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 COPYING 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             if (vchSecret.size() != 32)
  88                 return false;
  89             CKey key;
  90             key.SetPubKey(vchPubKey);
  91             key.SetSecret(vchSecret);
  92             if (key.GetPubKey() == vchPubKey)
  93                 break;
  94             return false;
  95         }
  96         vMasterKey = vMasterKeyIn;
  97     }
  98     return true;
  99 }
 100
 101 bool CCryptoKeyStore::AddKey(const CKey& key)
 102 {
 103     CRITICAL_BLOCK(cs_KeyStore)
 104     {
 105         if (!IsCrypted())
 106             return CBasicKeyStore::AddKey(key);
 107
 108         if (IsLocked())
 109             return false;
 110
 111         std::vector<unsigned char> vchCryptedSecret;
 112         std::vector<unsigned char> vchPubKey = key.GetPubKey();
 113         bool fCompressed;
 114         if (!EncryptSecret(vMasterKey, key.GetSecret(fCompressed), Hash(vchPubKey.begin(), vchPubKey.end()), vchCryptedSecret))
 115             return false;
 116
 117         if (!AddCryptedKey(key.GetPubKey(), vchCryptedSecret))
 118             return false;
 119     }
 120     return true;
 121 }
 122
 123
 124 bool CCryptoKeyStore::AddCryptedKey(const std::vector<unsigned char> &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret)
 125 {
 126     CRITICAL_BLOCK(cs_KeyStore)
 127     {
 128         if (!SetCrypted())
 129             return false;
 130
 131         mapCryptedKeys[CBitcoinAddress(vchPubKey)] = make_pair(vchPubKey, vchCryptedSecret);
 132     }
 133     return true;
 134 }
 135
 136 bool CCryptoKeyStore::GetKey(const CBitcoinAddress &address, CKey& keyOut) const
 137 {
 138     CRITICAL_BLOCK(cs_KeyStore)
 139     {
 140         if (!IsCrypted())
 141             return CBasicKeyStore::GetKey(address, keyOut);
 142
 143         CryptedKeyMap::const_iterator mi = mapCryptedKeys.find(address);
 144         if (mi != mapCryptedKeys.end())
 145         {
 146             const std::vector<unsigned char> &vchPubKey = (*mi).second.first;
 147             const std::vector<unsigned char> &vchCryptedSecret = (*mi).second.second;
 148             CSecret vchSecret;
 149             if (!DecryptSecret(vMasterKey, vchCryptedSecret, Hash(vchPubKey.begin(), vchPubKey.end()), vchSecret))
 150                 return false;
 151             if (vchSecret.size() != 32)
 152                 return false;
 153             keyOut.SetPubKey(vchPubKey);
 154             keyOut.SetSecret(vchSecret);
 155             return true;
 156         }
 157     }
 158     return false;
 159 }
 160
 161 bool CCryptoKeyStore::GetPubKey(const CBitcoinAddress &address, std::vector<unsigned char>& vchPubKeyOut) const
 162 {
 163     CRITICAL_BLOCK(cs_KeyStore)
 164     {
 165         if (!IsCrypted())
 166             return CKeyStore::GetPubKey(address, vchPubKeyOut);
 167
 168         CryptedKeyMap::const_iterator mi = mapCryptedKeys.find(address);
 169         if (mi != mapCryptedKeys.end())
 170         {
 171             vchPubKeyOut = (*mi).second.first;
 172             return true;
 173         }
 174     }
 175     return false;
 176 }
 177
 178 bool CCryptoKeyStore::EncryptKeys(CKeyingMaterial& vMasterKeyIn)
 179 {
 180     CRITICAL_BLOCK(cs_KeyStore)
 181     {
 182         if (!mapCryptedKeys.empty() || IsCrypted())
 183             return false;
 184
 185         fUseCrypto = true;
 186         BOOST_FOREACH(KeyMap::value_type& mKey, mapKeys)
 187         {
 188             CKey key;
 189             if (!key.SetSecret(mKey.second.first, mKey.second.second))
 190                 return false;
 191             const std::vector<unsigned char> vchPubKey = key.GetPubKey();
 192             std::vector<unsigned char> vchCryptedSecret;
 193             bool fCompressed;
 194             if (!EncryptSecret(vMasterKeyIn, key.GetSecret(fCompressed), Hash(vchPubKey.begin(), vchPubKey.end()), vchCryptedSecret))
 195                 return false;
 196             if (!AddCryptedKey(vchPubKey, vchCryptedSecret))
 197                 return false;
 198         }
 199         mapKeys.clear();
 200     }
 201     return true;
 202 }