More work on core ledger and transaction processing code.

AccountState.h

@@ -12,9 +12,20 @@ public:
 private:
     uint160 mAccountID;
     uint64 mBalance;
-    uint32 mAccountSeq, mFirstValidLedger, mLastValidLedger;
+    uint32 mAccountSeq;
+    bool mValid;
 
 public:
+	AccountState(const uint160& mAccountID);			// new account
+	AccountState(const std::vector<unsigned char>&);	// raw form
+
+	const uint160& getAccountID() const { return mAccountID; }
+	uint64 getBalance() const { return mBalance; }
+	uint32 getSeq() const { return mAccountSeq; }
+
+	bool charge(uint64 a) { mBalance+=a; }
+	bool credit(uint64 a) { mBalance-=a; }
+	void incSeq(void) { mAccountSeq++; }
 };
 
 #endif

BinaryFormats.txt

@@ -31,15 +31,13 @@ use public keys in compressed form using
 EC_KEY_set_conv_form(POINT_CONVERSION_COMPRESS) -- so our public keys are
 actually 33 bytes.
 
-Account IDs are based on the uncompressed public key. Form a 65-byte
-quantity consisting of a single byte with the value 4, the 32-byte X of the
-public key followed by the 32-byte Y of the public key. Apply SHA256 to this
-65-byte quantity. Apply RIPEMD160 to the result.
+Account IDs are based on the compressed public key. Apply SHA512 to the
+33-byte public key. Apply RIPEMD160 to the first 256 bits of the result.
 
 The resulting 20-byte value is the account ID.
 
 
-2) Transaction (source/signed format) 148-bytes
+2) Transaction (source/signed format) 145-bytes
 
 Fields:
 1) 20-byte destination account
@@ -48,10 +46,9 @@ Fields:
 4) 4-byte source ledger index, unsigned BE integer
 5) 4-byte arbitrary source tag, unsigned BE integer
 6) 33-byte source public key
-7) 3-byte padding (must be zero on send, ignore on receive)
-8) 72-byte prefix 0x54584E00 signature of 76-byte contents of fields 1-6 
+8) 72-byte prefix 0x54584E00 signature of 73-byte contents of fields 1-6 
 
-The transaction ID is the first 256-bits of the SHA512 hash of the 148 byte
+The transaction ID is the first 256-bits of the SHA512 hash of the 145 byte
 signed transaction.
 
 3) Transaction (ledger format)

Ledger.cpp

@@ -11,14 +11,14 @@
 using namespace boost;
 using namespace std;
 
-Ledger::Ledger(uint32 index) : mFeeHeld(0), mTimeStamp(0), mLedgerSeq(index)
+Ledger::Ledger(uint32 index) : mFeeHeld(0), mTimeStamp(0), mLedgerSeq(index), mCurrent(true)
 {
 }
 
 Ledger::Ledger(const uint256 &parentHash, const uint256 &transHash, const uint256 &accountHash,
 	uint64 feeHeld, uint64 timeStamp, uint32 ledgerSeq)
 		: mParentHash(parentHash), mTransHash(transHash), mAccountHash(accountHash),
-		mFeeHeld(feeHeld), mTimeStamp(timeStamp), mLedgerSeq(ledgerSeq)
+		mFeeHeld(feeHeld), mTimeStamp(timeStamp), mLedgerSeq(ledgerSeq), mCurrent(false)
 {
 	updateHash();
 }
@@ -40,8 +40,83 @@ void Ledger::addRaw(Serializer &s)
 	s.add64(mTimeStamp);
 }
 
