Function bech32_encode

common/bech32.c:58–92

};

int bech32_encode(char *output, const char *hrp, const uint8_t *data, size_t data_len, size_t max_output_len, bech32_encoding enc) {
    uint32_t chk = 1;
    size_t i = 0;
    while (hrp[i] != 0) {
        int ch = hrp[i];
        if (ch < 33 || ch > 126) {
            return 0;
        }

        if (ch >= 'A' && ch <= 'Z') return 0;
        chk = bech32_polymod_step(chk) ^ (ch >> 5);
        ++i;
    }
    if (i + 7 + data_len > max_output_len) return 0;
    chk = bech32_polymod_step(chk);
    while (*hrp != 0) {
        chk = bech32_polymod_step(chk) ^ (*hrp & 0x1f);
        *(output++) = *(hrp++);
    }
    *(output++) = '1';
    for (i = 0; i < data_len; ++i) {
        if (*data >> 5) return 0;
        chk = bech32_polymod_step(chk) ^ (*data);
        *(output++) = bech32_charset[*(data++)];
    }
    for (i = 0; i < 6; ++i) {
        chk = bech32_polymod_step(chk);
    }
    chk ^= bech32_final_constant(enc);
    for (i = 0; i < 6; ++i) {
        *(output++) = bech32_charset[(chk >> ((5 - i) * 5)) & 0x1f];
    }
    *output = 0;
    return 1;
}

bech32_encoding bech32_decode(char* hrp, uint8_t *data, size_t *data_len, const char *input, size_t max_input_len) {
    uint32_t chk = 1;