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 std::vector<unsigned char> CKeyStore::GenerateNewKey()
  12 {
  13     RandAddSeedPerfmon();
  14     CKey key;
  15     key.MakeNewKey();
  16     if (!AddKey(key))
  17         throw std::runtime_error("CKeyStore::GenerateNewKey() : AddKey failed");
  18     return key.GetPubKey();
  19 }
  20
  21 bool CKeyStore::GetPubKey(const CBitcoinAddress &address, std::vector<unsigned char> &vchPubKeyOut) const
  22 {
  23     CKey key;
  24     if (!GetKey(address, key))
  25         return false;
  26     vchPubKeyOut = key.GetPubKey();
  27     return true;
  28 }
  29
  30 bool CBasicKeyStore::AddKey(const CKey& key)
  31 {
  32     bool fCompressed = false;
  33     CSecret secret = key.GetSecret(fCompressed);
  34     CRITICAL_BLOCK(cs_KeyStore)
  35         mapKeys[CBitcoinAddress(key.GetPubKey())] = make_pair(secret, fCompressed);
  36     return true;
  37 }
  38
  39 bool CBasicKeyStore::AddCScript(const CScript& redeemScript)
  40 {
  41     CRITICAL_BLOCK(cs_KeyStore)
  42         mapScripts[Hash160(redeemScript)] = redeemScript;
  43     return true;
  44 }
  45
  46 bool CBasicKeyStore::HaveCScript(const uint160& hash) const
  47 {
  48     bool result;
  49     CRITICAL_BLOCK(cs_KeyStore)
  50         result = (mapScripts.count(hash) > 0);
  51     return result;
  52 }
  53
  54
  55 bool CBasicKeyStore::GetCScript(const uint160 &hash, CScript& redeemScriptOut) const
  56 {
  57     CRITICAL_BLOCK(cs_KeyStore)
  58     {
  59         ScriptMap::const_iterator mi = mapScripts.find(hash);
  60         if (mi != mapScripts.end())
  61         {
  62             redeemScriptOut = (*mi).second;
  63             return true;
  64         }
  65     }
  66     return false;
  67 }
  68
  69 bool CCryptoKeyStore::SetCrypted()
  70 {
  71     CRITICAL_BLOCK(cs_KeyStore)
  72     {
  73         if (fUseCrypto)
  74             return true;
  75         if (!mapKeys.empty())
  76             return false;
  77         fUseCrypto = true;
  78     }
  79     return true;
  80 }
  81
  82 bool CCryptoKeyStore::Unlock(const CKeyingMaterial& vMasterKeyIn)
  83 {
  84     CRITICAL_BLOCK(cs_KeyStore)
  85     {
  86         if (!SetCrypted())
  87             return false;
  88
  89         CryptedKeyMap::const_iterator mi = mapCryptedKeys.begin();
  90         for (; mi != mapCryptedKeys.end(); ++mi)
  91         {
  92             const std::vector<unsigned char> &vchPubKey = (*mi).second.first;
  93             const std::vector<unsigned char> &vchCryptedSecret = (*mi).second.second;
  94             CSecret vchSecret;
  95             if(!DecryptSecret(vMasterKeyIn, vchCryptedSecret, Hash(vchPubKey.begin(), vchPubKey.end()), vchSecret))
  96                 return false;
  97             CKey key;
  98             key.SetPubKey(vchPubKey);
  99             key.SetSecret(vchSecret);
 100             if (key.GetPubKey() == vchPubKey)
 101                 break;
 102             return false;
 103         }
 104         vMasterKey = vMasterKeyIn;
 105     }
 106     return true;
 107 }
 108
 109 bool CCryptoKeyStore::AddKey(const CKey& key)
 110 {
 111     CRITICAL_BLOCK(cs_KeyStore)
 112     {
 113         if (!IsCrypted())
 114             return CBasicKeyStore::AddKey(key);
 115
 116         if (IsLocked())
 117             return false;
 118