-Ledger::TransResult Ledger::applyTransaction(TransactionPtr &trans)
+AccountState::pointer Ledger::getAccountState(const uint160& accountID)
 {
+	ScopedLock l(mTransactionMap->Lock());
+	SHAMapItem::pointer item=mTransactionMap->getItem(uint160to256(accountID));
+	if(item==NULL) return AccountState::pointer();
+	return AccountState::pointer(new AccountState(item->getData()));
+}
+
+Transaction::pointer Ledger::getTransaction(const uint256& transID)
+{
+	ScopedLock l(mTransactionMap->Lock());
+	SHAMapItem::pointer item=mTransactionMap->getItem(transID);
+	if(item==NULL) return Transaction::pointer();
+	Transaction *t=new Transaction(item->getData(), true);
+	if(t->getStatus()==NEW) t->setStatus(mCurrent ? INCLUDED : COMMITTED, mLedgerSeq);
+	return Transaction::pointer(t);
+}
+
+Ledger::TransResult Ledger::applyTransaction(Transaction::pointer trans)
+{
+	ScopedLock l(mLock);
+	if(trans->getSourceLedger()<mLedgerSeq) return TR_BADLSEQ;
+	if(trans->getAmount()<trans->getFee()) return TR_TOOSMALL;
+	if((mTransactionMap==NULL) || (mAccountStateMap==NULL)) return TR_ERROR;
+	try
+	{
+		// already applied?
+		Transaction::pointer dupTrans=getTransaction(trans->getID());
+		if(dupTrans!=NULL) return TR_ALREADY;
+
+		// accounts exist?
+		AccountState::pointer fromAccount=getAccountState(trans->getFromAccount());
+		AccountState::pointer toAccount=getAccountState(trans->getToAccount());
+		if((fromAccount==NULL)||(toAccount==NULL)) return TR_BADACCT;
+
+		// pass sanity checks?
+		if(fromAccount->getBalance()<trans->getAmount()) return TR_INSUFF;
+		if(fromAccount->getSeq()>trans->getFromAccountSeq()) return TR_PASTASEQ;
+		if(fromAccount->getSeq()<trans->getFromAccountSeq()) return TR_PREASEQ;
+
+		// apply
+		fromAccount->charge(trans->getAmount());
+		fromAccount->incSeq();
+		toAccount->credit(trans->getAmount()-trans->getFee());
+		mFeeHeld+=trans->getFee();
+		trans->setStatus(INCLUDED, mLedgerSeq);
+
+		updateAccountState(fromAccount);
+		updateAccountState(toAccount);
+		addTransaction(trans);
+
+		return TR_SUCCESS;
+	}
+	catch (SHAMapException)
+	{
+		return TR_ERROR;
+	}
+}
+
+Ledger::TransResult Ledger::removeTransaction(Transaction::pointer trans)
+{
+}
+
+Ledger::TransResult Ledger::hasTransaction(Transaction::pointer trans)
+{
+	ScopedLock l(mLock);
+	if(mTransactionMap==NULL) return TR_ERROR;
+	try
+	{
+		Transaction::pointer t=getTransaction(trans->getID());
+		if(t==NULL) return TR_NOTFOUND;
+		return TR_SUCCESS;
+	}
+	catch (SHAMapException)
+	{
+		return TR_ERROR;
+	}
 }
 
 #if 0
@@ -86,7 +161,7 @@ void Ledger::setTo(newcoin::FullLedger& ledger)
 	for(int n=0; n<numTrans; n++)
 	{
 		const newcoin::Transaction& trans=ledger.transactions(n);
-		mTransactions.push_back(TransactionPtr(new newcoin::Transaction(trans)));
+		mTransactions.push_back(Transaction::pointer(new newcoin::Transaction(trans)));
 	}
 }
 
@@ -134,7 +209,7 @@ bool Ledger::load(const uint256& hash)
 				unsigned char tbuf[1000];
 				while(db->getNextRow())
 				{
-					TransactionPtr trans=TransactionPtr(new newcoin::Transaction());
+					Transaction::pointer trans=Transaction::pointer(new newcoin::Transaction());
 					trans->set_amount( db->getBigInt("Amount"));
 					trans->set_seqnum( db->getInt("seqnum"));
 					trans->set_ledgerindex( db->getInt("ledgerIndex"));
@@ -262,7 +337,7 @@ uint64 Ledger::getAmount(std::string address)
 }*/
 
 // returns true if the from account has enough for the transaction and seq num is correct
-bool Ledger::addTransaction(TransactionPtr trans,bool checkDuplicate)
+bool Ledger::addTransaction(Transaction::pointer trans,bool checkDuplicate)
 {
 	if(checkDuplicate && hasTransaction(trans)) return(false);
 
