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key_io.cpp
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key_io.cpp
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// Copyright (c) 2014-2019 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "key_io.h"
#include "base58.h"
#include "script/script.h"
#include <boost/variant/apply_visitor.hpp>
#include <boost/variant/static_visitor.hpp>
#include <assert.h>
#include <string.h>
#include <algorithm>
namespace
{
class DestinationEncoder : public boost::static_visitor<std::string>
{
private:
const CChainParams& m_params;
const CChainParams::Base58Type m_addrType;
public:
DestinationEncoder(const CChainParams& params, const CChainParams::Base58Type _addrType = CChainParams::PUBKEY_ADDRESS) : m_params(params), m_addrType(_addrType) {}
std::string operator()(const CKeyID& id) const
{
std::vector<unsigned char> data = m_params.Base58Prefix(m_addrType);
data.insert(data.end(), id.begin(), id.end());
return EncodeBase58Check(data);
}
std::string operator()(const CExchangeKeyID& id) const
{
std::vector<unsigned char> data = m_params.Base58Prefix(CChainParams::EXCHANGE_ADDRESS);
data.insert(data.end(), id.begin(), id.end());
return EncodeBase58Check(data);
}
std::string operator()(const CScriptID& id) const
{
std::vector<unsigned char> data = m_params.Base58Prefix(CChainParams::SCRIPT_ADDRESS);
data.insert(data.end(), id.begin(), id.end());
return EncodeBase58Check(data);
}
std::string operator()(const CNoDestination& no) const { return ""; }
};
CTxDestination DecodeDestination(const std::string& str, const CChainParams& params, bool& isStaking, bool& isExchange)
{
std::vector<unsigned char> data;
uint160 hash;
if (DecodeBase58Check(str, data, 23)) {
// base58-encoded PIVX addresses.
// Public-key-hash-addresses have version 30 (or 139 testnet).
// The data vector contains RIPEMD160(SHA256(pubkey)), where pubkey is the serialized public key.
const std::vector<unsigned char>& pubkey_prefix = params.Base58Prefix(CChainParams::PUBKEY_ADDRESS);
if (data.size() == hash.size() + pubkey_prefix.size() && std::equal(pubkey_prefix.begin(), pubkey_prefix.end(), data.begin())) {
std::copy(data.begin() + pubkey_prefix.size(), data.end(), hash.begin());
return CKeyID(hash);
}
// Exchange Transparent addresses have version 31
const std::vector<unsigned char>& exchange_pubkey_prefix = params.Base58Prefix(CChainParams::EXCHANGE_ADDRESS);
if (data.size() == hash.size() + exchange_pubkey_prefix.size() && std::equal(exchange_pubkey_prefix.begin(), exchange_pubkey_prefix.end(), data.begin())) {
isExchange = true;
std::copy(data.begin() + exchange_pubkey_prefix.size(), data.end(), hash.begin());
return CExchangeKeyID(hash);
}
// Public-key-hash-coldstaking-addresses have version 63 (or 73 testnet).
const std::vector<unsigned char>& staking_prefix = params.Base58Prefix(CChainParams::STAKING_ADDRESS);
if (data.size() == hash.size() + staking_prefix.size() && std::equal(staking_prefix.begin(), staking_prefix.end(), data.begin())) {
isStaking = true;
std::copy(data.begin() + staking_prefix.size(), data.end(), hash.begin());
return CKeyID(hash);
}
// Script-hash-addresses have version 13 (or 19 testnet).
// The data vector contains RIPEMD160(SHA256(cscript)), where cscript is the serialized redemption script.
