@mysten/sui/dist/esm/zklogin/utils.js

Sui TypeScript API(Work in Progress)

import { hexToBytes } from "@noble/hashes/utils";
import { poseidonHash } from "./poseidon.js";
const MAX_KEY_CLAIM_NAME_LENGTH = 32;
const MAX_KEY_CLAIM_VALUE_LENGTH = 115;
const MAX_AUD_VALUE_LENGTH = 145;
const PACK_WIDTH = 248;
function findFirstNonZeroIndex(bytes) {
  for (let i = 0; i < bytes.length; i++) {
    if (bytes[i] !== 0) {
      return i;
    }
  }
  return -1;
}
function toPaddedBigEndianBytes(num, width) {
  const hex = num.toString(16);
  return hexToBytes(hex.padStart(width * 2, "0").slice(-width * 2));
}
function toBigEndianBytes(num, width) {
  const bytes = toPaddedBigEndianBytes(num, width);
  const firstNonZeroIndex = findFirstNonZeroIndex(bytes);
  if (firstNonZeroIndex === -1) {
    return new Uint8Array([0]);
  }
  return bytes.slice(firstNonZeroIndex);
}
function getExtendedEphemeralPublicKey(publicKey) {
  return publicKey.toSuiPublicKey();
}
function chunkArray(array, chunk_size) {
  const chunks = Array(Math.ceil(array.length / chunk_size));
  const revArray = array.reverse();
  for (let i = 0; i < chunks.length; i++) {
    chunks[i] = revArray.slice(i * chunk_size, (i + 1) * chunk_size).reverse();
  }
  return chunks.reverse();
}
function bytesBEToBigInt(bytes) {
  const hex = bytes.map((b) => b.toString(16).padStart(2, "0")).join("");
  if (hex.length === 0) {
    return BigInt(0);
  }
  return BigInt("0x" + hex);
}
function hashASCIIStrToField(str, maxSize) {
  if (str.length > maxSize) {
    throw new Error(`String ${str} is longer than ${maxSize} chars`);
  }
  const strPadded = str.padEnd(maxSize, String.fromCharCode(0)).split("").map((c) => c.charCodeAt(0));
  const chunkSize = PACK_WIDTH / 8;
  const packed = chunkArray(strPadded, chunkSize).map((chunk) => bytesBEToBigInt(chunk));
  return poseidonHash(packed);
}
function genAddressSeed(salt, name, value, aud, max_name_length = MAX_KEY_CLAIM_NAME_LENGTH, max_value_length = MAX_KEY_CLAIM_VALUE_LENGTH, max_aud_length = MAX_AUD_VALUE_LENGTH) {
  return poseidonHash([
    hashASCIIStrToField(name, max_name_length),
    hashASCIIStrToField(value, max_value_length),
    hashASCIIStrToField(aud, max_aud_length),
    poseidonHash([BigInt(salt)])
  ]);
}
function normalizeZkLoginIssuer(iss) {
  if (iss === "accounts.google.com") {
    return "https://accounts.google.com";
  }
  return iss;
}
export {
  chunkArray,
  genAddressSeed,
  getExtendedEphemeralPublicKey,
  hashASCIIStrToField,
  normalizeZkLoginIssuer,
  toBigEndianBytes,
  toPaddedBigEndianBytes
};
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