@@ -316,7 +391,7 @@ bool Ledger::addTransaction(TransactionPtr trans,bool checkDuplicate)
 }
 
 // Don't check the amounts. We will do this at the end.
-void Ledger::addTransactionAllowNeg(TransactionPtr trans)
+void Ledger::addTransactionAllowNeg(Transaction::pointer trans)
 {
 	uint160 fromAddress=protobufTo160(trans->from());
 
@@ -376,8 +451,8 @@ void Ledger::recalculate(bool recursive)
 
 		mAccounts.clear();
 		mAccounts=mParent->getAccounts();
-		list<TransactionPtr> firstTransactions=mTransactions;
-		list<TransactionPtr> secondTransactions=mDiscardedTransactions;
+		list<Transaction::pointer> firstTransactions=mTransactions;
+		list<Transaction::pointer> secondTransactions=mDiscardedTransactions;
 
 		mTransactions.clear();
 		mDiscardedTransactions.clear();
@@ -386,12 +461,12 @@ void Ledger::recalculate(bool recursive)
 		secondTransactions.sort(gTransactionSorter);
 
 		// don't check balances until the end
-		BOOST_FOREACH(TransactionPtr trans,firstTransactions)
+		BOOST_FOREACH(Transaction::pointer trans,firstTransactions)
 		{
 			addTransactionAllowNeg(trans);
 		}
 
-		BOOST_FOREACH(TransactionPtr trans,secondTransactions)
+		BOOST_FOREACH(Transaction::pointer trans,secondTransactions)
 		{
 			addTransactionAllowNeg(trans);
 		}
@@ -408,7 +483,7 @@ void Ledger::recalculate(bool recursive)
 
 
 
-void Ledger::parentAddedTransaction(TransactionPtr cause)
+void Ledger::parentAddedTransaction(Transaction::pointer cause)
 {
 	// TODO: optimize we can make this more efficient at some point. For now just redo everything
 
@@ -452,18 +527,18 @@ void Ledger::parentAddedTransaction(TransactionPtr cause)
 	}
 	
 	// look for discarded transactions
-	BOOST_FOREACH(TransactionPtr trans,)
+	BOOST_FOREACH(Transaction::pointer trans,)
 	*/
 }
 
-bool Ledger::hasTransaction(TransactionPtr needle)
+bool Ledger::hasTransaction(Transaction::pointer needle)
 {
-	BOOST_FOREACH(TransactionPtr trans,mTransactions)
+	BOOST_FOREACH(Transaction::pointer trans,mTransactions)
 	{
 		if( Transaction::isEqual(needle,trans) ) return(true);
 	}
 
-	BOOST_FOREACH(TransactionPtr disTrans,mDiscardedTransactions)
+	BOOST_FOREACH(Transaction::pointer disTrans,mDiscardedTransactions)
 	{
 		if( Transaction::isEqual(needle,disTrans) ) return(true);
 	}
@@ -489,8 +564,8 @@ bool Ledger::isCompatible(Ledger::pointer other)
 
 void Ledger::mergeIn(Ledger::pointer other)
 {
-	list<TransactionPtr>& otherTransactions=other->getTransactions();
-	BOOST_FOREACH(TransactionPtr trans,otherTransactions)
+	list<Transaction::pointer>& otherTransactions=other->getTransactions();
+	BOOST_FOREACH(Transaction::pointer trans,otherTransactions)
 	{
 		addTransactionAllowNeg(trans);
 	}
@@ -516,9 +591,9 @@ void Ledger::correctAccount(const uint160& address)
 	list<uint160> effected;
 
 	// do this in reverse so we take of the higher seqnum first
-	for( list<TransactionPtr>::reverse_iterator iter=mTransactions.rbegin(); iter != mTransactions.rend(); )
+	for( list<Transaction::pointer>::reverse_iterator iter=mTransactions.rbegin(); iter != mTransactions.rend(); )
 	{
-		TransactionPtr trans= *iter;
+		Transaction::pointer trans= *iter;
 		if(protobufTo160(trans->from()) == address)
 		{
 			Account fromAccount=mAccounts[address];
@@ -536,10 +611,10 @@ void Ledger::correctAccount(const uint160& address)
 				mAccounts[destAddress]=destAccount;
 				if(destAccount.first<0) effected.push_back(destAddress);
 