const std::vector<unsigned char>& script_prefix = params.Base58Prefix(CChainParams::SCRIPT_ADDRESS);
if (data.size() == hash.size() + script_prefix.size() && std::equal(script_prefix.begin(), script_prefix.end(), data.begin())) {
std::copy(data.begin() + script_prefix.size(), data.end(), hash.begin());
return CScriptID(hash);
}
}
return CNoDestination();
}
} // anon namespace
std::string EncodeDestination(const CTxDestination& dest, bool isStaking, bool isExchange)
{
return isExchange ? EncodeDestination(dest, CChainParams::EXCHANGE_ADDRESS) : (isStaking ? EncodeDestination(dest, CChainParams::STAKING_ADDRESS) : EncodeDestination(dest, CChainParams::PUBKEY_ADDRESS));
}
std::string EncodeDestination(const CTxDestination& dest, const CChainParams::Base58Type addrType)
{
return boost::apply_visitor(DestinationEncoder(Params(), addrType), dest);
}
CTxDestination DecodeDestination(const std::string& str)
{
bool isStaking;
bool isExchange;
return DecodeDestination(str, Params(), isStaking, isExchange);
}
CTxDestination DecodeDestination(const std::string& str, bool& isStaking, bool& isExchange)
{
return DecodeDestination(str, Params(), isStaking, isExchange);
}
bool IsValidDestinationString(const std::string& str, bool fStaking, const CChainParams& params)
{
bool isStaking = false;
bool isExchange = false;
return IsValidDestination(DecodeDestination(str, params, isStaking, isExchange)) && (isStaking == fStaking);
}
bool IsValidDestinationString(const std::string& str, bool isStaking)
{
return IsValidDestinationString(str, isStaking, Params());
}
namespace KeyIO {
CKey DecodeSecret(const std::string &str) {
CKey key;
std::vector<unsigned char> data;
if (DecodeBase58Check(str, data, 34)) {
const std::vector<unsigned char> &privkey_prefix = Params().Base58Prefix(CChainParams::SECRET_KEY);
if ((data.size() == 32 + privkey_prefix.size() ||
(data.size() == 33 + privkey_prefix.size() && data.back() == 1)) &&
std::equal(privkey_prefix.begin(), privkey_prefix.end(), data.begin())) {
bool compressed = data.size() == 33 + privkey_prefix.size();
key.Set(data.begin() + privkey_prefix.size(), data.begin() + privkey_prefix.size() + 32, compressed);
}
}
if (!data.empty()) {
memory_cleanse(data.data(), data.size());
}
return key;
}
std::string EncodeSecret(const CKey &key) {
assert(key.IsValid());
std::vector<unsigned char> data = Params().Base58Prefix(CChainParams::SECRET_KEY);
data.insert(data.end(), key.begin(), key.end());
if (key.IsCompressed()) {
data.push_back(1);
}
std::string ret = EncodeBase58Check(data);
memory_cleanse(data.data(), data.size());
return ret;
}
CExtKey DecodeExtKey(const std::string &str) {
CExtKey key;
std::vector<unsigned char> data;
if (DecodeBase58Check(str, data, 78)) {
const std::vector<unsigned char> &prefix = Params().Base58Prefix(CChainParams::EXT_SECRET_KEY);
if (data.size() == BIP32_EXTKEY_SIZE + prefix.size() &&
std::equal(prefix.begin(), prefix.end(), data.begin())) {
key.Decode(data.data() + prefix.size());
}
}
return key;
}
std::string EncodeExtKey(const CExtKey &key) {
std::vector<unsigned char> data = Params().Base58Prefix(CChainParams::EXT_SECRET_KEY);
size_t size = data.size();
data.resize(size + BIP32_EXTKEY_SIZE);
key.Encode(data.data() + size);
std::string ret = EncodeBase58Check(data);
memory_cleanse(data.data(), data.size());
return ret;
}
CExtPubKey DecodeExtPubKey(const std::string& str)
{
CExtPubKey key;
std::vector<unsigned char> data;
if (DecodeBase58Check(str, data, 78)) {
const std::vector<unsigned char>& prefix = Params().Base58Prefix(CChainParams::EXT_PUBLIC_KEY);
if (data.size() == BIP32_EXTKEY_SIZE + prefix.size() && std::equal(prefix.begin(), prefix.end(), data.begin())) {
key.Decode(data.data() + prefix.size());
}
}
return key;
}
std::string EncodeExtPubKey(const CExtPubKey& key)
{
std::vector<unsigned char> data = Params().Base58Prefix(CChainParams::EXT_PUBLIC_KEY);
size_t size = data.size();
data.resize(size + BIP32_EXTKEY_SIZE);
key.Encode(data.data() + size);
std::string ret = EncodeBase58Check(data);
return ret;
}
}// namespace