C＃(.NET)RSACRYPTOSERVICEPROVIDER进口/导出X509公钥BLOB和PKCS8私钥斑点

Question

首先让我说我不是加密专家，但我知道基础知识。

我想能够：

1. 从X509公共密钥blob
获得rsacryptoserviceprovider实例
2. 从pkcs8私钥blob
获取rsacryptoserviceprovider实例
3. 将公共密钥从rsacryptoserviceprovider实例导出为X509公共密钥blob
4. 将私钥从rsacryptoserviceprovider实例导出为pkcs8 blob

Answer 1

整天环顾四周后，我找到了这个存储库（非常感谢JRNKER），我选择了我需要的代码来满足目标1、2和3。p>由于Jrnker仅提供了从PKCS1 Blob中获得RsacryptoserviceProvider的方法（我需要的是PKCS8 Blob的RsacryptoserviceProvider），所以我一直在寻求满足目标4的目标4。我选择了所需的代码来满足目标编号4。

然后，我开始使用所需方法和类编译课程。

这是我的演示课：

using System;
namespace RSAKeyTests
{
    class Demo
    {
        static void Main(string[] args)
        {
            //EXPORTED KEYS
            string importedPublicKeyBase64 = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAhbVC4aUR+XRCepBcPlod69wruXqwW9yL/YJYvuaQ33QxUoAehQ0z4SuphHwEPxQp/qLqucmE6XKlEeTksFAmaGM88uuGessqMZmdu9WFhc07MWLTCifR43IRtGEeWeFSWjUI6mNRrShP3QQ3+Z6e7w+HRA2RpmgNgEhJRvECHAKpcpHvP9o5Sq6q/dIAyR6NEjRFhfud27rFtnWrLj+ZmIsScemvks4vh8V3n8EzxxRE8nzVuZYr4v4NNH+q95XgIadHZ1Y6ICXJgX2NfacNRQl9+SEv0Wo8lbmFSIO3jHqyiWuSugv7R3/rQPRXHT6HJAtw0tBiPOBitMkTzqOvIwIDAQAB";
            string importedPrivateKeyBase64 = "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";
            byte[] importedPublicKeyBytes = Convert.FromBase64String(importedPublicKeyBase64);
            byte[] importedPrivateKeyBytes = Convert.FromBase64String(importedPrivateKeyBase64);
            //PRINT INFO
            Console.WriteLine("------   IMPORTED KEY PAIR:   ------n");
            Console.WriteLine("PUBLIC KEY:n"+importedPublicKeyBase64+"nn");
            Console.WriteLine("PRIVATE KEY:n" + importedPrivateKeyBase64 + "nn");
            //GENERATING RSACRYPTOSERVICEPROVIDER FROM X509 PUBLIC KEY BLOB
            using (var providerFromX509pubKey = RSAKeyUtils.DecodePublicKey(importedPublicKeyBytes))
            {
                providerFromX509pubKey.PersistKeyInCsp = false; //DO NOT STORE IN KEYSTORE
                //EXPORT TO X509 PUBLIC KEY BLOB
                byte[] x509pubKeyBytes = RSAKeyUtils.PublicKeyToX509(providerFromX509pubKey.ExportParameters(false));
                //CONVERT TO BASE64
                string x509pubKeyBase64 = Convert.ToBase64String(x509pubKeyBytes);
                //PRINT INFO
                Console.WriteLine("------   PUBLIC KEY TO EXPORT   ------");
                Console.WriteLine("Public key to export matches imported? "+importedPublicKeyBase64.Equals(x509pubKeyBase64));
                Console.WriteLine(x509pubKeyBase64+"nn");
            }
            //GENERATING RSACRYPTOSERVICEPROVIDER FROM PKCS8 PRIVATE KEY BLOB
            using (var providerFromPKCS8privKey = RSAKeyUtils.DecodePrivateKeyInfo(importedPrivateKeyBytes))
            {
                providerFromPKCS8privKey.PersistKeyInCsp = false; //DO NOT STORE IN KEYSTORE
                //EXPORT TO PKCS8 PRIVATE KEY BLOB
                byte[] pkcs8privKeyBytes = RSAKeyUtils.PrivateKeyToPKCS8(providerFromPKCS1privKey.ExportParameters(true));
                //CONVERT TO BASE64
                string pkcs8privKeyBase64 = Convert.ToBase64String(pkcs8privKeyBytes);
                //PRINT INFO
                Console.WriteLine("------   PRIVATE KEY TO EXPORT   ------");
                Console.WriteLine("Private key to export matches imported? " + importedPrivateKeyBase64.Equals(pkcs8privKeyBase64));
                Console.WriteLine(pkcs8privKeyBase64);
            }
                //PREVENTS THE PROGRAM FROM EXITING
                Console.ReadKey();
        }
    }
}

这是" rsakeyutils" 我已经编译的类。

我希望这对别人有用。

Answer 2

首先，Java中的byte与.NET中的byte不同。Java仅签名整数，因此Java byte范围从-128到127，而.NET byte范围为0到255。但是我不确定这是问题所在。尝试在其正范围内使用较大类型，仅使用较低的8位。

第二，关于不良提供商版本的消息可能指示上述原因，或者可能只是误导性文本，这并不会真正有所帮助。我记得我曾经遇到过相同的错误消息，并且很难找到实际原因。几分钟前的快速搜索也没有成功。就我而言，我还有其他情况，因此我将无法直接指出您的问题。取而代之的是，我建议您检查填充模式，基本64翻译以及RSA算法周围的相关内容，并尝试找到一种与您想要的相同的替代方法。在到达那里的路上，您可能会偶然发现实际问题。