HarmonyOS AES加密CBC模式中IV的实现，ArkTS和C++怎么对应上

function genIvParamsSpec() { 
  let arr = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]; // 16 bytes 
  let dataIv = new Uint8Array(arr); 
  let ivBlob: cryptoFramework.DataBlob = { data: dataIv }; 
  let ivParamsSpec: cryptoFramework.IvParamsSpec = { 
    algName: "IvParamsSpec", 
    iv: ivBlob 
  }; 
  return ivParamsSpec; 
} 
 
async function encryptMessagePromise(symKey: cryptoFramework.SymKey, plainText: cryptoFramework.DataBlob) { 
  let cipher = cryptoFramework.createCipher('AES128|CBC|PKCS7'); 
  let iv = genIvParamsSpec(); 
  await cipher.init(cryptoFramework.CryptoMode.ENCRYPT_MODE, symKey, iv); 
  let cipherData = await cipher.doFinal(plainText); 
  return cipherData; 
}