java将JDK8升级到OpenJKD 11:sun。安全rsa

Question

作为升级到openJDK 11的遗留应用程序的一部分，我很难重构依赖sun.security.*的代码位，因为编译失败：

  package sun.security.rsa is not visible
 (package sun.security.rsa is declared in module java.base, which does not export it to the unnamed module)

给出以下代码片段：

// Read private key which is BASE64 encoded
byte[] encodedKey = Base64.decode(config.getPrivateKey().getBytes());
PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(encodedKey);
KeyFactory kf = KeyFactory.getInstance("RSA");
PrivateKey privateKey = factory.generatePrivate(keySpec);

// Illegal Access To Internal APIs
RSAPrivateCrtKeyImpl rsaPrivateKey = (RSAPrivateCrtKeyImpl) privateKey;
PublicKey publicKey = kf.generatePublic(new RSAPublicKeySpec(rsaPrivateKey.getModulus(), rsaPrivateKey.getPublicExponent()));
...

有人知道我如何替换上面代码的最后两行，而不依赖sun.security.*的包吗RSAPrivateCrtKeyImpl正在openJDK11中使用内部api sun.security.*中断

Answer 1

您应该能够用它实现的接口替换Impl类；i、 e

RSAPrivateCrtKey rsaPrivateKey = (RSAPrivateCrtKey) privateKey;
PublicKey publicKey = kf.generatePublic(
        new RSAPublicKeySpec(rsaPrivateKey.getModulus(), 
                             rsaPrivateKey.getPublicExponent()));

因为getModulus()和getPublicExponent()都是在接口中声明的

值得一提的是，这段代码从一开始就不需要依赖内部实现类