HarmonyOS 如何使用公钥解密私钥加密，切换到代码中没法createVerify

function rsaKeyBase64(puk: string, prk: string) {
  // 创建一个AsyKeyGenerator实例
  let rsaGenerator = cryptoFramework.createAsyKeyGenerator('RSA2048');
  let base64 = new util.Base64Helper();
  if (puk != '' && prk != '') {
    let keyPair = rsaGenerator.convertKeySync({ data: base64.decodeSync(puk) }, { data: base64.decodeSync(prk) });
    return keyPair;
  } else if (prk) {
    let keyPair = rsaGenerator.convertKeySync(null, { data: base64.decodeSync(prk) });
    return keyPair;
  } else if (prk) {
    let keyPair = rsaGenerator.convertKeySync({ data: base64.decodeSync(puk) }, null);
    return keyPair;
  } else {
    let keyPair = rsaGenerator.generateKeyPairSync();
    return keyPair;
  }
}

//私钥加密
async function signMessagePromise(priKey: cryptoFramework.PriKey) {
  let signAlg = "RSA1024|PKCS1|NoHash|OnlySign";
  let signer = cryptoFramework.createSign(signAlg);
  await signer.init(priKey);
  let signData = await signer.sign({ data: RSAUtil.stringToUint8Array("私钥加密") });
  return signData;
}

// 公钥解密
async function verifyMessagePromise(signMessageBlob: cryptoFramework.DataBlob, pubKey: cryptoFramework.PubKey) {
  let verifyAlg = "RSA1024|PKCS1|NoHash|Recover";
  let verifier = cryptoFramework.createVerify(verifyAlg);
  await verifier.init(pubKey);
  let rawSignData = await verifier.recover(signMessageBlob);
  console.log("rsa puk data " + RSAUtil.uint8ArrayToString(rawSignData?.data))
  return rawSignData;
}