-				list<TransactionPtr>::iterator temp=mTransactions.erase( --iter.base() );
+				list<Transaction::pointer>::iterator temp=mTransactions.erase( --iter.base() );
 				if(fromAccount.first>=0) break; 
 
-				iter=list<TransactionPtr>::reverse_iterator(temp);
+				iter=list<Transaction::pointer>::reverse_iterator(temp);
 			}else break;	
 		}else iter--;
 	}

Ledger.h

@@ -17,37 +17,58 @@
 
 class Ledger : public boost::enable_shared_from_this<Ledger>
 { // The basic Ledger structure, can be opened, closed, or synching
+public:
+
+	typedef boost::shared_ptr<Ledger> pointer;
+
 	enum TransResult
 	{
 		TR_ERROR	=-1,
 		TR_SUCCESS	=0,
 		TR_NOTFOUND	=1,
-		TR_ALREADY	=2
+		TR_ALREADY	=2,
+		TR_BADTRANS =3,	// the transaction itself is corrupt
+		TR_BADACCT	=4,	// one of the accounts is invalid
+		TR_INSUFF	=5,	// the sending account is broke
+		TR_PASTASEQ	=6,	// account is past this transaction
+		TR_PREASEQ	=7,	// account is missing transactions before this
+		TR_BADLSEQ	=8,	// ledger too early
+		TR_TOOSMALL =9, // amount is less than Tx fee
 	};
 
-public:
-	typedef boost::shared_ptr<Ledger> pointer;
 
 private:
 	uint256 mHash, mParentHash, mTransHash, mAccountHash;
 	uint64 mFeeHeld, mTimeStamp;
 	uint32 mLedgerSeq;
+	bool mCurrent;
 	
 	SHAMap::pointer mTransactionMap, mAccountStateMap;
 
+	mutable boost::recursive_mutex mLock;
+	
 protected:
 	void updateHash();
 
+	bool addAccountState(AccountState::pointer);
+	bool updateAccountState(AccountState::pointer);
+	bool addTransaction(Transaction::pointer);
+	bool delTransaction(const uint256& id);
+
 public:
 	Ledger(uint32 index); // used for the starting bootstrap ledger
 	Ledger(const Ledger &ledger);
 	Ledger(const uint256 &parentHash, const uint256 &transHash, const uint256 &accountHash,
 	 uint64 feeHeld, uint64 timeStamp, uint32 ledgerSeq); // used for received ledgers
 
+	void setCurrent(void) { mCurrent=true; }
+	void clearCurrent(void) { mCurrent=false; }
+	bool isCurrent(void) { return mCurrent; }
+
 	// ledger signature operations
 	void addRaw(Serializer &s);
 
-	virtual uint256 getHash() const;
+	uint256 getHash() const;
 	const uint256& getParentHash() const { return mParentHash; }
 	const uint256& getTransHash() const { return mTransHash; }
 	const uint256& getAccountHash() const { return mAccountHash; }
@@ -55,15 +76,21 @@ public:
 	uint64 getTimeStamp() const { return mTimeStamp; }
 	uint32 getLedgerSeq() const { return mLedgerSeq; }
 
+	// low level functions
 	SHAMap::pointer getTransactionMap() { return mTransactionMap; }
 	SHAMap::pointer getAccountStateMap() { return mAccountStateMap; }
 
-	TransResult applyTransaction(TransactionPtr& trans);
-	TransResult removeTransaction(TransactionPtr& trans);
-	TransResult hasTransaction(TransactionPtr& trans);
+	// mid level functions
+	AccountState::pointer getAccountState(const uint160& acctID);
+	Transaction::pointer getTransaction(const uint256& transID);
+
+	// high level functions
+	TransResult applyTransaction(Transaction::pointer trans);
+	TransResult removeTransaction(Transaction::pointer trans);
+	TransResult hasTransaction(Transaction::pointer trans);
 
 	bool closeLedger();
-	bool isCompatible(Ledger::pointer other);
+	bool isCompatible(boost::shared_ptr<Ledger> other);
 	bool signLedger(std::vector<unsigned char> &signature, const LocalHanko &hanko, int32 confidence);
 };
 

