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 CBasicKeyStore::AddKey(const CKey& key)
  20 {
  21     CRITICAL_BLOCK(cs_mapPubKeys)
  22     CRITICAL_BLOCK(cs_KeyStore)
  23     {
  24         mapKeys[key.GetPubKey()] = key.GetPrivKey();
  25         mapPubKeys[Hash160(key.GetPubKey())] = key.GetPubKey();
  26     }
  27     return true;
  28 }
  29
  30 std::vector<unsigned char> CCryptoKeyStore::GenerateNewKey()
  31 {
  32     RandAddSeedPerfmon();
  33     CKey key;
  34     key.MakeNewKey();
  35     if (!AddKey(key))
  36         throw std::runtime_error("CCryptoKeyStore::GenerateNewKey() : AddKey failed");
  37     return key.GetPubKey();
  38 }
  39
  40 bool CCryptoKeyStore::Unlock(const CKeyingMaterial& vMasterKeyIn)
  41 {
  42     CRITICAL_BLOCK(cs_vMasterKey)
  43     {
  44         if (!SetCrypted())
  45             return false;
  46
  47         std::map<std::vector<unsigned char>, std::vector<unsigned char> >::const_iterator mi = mapCryptedKeys.begin();
  48         for (; mi != mapCryptedKeys.end(); ++mi)
  49         {
  50             const std::vector<unsigned char> &vchPubKey = (*mi).first;
  51             const std::vector<unsigned char> &vchCryptedSecret = (*mi).second;
  52             CSecret vchSecret;
  53             if(!DecryptSecret(vMasterKeyIn, vchCryptedSecret, Hash(vchPubKey.begin(), vchPubKey.end()), vchSecret))
  54                 return false;
  55             CKey key;
  56             key.SetSecret(vchSecret);
  57             if (key.GetPubKey() == vchPubKey)
  58                 break;
  59             return false;
  60         }
  61         vMasterKey = vMasterKeyIn;
  62     }
  63     return true;
  64 }
  65
  66 bool CCryptoKeyStore::AddKey(const CKey& key)
  67 {
  68     CRITICAL_BLOCK(cs_KeyStore)
  69     CRITICAL_BLOCK(cs_vMasterKey)
  70     {
  71         if (!IsCrypted())
  72             return CBasicKeyStore::AddKey(key);
  73
  74         if (IsLocked())
  75             return false;
  76
  77         std::vector<unsigned char> vchCryptedSecret;
  78         std::vector<unsigned char> vchPubKey = key.GetPubKey();
  79         if (!EncryptSecret(vMasterKey, key.GetSecret(), Hash(vchPubKey.begin(), vchPubKey.end()), vchCryptedSecret))
  80             return false;
  81
  82         if (!AddCryptedKey(key.GetPubKey(), vchCryptedSecret))
  83             return false;
  84     }
  85     return true;
  86 }
  87
  88
  89 bool CCryptoKeyStore::AddCryptedKey(const std::vector<unsigned char> &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret)
  90 {
  91     CRITICAL_BLOCK(cs_mapPubKeys)
  92     CRITICAL_BLOCK(cs_KeyStore)
  93     {
  94         if (!SetCrypted())
  95             return false;
  96
  97         mapCryptedKeys[vchPubKey] = vchCryptedSecret;
  98         mapPubKeys[Hash160(vchPubKey)] = vchPubKey;
  99     }
 100     return true;
 101 }
 102
 103 bool CCryptoKeyStore::GetPrivKey(const std::vector<unsigned char> &vchPubKey, CPrivKey& keyOut) const
 104 {
 105     CRITICAL_BLOCK(cs_vMasterKey)
 106     {
 107         if (!IsCrypted())
 108             return CBasicKeyStore::GetPrivKey(vchPubKey, keyOut);
 109
 110         std::map<std::vector<unsigned char>, std::vector<unsigned char> >::const_iterator mi = mapCryptedKeys.find(vchPubKey);
 111         if (mi != mapCryptedKeys.end())
 112         {
 113             const std::vector<unsigned char> &vchCryptedSecret = (*mi).second;
 114             CSecret vchSecret;
 115             if (!DecryptSecret(vMasterKey, (*mi).second, Hash((*mi).first.begin(), (*mi).first.end()), vchSecret))
 116                 return false;
 117             CKey key;
 118             key.SetSecret(vchSecret);
 119             keyOut = key.GetPrivKey();
 120             return true;
 121         }
 122     }
 123     return false;
 124 }
 125
 126 bool CCryptoKeyStore::EncryptKeys(CKeyingMaterial& vMasterKeyIn)
 127 {
 128     CRITICAL_BLOCK(cs_KeyStore)
 129     CRITICAL_BLOCK(cs_vMasterKey)
 130     {
 131         if (!mapCryptedKeys.empty() || IsCrypted())
 132             return false;
 133
 134         fUseCrypto = true;
 135         CKey key;
 136         BOOST_FOREACH(KeyMap::value_type& mKey, mapKeys)
 137         {
 138             if (!key.SetPrivKey(mKey.second))
 139                 return false;
 140             std::vector<unsigned char> vchCryptedSecret;
 141             if (!EncryptSecret(vMasterKeyIn, key.GetSecret(), Hash(mKey.first.begin(), mKey.first.end()), vchCryptedSecret))
 142                 return false;
 143             if (!AddCryptedKey(mKey.first, vchCryptedSecret))
 144                 return false;
 145         }
 146         mapKeys.clear();
 147     }
 148     return true;
 149 }