PhpSeclib<->弹力城堡RSA [英] PhpSeclib <-> BouncyCastle RSA

问题描述

我在服务器端使用phpseclib生成了一对公钥/私钥，

I generated on server side a pair public/private keys using phpseclib like

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;

现在我想在客户端使用Java Bouncy Castle引擎导入公钥。

这里是我的公钥

Now I want import on client side Public key using Java Bouncy Castle engine.
Here my Public key

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

但是我可以做到。我尝试了几种方法，但总是出错。

But I can do it. I tried to do it several ways but I always get errors.

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

也

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

所有这些方式都会产生错误。

All these ways generate error.

我应该如何使用Java Bouncy Castle引擎导入公钥？

How should I import Public key using Java Bouncy Castle engine?

推荐答案

我找到了解决方法

    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端进行加密并在Server（PHP）端进行解密

Now i can encrypt on Java side and decrypt on Server (PHP) side

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