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Add encryption support to Newcoin address.

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This commit is contained in:
Arthur Britto
2012-05-10 15:49:46 -07:00
parent 15c940e036
commit 5097eab666
2 changed files with 83 additions and 8 deletions
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81
src/NewcoinAddress.cpp
View File

@@ -3,14 +3,14 @@
#include "Config.h"
#include "BitcoinUtil.h"
#include "rfc1751.h"
#include "utils.h"
#include "openssl/rand.h"
#include <cassert>
#include <algorithm>
#include <iostream>
#include <boost/format.hpp>
#include <boost/functional/hash.hpp>
#include <cassert>
#include <iostream>
#include <openssl/rand.h>
NewcoinAddress::NewcoinAddress()
{
@@ -272,7 +272,7 @@ void NewcoinAddress::setAccountPublic(const std::vector<unsigned char>& vPublic)
void NewcoinAddress::setAccountPublic(const NewcoinAddress& generator, int seq)
{
CKey pubkey = CKey(generator, seq);
CKey pubkey = CKey(generator, seq+1);
setAccountPublic(pubkey.GetPubKey());
}
@@ -281,14 +281,14 @@ void NewcoinAddress::setAccountPublic(const NewcoinAddress& generator, int seq)
// AccountPrivate
//
uint256 NewcoinAddress::getAccountPrivate() const
const std::vector<unsigned char>& NewcoinAddress::getAccountPrivate() const
{
switch (nVersion) {
case VER_NONE:
throw std::runtime_error("unset source");
case VER_ACCOUNT_PRIVATE:
return uint256(vchData);
return vchData;
default:
throw std::runtime_error(str(boost::format("bad source: %d") % int(nVersion)));
@@ -324,6 +324,73 @@ void NewcoinAddress::setAccountPrivate(uint256 hash256)
SetData(VER_ACCOUNT_PRIVATE, hash256.begin(), 32);
}
void NewcoinAddress::setAccountPrivate(const NewcoinAddress& generator, const NewcoinAddress& seed, int seq)
{
CKey privkey = CKey(generator, seed.getFamilyPrivateKey(), seq+1);
setAccountPrivate(privkey.GetPrivKey());
}
std::vector<unsigned char> NewcoinAddress::accountPrivateEncrypt(const NewcoinAddress& naPublicTo, const std::vector<unsigned char>& vucPlainText)
{
CKey ckPrivate;
CKey ckPublic;
std::vector<unsigned char> vucCipherText;
if (!ckPublic.SetPubKey(naPublicTo.getAccountPublic()))
{
// Bad public key.
std::cerr << "accountPrivateEncrypt: Bad public key." << std::endl;
}
else if (!ckPrivate.SetPrivKey(getAccountPrivate()))
{
// Bad private key.
std::cerr << "accountPrivateEncrypt: Bad private key." << std::endl;
}
else
{
try {
vucCipherText = ckPrivate.encryptECIES(ckPublic, vucPlainText);
}
catch (...)
{
nothing();
}
}
return vucCipherText;
}
std::vector<unsigned char> NewcoinAddress::accountPrivateDecrypt(const NewcoinAddress& naPublicFrom, const std::vector<unsigned char>& vucCipherText)
{
CKey ckPrivate;
CKey ckPublic;
std::vector<unsigned char> vucPlainText;
if (!ckPublic.SetPubKey(naPublicFrom.getAccountPublic()))
{
// Bad public key.
std::cerr << "accountPrivateDecrypt: Bad public key." << std::endl;
}
else if (!ckPrivate.SetPrivKey(getAccountPrivate()))
{
// Bad private key.
std::cerr << "accountPrivateDecrypt: Bad private key." << std::endl;
}
else
{
try {
vucPlainText = ckPrivate.decryptECIES(ckPublic, vucCipherText);
}
catch (...)
{
nothing();
}
}
return vucPlainText;
}
//
// Family Generators
//

10
src/NewcoinAddress.h
View File

@@ -78,16 +78,24 @@ public:
//
// Accounts Private
//
uint256 getAccountPrivate() const;
const std::vector<unsigned char>& getAccountPrivate() const;
std::string humanAccountPrivate() const;
bool setAccountPrivate(const std::string& strPrivate);
void setAccountPrivate(const std::vector<unsigned char>& vPrivate);
void setAccountPrivate(uint256 hash256);
void setAccountPrivate(const NewcoinAddress& generator, const NewcoinAddress& seed, int seq);
// Encrypt a message.
std::vector<unsigned char> accountPrivateEncrypt(const NewcoinAddress& naPublicTo, const std::vector<unsigned char>& vucPlainText);
// Decrypt a message.
std::vector<unsigned char> accountPrivateDecrypt(const NewcoinAddress& naPublicFrom, const std::vector<unsigned char>& vucCipherText);
//
// Family Generators
// Given a seed, hold a generator.
//
BIGNUM* getFamilyGeneratorBN() const;
const std::vector<unsigned char>& getFamilyGenerator() const;