使用OpenSSL.NET与现有密钥解密RSA [英] Decrypting RSA using OpenSSL.NET with Existing Key

问题描述

我有以下代码，使用OpenSSL.Net生成OpenSSL RSA公钥和私钥。但是，我似乎找不到使用给定私钥解密数据的方法。我知道如果我调用生成的密钥，然后相应的方法加密和解密数据，它工作正常。但是，如果我正在尝试从给定公钥的外部源解密某些东西，那么如何使用该密钥进行解密。

I have the following code below to generate an OpenSSL RSA public and private key using OpenSSL.Net. However, I can't seem to find a way to decrypt data with a given private key. I know if I call generate keys and then the corresponding methods to encrypt and decrypt the data it works fine. However, if I am trying to decrypt something from an external source given a public key, how can I decrypt using that key.

注意：请不要举例说明不要使用OpenSSL.NET。 Microsoft加密提供商比OpenSSL慢得多，不符合我的速度要求。

Note: Please do not give examples that don't use OpenSSL.NET. The Microsoft Cryptographic providers are far slower than OpenSSL and do not meet my speed requirements.

谢谢！

public class AsymmetricKeyResult
{
    public string PublicKey { get; set; }
    public string PrivateKey { get; set; }

    public AsymmetricKeyResult(string publicKey, string privateKey)
    {
        this.PublicKey = publicKey;
        this.PrivateKey = privateKey;
    }
}

public static AsymmetricKeyResult GenerateAsymmetricKeys(int keyLength)
{
    RSA rsa = new RSA();
    rsa.GenerateKeys(keyLength, 0x10021, null, null);
    AsymmetricKeyResult kResult = new AsymmetricKeyResult(rsa.PublicKeyAsPEM, rsa.PrivateKeyAsPEM);

    return kResult;
}

推荐答案

我最终弄清楚了通过OpenSSL.NET的Managed Wrapper的对象浏览器。这个工作原理：

I ended up figuring it out through the object browser on the Managed Wrapper for OpenSSL.NET. This works:

    public static byte[] AsymmetricEncrypt(string publicKeyAsPem, byte[] payload)
    {
        CryptoKey d = CryptoKey.FromPublicKey(publicKeyAsPem, null);
        RSA rsa = d.GetRSA();
        byte[] result = rsa.PublicEncrypt(payload, RSA.Padding.PKCS1);
        rsa.Dispose();
        return result;
    }

    public static byte[] AsymmetricDecrypt(string privateKeyAsPem, byte[] payload)
    {
        CryptoKey d = CryptoKey.FromPrivateKey(privateKeyAsPem, null);
        RSA rsa = d.GetRSA();
        byte[] result = rsa.PrivateDecrypt(payload, RSA.Padding.PKCS1);
        rsa.Dispose();
        return result;
    }

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