SHAMap.h

@@ -19,6 +19,10 @@ class SHAMap;
 
 class SHAMapNode
 { // Identifies a node in a SHA256 hash
+public:
+	typedef boost::shared_ptr<SHAMapNode> pointer;
+
+
 private:
 	static uint256 smMasks[11]; // AND with hash to get node id
 
@@ -59,7 +63,7 @@ public:
 };
 
 
-class SHAMapItem : public boost::enable_shared_from_this<SHAMapItem>
+class SHAMapItem
 { // an item stored in a SHAMap
 public:
 	typedef boost::shared_ptr<SHAMapItem> pointer;
@@ -98,7 +102,6 @@ public:
 	virtual void dump(void);
 };
 
-
 class SHAMapLeafNode : public SHAMapNode
 {
 	friend class SHAMap;
@@ -166,6 +169,12 @@ public:
 	virtual void dump(void);
 };
 
+enum SHAMapException
+{
+	MissingNode=1,
+	InvalidNode=2
+};
+
 
 class SHAMap
 {

Transaction.cpp

@@ -11,65 +11,83 @@ Transaction::Transaction() : mTransactionID(0), mAccountFrom(0), mAccountTo(0),
 {
 }
 
-Transaction::Transaction(TransStatus status, LocalAccount& fromLocalAccount, Account& fromAccount,
-		uint32 fromSeq,	const uint160& toAccount, uint64 amount, uint32 ident, uint32 ledger) :
+Transaction::Transaction(TransStatus status, LocalAccount& fromLocalAccount, uint32 fromSeq,
+		const uint160& toAccount, uint64 amount, uint32 ident, uint32 ledger) :
 			mAccountTo(toAccount), mAmount(amount), mFromAccountSeq(fromSeq), mSourceLedger(ledger),
 			mIdent(ident), mInLedger(0), mStatus(NEW)
 {
-	assert(fromAccount.getAddress()==fromLocalAccount.mAddress);
 	assert(fromLocalAccount.mAmount>=amount);
-	assert((fromSeq+1)==fromLocalAccount.mSeqNum);
-
-	mAccountFrom=fromAccount.getAddress();
+	mAccountFrom=fromLocalAccount.getAddress();
+	updateFee();
+	mFromPubKey.SetPubKey(fromLocalAccount.peekPubKey().GetPubKey());
 	sign(fromLocalAccount);
 }
 
+Transaction::Transaction(const std::vector<unsigned char> &t, bool validate) : mStatus(INVALID)
+{
+	Serializer s(t);
+	if(s.getLength()<145) return;
+	if(!s.get160(mAccountTo, 0)) return;
+	if(!s.get64(mAmount, 20)) return;
+	if(!s.get32(mFromAccountSeq, 28)) return;
+	if(!s.get32(mSourceLedger, 32)) return;
+	if(!s.get32(mIdent, 36)) return;
+	if(!s.getRaw(mSignature, 69, 72)) return;
+
+	std::vector<unsigned char> pubKey;
+	if(!s.getRaw(pubKey, 40, 33)) return;
+	if(!mFromPubKey.SetPubKey(pubKey)) return;
+	updateID();
+
+	if(validate && !checkSign()) return;
+
+	mStatus=NEW;
+}
+
 bool Transaction::sign(LocalAccount& fromLocalAccount)
 {
 	if( (mAmount==0) || (mSourceLedger==0) || (mAccountTo==0) )
 		return false;
-	if(mpAccountFrom == Account::pointer())
+	if(mAccountFrom!=fromLocalAccount.mAddress)
 		return false;
-	if((mpAccountFrom->getAddress()!=fromLocalAccount.mAddress) || (mAccountFrom!=mpAccountFrom->getAddress()))
-		return false;
-	
-	Serializer::pointer signBuf(getRawUnsigned());
+	Serializer::pointer signBuf=getRaw(true);
 	if(!signBuf->makeSignature(mSignature, fromLocalAccount.peekPrivKey()))
 	    return false;
-    signBuf->addRaw(mSignature);
-    mTransactionID=signBuf->getSHA512Half();
+	updateID();
+	return true;
+}
+
+void Transaction::updateFee()
+{ // for now, all transactions have a 1,000 unit fee
+	mFee=1000;
 }
 
