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Split key_io (address/key encodings) off from base58

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This commit is contained in:
Pieter Wuille
2017-09-19 18:12:25 -07:00
committed by Jack Grigg
parent 3e60c9fabd
commit 3d31e09cbb
20 changed files with 315 additions and 292 deletions
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249
src/base58.cpp
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@@ -4,21 +4,12 @@
#include "base58.h"
#include "hash.h"
#include "script/script.h"
#include "uint256.h"
#include <hash.h>
#include <uint256.h>
#include "version.h"
#include "streams.h"
#include <boost/variant/apply_visitor.hpp>
#include <boost/variant/static_visitor.hpp>
#include <algorithm>
#include <assert.h>
#include <string.h>
/** All alphanumeric characters except for "0", "I", "O", and "l" */
static const char* pszBase58 = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
@@ -143,239 +134,3 @@ bool DecodeBase58Check(const std::string& str, std::vector<unsigned char>& vchRe
{
return DecodeBase58Check(str.c_str(), vchRet);
}
namespace
{
class DestinationEncoder : public boost::static_visitor<std::string>
{
private:
const CChainParams& m_params;
public:
DestinationEncoder(const CChainParams& params) : m_params(params) {}
std::string operator()(const CKeyID& id) const
{
std::vector<unsigned char> data = m_params.Base58Prefix(CChainParams::PUBKEY_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)
{
std::vector<unsigned char> data;
uint160 hash;
if (DecodeBase58Check(str, data)) {
// base58-encoded Bitcoin addresses.
// Public-key-hash-addresses have version 0 (or 111 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);
}
// Script-hash-addresses have version 5 (or 196 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();
}
} // namespace
CKey DecodeSecret(const std::string& str)
{
CKey key;
std::vector<unsigned char> data;
if (DecodeBase58Check(str, data)) {
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);
}
}
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;
}
CExtPubKey DecodeExtPubKey(const std::string& str)
{
CExtPubKey key;
std::vector<unsigned char> data;
if (DecodeBase58Check(str, data)) {
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;
}
CExtKey DecodeExtKey(const std::string& str)
{
CExtKey key;
std::vector<unsigned char> data;
if (DecodeBase58Check(str, data)) {
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;
}
std::string EncodeDestination(const CTxDestination& dest)
{
return boost::apply_visitor(DestinationEncoder(Params()), dest);
}
CTxDestination DecodeDestination(const std::string& str)
{
return DecodeDestination(str, Params());
}
bool IsValidDestinationString(const std::string& str, const CChainParams& params)
{
return IsValidDestination(DecodeDestination(str, params));
}
bool IsValidDestinationString(const std::string& str)
{
return IsValidDestinationString(str, Params());
}
std::string EncodePaymentAddress(const libzcash::PaymentAddress& zaddr)
{
CDataStream ss(SER_NETWORK, PROTOCOL_VERSION);
ss << zaddr;
std::vector<unsigned char> data = Params().Base58Prefix(CChainParams::ZCPAYMENT_ADDRRESS);
data.insert(data.end(), ss.begin(), ss.end());
return EncodeBase58Check(data);
}
boost::optional<libzcash::PaymentAddress> DecodePaymentAddress(const std::string& str)
{
std::vector<unsigned char> data;
if (DecodeBase58Check(str, data)) {
const std::vector<unsigned char>& zaddr_prefix = Params().Base58Prefix(CChainParams::ZCPAYMENT_ADDRRESS);
if ((data.size() == libzcash::SerializedPaymentAddressSize + zaddr_prefix.size()) &&
std::equal(zaddr_prefix.begin(), zaddr_prefix.end(), data.begin())) {
CSerializeData serialized(data.begin() + zaddr_prefix.size(), data.end());
CDataStream ss(serialized, SER_NETWORK, PROTOCOL_VERSION);
libzcash::PaymentAddress ret;
ss >> ret;
return ret;
}
}
return boost::none;
}
std::string EncodeViewingKey(const libzcash::ViewingKey& vk)
{
CDataStream ss(SER_NETWORK, PROTOCOL_VERSION);
ss << vk;
std::vector<unsigned char> data = Params().Base58Prefix(CChainParams::ZCVIEWING_KEY);
data.insert(data.end(), ss.begin(), ss.end());
std::string ret = EncodeBase58Check(data);
memory_cleanse(data.data(), data.size());
return ret;
}
boost::optional<libzcash::ViewingKey> DecodeViewingKey(const std::string& str)
{
std::vector<unsigned char> data;
if (DecodeBase58Check(str, data)) {
const std::vector<unsigned char>& vk_prefix = Params().Base58Prefix(CChainParams::ZCVIEWING_KEY);
if ((data.size() == libzcash::SerializedViewingKeySize + vk_prefix.size()) &&
std::equal(vk_prefix.begin(), vk_prefix.end(), data.begin())) {
CSerializeData serialized(data.begin() + vk_prefix.size(), data.end());
CDataStream ss(serialized, SER_NETWORK, PROTOCOL_VERSION);
libzcash::ViewingKey ret;
ss >> ret;
memory_cleanse(serialized.data(), serialized.size());
memory_cleanse(data.data(), data.size());
return ret;
}
}
memory_cleanse(data.data(), data.size());
return boost::none;
}
std::string EncodeSpendingKey(const libzcash::SpendingKey& zkey)
{
CDataStream ss(SER_NETWORK, PROTOCOL_VERSION);
ss << zkey;
std::vector<unsigned char> data = Params().Base58Prefix(CChainParams::ZCSPENDING_KEY);
data.insert(data.end(), ss.begin(), ss.end());
std::string ret = EncodeBase58Check(data);
memory_cleanse(data.data(), data.size());
return ret;
}
boost::optional<libzcash::SpendingKey> DecodeSpendingKey(const std::string& str)
{
std::vector<unsigned char> data;
if (DecodeBase58Check(str, data)) {
const std::vector<unsigned char>& zkey_prefix = Params().Base58Prefix(CChainParams::ZCSPENDING_KEY);
if ((data.size() == libzcash::SerializedSpendingKeySize + zkey_prefix.size()) &&
std::equal(zkey_prefix.begin(), zkey_prefix.end(), data.begin())) {
CSerializeData serialized(data.begin() + zkey_prefix.size(), data.end());
CDataStream ss(serialized, SER_NETWORK, PROTOCOL_VERSION);
libzcash::SpendingKey ret;
ss >> ret;
memory_cleanse(serialized.data(), serialized.size());
memory_cleanse(data.data(), data.size());
return ret;
}
}
memory_cleanse(data.data(), data.size());
return boost::none;
}