Merge pull request #4762

[VerusCoin.git] / src / crypter.cpp

diff --git a/src/crypter.cpp b/src/crypter.cpp
index 32baabd6744c85cb2f0bd08cff3161396c030cb0..8aa2bb05177181870612f506e1f8185022f34562 100644 (file)
--- a/src/crypter.cpp
+++ b/src/crypter.cpp
@@ -1,16 +1,17 @@
-// Copyright (c) 2009-2012 The Bitcoin Developers
+// Copyright (c) 2009-2013 The Bitcoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#include "crypter.h"
+
+#include "script.h"
+#include "util.h"
+
+#include <string>
+#include <vector>
+#include <boost/foreach.hpp>
 #include <openssl/aes.h>
 #include <openssl/evp.h>
-#include <vector>
-#include <string>
-#ifdef WIN32
-#include <windows.h>
-#endif
-
-#include "crypter.h"
 
 bool CCrypter::SetKeyFromPassphrase(const SecureString& strKeyData, const std::vector<unsigned char>& chSalt, const unsigned int nRounds, const unsigned int nDerivationMethod)
 {
@@ -119,3 +120,177 @@ bool DecryptSecret(const CKeyingMaterial& vMasterKey, const std::vector<unsigned
         return false;
     return cKeyCrypter.Decrypt(vchCiphertext, *((CKeyingMaterial*)&vchPlaintext));
 }
+
+bool CCryptoKeyStore::SetCrypted()
+{
+    LOCK(cs_KeyStore);
+    if (fUseCrypto)
+        return true;
+    if (!mapKeys.empty())
+        return false;
+    fUseCrypto = true;
+    return true;
+}
+
+bool CCryptoKeyStore::Lock()
+{
+    if (!SetCrypted())
+        return false;
+
+    {
+        LOCK(cs_KeyStore);
+        vMasterKey.clear();
+    }
+
+    NotifyStatusChanged(this);
+    return true;
+}
+
+bool CCryptoKeyStore::Unlock(const CKeyingMaterial& vMasterKeyIn)
+{
+    {
+        LOCK(cs_KeyStore);
+        if (!SetCrypted())
+            return false;
+
+        bool keyPass = false;
+        bool keyFail = 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;
+            CKeyingMaterial vchSecret;
+            if(!DecryptSecret(vMasterKeyIn, vchCryptedSecret, vchPubKey.GetHash(), vchSecret))
+            {
+                keyFail = true;
+                break;
+            }
+            if (vchSecret.size() != 32)
+            {
+                keyFail = true;
+                break;
+            }
+            CKey key;
+            key.Set(vchSecret.begin(), vchSecret.end(), vchPubKey.IsCompressed());
+            if (key.GetPubKey() != vchPubKey)
+            {
+                keyFail = true;
+                break;
+            }
+            keyPass = true;
+            if (fDecryptionThoroughlyChecked)
+                break;
+        }
+        if (keyPass && keyFail)
+        {
+            LogPrintf("The wallet is probably corrupted: Some keys decrypt but not all.");
+            assert(false);
+        }
+        if (keyFail || !keyPass)
+            return false;
+        vMasterKey = vMasterKeyIn;
+        fDecryptionThoroughlyChecked = true;
+    }
+    NotifyStatusChanged(this);
+    return true;
+}
+
+bool CCryptoKeyStore::AddKeyPubKey(const CKey& key, const CPubKey &pubkey)
+{
+    {
+        LOCK(cs_KeyStore);
+        if (!IsCrypted())
+            return CBasicKeyStore::AddKeyPubKey(key, pubkey);
+
+        if (IsLocked())
+            return false;
+
+        std::vector<unsigned char> vchCryptedSecret;
+        CKeyingMaterial vchSecret(key.begin(), key.end());
+        if (!EncryptSecret(vMasterKey, vchSecret, pubkey.GetHash(), vchCryptedSecret))
+            return false;
+
+        if (!AddCryptedKey(pubkey, vchCryptedSecret))
+            return false;
+    }
+    return true;
+}
+
+
+bool CCryptoKeyStore::AddCryptedKey(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret)
+{
+    {
+        LOCK(cs_KeyStore);
+        if (!SetCrypted())
+            return false;
+
+        mapCryptedKeys[vchPubKey.GetID()] = make_pair(vchPubKey, vchCryptedSecret);
+    }
+    return true;
+}
+
+bool CCryptoKeyStore::GetKey(const CKeyID &address, CKey& keyOut) const
+{
+    {
+        LOCK(cs_KeyStore);
+        if (!IsCrypted())
+            return CBasicKeyStore::GetKey(address, keyOut);
+
+        CryptedKeyMap::const_iterator mi = mapCryptedKeys.find(address);
+        if (mi != mapCryptedKeys.end())
+        {
+            const CPubKey &vchPubKey = (*mi).second.first;
+            const std::vector<unsigned char> &vchCryptedSecret = (*mi).second.second;
+            CKeyingMaterial vchSecret;
+            if (!DecryptSecret(vMasterKey, vchCryptedSecret, vchPubKey.GetHash(), vchSecret))
+                return false;
+            if (vchSecret.size() != 32)
+                return false;
+            keyOut.Set(vchSecret.begin(), vchSecret.end(), vchPubKey.IsCompressed());
+            return true;
+        }
+    }
+    return false;
+}
+
+bool CCryptoKeyStore::GetPubKey(const CKeyID &address, CPubKey& vchPubKeyOut) const
+{
+    {
+        LOCK(cs_KeyStore);
+        if (!IsCrypted())
+            return CKeyStore::GetPubKey(address, vchPubKeyOut);
+
+        CryptedKeyMap::const_iterator mi = mapCryptedKeys.find(address);
+        if (mi != mapCryptedKeys.end())
+        {
+            vchPubKeyOut = (*mi).second.first;
+            return true;
+        }
+    }
+    return false;
+}
+
+bool CCryptoKeyStore::EncryptKeys(CKeyingMaterial& vMasterKeyIn)
+{
+    {
+        LOCK(cs_KeyStore);
+        if (!mapCryptedKeys.empty() || IsCrypted())
+            return false;
+
+        fUseCrypto = true;
+        BOOST_FOREACH(KeyMap::value_type& mKey, mapKeys)
+        {
+            const CKey &key = mKey.second;
+            CPubKey vchPubKey = key.GetPubKey();
+            CKeyingMaterial vchSecret(key.begin(), key.end());
+            std::vector<unsigned char> vchCryptedSecret;
+            if (!EncryptSecret(vMasterKeyIn, vchSecret, vchPubKey.GetHash(), vchCryptedSecret))
+                return false;
+            if (!AddCryptedKey(vchPubKey, vchCryptedSecret))
+                return false;
+        }
+        mapKeys.clear();
+    }
+    return true;
+}