HarmonyOS 鸿蒙Next Blowfish/ECB/NoPadding 加密方式怎么实现

项目中用到Blowfish加密方式，但官方api没找到相关介绍，网上也没找到有用的信息，下面是我写的加密代码，但运行报错：
报错行 let aesGenerator = cryptoFramework.createSymKeyGenerator(“Blowfish”)
求助啊，Blowfish加密需要怎么做？

encryptECB(content: string):string{

  //key
  // let symKey = this.genSymKeyByData()
  let key = “6a70394a700b4a73ab7a4afd718889e1”
  let symKeyBlob: cryptoFramework.DataBlob = { data : stringToUit8Array(key) };
  let aesGenerator = cryptoFramework.createSymKeyGenerator(“Blowfish”);
  // let aesGenerator = cryptoFramework.createSymKeyGenerator(‘AES’);
  let symKey = aesGenerator.convertKeySync(symKeyBlob);


  let cipher = cryptoFramework.createCipher(‘Blowfish/ECB/NoPadding’);
  let plainText: cryptoFramework.DataBlob = { data: stringToUit8Array(content) }
  cipher.initSync(cryptoFramework.CryptoMode.ENCRYPT_MODE, symKey, null);
  let cipherData = cipher.doFinalSync(plainText);
  return uint8ArrayToHexStr(cipherData.data)
}