X-Git-Url: https://git.novaco.in/?a=blobdiff_plain;f=src%2Fkeystore.h;h=3b91de6fb444dd650ecf9652ef89670c1607fb7f;hb=93db3fceac1bfe274bc0fd906428a20e709e2da5;hp=8d445befea3e76bea698d600ff6db2d8e41ee567;hpb=4e87d341f75f13bbd7d108c31c03886fbc4df56f;p=novacoin.git

diff --git a/src/keystore.h b/src/keystore.h
index 8d445be..3b91de6 100644
--- a/src/keystore.h
+++ b/src/keystore.h
@@ -1,4 +1,5 @@
-// Copyright (c) 2009-2011 Satoshi Nakamoto & Bitcoin developers
+// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2011 The Bitcoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
 #ifndef BITCOIN_KEYSTORE_H
@@ -6,19 +7,45 @@
 
 #include "crypter.h"
 
+// A virtual base class for key stores
 class CKeyStore
 {
-public:
+protected:
     mutable CCriticalSection cs_KeyStore;
 
+public:
+    // Add a key to the store.
     virtual bool AddKey(const CKey& key) =0;
-    virtual bool HaveKey(const std::vector<unsigned char> &vchPubKey) const =0;
-    virtual bool GetPrivKey(const std::vector<unsigned char> &vchPubKey, CPrivKey& keyOut) const =0;
+
+    // Check whether a key corresponding to a given address is present in the store.
+    virtual bool HaveKey(const CBitcoinAddress &address) const =0;
+    virtual bool GetKey(const CBitcoinAddress &address, CKey& keyOut) const 
+    {
+        CSecret vchSecret;
+        if (!GetSecret(address, vchSecret))
+            return false;
+        if (!keyOut.SetSecret(vchSecret))
+            return false;
+        return true;
+    }
+    virtual void GetKeys(std::set<CBitcoinAddress> &setAddress) const =0;
+    virtual bool GetPubKey(const CBitcoinAddress &address, std::vector<unsigned char>& vchPubKeyOut) const;
+
+    // Generate a new key, and add it to the store
     virtual std::vector<unsigned char> GenerateNewKey();
+    virtual bool GetSecret(const CBitcoinAddress &address, CSecret& vchSecret) const
+    {
+        CKey key;
+        if (!GetKey(address, key))
+            return false;
+        vchSecret = key.GetSecret();
+        return true;
+    }
 };
 
-typedef std::map<std::vector<unsigned char>, CPrivKey> KeyMap;
+typedef std::map<CBitcoinAddress, CSecret> KeyMap;
 
+// Basic key store, that keeps keys in an address->secret map
 class CBasicKeyStore : public CKeyStore
 {
 protected:
@@ -26,26 +53,49 @@ protected:
 
 public:
     bool AddKey(const CKey& key);
-    bool HaveKey(const std::vector<unsigned char> &vchPubKey) const
+    bool HaveKey(const CBitcoinAddress &address) const
     {
-        return (mapKeys.count(vchPubKey) > 0);
+        bool result;
+        CRITICAL_BLOCK(cs_KeyStore)
+            result = (mapKeys.count(address) > 0);
+        return result;
     }
-    bool GetPrivKey(const std::vector<unsigned char> &vchPubKey, CPrivKey& keyOut) const
+    void GetKeys(std::set<CBitcoinAddress> &setAddress) const
     {
-        std::map<std::vector<unsigned char>, CPrivKey>::const_iterator mi = mapKeys.find(vchPubKey);
-        if (mi != mapKeys.end())
+        setAddress.clear();
+        CRITICAL_BLOCK(cs_KeyStore)
         {
-            keyOut = (*mi).second;
-            return true;
+            KeyMap::const_iterator mi = mapKeys.begin();
+            while (mi != mapKeys.end())
+            {
+                setAddress.insert((*mi).first);
+                mi++;
+            }
+        }
+    }
+    bool GetSecret(const CBitcoinAddress &address, CSecret &vchSecret) const
+    {
+        CRITICAL_BLOCK(cs_KeyStore)
+        {
+            KeyMap::const_iterator mi = mapKeys.find(address);
+            if (mi != mapKeys.end())
+            {
+                vchSecret = (*mi).second;
+                return true;
+            }
         }
         return false;
     }
 };
 
