src/keystore.cpp

   1 // Copyright (c) 2009-2011 Satoshi Nakamoto & Bitcoin developers
   2 // Distributed under the MIT/X11 software license, see the accompanying
   3 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
   4
   5 #include "headers.h"
   6 #include "db.h"
   7 #include "crypter.h"
   8
   9 std::vector<unsigned char> CKeyStore::GenerateNewKey()
  10 {
  11     RandAddSeedPerfmon();
  12     CKey key;
  13     key.MakeNewKey();
  14     if (!AddKey(key))
  15         throw std::runtime_error("CKeyStore::GenerateNewKey() : AddKey failed");
  16     return key.GetPubKey();
  17 }
  18
  19 bool CKeyStore::GetPubKey(const CBitcoinAddress &address, std::vector<unsigned char> &vchPubKeyOut) const
  20 {
  21     CKey key;
  22     if (!GetKey(address, key))
  23         return false;
  24     vchPubKeyOut = key.GetPubKey();
  25     return true;
  26 }
  27
  28 bool CBasicKeyStore::AddKey(const CKey& key)
  29 {
  30     CRITICAL_BLOCK(cs_KeyStore)
  31         mapKeys[key.GetAddress()] = key.GetSecret();
  32     return true;
  33 }
  34
  35 std::vector<unsigned char> CCryptoKeyStore::GenerateNewKey()
  36 {
  37     RandAddSeedPerfmon();
  38     CKey key;
  39     key.MakeNewKey();
  40     if (!AddKey(key))
  41         throw std::runtime_error("CCryptoKeyStore::GenerateNewKey() : AddKey failed");
  42     return key.GetPubKey();
  43 }
  44
  45 bool CCryptoKeyStore::Unlock(const CKeyingMaterial& vMasterKeyIn)
  46 {
  47     CRITICAL_BLOCK(cs_vMasterKey)
  48     {
  49         if (!SetCrypted())
  50             return false;
  51
  52         CryptedKeyMap::const_iterator mi = mapCryptedKeys.begin();
  53         for (; mi != mapCryptedKeys.end(); ++mi)
  54         {
  55             const std::vector<unsigned char> &vchPubKey = (*mi).second.first;
  56             const std::vector<unsigned char> &vchCryptedSecret = (*mi).second.second;
  57             CSecret vchSecret;
  58             if(!DecryptSecret(vMasterKeyIn, vchCryptedSecret, Hash(vchPubKey.begin(), vchPubKey.end()), vchSecret))
  59                 return false;
  60             CKey key;
  61             key.SetSecret(vchSecret);
  62             if (key.GetPubKey() == vchPubKey)
  63                 break;
  64             return false;
  65         }
  66         vMasterKey = vMasterKeyIn;
  67     }
  68     return true;
  69 }
  70
  71 bool CCryptoKeyStore::AddKey(const CKey& key)
  72 {
  73     CRITICAL_BLOCK(cs_KeyStore)
  74     CRITICAL_BLOCK(cs_vMasterKey)
  75     {
  76         if (!IsCrypted())
  77             return CBasicKeyStore::AddKey(key);
  78
  79         if (IsLocked())
  80             return false;
  81
  82         std::vector<unsigned char> vchCryptedSecret;
  83         std::vector<unsigned char> vchPubKey = key.GetPubKey();
  84         if (!EncryptSecret(vMasterKey, key.GetSecret(), Hash(vchPubKey.begin(), vchPubKey.end()), vchCryptedSecret))
  85             return false;
  86
  87         if (!AddCryptedKey(key.GetPubKey(), vchCryptedSecret))
  88             return false;
  89     }
  90     return true;
  91 }
  92
  93
  94 bool CCryptoKeyStore::AddCryptedKey(const std::vector<unsigned char> &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret)
  95 {
  96     CRITICAL_BLOCK(cs_KeyStore)
  97     {
  98         if (!SetCrypted())
  99             return false;
 100
 101         mapCryptedKeys[CBitcoinAddress(vchPubKey)] = make_pair(vchPubKey, vchCryptedSecret);
 102     }
 103     return true;
 104 }
 105
 106 bool CCryptoKeyStore::GetKey(const CBitcoinAddress &address, CKey& keyOut) const
 107 {
 108     CRITICAL_BLOCK(cs_vMasterKey)
 109     {
 110         if (!IsCrypted())
 111             return CBasicKeyStore::GetKey(address, keyOut);
 112
 113         CryptedKeyMap::const_iterator mi = mapCryptedKeys.find(address);
 114         if (mi != mapCryptedKeys.end())
 115         {
 116             const std::vector<unsigned char> &vchPubKey = (*mi).second.first;
 117             const std::vector<unsigned char> &vchCryptedSecret = (*mi).second.second;
 118             CSecret vchSecret;
 119             if (!DecryptSecret(vMasterKey, vchCryptedSecret, Hash(vchPubKey.begin(), vchPubKey.end()), vchSecret))
 120                 return false;
 121             keyOut.SetSecret(vchSecret);
 122             return true;
 123         }
 124     }
 125     return false;
 126 }
 127
 128 bool CCryptoKeyStore::GetPubKey(const CBitcoinAddress &address, std::vector<unsigned char>& vchPubKeyOut) const
 129 {
 130     CRITICAL_BLOCK(cs_vMasterKey)
 131     {
 132         if (!IsCrypted())
 133             return CKeyStore::GetPubKey(address, vchPubKeyOut);
 134
 135         CryptedKeyMap::const_iterator mi = mapCryptedKeys.find(address);
 136         if (mi != mapCryptedKeys.end())
 137         {
 138             vchPubKeyOut = (*mi).second.first;
 139             return true;
 140         }
 141     }
 142     return false;
 143 }
 144
 145 bool CCryptoKeyStore::EncryptKeys(CKeyingMaterial& vMasterKeyIn)
 146 {
 147     CRITICAL_BLOCK(cs_KeyStore)
 148     CRITICAL_BLOCK(cs_vMasterKey)
 149     {
 150         if (!mapCryptedKeys.empty() || IsCrypted())
 151             return false;
 152
 153         fUseCrypto = true;
 154         CKey key;
 155         BOOST_FOREACH(KeyMap::value_type& mKey, mapKeys)
 156         {
 157             if (!key.SetPrivKey(mKey.second))
 158                 return false;
 159             const std::vector<unsigned char> vchPubKey = key.GetPubKey();
 160             std::vector<unsigned char> vchCryptedSecret;
 161             if (!EncryptSecret(vMasterKeyIn, key.GetSecret(), Hash(vchPubKey.begin(), vchPubKey.end()), vchCryptedSecret))
 162                 return false;
 163             if (!AddCryptedKey(vchPubKey, vchCryptedSecret))
 164                 return false;
 165         }
 166         mapKeys.clear();
 167     }
 168     return true;
 169 }