src/keystore.cpp

   1 // Copyright (c) 2009-2010 Satoshi Nakamoto
   2 // Copyright (c) 2009-2012 The Bitcoin developers
   3 // Distributed under the MIT/X11 software license, see the accompanying
   4 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
   5
   6 #include "headers.h"
   7 #include "crypter.h"
   8 #include "db.h"
   9 #include "script.h"
  10
  11 bool CKeyStore::GetPubKey(const CBitcoinAddress &address, std::vector<unsigned char> &vchPubKeyOut) const
  12 {
  13     CKey key;
  14     if (!GetKey(address, key))
  15         return false;
  16     vchPubKeyOut = key.GetPubKey();
  17     return true;
  18 }
  19
  20 bool CBasicKeyStore::AddKey(const CKey& key)
  21 {
  22     bool fCompressed = false;
  23     CSecret secret = key.GetSecret(fCompressed);
  24     CRITICAL_BLOCK(cs_KeyStore)
  25         mapKeys[CBitcoinAddress(key.GetPubKey())] = make_pair(secret, fCompressed);
  26     return true;
  27 }
  28
  29 bool CBasicKeyStore::AddCScript(const CScript& redeemScript)
  30 {
  31     CRITICAL_BLOCK(cs_KeyStore)
  32         mapScripts[Hash160(redeemScript)] = redeemScript;
  33     return true;
  34 }
  35
  36 bool CBasicKeyStore::HaveCScript(const uint160& hash) const
  37 {
  38     bool result;
  39     CRITICAL_BLOCK(cs_KeyStore)
  40         result = (mapScripts.count(hash) > 0);
  41     return result;
  42 }
  43
  44
  45 bool CBasicKeyStore::GetCScript(const uint160 &hash, CScript& redeemScriptOut) const
  46 {
  47     CRITICAL_BLOCK(cs_KeyStore)
  48     {
  49         ScriptMap::const_iterator mi = mapScripts.find(hash);
  50         if (mi != mapScripts.end())
  51         {
  52             redeemScriptOut = (*mi).second;
  53             return true;
  54         }
  55     }
  56     return false;
  57 }
  58
  59 bool CCryptoKeyStore::SetCrypted()
  60 {
  61     CRITICAL_BLOCK(cs_KeyStore)
  62     {
  63         if (fUseCrypto)
  64             return true;
  65         if (!mapKeys.empty())
  66             return false;
  67         fUseCrypto = true;
  68     }
  69     return true;
  70 }
  71
  72 bool CCryptoKeyStore::Unlock(const CKeyingMaterial& vMasterKeyIn)
  73 {
  74     CRITICAL_BLOCK(cs_KeyStore)
  75     {
  76         if (!SetCrypted())
  77             return false;
  78
  79         CryptedKeyMap::const_iterator mi = mapCryptedKeys.begin();
  80         for (; mi != mapCryptedKeys.end(); ++mi)
  81         {
  82             const std::vector<unsigned char> &vchPubKey = (*mi).second.first;
  83             const std::vector<unsigned char> &vchCryptedSecret = (*mi).second.second;
  84             CSecret vchSecret;
  85             if(!DecryptSecret(vMasterKeyIn, vchCryptedSecret, Hash(vchPubKey.begin(), vchPubKey.end()), vchSecret))
  86                 return false;
  87             CKey key;
  88             key.SetPubKey(vchPubKey);
  89             key.SetSecret(vchSecret);
  90             if (key.GetPubKey() == vchPubKey)
  91                 break;
  92             return false;
  93         }
  94         vMasterKey = vMasterKeyIn;
  95     }
  96     return true;
  97 }
  98
  99 bool CCryptoKeyStore::AddKey(const CKey& key)
 100 {
 101     CRITICAL_BLOCK(cs_KeyStore)
 102     {
 103         if (!IsCrypted())
 104             return CBasicKeyStore::AddKey(key);
 105
 106         if (IsLocked())
 107             return false;
