如下分账i请求接口中敏感字段加密时如何设置和传入公钥参数？？

public static String rsaEncryptOAEP(String message, X509Certificate certificate)
2throws IllegalBlockSizeException, IOException {
3  try {
4    Cipher cipher = Cipher.getInstance("RSA/ECB/OAEPWithSHA-1AndMGF1Padding");
5    cipher.init(Cipher.ENCRYPT_MODE, certificate.getPublicKey());
6
7    byte[] data = message.getBytes("utf-8");
8    byte[] cipherdata = cipher.doFinal(data);
9    return Base64.getEncoder().encodeToString(cipherdata);
10  } catch (NoSuchAlgorithmException | NoSuchPaddingException e) {
11    throw new RuntimeException("当前Java环境不支持RSA v1.5/OAEP", e);
12  } catch (InvalidKeyException e) {
13    throw new IllegalArgumentException("无效的证书", e);
14  } catch (IllegalBlockSizeException | BadPaddingException e) {
15    throw new IllegalBlockSizeException("加密原串的长度不能超过214字节");
16  }
17}