BouncyCastle专用密钥到X509Certificate2专用密钥

问题描述

| 我使用BouncyCastle创建证书

        var keypairgen = new RsaKeyPairGenerator();
        keypairgen.Init(new KeyGenerationParameters(new SecureRandom(new CryptoApiRandomGenerator()),1024));

        var keypair = keypairgen.GenerateKeyPair();

        var gen = new X509V3CertificateGenerator();

        var CN = new X509Name(\"CN=\" + certName);
        var SN = BigInteger.ProbablePrime(120,new Random());

        gen.SetSerialNumber(SN);
        gen.SetSubjectDN(CN);
        gen.SetIssuerDN(CN);
        gen.SetNotAfter(DateTime.Now.AddYears(1));
        gen.SetNotBefore(DateTime.Now.Subtract(new TimeSpan(7,0)));
        gen.SetSignatureAlgorithm(\"MD5WithRSA\");
        gen.SetPublicKey(keypair.Public);

        gen.AddExtension( 
            X509Extensions.AuthorityKeyIdentifier.Id,false,new AuthorityKeyIdentifier( 
                SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(keypair.Public),new GeneralNames(new GeneralName(CN)),SN 
            )); 

        gen.AddExtension( 
            X509Extensions.ExtendedKeyUsage.Id,new ExtendedKeyUsage(new ArrayList() 
            { 
                new DerObjectIdentifier(\"1.3.6.1.5.5.7.3.1\") 
            }));

        var newCert = gen.Generate(keypair.Private);

结束于

X509Certificate2 certificate = new X509Certificate2(DotNetUtilities.ToX509Certificate((Org.BouncyCastle.X509.X509Certificate)newCert));

现在，因为我的任务告诉我将证书和私钥都存储在X509Certificate2对象中，所以我需要一种将密钥对.Private转换为X509Certificate2.Private的方法。有任何想法吗？ 谢谢。     

解决方法

如果您查看此问题的链接，则应该可以使用类似于

DotNetUtilities.ToRSA(...)

的值并将其返回值放入

X509Certificate2

\的

PrivateKey

中。     ,只是冗长，这是创建X509Certificate2证书后要添加的完整代码：

RSA rsaPriv = DotNetUtilities.ToRSA(keypair.Private as RsaPrivateCrtKeyParameters);
certificate.PrivateKey = rsaPriv;

（当然可以将其优化为一行。）     ,对于尝试将X509Certificate2导出到PKCS12并保留私钥的任何人。这是我要做的：

        // Convert BouncyCastle X509 Certificate to .NET\'s X509Certificate
        var cert = DotNetUtilities.ToX509Certificate(certificate);
        var certBytes = cert.Export(X509ContentType.Pkcs12,\"password\");

        // Convert X509Certificate to X509Certificate2
        var cert2 = new X509Certificate2(certBytes,\"password\");

        // Convert BouncyCastle Private Key to RSA
        var rsaPriv = DotNetUtilities.ToRSA(issuerKeyPair.Private as RsaPrivateCrtKeyParameters);

        // Setup RSACryptoServiceProvider with \"KeyContainerName\" set
        var csp = new CspParameters();
        csp.KeyContainerName = \"KeyContainer\";

        var rsaPrivate = new RSACryptoServiceProvider(csp);

        // Import private key from BouncyCastle\'s rsa
        rsaPrivate.ImportParameters(rsaPriv.ExportParameters(true));

        // Set private key on our X509Certificate2
        cert2.PrivateKey = rsaPrivate;

        // Export Certificate with private key
        File.WriteAllBytes(@\"C:\\Temp\\cert.pfx\",cert2.Export(X509ContentType.Pkcs12,\"password\"));

    ,我想分享一下我的方法： pfx使用充气城堡到System.Security.Cryptography.X509Certificates.X509Certificate2。

        public static X509Certificate2 OpenCertificate(string pfxPath,string contrasenia)
    {
        System.Security.Cryptography.X509Certificates.X509Certificate2 x509 = default(System.Security.Cryptography.X509Certificates.X509Certificate2);

        MemoryStream ms = new MemoryStream(File.ReadAllBytes(pfxPath));

        Org.BouncyCastle.Pkcs.Pkcs12Store st = new Org.BouncyCastle.Pkcs.Pkcs12Store(ms,contrasenia.ToCharArray());

        var alias = st.Aliases.Cast<string>().FirstOrDefault(p => st.IsCertificateEntry(p));
        Org.BouncyCastle.Pkcs.X509CertificateEntry keyEntryX = st.GetCertificate(alias);

        x509 = new System.Security.Cryptography.X509Certificates.X509Certificate2(DotNetUtilities.ToX509Certificate(keyEntryX.Certificate));

        alias = st.Aliases.Cast<string>().FirstOrDefault(p => st.IsKeyEntry(p));
        Org.BouncyCastle.Pkcs.AsymmetricKeyEntry keyEntry = st.GetKey(alias);
        System.Security.Cryptography.RSACryptoServiceProvider intermediateProvider = (System.Security.Cryptography.RSACryptoServiceProvider)Org.BouncyCastle.Security.DotNetUtilities.ToRSA((Org.BouncyCastle.Crypto.Parameters.RsaPrivateCrtKeyParameters)keyEntry.Key);

        x509.PrivateKey = intermediateProvider;

        return x509;
    }