+typedef std::map<CBitcoinAddress, std::pair<std::vector<unsigned char>, std::vector<unsigned char> > > CryptedKeyMap;
+
+// Keystore which keeps the private keys encrypted
+// It derives from the basic key store, which is used if no encryption is active.
 class CCryptoKeyStore : public CBasicKeyStore
 {
 private:
-    std::map<std::vector<unsigned char>, std::vector<unsigned char> > mapCryptedKeys;
+    CryptedKeyMap mapCryptedKeys;
 
     CKeyingMaterial vMasterKey;
 
@@ -54,15 +104,7 @@ private:
     bool fUseCrypto;
 
 protected:
-    bool SetCrypted()
-    {
-        if (fUseCrypto)
-            return true;
-        if (!mapKeys.empty())
-            return false;
-        fUseCrypto = true;
-        return true;
-    }
+    bool SetCrypted();
 
     // will encrypt previously unencrypted keys
     bool EncryptKeys(CKeyingMaterial& vMasterKeyIn);
@@ -70,8 +112,6 @@ protected:
     bool Unlock(const CKeyingMaterial& vMasterKeyIn);
 
 public:
-    mutable CCriticalSection cs_vMasterKey; //No guarantees master key wont get locked before you can use it, so lock this first
-
     CCryptoKeyStore() : fUseCrypto(false)
     {
     }
@@ -85,31 +125,53 @@ public:
     {
         if (!IsCrypted())
             return false;
-        return vMasterKey.empty();
+        bool result;
+        CRITICAL_BLOCK(cs_KeyStore)
+            result = vMasterKey.empty();
+        return result;
     }
 
     bool Lock()
     {
-        CRITICAL_BLOCK(cs_vMasterKey)
-        {
-            if (!SetCrypted())
-                return false;
+        if (!SetCrypted())
+            return false;
 
+        CRITICAL_BLOCK(cs_KeyStore)
             vMasterKey.clear();
-        }
+
         return true;
     }
 
     virtual bool AddCryptedKey(const std::vector<unsigned char> &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret);
     std::vector<unsigned char> GenerateNewKey();
     bool AddKey(const CKey& key);
-    bool HaveKey(const std::vector<unsigned char> &vchPubKey) const
+    bool HaveKey(const CBitcoinAddress &address) const
+    {
+        CRITICAL_BLOCK(cs_KeyStore)
+        {
+            if (!IsCrypted())
+                return CBasicKeyStore::HaveKey(address);
+            return mapCryptedKeys.count(address) > 0;
+        }
+        return false;
+    }
+    bool GetSecret(const CBitcoinAddress &address, CSecret& vchSecret) const;
+    bool GetPubKey(const CBitcoinAddress &address, std::vector<unsigned char>& vchPubKeyOut) const;
+    void GetKeys(std::set<CBitcoinAddress> &setAddress) const
     {
         if (!IsCrypted())
-            return CBasicKeyStore::HaveKey(vchPubKey);
-        return mapCryptedKeys.count(vchPubKey) > 0;
+        {
+            CBasicKeyStore::GetKeys(setAddress);
+            return;
+        }
+        setAddress.clear();
+        CryptedKeyMap::const_iterator mi = mapCryptedKeys.begin();
+        while (mi != mapCryptedKeys.end())
+        {
+            setAddress.insert((*mi).first);
+            mi++;
+        }
     }
-    bool GetPrivKey(const std::vector<unsigned char> &vchPubKey, CPrivKey& keyOut) const;
 };
 
 #endif