src/keystore.cpp

   1 // Copyright (c) 2009-2010 Satoshi Nakamoto
   2 // Copyright (c) 2011 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 "db.h"
   8 #include "crypter.h"
   9
  10 std::vector<unsigned char> CKeyStore::GenerateNewKey()
  11 {
  12     RandAddSeedPerfmon();
  13     CKey key;
  14     key.MakeNewKey();
  15     if (!AddKey(key))
  16         throw std::runtime_error("CKeyStore::GenerateNewKey() : AddKey failed");
  17     return key.GetPubKey();
  18 }
  19
  20 bool CKeyStore::GetPubKey(const CBitcoinAddress &address, std::vector<unsigned char> &vchPubKeyOut) const
  21 {
  22     CKey key;
  23     if (!GetKey(address, key))
  24         return false;
  25     vchPubKeyOut = key.GetPubKey();
  26     return true;
  27 }
  28
  29 bool CBasicKeyStore::AddKey(const CKey& key)
  30 {
  31     CRITICAL_BLOCK(cs_KeyStore)
  32         mapKeys[key.GetAddress()] = key.GetSecret();
  33     return true;
  34 }
  35
  36 std::vector<unsigned char> CCryptoKeyStore::GenerateNewKey()
  37 {
  38     RandAddSeedPerfmon();
  39     CKey key;
  40     key.MakeNewKey();
  41     if (!AddKey(key))
  42         throw std::runtime_error("CCryptoKeyStore::GenerateNewKey() : AddKey failed");
  43     return key.GetPubKey();
  44 }
  45
  46 bool CCryptoKeyStore::Unlock(const CKeyingMaterial& vMasterKeyIn)
  47 {
  48     CRITICAL_BLOCK(cs_vMasterKey)
  49     {
  50         if (!SetCrypted())
  51             return false;
  52
  53         CryptedKeyMap::const_iterator mi = mapCryptedKeys.begin();
  54         for (; mi != mapCryptedKeys.end(); ++mi)
  55         {
  56             const std::vector<unsigned char> &vchPubKey = (*mi).second.first;
  57             const std::vector<unsigned char> &vchCryptedSecret = (*mi).second.second;
  58             CSecret vchSecret;
  59             if(!DecryptSecret(vMasterKeyIn, vchCryptedSecret, Hash(vchPubKey.begin(), vchPubKey.end()), vchSecret))
  60                 return false;
  61             CKey key;
  62             key.SetSecret(vchSecret);
  63             if (key.GetPubKey() == vchPubKey)
  64                 break;
  65             return false;
  66         }
  67         vMasterKey = vMasterKeyIn;
  68     }
  69     return true;
  70 }
  71
  72 bool CCryptoKeyStore::AddKey(const CKey& key)
  73 {
  74     CRITICAL_BLOCK(cs_KeyStore)
  75     CRITICAL_BLOCK(cs_vMasterKey)
  76     {
  77         if (!IsCrypted())
  78             return CBasicKeyStore::AddKey(key);
  79
  80         if (IsLocked())
  81             return false;
  82
  83         std::vector<unsigned char> vchCryptedSecret;
  84         std::vector<unsigned char> vchPubKey = key.GetPubKey();
  85         if (!EncryptSecret(vMasterKey, key.GetSecret(), Hash(vchPubKey.begin(), vchPubKey.end()), vchCryptedSecret))
  86             return false;
  87
  88         if (!AddCryptedKey(key.GetPubKey(), vchCryptedSecret))
  89             return false;
  90     }
  91     return true;
  92 }
  93
  94
  95 bool CCryptoKeyStore::AddCryptedKey(const std::vector<unsigned char> &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret)
  96 {
  97     CRITICAL_BLOCK(cs_KeyStore)
  98     {
  99         if (!SetCrypted())
 100             return false;
 101
 102         mapCryptedKeys[CBitcoinAddress(vchPubKey)] = make_pair(vchPubKey, vchCryptedSecret);
 103     }
 104     return true;
 105 }
 106
 107 bool CCryptoKeyStore::GetKey(const CBitcoinAddress &address, CKey& keyOut) const
 108 {
 109     CRITICAL_BLOCK(cs_vMasterKey)
 110     {
 111         if (!IsCrypted())
 112             return CBasicKeyStore::GetKey(address, keyOut);
 113
 114         CryptedKeyMap::const_iterator mi = mapCryptedKeys.find(address);
 115         if (mi != mapCryptedKeys.end())
 116         {
 117             const std::vector<unsigned char> &vchPubKey = (*mi).second.first;
 118             const std::vector<unsigned char> &vchCryptedSecret = (*mi).second.second;
 119             CSecret vchSecret;
 120             if (!DecryptSecret(vMasterKey, vchCryptedSecret, Hash(vchPubKey.begin(), vchPubKey.end()), vchSecret))
 121                 return false;
 122             keyOut.SetSecret(vchSecret);
 123             return true;
 124         }
 125     }
 126     return false;
 127 }
 128
 129 bool CCryptoKeyStore::GetPubKey(const CBitcoinAddress &address, std::vector<unsigned char>& vchPubKeyOut) const
 130 {
 131     CRITICAL_BLOCK(cs_vMasterKey)
 132     {
 133         if (!IsCrypted())
 134             return CKeyStore::GetPubKey(address, vchPubKeyOut);
 135
 136         CryptedKeyMap::const_iterator mi = mapCryptedKeys.find(address);
 137         if (mi != mapCryptedKeys.end())
 138         {
 139             vchPubKeyOut = (*mi).second.first;
 140             return true;
 141         }
 142     }
 143     return false;
 144 }
 145
 146 bool CCryptoKeyStore::EncryptKeys(CKeyingMaterial& vMasterKeyIn)
 147 {
 148     CRITICAL_BLOCK(cs_KeyStore)
 149     CRITICAL_BLOCK(cs_vMasterKey)
 150     {
 151         if (!mapCryptedKeys.empty() || IsCrypted())
 152             return false;
 153
 154         fUseCrypto = true;
 155         CKey key;
 156         BOOST_FOREACH(KeyMap::value_type& mKey, mapKeys)
 157         {
 158             if (!key.SetSecret(mKey.second))
 159                 return false;
 160             const std::vector<unsigned char> vchPubKey = key.GetPubKey();
 161             std::vector<unsigned char> vchCryptedSecret;
 162             if (!EncryptSecret(vMasterKeyIn, key.GetSecret(), Hash(vchPubKey.begin(), vchPubKey.end()), vchCryptedSecret))
 163                 return false;
 164             if (!AddCryptedKey(vchPubKey, vchCryptedSecret))
 165                 return false;
 166         }
 167         mapKeys.clear();
 168     }
 169     return true;
 170 }