使用Bouncy Castle生成keyPair [英] Generating keyPair using Bouncy Castle

问题描述

我有使用BC生成密钥对的Java代码，如下所示:

I have Java code for generating keypair using BC as follows:

KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
        keyGen.initialize(1024);
        KeyPair key = keyGen.generateKeyPair();
        PrivateKey priv = key.getPrivate();
        PublicKey pub = key.getPublic();
        String privateKey = new String(Base64.encode(priv.getEncoded(), 0,priv.getEncoded().length, Base64.NO_WRAP));
        String publicKey1 = new String(Base64.encode(pub.getEncoded(), 0,pub.getEncoded().length, Base64.NO_WRAP));
        String publicKey = new String(Base64.encode(publicKey1.getBytes(),0, publicKey1.getBytes().length, Base64.NO_WRAP));

现在，我想使用BC在C#中执行相同的操作.我已经通过nuget软件包管理器下载了WP8BouncyCastle库.我写为:

Now I want to do same in C# using BC. I have downloaded WP8BouncyCastle library via nuget package manager. I have written as:

var kpgen = new RsaKeyPairGenerator();

            kpgen.Init(new KeyGenerationParameters(new SecureRandom(new CryptoApiRandomGenerator()), 1024));

            var keyPair = kpgen.GenerateKeyPair();
            AsymmetricKeyParameter privateKey = keyPair.Private;
            AsymmetricKeyParameter publicKey = keyPair.Public;


            string prvKey = Convert.ToBase64String(UTF8Encoding.UTF8.GetBytes(privateKey.ToString()));
            string pubKey = Convert.ToBase64String(UTF8Encoding.UTF8.GetBytes(publicKey.ToString()));
            string pubKey1 = Convert.ToBase64String(UTF8Encoding.UTF8.GetBytes(pubKey.ToString()));

但是我需要Java中可用的 getEncoded()方法，而C#的BC库中没有此方法.此 getEncoded()方法用于将给定密钥转换为X.509编码的密钥.对于Java，公钥进行两次转换( getencoded()和getBytes())，我无法在C#中做同样的事情.

But I need getEncoded() method available in Java which is not available in BC library in C#. This getEncoded() method is used to convert given key into X.509 encoded key.In case of Java, public key getting twice converted (getencoded() and getBytes()) ,I am not able to do same in C#.

有什么解决办法吗?

推荐答案

使用以下代码作为私钥:

Use the following code for private key:

PrivateKeyInfo pkInfo = PrivateKeyInfoFactory.CreatePrivateKeyInfo(keyPair.Private);
String privateKey = Convert.ToBase64String(pkInfo.GetDerEncoded());

并关注以下内容:

SubjectPublicKeyInfo info = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(keyPair.Public);
String publicKey = Convert.ToBase64String(info.GetDerEncoded());

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