我想用CertEnroll.dll写一个函数来生成由我的根证书签署的客户证书，我在特定的位置有根PFX文件，通过读取该文件来创建CSignerCertificate对象。
我收到以下代码的错误信息："CertEnroll::CSignerCertificate::Initialize: 无法找到对象或属性。0x80092004 (-2146885628 CRYPT_E_NOT_FOUND)' 。
public static X509Certificate2 CertCreateNew(string subjectName)
{
// create DN for subject and issuer
var dn = new CX500DistinguishedName();
dn.Encode("CN=" + subjectName, X500NameFlags.XCN_CERT_NAME_STR_NONE);
// create a new private key for the certificate
CX509PrivateKey privateKey = new CX509PrivateKey();
privateKey.ProviderName = "Microsoft Base Cryptographic Provider v1.0";
privateKey.MachineContext = false;
privateKey.Length = 2048;
privateKey.KeySpec = X509KeySpec.XCN_AT_SIGNATURE; // use is not limited
privateKey.ExportPolicy = X509PrivateKeyExportFlags.XCN_NCRYPT_ALLOW_PLAINTEXT_EXPORT_FLAG;
privateKey.Create();
var hashobj = new CObjectId();
hashobj.InitializeFromAlgorithmName(ObjectIdGroupId.XCN_CRYPT_HASH_ALG_OID_GROUP_ID,
ObjectIdPublicKeyFlags.XCN_CRYPT_OID_INFO_PUBKEY_ANY,
AlgorithmFlags.AlgorithmFlagsNone, "SHA256");
// add extended key usage if you want - look at MSDN for a list of possible OIDs
var oid = new CObjectId();
oid.InitializeFromValue("1.3.6.1.5.5.7.3.1"); // SSL server
var oidlist = new CObjectIds();
oidlist.Add(oid);
var eku = new CX509ExtensionEnhancedKeyUsage();
eku.InitializeEncode(oidlist);
// Create the self signing request
var cert = new CX509CertificateRequestCertificate();
X509Certificate2 signercertificate = CertOpen("My Personal CA");
X509Certificate2 signer = new X509Certificate2(System.IO.File.ReadAllBytes(@"d:\\PKICertificates\\Root Certificates\\MyPersonalCA.pfx"), "password");
if (signer == null)
{
throw new CryptographicException("Signer not found");
}
ISignerCertificate signerCertificate = new CSignerCertificate();
signerCertificate.Initialize(false, X509PrivateKeyVerify.VerifySilent, EncodingType.XCN_CRYPT_STRING_BASE64, Convert.ToBase64String(signer.RawData));
cert.Issuer.Encode(signer.Subject, X500NameFlags.XCN_CERT_NAME_STR_NONE);
cert.InitializeFromPrivateKey(X509CertificateEnrollmentContext.ContextUser, privateKey, "");
cert.SignerCertificate = (CSignerCertificate)signerCertificate;
cert.Subject = dn;
cert.NotBefore = DateTime.Now;
// this cert expires immediately. Change to whatever makes sense for you
cert.NotAfter = DateTime.Now.AddYears(10);
cert.X509Extensions.Add((CX509Extension)eku); // add the EKU
cert.HashAlgorithm = hashobj; // Specify the hashing algorithm
cert.Encode(); // encode the certificate
// Do the final enrollment process
var enroll = new CX509Enrollment();
enroll.InitializeFromRequest(cert); // load the certificate
enroll.CertificateFriendlyName = subjectName; // Optional: add a friendly name
string csr = enroll.CreateRequest(); // Output the request in base64
// and install it back as the response
enroll.InstallResponse(InstallResponseRestrictionFlags.AllowUntrustedCertificate,
csr, EncodingType.XCN_CRYPT_STRING_BASE64, ""); // no password
// output a base64 encoded PKCS#12 so we can import it back to the .Net security classes
var base64encoded = enroll.CreatePFX("", // no password, this is for internal consumption
PFXExportOptions.PFXExportChainWithRoot);
// instantiate the target class with the PKCS#12 data (and the empty password)
return new System.Security.Cryptography.X509Certificates.X509Certificate2(
