Question

我们使用CertEnroll在客户端上生成了有效的PKCS＃10证书申请。

现在我们需要对其进行签名并将结果返回给客户端，其中CertEnroll将处理本地证书库的内容。

这是一个B2B应用程序，根签名证书将自行生成，或者我们可以使用我们现有的Thawte SSL证书。

Server（2008）没有运行Active Directory，除非绝对必要，否则我们不希望为此创建独立的签名基础结构/服务。不需要撤销等 - 我们希望以编程方式进行撤销。

我很乐意使用BouncyCastle库但是C＃lib缺少任何有意义的文档，而原始的Java文档无疑是相似的，而C＃实现的不同之处让我更加困惑。

是否有人知道（或拥有）样本C＃（或VB）代码或使用BouncyCastle或本地.Net类的已知相关链接？

非常感谢任何协助完成这项工作！

Answer 1

至少可以说这是一个有趣的练习： - ）

我们使用了BouncyCastle和.Net证书对象。解决方案仍然有很多！改进的余地，但确实有效。

它的内心（Cert Gen）如下。当我们到达这里时，CSR已经在客户端上生成，当我们离开时，生成的证书由客户端代码安装（请参阅this blog了解客户端工作。）

同样，我不是将此作为成品提供，但希望对面临同样任务的人有一定的价值。快乐加密： - ）

        // Jul 10, 2012 see
        // http://social.technet.microsoft.com/Forums/en-NZ/winserversecurity/thread/45781b46-3eb7-4715-b877-883bf0dc2ae7
        // instaed of CX509CertificateRequestPkcs10 csr = new CX509CertificateRequestPkcs10(); use:
        IX509CertificateRequestPkcs10 csr = (IX509CertificateRequestPkcs10)Activator.CreateInstance(Type.GetTypeFromProgID("X509Enrollment.CX509CertificateRequestPkcs10"));
        csr.InitializeDecode(csrText, EncodingType.XCN_CRYPT_STRING_BASE64);
        csr.CheckSignature(Pkcs10AllowedSignatureTypes.AllowedKeySignature);

        //get Bouncy CSRInfo Object
        Trace.Write("get Bouncy CSRInfo Object");
        Byte[] csrBytes = Convert.FromBase64String(csrText);
        CertificationRequestInfo csrInfo = CertificateTools.GetCsrInfo(csrBytes);
        SubjectPublicKeyInfo pki = csrInfo.SubjectPublicKeyInfo;

        //pub key for the signed cert
        Trace.Write("pub key for the signed cert");
        AsymmetricKeyParameter publicKey = PublicKeyFactory.CreateKey(pki);

        // Build a Version1 (No Extensions) Certificate
        DateTime startDate = DateTime.Now;
        DateTime expiryDate = startDate.AddYears(100);
        BigInteger serialNumber = new BigInteger(32, new Random());

        Trace.Write("Build a Version1 (No Extensions) Certificate");
        X509V1CertificateGenerator certGen = new X509V1CertificateGenerator();
        string signerCN = ConfigurationManager.AppSettings["signerCN"].ToString();
        X509Name dnName = new X509Name(String.Format("CN={0}", signerCN));
        X509Name cName = new X509Name(csr.Subject.Name);
        certGen.SetSerialNumber(serialNumber);
        certGen.SetIssuerDN(dnName);
        certGen.SetNotBefore(startDate);
        certGen.SetNotAfter(expiryDate);
        certGen.SetSubjectDN(cName);
        certGen.SetSignatureAlgorithm("SHA1withRSA");
        certGen.SetPublicKey(publicKey);

        //get our Private Key to Sign with
        Trace.Write("get our Private Key to Sign with");
        X509Store store = new X509Store(StoreLocation.LocalMachine);
        store.Open(OpenFlags.ReadOnly);
        string signerThumbprint = ConfigurationManager.AppSettings["signerThumbprint"].ToString();
        X509Certificate2Collection collection = (X509Certificate2Collection)store.Certificates;
        X509Certificate2Collection fcollection = (X509Certificate2Collection)collection.Find(X509FindType.FindByThumbprint, signerThumbprint, false);
        X509Certificate2 caCert = fcollection[0];

        Trace.Write("Found:" + caCert.FriendlyName);
        Trace.Write("Has Private " + caCert.HasPrivateKey.ToString());
        Trace.Write("Key Size " + caCert.PrivateKey.KeySize.ToString());

        //Get our Signing Key as a Bouncy object
        Trace.Write("Get our Signing Key as a Bouncy object from key ");
        AsymmetricCipherKeyPair caPair = DotNetUtilities.GetKeyPair(caCert.PrivateKey);

        //gen BouncyCastle object
        Trace.Write("gen BouncyCastle object");
        Org.BouncyCastle.X509.X509Certificate cert = certGen.Generate(caPair.Private);

        //convert to windows type 2 and get Base64 String
        Trace.Write("convert to windows type 2 and get Base64 String");
        X509Certificate2 cert2 = new X509Certificate2(DotNetUtilities.ToX509Certificate(cert));
        byte[] encoded = cert2.GetRawCertData();
        string certOutString = Convert.ToBase64String(encoded);

        //output to the page (hidden)
        Certificate.Value = certOutString;

.Net以编程方式与Bouncy Castle签署PKCS＃10请求

1 个答案: