Java 使用 Bouncy Castle 生成密钥对
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Generating keyPair using Bouncy Castle
提问by Vaibhav
I have Java code for generating keypair using BC as follows:
我有使用 BC 生成密钥对的 Java 代码，如下所示：
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));
Now I want to do same in C# using BC. I have downloaded WP8BouncyCastle library via nuget package manager. I have written as:
现在我想在 C# 中使用 BC 做同样的事情。我已经通过 nuget 包管理器下载了 WP8BouncyCastle 库。我已经写成：
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()));
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#.
但是我需要getEncoded()Java 中可用的方法，而 C# 中的 BC 库中没有该方法。此getEncoded()方法用于将给定的密钥转换为 X.509 编码的密钥。在 Java 的情况下，公钥被转换两次（getencoded()和getBytes()），我无法在 C# 中做同样的事情。
Is there any solution to it?
有什么解决办法吗？
采纳答案by ikolomiyets
Use the following code for private key:
使用以下代码作为私钥：
PrivateKeyInfo pkInfo = PrivateKeyInfoFactory.CreatePrivateKeyInfo(keyPair.Private);
String privateKey = Convert.ToBase64String(pkInfo.GetDerEncoded());
and following for public:
并为公众提供以下内容：
SubjectPublicKeyInfo info = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(keyPair.Public);
String publicKey = Convert.ToBase64String(info.GetDerEncoded());
