static
std::string
decodeBase58Token (std::string const& s,
int type, InverseArray const& inv)
{
auto result = decodeBase58(s, inv);
if (result.empty())
return result;
// Reject zero length tokens
if (result.size() < 6)
return {};
if (result[0] != type)
return {};
std::array<char, 4> guard;
checksum(guard.data(),
result.data(), result.size() - 4);
if (std::memcmp(guard.data(),
result.data() +
result.size() - 4, 4) != 0)
return {};
result.resize(result.size() - 4);
// Erase the type byte
// VFALCO This might cause problems later
result.erase(result.begin());
return result;
}
bool bitcoinAsciiToAddress(const char *input,uint8_t output[25]) // convert an ASCII bitcoin address into binary.
{
bool ret = false;
uint32_t len = decodeBase58(input,output,25,true);
if ( len == 25 ) // the output must be *exactly* 25 bytes!
{
uint8_t checksum[32];
computeSHA256(output,21,checksum);
computeSHA256(checksum,32,checksum);
if ( output[21] == checksum[0] ||
output[22] == checksum[1] ||
output[23] == checksum[2] ||
output[24] == checksum[3] )
{
ret = true; // the cheksum matches!
}
}
return ret;
}