 bool Transaction::checkSign() const
 {
-	if(mpAccountFrom == Account::pointer()) return false;
-	if(mpAccountFrom->getAddress()!=mAccountFrom) return false;
-
-	Serializer::pointer toSign(getRawUnsigned());
-	return toSign->checkSignature(mSignature, mpAccountFrom->peekPubKey());
+	return mFromPubKey.Verify(getRaw(true)->getSHA512Half(), mSignature);
 }
 
-Serializer::pointer Transaction::getRawUnsigned() const
+Serializer::pointer Transaction::getRaw(bool prefix) const
 {
-	Serializer::pointer ret(new Serializer(104));
-	ret->add32(0x54584e00u);
-	ret->addRaw(mpAccountFrom->peekPubKey().GetPubKey());
+	Serializer::pointer ret(new Serializer(77));
+	if(prefix) ret->add32(0x54584e00u);
+	ret->addRaw(mFromPubKey.GetPubKey());
 	ret->add64(mAmount);
 	ret->add32(mFromAccountSeq);
 	ret->add32(mInLedger);
 	ret->add32(mIdent);
+	assert( (prefix&&(ret->getLength()==77)) || (!prefix&&(ret->getLength()==73)) );
 	return ret;
 }
 
-Serializer::pointer Transaction::getRawSigned() const
+Serializer::pointer Transaction::getSigned() const
 {
-	Serializer::pointer ret(getRawUnsigned());
+	Serializer::pointer ret(getRaw(false));
 	ret->addRaw(mSignature);
 	return ret;
 }
 
 void Transaction::updateID()
 {
-	if( (mpAccountFrom!=Account::pointer()) && (mpAccountFrom->getAddress()==mAccountFrom))
-		mTransactionID=getRawSigned()->getSHA512Half();
+	mTransactionID=getSigned()->getSHA512Half();
 }

Transaction.h

@@ -5,6 +5,7 @@
 #include <boost/enable_shared_from_this.hpp>
 #include <boost/cstdint.hpp>
 
+#include "key.h"
 #include "uint256.h"
 #include "newcoin.pb.h"
 #include "Hanko.h"
@@ -31,40 +32,42 @@ class LocalAccount;
 class Transaction : public boost::enable_shared_from_this<Transaction>
 {
 public:
+
+	typedef boost::shared_ptr<Transaction> pointer;
+
 	static const uint32 TransSignMagic=0x54584E00; // "TXN"
 
 private:
 	uint256		mTransactionID;
 	uint160		mAccountFrom, mAccountTo;
-	uint64		mAmount;
+	uint64		mAmount, mFee;
 	uint32		mFromAccountSeq, mSourceLedger, mIdent;
+	CKey		mFromPubKey;
 	std::vector<unsigned char> mSignature;
 
 	uint32		mInLedger;
 	TransStatus	mStatus;
 
-	Account::pointer 	mpAccountFrom;
 
 public:
 	Transaction();
-	Transaction(const std::vector<unsigned char> rawTransaction);
-	Transaction(const std::string sqlReply);
-	Transaction(TransStatus Status, LocalAccount& fromLocal, Account& from,
-		uint32 fromSeq, const uint160& to, uint64 amount, uint32 ident, uint32 ledger);
-
-	void setFromAccountPointer(Account::pointer af) { mpAccountFrom=af; }
+	Transaction(const std::vector<unsigned char>& rawTransaction, bool validate);
+	Transaction(TransStatus Status, LocalAccount& fromLocal, uint32 fromSeq, const uint160& to, uint64 amount,
+		uint32 ident, uint32 ledger);
 
 	bool sign(LocalAccount& fromLocalAccount);
 	bool checkSign() const;
 	void updateID();
+	void updateFee();
 
