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Compressed pubkeys

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This patch enabled compressed pubkeys when -compressedpubkeys is passed.
These are 33 bytes instead of 65, and require only marginally more CPU
power when verifying. Compressed pubkeys have a different corresponding
address, so it is determined at generation. When -compressedpubkeys is
given, all newly generated addresses will use a compressed key, while
older/other addresses keep using normal keys. Unpatched clients will
relay and verify these transactions.
This commit is contained in:
Pieter Wuille
2011-11-21 02:46:28 +01:00
parent 1684f98b27
commit 11529c6e4f
7 changed files with 79 additions and 50 deletions
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24
src/keystore.h
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@@ -20,15 +20,7 @@ public:
// 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 bool GetKey(const CBitcoinAddress &address, CKey& keyOut) const =0;
virtual void GetKeys(std::set<CBitcoinAddress> &setAddress) const =0;
virtual bool GetPubKey(const CBitcoinAddress &address, std::vector<unsigned char>& vchPubKeyOut) const;
@@ -39,17 +31,17 @@ public:
// 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
virtual bool GetSecret(const CBitcoinAddress &address, CSecret& vchSecret, bool &fCompressed) const
{
CKey key;
if (!GetKey(address, key))
return false;
vchSecret = key.GetSecret();
vchSecret = key.GetSecret(fCompressed);
return true;
}
};
typedef std::map<CBitcoinAddress, CSecret> KeyMap;
typedef std::map<CBitcoinAddress, std::pair<CSecret, bool> > KeyMap;
typedef std::map<uint160, CScript > ScriptMap;
// Basic key store, that keeps keys in an address->secret map
@@ -81,14 +73,15 @@ public:
}
}
}
bool GetSecret(const CBitcoinAddress &address, CSecret &vchSecret) const
bool GetKey(const CBitcoinAddress &address, CKey &keyOut) const
{
CRITICAL_BLOCK(cs_KeyStore)
{
KeyMap::const_iterator mi = mapKeys.find(address);
if (mi != mapKeys.end())
{
vchSecret = (*mi).second;
keyOut.Reset();
keyOut.SetSecret((*mi).second.first, (*mi).second.second);
return true;
}
}
@@ -154,7 +147,6 @@ public:
}
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 CBitcoinAddress &address) const
{
@@ -166,7 +158,7 @@ public:
}
return false;
}
bool GetSecret(const CBitcoinAddress &address, CSecret& vchSecret) const;
bool GetKey(const CBitcoinAddress &address, CKey& keyOut) const;
bool GetPubKey(const CBitcoinAddress &address, std::vector<unsigned char>& vchPubKeyOut) const;
void GetKeys(std::set<CBitcoinAddress> &setAddress) const
{