无法验证带有 CERTENROLL.dll 的 C# 非自签名客户端证书答案

【问题标题】：C# Non self signed client certs with CERTENROLL.dll are unable to be verified无法验证带有 CERTENROLL.dll 的 C# 非自签名客户端证书
【发布时间】：2016-02-01 21:31:15
【问题描述】：

这是C# Generate a non self signed client CX509Certificate Request without a CA using the certenroll.dll的后续行动

我正在尝试创建一个由我的自签名 CA 签名的客户端证书，如上述问题所示。我可以使用makecert.exe（它们显示为受信任）毫无问题地创建所需的证书。我试图在C# 中做同样的事情。证书被创建并放置在机器的My 存储中。自签名 CA 也安装在机器的 Trusted 存储中。当我打开它们时，它们会说：

Windows 没有足够的信息来验证此证书。

帮助？

代码：

// create DN
var dn = new CX500DistinguishedName();
dn.Encode("CN=Demo Cert", X500NameFlags.XCN_CERT_NAME_STR_NONE);

// create prvate key
var pk = new CX509PrivateKey();
pk.MachineContext = true;
pk.Length = 1024;
pk.KeySpec = X509KeySpec.XCN_AT_KEYEXCHANGE;
pk.ExportPolicy = X509PrivateKeyExportFlags.XCN_NCRYPT_ALLOW_EXPORT_FLAG;
pk.Create();

// use SHA512
var hash = new CObjectId();
hash.InitializeFromAlgorithmName(ObjectIdGroupId.XCN_CRYPT_HASH_ALG_OID_GROUP_ID, ObjectIdPublicKeyFlags.XCN_CRYPT_OID_INFO_PUBKEY_ANY, AlgorithmFlags.AlgorithmFlagsNone, "SHA512");

// EKU
var oid = new CObjectId();
oid.InitializeFromValue("1.3.6.1.5.5.7.3.2");
var oidlist = new CObjectIds();
oidlist.Add(oid);
var eku = new CX509ExtensionEnhancedKeyUsage();
eku.InitializeEncode(oidlist);

// Initialize the signer
var TheCA = GimmeTheCA(); // method returns my self signed CA as X509Certificate2
ISignerCertificate signer = new CSignerCertificate();
signer.Initialize(true, X509PrivateKeyVerify.VerifyNone, EncodingType.XCN_CRYPT_STRING_HEX, TheCA.GetRawCertDataString());

// Root Dn
var Rootdn = new CX500DistinguishedName();
Rootdn.Encode(TheCA.Subject, X500NameFlags.XCN_CERT_NAME_STR_NONE);

// Cert Request
var cert = new CX509CertificateRequestCertificate();
cert.InitializeFromPrivateKey(X509CertificateEnrollmentContext.ContextMachine, pk, "");
cert.Subject = dn;
cert.Issuer = Rootdn;
cert.SignerCertificate = (CSignerCertificate)signer;
cert.NotBefore = DateTime.Now;
cert.NotAfter = new DateTime(2020, 1, 1);
cert.X509Extensions.Add((CX509Extension)eku);
cert.HashAlgorithm = hash;
cert.Encode();

// Enrollment
var enroll = new CX509Enrollment();
enroll.InitializeFromRequest(cert);
enroll.CertificateFriendlyName = "Intel IPT";
string csr = enroll.CreateRequest();

// Install
enroll.InstallResponse(InstallResponseRestrictionFlags.AllowUntrustedRoot, csr, EncodingType.XCN_CRYPT_STRING_BASE64, "");

【问题讨论】：

你找到解决办法了吗？
没有。我没有使用自签名证书，而是使用了来自 MS 独立 CA 的证书。

标签： c# self-signed certenroll

【解决方案1】：

你可以试试：

pk.KeySpec = X509KeySpec.XCN_AT_SIGNATURE;
pk.KeyUsage = X509PrivateKeyUsageFlags.XCN_NCRYPT_ALLOW_ALL_USAGES;
以提升的权限运行应用程序（以管理员身份运行）。
将 CA 证书的副本放入“Computer\Personal”（“MY”）存储中（但将原始证书保留在“Computer\Trusted Root Cert. Auth.”（“Root”）存储中)

【讨论】：