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Implement Bech32m encoding/decoding

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This commit is contained in:
Pieter Wuille 2021-01-05 12:55:15 -08:00
parent 4ba1bab443
commit da2bb6976d
6 changed files with 82 additions and 58 deletions
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22
src/key_io.cpp
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@ -43,7 +43,7 @@ public:
std::vector<unsigned char> data = {0};
data.reserve(33);
ConvertBits<8, 5, true>([&](unsigned char c) { data.push_back(c); }, id.begin(), id.end());
return bech32::Encode(m_params.Bech32HRP(), data);
return bech32::Encode(bech32::Encoding::BECH32, m_params.Bech32HRP(), data);
}
std::string operator()(const WitnessV0ScriptHash& id) const
@ -51,7 +51,7 @@ public:
std::vector<unsigned char> data = {0};
data.reserve(53);
ConvertBits<8, 5, true>([&](unsigned char c) { data.push_back(c); }, id.begin(), id.end());
return bech32::Encode(m_params.Bech32HRP(), data);
return bech32::Encode(bech32::Encoding::BECH32, m_params.Bech32HRP(), data);
}
std::string operator()(const WitnessUnknown& id) const
@ -62,7 +62,7 @@ public:
std::vector<unsigned char> data = {(unsigned char)id.version};
data.reserve(1 + (id.length * 8 + 4) / 5);
ConvertBits<8, 5, true>([&](unsigned char c) { data.push_back(c); }, id.program, id.program + id.length);
return bech32::Encode(m_params.Bech32HRP(), data);
return bech32::Encode(bech32::Encoding::BECH32, m_params.Bech32HRP(), data);
}
std::string operator()(const CNoDestination& no) const { return {}; }
@ -95,20 +95,18 @@ CTxDestination DecodeDestination(const std::string& str, const CChainParams& par
error_str = "Invalid prefix for Base58-encoded address";
}
data.clear();
auto bech = bech32::Decode(str);
if (bech.second.size() > 0) {
const auto dec = bech32::Decode(str);
if (dec.encoding == bech32::Encoding::BECH32 && dec.data.size() > 0) {
// Bech32 decoding
error_str = "";
if (bech.first != params.Bech32HRP()) {
if (dec.hrp != params.Bech32HRP()) {
error_str = "Invalid prefix for Bech32 address";
return CNoDestination();
}
// Bech32 decoding
int version = bech.second[0]; // The first 5 bit symbol is the witness version (0-16)
int version = dec.data[0]; // The first 5 bit symbol is the witness version (0-16)
// The rest of the symbols are converted witness program bytes.
data.reserve(((bech.second.size() - 1) * 5) / 8);
if (ConvertBits<5, 8, false>([&](unsigned char c) { data.push_back(c); }, bech.second.begin() + 1, bech.second.end())) {
data.reserve(((dec.data.size() - 1) * 5) / 8);
if (ConvertBits<5, 8, false>([&](unsigned char c) { data.push_back(c); }, dec.data.begin() + 1, dec.data.end())) {
if (version == 0) {
{
WitnessV0KeyHash keyid;