PhpSeclib <-> BouncyCastle RSA

Question

我使用phpseclib在服务器端生成了一对公钥/私钥，比如

include 'Crypt/RSA.php';
$rsa = new Crypt_RSA();
$rsa->setPrivateKeyFormat(CRYPT_RSA_PRIVATE_FORMAT_PKCS1);
$rsa->setPublicKeyFormat(CRYPT_RSA_PUBLIC_FORMAT_PKCS1);
extract($rsa->createKey());
echo $privatekey;
echo "\n\n\n";
echo $publickey;

现在，我希望使用Java Bouncy Castle引擎在客户端导入公钥。

这里是我的公钥

-----BEGIN PUBLIC KEY-----
MIGJAoGBAJEGAmaQejDgJaCg/B5+g68arqpMpl6jZ9+p8TBzNRIq+Ygt/n3iqz+pAtltrlRnmqSD
svx0LMluw1wXezQ1pz2tTJTEhg6b69Qui0o//W5UDfle4yOyAHaOs8MD5nubJjXFU8vGiEdektET
jgKqiSr5TBgZoHy+YDWpd4yTemXVAgMBAAE=
-----END PUBLIC KEY-----

但我能做到。我尝试了几种方法，但总是遇到错误。

AsymmetricKeyParameter publicKey = 
    (AsymmetricKeyParameter) PublicKeyFactory.createKey(b64.decodeBuffer(key));
AsymmetricKeyParameter publicKey = 
    (AsymmetricKeyParameter) PublicKeyFactory.createKey(key.getBytes())

也是

PEMReader pemReader = new org.bouncycastle.openssl.PEMReader (reader);
PemObject pem = pemReader.readPemObject();

所有这些方法都会产生错误。

如何使用Java Bouncy Castle engine导入公钥？

Answer 1

我找到了解决方案

    key = key.replaceAll("PUBLIC KEY", "RSA PUBLIC KEY");
    final Reader reader = new StringReader(key);
    PEMReader pemReader = new PEMReader(reader);
    Object obj = pemReader.readObject();
    pemReader.close();
    BCRSAPublicKey bcPublicKey = (BCRSAPublicKey) obj;

    AsymmetricKeyParameter publicKey = (AsymmetricKeyParameter) PublicKeyFactory.createKey(bcPublicKey.getEncoded());

    AsymmetricBlockCipher e = new RSAEngine();
    e = new org.bouncycastle.crypto.encodings.PKCS1Encoding(e);
    e.init(true, publicKey);

    byte[] messageBytes = inputData.getBytes();
    encryptedData = e.processBlock(messageBytes, 0, messageBytes.length);

现在我可以在Java端加密，在服务器(PHP)端解密

Answer 2

使用最新的Git版本的phpseclib可能值得一试。引用半最近的提交：

https://github.com/phpseclib/phpseclib/commit/2f8d1055ea5a6b06cd7a40eb85661ba688a31320

引用它的话说，提交“使Crypt的公钥与OpenSSL兼容”。