如何从作为ByteString - OAEP填充接收的密钥创建java.security.publicKey

import java.security.KeyFactory;
import java.security.PublicKey;
import java.security.spec.KeySpec;
import java.security.spec.RSAPublicKeySpec;

// 假设接收到的密钥ByteString为receivedKey
ByteString receivedKey = ...;

// 将ByteString转换为字节数组
byte[] keyBytes = receivedKey.toByteArray();

// 创建KeyFactory对象
KeyFactory keyFactory = KeyFactory.getInstance("RSA");

// 创建RSAPublicKeySpec对象
KeySpec keySpec = new RSAPublicKeySpec(keyBytes);

// 生成PublicKey对象
PublicKey publicKey = keyFactory.generatePublic(keySpec);