Function ExpandHRP

src/bech32.cpp:309–321

Expand a HRP for use in checksum computation. */

/** Expand a HRP for use in checksum computation. */
data ExpandHRP(const std::string& hrp)
{
    data ret;
    ret.reserve(hrp.size() + 90);
    ret.resize(hrp.size() * 2 + 1);
    for (size_t i = 0; i < hrp.size(); ++i) {
        unsigned char c = hrp[i];
        ret[i] = c >> 5;
        ret[i + hrp.size() + 1] = c & 0x1f;
    }
    ret[hrp.size()] = 0;
    return ret;
}

/** Verify a checksum. */
Encoding VerifyChecksum(const std::string& hrp, const data& values)