diff options
author | Pieter Wuille <pieter.wuille@gmail.com> | 2017-09-19 18:12:25 -0700 |
---|---|---|
committer | Pieter Wuille <pieter.wuille@gmail.com> | 2018-02-19 18:55:21 -0800 |
commit | 119b0f85e2c8b9729228aad5d946144d57ad0f5b (patch) | |
tree | 995176b950d3a072f68e3f799d166362407c5c08 /src/base58.cpp | |
parent | ebfe217b15d21656a173e5c102f826d17c6c8be4 (diff) |
Split key_io (address/key encodings) off from base58
Diffstat (limited to 'src/base58.cpp')
-rw-r--r-- | src/base58.cpp | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/src/base58.cpp b/src/base58.cpp index b2c3161d14..982e123a1d 100644 --- a/src/base58.cpp +++ b/src/base58.cpp @@ -4,20 +4,12 @@ #include <base58.h> -#include <bech32.h> #include <hash.h> -#include <script/script.h> #include <uint256.h> -#include <utilstrencodings.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"; @@ -151,209 +143,3 @@ 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 WitnessV0KeyHash& id) const - { - std::vector<unsigned char> data = {0}; - ConvertBits<8, 5, true>(data, id.begin(), id.end()); - return bech32::Encode(m_params.Bech32HRP(), data); - } - - std::string operator()(const WitnessV0ScriptHash& id) const - { - std::vector<unsigned char> data = {0}; - ConvertBits<8, 5, true>(data, id.begin(), id.end()); - return bech32::Encode(m_params.Bech32HRP(), data); - } - - std::string operator()(const WitnessUnknown& id) const - { - if (id.version < 1 || id.version > 16 || id.length < 2 || id.length > 40) { - return {}; - } - std::vector<unsigned char> data = {(unsigned char)id.version}; - ConvertBits<8, 5, true>(data, id.program, id.program + id.length); - return bech32::Encode(m_params.Bech32HRP(), 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); - } - } - data.clear(); - auto bech = bech32::Decode(str); - if (bech.second.size() > 0 && bech.first == params.Bech32HRP()) { - // Bech32 decoding - int version = bech.second[0]; // The first 5 bit symbol is the witness version (0-16) - // The rest of the symbols are converted witness program bytes. - if (ConvertBits<5, 8, false>(data, bech.second.begin() + 1, bech.second.end())) { - if (version == 0) { - { - WitnessV0KeyHash keyid; - if (data.size() == keyid.size()) { - std::copy(data.begin(), data.end(), keyid.begin()); - return keyid; - } - } - { - WitnessV0ScriptHash scriptid; - if (data.size() == scriptid.size()) { - std::copy(data.begin(), data.end(), scriptid.begin()); - return scriptid; - } - } - return CNoDestination(); - } - if (version > 16 || data.size() < 2 || data.size() > 40) { - return CNoDestination(); - } - WitnessUnknown unk; - unk.version = version; - std::copy(data.begin(), data.end(), unk.program); - unk.length = data.size(); - return unk; - } - } - 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()); -} |