Java中通过证书公钥 进行RSA/None/PKCS1Padding加密，在HarmonyOS中有对应的方式吗

async function rsa() { 
 
  let Base64 = new util.Base64Helper() 
  let keyGenerator = cryptoFramework.createAsyKeyGenerator('RSA1024') 
  let a = Base64.decodeSync("MIGfMA0GCSqGSIb3DQEBAQUAxxxxDCBiQKBgQDbf3N5eW+PgmaLBvxxxMjdJW/eTxxx8Hrx/fUvPcgexxxx8czJkFy2/XtDfWxxxxcrPZTU/jGPPUIxxxbWM61UHsMvDFos8F/RJhnreYMLxxxxD8AC0UOs0UxGBtT0ByG874qM8nOanN2Homy/xxxx/xxxx/vWUQIDxxxxQAB") 
  let keyPair = await keyGenerator.convertKey({ data: a }, null) 
  let cipher = cryptoFramework.createCipher('RSA|PKCS1') 
  await cipher.init(cryptoFramework.CryptoMode.ENCRYPT_MODE, keyPair.pubKey, null) 
  let inputBlob: cryptoFramework.DataBlob = { data: stringToUint8Array("加密的信息") } 
  let blob = await cipher.doFinal(inputBlob) 
  return Base64.encodeToString(blob.data) 
 
} 
// 字符串转成字节流 
export function  stringToUint8Array(str: string) { 
  return new Uint8Array(buffer.from(str,'utf-8').buffer); 
}