@pharosnames/address-encoder/dist/esm/coin/ardr.js

Encodes and decodes address formats for various cryptocurrencies with Pharos network support

const name = "ardr";
const coinType = 16754;
const prefix = "ARDOR";
const alphabet = "23456789ABCDEFGHJKLMNPQRSTUVWXYZ";
const codewordMap = new Uint8Array([
    3, 2, 1, 0, 7, 6, 5, 4, 13, 14, 15, 16, 12, 8, 9, 10, 11,
]);
const glog = [
    0, 0, 1, 18, 2, 5, 19, 11, 3, 29, 6, 27, 20, 8, 12, 23, 4, 10, 30, 17, 7, 22,
    28, 26, 21, 25, 9, 16, 13, 14, 24, 15,
];
const gexp = [
    1, 2, 4, 8, 16, 5, 10, 20, 13, 26, 17, 7, 14, 28, 29, 31, 27, 19, 3, 6, 12,
    24, 21, 15, 30, 25, 23, 11, 22, 9, 18, 1,
];
const gmult = (a, b) => {
    if (a === 0 || b === 0)
        return 0;
    return gexp[(glog[a] + glog[b]) % 31];
};
const ardrChecksum = (source) => {
    let sum = 0;
    for (let i = 1; i < 5; i++) {
        let t = 0;
        for (let j = 0; j < 31; j++) {
            if (j > 12 && j < 27)
                continue;
            let pos = j;
            if (j > 26)
                pos -= 14;
            t ^= gmult(source[pos], gexp[(i * j) % 31]);
        }
        sum |= t;
    }
    return sum === 0;
};
export const encodeArdrAddress = (source) => {
    const chars = [];
    for (let i = 0, j = 0; i < source.length; i++) {
        const byte = source[i];
        const writeIndex = codewordMap[j++];
        chars[writeIndex] = alphabet[16 * ((byte & 0xf0) >> 4) + (byte & 0x0f)];
    }
    return `${prefix}-${chars.slice(0, 4).join("")}-${chars
        .slice(4, 8)
        .join("")}-${chars.slice(8, 12).join("")}-${chars.slice(12, 17).join("")}`;
};
export const decodeArdrAddress = (source) => {
    if (!source.startsWith(`${prefix}-`) || source.length !== 26)
        throw new Error("Unrecognised address format");
    const joined = source.slice(6);
    const codeword = new Uint8Array([
        1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    ]);
    let dashCount = 0;
    for (let i = 0, j = 0; i < 20; i++) {
        const char = joined[i];
        if (char === "-") {
            dashCount++;
            continue;
        }
        const pos = alphabet.indexOf(char);
        if (pos === -1)
            throw new Error("Unrecognised address format");
        const writeIndex = codewordMap[j++];
        codeword[writeIndex] = pos;
    }
    if (!ardrChecksum(codeword))
        throw new Error("Unrecognised address format");
    return codeword;
};
export const ardr = {
    name,
    coinType,
    encode: encodeArdrAddress,
    decode: decodeArdrAddress,
};
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