!setWatchOnly.empty());
+}
+
+CCryptoKeyStore::CCryptoKeyStore() : fUseCrypto(false)
+{
+    std::string strMalleableKey = GetArg("-masterkey", "");
+    CMalleableKey malleableKey;
+    if (strMalleableKey != "")
+        malleableKey.SetString(strMalleableKey);
+    else
+        malleableKey.MakeNewKeys();
+
+    CMalleableKeyView keyView(malleableKey);
+
+    malleableKeyPair = std::pair<CMalleableKeyView, CMalleableKey>(keyView, malleableKey);
+}
+
 bool CCryptoKeyStore::SetCrypted()
 {
     {
@@ -81,6 +137,7 @@ bool CCryptoKeyStore::Lock()
     {
         LOCK(cs_KeyStore);
         vMasterKey.clear();
+        fWalletUnlockMintOnly = false;
     }
 
     NotifyStatusChanged(this);
@@ -111,6 +168,7 @@ bool CCryptoKeyStore::Unlock(const CKeyingMaterial& vMasterKeyIn)
                 break;
             return false;
         }
+
         vMasterKey = vMasterKeyIn;
     }
     NotifyStatusChanged(this);
@@ -121,6 +179,13 @@ bool CCryptoKeyStore::AddKey(const CKey& key)
 {
     {
         LOCK(cs_KeyStore);
+
+        CScript script;
+        script.SetDestination(key.GetPubKey().GetID());
+
+        if (HaveWatchOnly(script))
+            return false;
+
         if (!IsCrypted())
             return CBasicKeyStore::AddKey(key);
 
@@ -219,3 +284,33 @@ bool CCryptoKeyStore::EncryptKeys(CKeyingMaterial& vMasterKeyIn)
     }
     return true;
 }
+
+bool CCryptoKeyStore::DecryptKeys(const CKeyingMaterial& vMasterKeyIn)
+{
+    {
+        LOCK(cs_KeyStore);
+        if (!IsCrypted())
+            return false;
+
+        CryptedKeyMap::const_iterator mi = mapCryptedKeys.begin();
+        for (; mi != mapCryptedKeys.end(); ++mi)
+        {
+            const CPubKey &vchPubKey = (*mi).second.first;
+            const std::vector<unsigned char> &vchCryptedSecret = (*mi).second.second;
+            CSecret vchSecret;
+            if(!DecryptSecret(vMasterKeyIn, vchCryptedSecret, vchPubKey.GetHash(), vchSecret))
+                return false;
+            if (vchSecret.size() != 32)
+                return false;
+            CKey key;
+            key.SetPubKey(vchPubKey);
+            key.SetSecret(vchSecret);
+            if (!CBasicKeyStore::AddKey(key))
+                return false;
+        }
+
+        mapCryptedKeys.clear();
+    }
+
+    return true;
+}