System.Convert.FromBase64String(base64encoded), "",
// mark the private key as exportable (this is usually what you want to do)
System.Security.Cryptography.X509Certificates.X509KeyStorageFlags.Exportable
);
}
有谁知道我怎样才能生成一个由我的root签名的客户端CX509CertificateRequest？
任何帮助或建议都将非常感激。
我通过试错找到了答案，最终获得了成功。在这里发布代码可能会对其他得到相同错误的人有帮助。
注意：不需要分配 Issuer 属性，它会自动设置，如果 IssuerCertificate 属性在 Encode 之前分配了
public static X509Certificate2 CertCreateNew(string subjectName)
{
X509Certificate2 signer = new X509Certificate2(System.IO.File.ReadAllBytes(@"d:\\PKICertificates\\Root Certificates\\MyPersonalCA.pfx"), "password");
// create DN for subject and issuer
var dn = new CX500DistinguishedName();
dn.Encode("CN=" + subjectName, X500NameFlags.XCN_CERT_NAME_STR_NONE);
// create a new private key for the certificate
CX509PrivateKey privateKey = new CX509PrivateKey();
privateKey.ProviderName = "Microsoft Base Cryptographic Provider v1.0";
privateKey.MachineContext = false;
privateKey.Length = 2048;
privateKey.KeySpec = X509KeySpec.XCN_AT_SIGNATURE; // use is not limited
privateKey.ExportPolicy = X509PrivateKeyExportFlags.XCN_NCRYPT_ALLOW_PLAINTEXT_EXPORT_FLAG;
privateKey.Create();
var hashobj = new CObjectId();
hashobj.InitializeFromAlgorithmName(ObjectIdGroupId.XCN_CRYPT_HASH_ALG_OID_GROUP_ID,
ObjectIdPublicKeyFlags.XCN_CRYPT_OID_INFO_PUBKEY_ANY,
AlgorithmFlags.AlgorithmFlagsNone, "SHA256");
// add extended key usage if you want - look at MSDN for a list of possible OIDs
var oid = new CObjectId();
oid.InitializeFromValue("1.3.6.1.5.5.7.3.2"); // SSL server
var oidlist = new CObjectIds();
oidlist.Add(oid);
var eku = new CX509ExtensionEnhancedKeyUsage();
eku.InitializeEncode(oidlist);
// Create the self signing request
var cert = new CX509CertificateRequestCertificate();
if (signer == null)
throw new CryptographicException("Signer not found");
ISignerCertificate signerCertificate = new CSignerCertificate();
signerCertificate.Initialize(false, X509PrivateKeyVerify.VerifySilent, EncodingType.XCN_CRYPT_STRING_BASE64, Convert.ToBase64String(signer.RawData));
cert.InitializeFromPrivateKey(X509CertificateEnrollmentContext.ContextUser, privateKey, "");
cert.SignerCertificate = (CSignerCertificate)signerCertificate;
cert.Subject = dn;
cert.NotBefore = DateTime.Now.Date;
cert.NotAfter = cert.NotBefore + new TimeSpan(3650, 0, 0, 0);
cert.X509Extensions.Add((CX509Extension)eku); // add the EKU
cert.HashAlgorithm = hashobj; // Specify the hashing algorithm
cert.Encode(); // encode the certificate
// Do the final enrollment process
var enroll = new CX509Enrollment();
enroll.InitializeFromRequest(cert); // load the certificate
enroll.CertificateFriendlyName = subjectName; // Optional: add a friendly name
string csr = enroll.CreateRequest();
enroll.InstallResponse(InstallResponseRestrictionFlags.AllowUntrustedCertificate,
csr, EncodingType.XCN_CRYPT_STRING_BASE64, "");
var base64encoded = enroll.CreatePFX("", // no password, this is for internal consumption
PFXExportOptions.PFXExportChainWithRoot);
// instantiate the target class with the PKCS#12 data (and the empty password)
return new System.Security.Cryptography.X509Certificates.X509Certificate2(
System.Convert.FromBase64String(base64encoded), "",
// mark the private key as exportable (this is usually what you want to do)
System.Security.Cryptography.X509Certificates.X509KeyStorageFlags.Exportable
);
}