 108
 109         std::vector<unsigned char> vchCryptedSecret;
 110         std::vector<unsigned char> vchPubKey = key.GetPubKey();
 111         bool fCompressed;
 112         if (!EncryptSecret(vMasterKey, key.GetSecret(fCompressed), Hash(vchPubKey.begin(), vchPubKey.end()), vchCryptedSecret))
 113             return false;
 114
 115         if (!AddCryptedKey(key.GetPubKey(), vchCryptedSecret))
 116             return false;
 117     }
 118     return true;
 119 }
 120
 121
 122 bool CCryptoKeyStore::AddCryptedKey(const std::vector<unsigned char> &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret)
 123 {
 124     CRITICAL_BLOCK(cs_KeyStore)
 125     {
 126         if (!SetCrypted())
 127             return false;
 128
 129         mapCryptedKeys[CBitcoinAddress(vchPubKey)] = make_pair(vchPubKey, vchCryptedSecret);
 130     }
 131     return true;
 132 }
 133
 134 bool CCryptoKeyStore::GetKey(const CBitcoinAddress &address, CKey& keyOut) const
 135 {
 136     CRITICAL_BLOCK(cs_KeyStore)
 137     {
 138         if (!IsCrypted())
 139             return CBasicKeyStore::GetKey(address, keyOut);
 140
 141         CryptedKeyMap::const_iterator mi = mapCryptedKeys.find(address);
 142         if (mi != mapCryptedKeys.end())
 143         {
 144             const std::vector<unsigned char> &vchPubKey = (*mi).second.first;
 145             const std::vector<unsigned char> &vchCryptedSecret = (*mi).second.second;
 146             CSecret vchSecret;
 147             if (!DecryptSecret(vMasterKey, vchCryptedSecret, Hash(vchPubKey.begin(), vchPubKey.end()), vchSecret))
 148                 return false;
 149             keyOut.SetPubKey(vchPubKey);
 150             keyOut.SetSecret(vchSecret);
 151             return true;
 152         }
 153     }
 154     return false;
 155 }
 156
 157 bool CCryptoKeyStore::GetPubKey(const CBitcoinAddress &address, std::vector<unsigned char>& vchPubKeyOut) const
 158 {
 159     CRITICAL_BLOCK(cs_KeyStore)
 160     {
 161         if (!IsCrypted())
 162             return CKeyStore::GetPubKey(address, vchPubKeyOut);
 163
 164         CryptedKeyMap::const_iterator mi = mapCryptedKeys.find(address);
 165         if (mi != mapCryptedKeys.end())
 166         {
 167             vchPubKeyOut = (*mi).second.first;
 168             return true;
 169         }
 170     }
 171     return false;
 172 }
 173
 174 bool CCryptoKeyStore::EncryptKeys(CKeyingMaterial& vMasterKeyIn)
 175 {
 176     CRITICAL_BLOCK(cs_KeyStore)
 177     {
 178         if (!mapCryptedKeys.empty() || IsCrypted())
 179             return false;
 180
 181         fUseCrypto = true;
 182         BOOST_FOREACH(KeyMap::value_type& mKey, mapKeys)
 183         {
 184             CKey key;
 185             if (!key.SetSecret(mKey.second.first, mKey.second.second))
 186                 return false;
 187             const std::vector<unsigned char> vchPubKey = key.GetPubKey();
 188             std::vector<unsigned char> vchCryptedSecret;
 189             bool fCompressed;
 190             if (!EncryptSecret(vMasterKeyIn, key.GetSecret(fCompressed), Hash(vchPubKey.begin(), vchPubKey.end()), vchCryptedSecret))
 191                 return false;
 192             if (!AddCryptedKey(vchPubKey, vchCryptedSecret))
 193                 return false;
 194         }
 195         mapKeys.clear();
 196     }
 197     return true;
 198 }