如何阅读从.NET PEM的RSA私钥 [英] How to read a PEM RSA private key from .NET

问题描述

我有在 PEM 格式的 RSA 私钥，是否有一个简单的方法来读取从.NET和实例化一个的RSACryptoServiceProvider 来解密加密对应的公钥数据？

I've got an RSA private key in PEM format, is there a straight forward way to read that from .NET and instantiate an RSACryptoServiceProvider to decrypt data encrypted with the corresponding public key?

推荐答案

我解决了，谢谢。如果任何人的兴趣， BouncyCastle的的伎俩，只是我花了一些时间，由于从我身边认识不足和文档。这是code：

I solved, thanks. In case anyone's interested, bouncycastle did the trick, just took me some time due to lack of knowledge from on my side and documentation. This is the code:

var bytesToDecrypt = Convert.FromBase64String("la0Cz.....D43g=="); // string to decrypt, base64 encoded

AsymmetricCipherKeyPair keyPair; 

using (var reader = File.OpenText(@"c:\myprivatekey.pem")) // file containing RSA PKCS1 private key
    keyPair = (AsymmetricCipherKeyPair) new PemReader(reader).ReadObject(); 

var decryptEngine = new Pkcs1Encoding(new RsaEngine());
decryptEngine.Init(false, keyPair.Private); 

var decrypted = Encoding.UTF8.GetString(decryptEngine.ProcessBlock(bytesToDecrypt, 0, bytesToDecrypt.Length)); 

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