-	Serializer::pointer getRawUnsigned() const;
-	Serializer::pointer getRawSigned() const;
+	Serializer::pointer getRaw(bool prefix) const;
+	Serializer::pointer getSigned() const;
 
 	const uint256& getID() const { return mTransactionID; }
 	const uint160& getFromAccount() const { return mAccountFrom; }
 	const uint160& getToAccount() const { return mAccountTo; }
 	uint64 getAmount() const { return mAmount; }
+	uint64 getFee() const { return mFee; }
 	uint32 getFromAccountSeq() const { return mFromAccountSeq; }
 	uint32 getSourceLedger() const { return mSourceLedger; }
 	uint32 getIdent() const { return mIdent; }
@@ -72,8 +75,7 @@ public:
 	uint32 getLedger() const { return mInLedger; }
 	TransStatus getStatus() const { return mStatus; }
 
-	void setStatus(TransStatus st);	
-	void setLedger(uint32 Ledger);
+	void setStatus(TransStatus status, uint32 ledgerSeq);
 
 	bool operator<(const Transaction &) const;
 	bool operator>(const Transaction &) const;
@@ -83,6 +85,4 @@ public:
 	bool operator>=(const Transaction &) const;
 };
 
-typedef boost::shared_ptr<Transaction> TransactionPtr;
-
 #endif

Wallet.h

@@ -27,6 +27,9 @@ public:
 	bool signRaw(Serializer::pointer, std::vector<unsigned char>& signature);
 	bool checkSignRaw(Serializer::pointer, int signaturePosition=-1, int signedData=-1);
 	CKey& peekPrivKey() { return mPrivateKey; }
+	CKey& peekPubKey() { return mPublicKey; }
+
+	const uint160& getAddress(void) const { return mAddress; }
 };
 
 class Wallet : public CBasicKeyStore
@@ -35,8 +38,8 @@ class Wallet : public CBasicKeyStore
 
 	
 
-	TransactionPtr createTransaction(LocalAccount& fromAccount, uint160& destAddr, int64 amount);
-	bool commitTransaction(TransactionPtr trans);
+	Transaction::pointer createTransaction(LocalAccount& fromAccount, uint160& destAddr, int64 amount);
+	bool commitTransaction(Transaction::pointer trans);
 
 	LocalAccount* consolidateAccountOfSize(int64 amount);
 
@@ -51,7 +54,7 @@ public:
 	std::string sendMoneyToAddress(uint160& destAddress, int64 amount);
 
 	// you may need to update your balances
-	void transactionChanged(TransactionPtr trans);
+	void transactionChanged(Transaction::pointer trans);
 
 };
 

key.h

@@ -17,24 +17,10 @@
 #include "uint256.h"
 #include "base58.h"
 
-// secp160k1
-// const unsigned int PRIVATE_KEY_SIZE = 192;
-// const unsigned int PUBLIC_KEY_SIZE  = 41;
-// const unsigned int SIGNATURE_SIZE   = 48;
-//
-// secp192k1
-// const unsigned int PRIVATE_KEY_SIZE = 222;
-// const unsigned int PUBLIC_KEY_SIZE  = 49;
-// const unsigned int SIGNATURE_SIZE   = 57;
-//
-// secp224k1
-// const unsigned int PRIVATE_KEY_SIZE = 250;
-// const unsigned int PUBLIC_KEY_SIZE  = 57;
-// const unsigned int SIGNATURE_SIZE   = 66;
-//
 // secp256k1:
 // const unsigned int PRIVATE_KEY_SIZE = 279;
-// const unsigned int PUBLIC_KEY_SIZE  = 65;
+// const unsigned int PUBLIC_KEY_SIZE  = 65; // but we don't use full keys
+// const unsigned int COMPUB_KEY_SIZE  = 33;
 // const unsigned int SIGNATURE_SIZE   = 72;
 //
 // see www.keylength.com
@@ -61,6 +47,7 @@ int static inline EC_KEY_regenerate_key(EC_KEY *eckey, BIGNUM *priv_key)
     if (!EC_POINT_mul(group, pub_key, priv_key, NULL, NULL, ctx))
         goto err;
 
+	EC_KEY_set_conv_form(eckey,POINT_CONVERSION_COMPRESSED);
     EC_KEY_set_private_key(eckey,priv_key);
     EC_KEY_set_public_key(eckey,pub_key);
 
