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 #ifndef BITCOIN_KEYSTORE_H
6 #define BITCOIN_KEYSTORE_H
11 // A virtual base class for key stores
15 mutable CCriticalSection cs_KeyStore;
18 // Add a key to the store.
19 virtual bool AddKey(const CKey& key) =0;
21 // Check whether a key corresponding to a given address is present in the store.
22 virtual bool HaveKey(const CBitcoinAddress &address) const =0;
23 virtual bool GetKey(const CBitcoinAddress &address, CKey& keyOut) const
26 if (!GetSecret(address, vchSecret))
28 if (!keyOut.SetSecret(vchSecret))
32 virtual void GetKeys(std::set<CBitcoinAddress> &setAddress) const =0;
33 virtual bool GetPubKey(const CBitcoinAddress &address, std::vector<unsigned char>& vchPubKeyOut) const;
35 // Support for BIP 0013 : see https://en.bitcoin.it/wiki/BIP_0013
36 virtual bool AddCScript(const uint160 &hash, const CScript& redeemScript) =0;
37 virtual bool HaveCScript(const uint160 &hash) const =0;
38 virtual bool GetCScript(const uint160 &hash, CScript& redeemScriptOut) const =0;
40 // Generate a new key, and add it to the store
41 virtual std::vector<unsigned char> GenerateNewKey();
42 virtual bool GetSecret(const CBitcoinAddress &address, CSecret& vchSecret) const
45 if (!GetKey(address, key))
47 vchSecret = key.GetSecret();
52 typedef std::map<CBitcoinAddress, CSecret> KeyMap;
53 typedef std::map<uint160, CScript > ScriptMap;
55 // Basic key store, that keeps keys in an address->secret map
56 class CBasicKeyStore : public CKeyStore
63 bool AddKey(const CKey& key);
64 bool HaveKey(const CBitcoinAddress &address) const
67 CRITICAL_BLOCK(cs_KeyStore)
68 result = (mapKeys.count(address) > 0);
71 void GetKeys(std::set<CBitcoinAddress> &setAddress) const
74 CRITICAL_BLOCK(cs_KeyStore)
76 KeyMap::const_iterator mi = mapKeys.begin();
77 while (mi != mapKeys.end())
79 setAddress.insert((*mi).first);
84 bool GetSecret(const CBitcoinAddress &address, CSecret &vchSecret) const
86 CRITICAL_BLOCK(cs_KeyStore)
88 KeyMap::const_iterator mi = mapKeys.find(address);
89 if (mi != mapKeys.end())
91 vchSecret = (*mi).second;
97 virtual bool AddCScript(const uint160 &hash, const CScript& redeemScript);
98 virtual bool HaveCScript(const uint160 &hash) const;
99 virtual bool GetCScript(const uint160 &hash, CScript& redeemScriptOut) const;
102 typedef std::map<CBitcoinAddress, std::pair<std::vector<unsigned char>, std::vector<unsigned char> > > CryptedKeyMap;
104 // Keystore which keeps the private keys encrypted
105 // It derives from the basic key store, which is used if no encryption is active.
106 class CCryptoKeyStore : public CBasicKeyStore
109 CryptedKeyMap mapCryptedKeys;
111 CKeyingMaterial vMasterKey;
113 // if fUseCrypto is true, mapKeys must be empty
114 // if fUseCrypto is false, vMasterKey must be empty
120 // will encrypt previously unencrypted keys
121 bool EncryptKeys(CKeyingMaterial& vMasterKeyIn);
123 bool Unlock(const CKeyingMaterial& vMasterKeyIn);
126 CCryptoKeyStore() : fUseCrypto(false)
130 bool IsCrypted() const
135 bool IsLocked() const
140 CRITICAL_BLOCK(cs_KeyStore)
141 result = vMasterKey.empty();
150 CRITICAL_BLOCK(cs_KeyStore)
156 virtual bool AddCryptedKey(const std::vector<unsigned char> &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret);
157 std::vector<unsigned char> GenerateNewKey();
158 bool AddKey(const CKey& key);
159 bool HaveKey(const CBitcoinAddress &address) const
161 CRITICAL_BLOCK(cs_KeyStore)
164 return CBasicKeyStore::HaveKey(address);
165 return mapCryptedKeys.count(address) > 0;
169 bool GetSecret(const CBitcoinAddress &address, CSecret& vchSecret) const;
170 bool GetPubKey(const CBitcoinAddress &address, std::vector<unsigned char>& vchPubKeyOut) const;
171 void GetKeys(std::set<CBitcoinAddress> &setAddress) const
175 CBasicKeyStore::GetKeys(setAddress);
179 CryptedKeyMap::const_iterator mi = mapCryptedKeys.begin();
180 while (mi != mapCryptedKeys.end())
182 setAddress.insert((*mi).first);