src/keystore.h

   1 // Copyright (c) 2009-2010 Satoshi Nakamoto
   2 // Copyright (c) 2009-2014 The Bitcoin Core developers
   3 // Distributed under the MIT software license, see the accompanying
   4 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   5
   6 #ifndef BITCOIN_KEYSTORE_H
   7 #define BITCOIN_KEYSTORE_H
   8
   9 #include "key.h"
  10 #include "pubkey.h"
  11 #include "script/script.h"
  12 #include "script/standard.h"
  13 #include "sync.h"
  14
  15 #include <boost/signals2/signal.hpp>
  16 #include <boost/variant.hpp>
  17
  18 /** A virtual base class for key stores */
  19 class CKeyStore
  20 {
  21 protected:
  22     mutable CCriticalSection cs_KeyStore;
  23
  24 public:
  25     virtual ~CKeyStore() {}
  26
  27     //! Add a key to the store.
  28     virtual bool AddKeyPubKey(const CKey &key, const CPubKey &pubkey) =0;
  29     virtual bool AddKey(const CKey &key);
  30
  31     //! Check whether a key corresponding to a given address is present in the store.
  32     virtual bool HaveKey(const CKeyID &address) const =0;
  33     virtual bool GetKey(const CKeyID &address, CKey& keyOut) const =0;
  34     virtual void GetKeys(std::set<CKeyID> &setAddress) const =0;
  35     virtual bool GetPubKey(const CKeyID &address, CPubKey& vchPubKeyOut) const =0;
  36
  37     //! Support for BIP 0013 : see https://github.com/bitcoin/bips/blob/master/bip-0013.mediawiki
  38     virtual bool AddCScript(const CScript& redeemScript) =0;
  39     virtual bool HaveCScript(const CScriptID &hash) const =0;
  40     virtual bool GetCScript(const CScriptID &hash, CScript& redeemScriptOut) const =0;
  41
  42     //! Support for Watch-only addresses
  43     virtual bool AddWatchOnly(const CScript &dest) =0;
  44     virtual bool RemoveWatchOnly(const CScript &dest) =0;
  45     virtual bool HaveWatchOnly(const CScript &dest) const =0;
  46     virtual bool HaveWatchOnly() const =0;
  47 };
  48
  49 typedef std::map<CKeyID, CKey> KeyMap;
  50 typedef std::map<CKeyID, CPubKey> WatchKeyMap;
  51 typedef std::map<CScriptID, CScript > ScriptMap;
  52 typedef std::set<CScript> WatchOnlySet;
  53
  54 /** Basic key store, that keeps keys in an address->secret map */
  55 class CBasicKeyStore : public CKeyStore
  56 {
  57 protected:
  58     KeyMap mapKeys;
  59     WatchKeyMap mapWatchKeys;
  60     ScriptMap mapScripts;
  61     WatchOnlySet setWatchOnly;
  62
  63 public:
  64     bool AddKeyPubKey(const CKey& key, const CPubKey &pubkey);
  65     bool GetPubKey(const CKeyID &address, CPubKey& vchPubKeyOut) const;
  66     bool HaveKey(const CKeyID &address) const
  67     {
  68         bool result;
  69         {
  70             LOCK(cs_KeyStore);
  71             result = (mapKeys.count(address) > 0);
  72         }
  73         return result;
  74     }
  75     void GetKeys(std::set<CKeyID> &setAddress) const
  76     {
  77         setAddress.clear();
  78         {
  79             LOCK(cs_KeyStore);
  80             KeyMap::const_iterator mi = mapKeys.begin();
  81             while (mi != mapKeys.end())
  82             {
  83                 setAddress.insert((*mi).first);
  84                 mi++;
  85             }
  86         }
  87     }
  88     bool GetKey(const CKeyID &address, CKey &keyOut) const
  89     {
  90         {
  91             LOCK(cs_KeyStore);
  92             KeyMap::const_iterator mi = mapKeys.find(address);
  93             if (mi != mapKeys.end())
  94             {
  95                 keyOut = mi->second;
  96                 return true;
  97             }
  98         }
  99         return false;
 100     }
 101     virtual bool AddCScript(const CScript& redeemScript);
 102     virtual bool HaveCScript(const CScriptID &hash) const;
 103     virtual bool GetCScript(const CScriptID &hash, CScript& redeemScriptOut) const;
 104
 105     virtual bool AddWatchOnly(const CScript &dest);
 106     virtual bool RemoveWatchOnly(const CScript &dest);
 107     virtual bool HaveWatchOnly(const CScript &dest) const;
 108     virtual bool HaveWatchOnly() const;
 109 };
 110
 111 typedef std::vector<unsigned char, secure_allocator<unsigned char> > CKeyingMaterial;
 112 typedef std::map<CKeyID, std::pair<CPubKey, std::vector<unsigned char> > > CryptedKeyMap;
 113
 114 #endif // BITCOIN_KEYSTORE_H