@@ -100,6 +87,7 @@ public:
     CKey()
     {
         pkey = EC_KEY_new_by_curve_name(NID_secp256k1);
+		EC_KEY_set_conv_form(pkey,POINT_CONVERSION_COMPRESSED);
         if (pkey == NULL)
             throw key_error("CKey::CKey() : EC_KEY_new_by_curve_name failed");
         fSet = false;
@@ -108,6 +96,7 @@ public:
     CKey(const CKey& b)
     {
         pkey = EC_KEY_dup(b.pkey);
+		EC_KEY_set_conv_form(pkey,POINT_CONVERSION_COMPRESSED);
         if (pkey == NULL)
             throw key_error("CKey::CKey(const CKey&) : EC_KEY_dup failed");
         fSet = b.fSet;
@@ -135,6 +124,7 @@ public:
     {
         if (!EC_KEY_generate_key(pkey))
             throw key_error("CKey::MakeNewKey() : EC_KEY_generate_key failed");
+		EC_KEY_set_conv_form(pkey,POINT_CONVERSION_COMPRESSED);
         fSet = true;
     }
 
@@ -143,6 +133,7 @@ public:
         const unsigned char* pbegin = &vchPrivKey[0];
         if (!d2i_ECPrivateKey(&pkey, &pbegin, vchPrivKey.size()))
             return false;
+		EC_KEY_set_conv_form(pkey,POINT_CONVERSION_COMPRESSED);
         fSet = true;
         return true;
     }
@@ -161,6 +152,7 @@ public:
         if (!EC_KEY_regenerate_key(pkey,bn))
             throw key_error("CKey::SetSecret() : EC_KEY_regenerate_key failed");
         BN_clear_free(bn);
+		EC_KEY_set_conv_form(pkey,POINT_CONVERSION_COMPRESSED);
         fSet = true;
         return true;
     }
@@ -196,6 +188,7 @@ public:
         const unsigned char* pbegin = &vchPubKey[0];
         if (!o2i_ECPublicKey(&pkey, &pbegin, vchPubKey.size()))
             return false;
+		EC_KEY_set_conv_form(pkey,POINT_CONVERSION_COMPRESSED);
         fSet = true;
         return true;
     }
@@ -224,7 +217,7 @@ public:
         return true;
     }
 
-    bool Verify(uint256 hash, const std::vector<unsigned char>& vchSig)
+    bool Verify(uint256 hash, const std::vector<unsigned char>& vchSig) const
     {
         // -1 = error, 0 = bad sig, 1 = good
         if (ECDSA_verify(0, (unsigned char*)&hash, sizeof(hash), &vchSig[0], vchSig.size(), pkey) != 1)

uint256.h

@@ -2,8 +2,8 @@
 // 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_UINT256_H
-#define BITCOIN_UINT256_H
+#ifndef NEWCOIN_UINT256_H
+#define NEWCOIN_UINT256_H
 
 
 #include <limits.h>
@@ -584,6 +584,7 @@ public:
     }
 };
 
+
 inline bool operator==(const uint256& a, uint64 b)                           { return (base_uint256)a == b; }
 inline bool operator!=(const uint256& a, uint64 b)                           { return (base_uint256)a != b; }
 inline const uint256 operator<<(const base_uint256& a, unsigned int shift)   { return uint256(a) <<= shift; }
@@ -633,6 +634,19 @@ inline const uint256 operator|(const uint256& a, const uint256& b)      { return
 inline const uint256 operator+(const uint256& a, const uint256& b)      { return (base_uint256)a +  (base_uint256)b; }
 inline const uint256 operator-(const uint256& a, const uint256& b)      { return (base_uint256)a -  (base_uint256)b; }
 
+static uint256 uint160to256(const uint160& u)
+{
+ uint256 m;
+ memcpy(((char *) &m)+(sizeof(m)-sizeof(u)), &u, sizeof(u));
+ return m;
+}
+
+static uint160 uint256to160(const uint256& u)
+{
+ uint160 m;
+ memcpy((char *) &m, &u, sizeof(m));
+ return m;
+}