 119         std::vector<unsigned char> vchCryptedSecret;
 120         std::vector<unsigned char> vchPubKey = key.GetPubKey();
 121         bool fCompressed;
 122         if (!EncryptSecret(vMasterKey, key.GetSecret(fCompressed), Hash(vchPubKey.begin(), vchPubKey.end()), vchCryptedSecret))
 123             return false;
 124
 125         if (!AddCryptedKey(key.GetPubKey(), vchCryptedSecret))
 126             return false;
 127     }
 128     return true;
 129 }
 130
 131
 132 bool CCryptoKeyStore::AddCryptedKey(const std::vector<unsigned char> &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret)
 133 {
 134     CRITICAL_BLOCK(cs_KeyStore)
 135     {
 136         if (!SetCrypted())
 137             return false;
 138
 139         mapCryptedKeys[CBitcoinAddress(vchPubKey)] = make_pair(vchPubKey, vchCryptedSecret);
 140     }
 141     return true;
 142 }
 143
 144 bool CCryptoKeyStore::GetKey(const CBitcoinAddress &address, CKey& keyOut) const
 145 {
 146     CRITICAL_BLOCK(cs_KeyStore)
 147     {
 148         if (!IsCrypted())
 149             return CBasicKeyStore::GetKey(address, keyOut);
 150
 151         CryptedKeyMap::const_iterator mi = mapCryptedKeys.find(address);
 152         if (mi != mapCryptedKeys.end())
 153         {
 154             const std::vector<unsigned char> &vchPubKey = (*mi).second.first;
 155             const std::vector<unsigned char> &vchCryptedSecret = (*mi).second.second;
 156             CSecret vchSecret;
 157             if (!DecryptSecret(vMasterKey, vchCryptedSecret, Hash(vchPubKey.begin(), vchPubKey.end()), vchSecret))
 158                 return false;
 159             keyOut.SetPubKey(vchPubKey);
 160             keyOut.SetSecret(vchSecret);
 161             return true;
 162         }
 163     }
 164     return false;
 165 }
 166
 167 bool CCryptoKeyStore::GetPubKey(const CBitcoinAddress &address, std::vector<unsigned char>& vchPubKeyOut) const
 168 {
 169     CRITICAL_BLOCK(cs_KeyStore)
 170     {
 171         if (!IsCrypted())
 172             return CKeyStore::GetPubKey(address, vchPubKeyOut);
 173
 174         CryptedKeyMap::const_iterator mi = mapCryptedKeys.find(address);
 175         if (mi != mapCryptedKeys.end())
 176         {
 177             vchPubKeyOut = (*mi).second.first;
 178             return true;
 179         }
 180     }
 181     return false;
 182 }
 183
 184 bool CCryptoKeyStore::EncryptKeys(CKeyingMaterial& vMasterKeyIn)
 185 {
 186     CRITICAL_BLOCK(cs_KeyStore)
 187     {
 188         if (!mapCryptedKeys.empty() || IsCrypted())
 189             return false;
 190
 191         fUseCrypto = true;
 192         BOOST_FOREACH(KeyMap::value_type& mKey, mapKeys)
 193         {
 194             CKey key;
 195             if (!key.SetSecret(mKey.second.first, false))
 196                 return false;
 197             const std::vector<unsigned char> vchPubKey = key.GetPubKey();
 198             std::vector<unsigned char> vchCryptedSecret;
 199             bool fCompressed;
 200             if (!EncryptSecret(vMasterKeyIn, key.GetSecret(fCompressed), Hash(vchPubKey.begin(), vchPubKey.end()), vchCryptedSecret))
 201                 return false;
 202             if (!AddCryptedKey(vchPubKey, vchCryptedSecret))
 203                 return false;
 204         }
 205         mapKeys.clear();
 206     }
 207     return true;
 208 }