Microsoft KB Archive/291010

= Requirements for Domain Controller Certificates from a Third-Party CA =

Article ID: 291010

Article Last Modified on 3/1/2007

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server

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This article was previously published under Q291010





SUMMARY
This article describes the requirements that you need to fulfill to issue a domain controller certificate from a third-party certification authority (CA).



Support

 * Currently, Microsoft supports the use of third-party domain controller certificates with smart card logon only.
 * Currently, Microsoft does not support the use of certificates from third-party CAs to support SMTP replication between domain controllers.
 * Third-party CAs do not support the automatic enrollment and renewal of domain controller or computer certificates.

Requirements
 You can manually issue a certificate to a domain controller. The certificate for the domain controller must meet the following specific format requirements:  The certificate must have a CRL distribution-point extension that points to a valid certificate revocation list (CRL). Optionally, the certificate Subject section should contain the directory path of the server object (the distinguished name), for example:

CN=server1.northwindtraders.com OU=Domain Controllers DC=northwwindtraders DC=com

 The certificate Key Usage section must contain:

Digital Signature, Key Encipherment

 Optionally, the certificate Basic Constraints section should contain:

[Subject Type=End Entity, Path Length Constraint=None]

 The certificate Enhanced Key Usage section must contain: <ul> Client Authentication (1.3.6.1.5.5.7.3.2)</li> Server Authentication (1.3.6.1.5.5.7.3.1)</li></ul> </li> The certificate Subject Alternative Name section must contain the globally unique identifier (GUID) of the domain controller object in the directory and the Domain Name System (DNS) name, for example:

Other Name: 1.3.6.1.4.1.311.25.1 = ac 4b 29 06 aa d6 5d 4f a9 9c 4c bc b0 6a 65 d9 DNS Name=server1.northwindtraders.com

</li> The certificate template must have an extension with the BMP data value &quot;DomainController&quot;.

NOTE: The dsstore.exe -dcmon command does not recognize the certificate without one of these extensions.</li> You must use the Schannel cryptographic service provider (CSP) to generate the key.</li></ul> </li> The domain controller certificate must be installed in the local computer's certificate store.</li></ul>

Sample Certificate
<pre class="fixed_text">X509 Certificate: Version: 3 Serial Number: 61497f5e000000000006 Signature Algorithm: Algorithm ObjectId: 1.2.840.113549.1.1.5 sha1RSA Algorithm Parameters: 05 00                                             .. Issuer: CN=TestCA DC=northwindtraders DC=com

NotBefore: 2/12/2001 3:57 PM NotAfter: 7/10/2001 10:24 AM

Subject: CN=TEST-DC1 OU=Domain Controllers DC=northwindtraders DC=com

Public Key Algorithm: Algorithm ObjectId: 1.2.840.113549.1.1.1 RSA Algorithm Parameters: 05 00                                             .. Public Key Length: 1024 bits Public Key: UnusedBits = 0 0000 30 81 89 02 81 81 00 b1  c8 84 ce ea 5c da 96 23 0010 4b d5 07 d7 27 f3 76 1f  d3 0f 23 3f 8b fa 8b 68 0020 34 09 47 4a f5 33 41 77  86 d2 d3 a7 34 19 5c 49 0030 43 bf 5a 3c 25 a3 77 69  54 ad 84 af 20 b2 c2 f6    0040  40 f7 82 7f b9 b0 db cb  db 76 7c 13 54 8e 3b 5e 0050 9e 92 a2 42 8d 97 db 07  06 cc 5d 7a 95 9f 7f 8b 0060 c1 69 7b 0a 6a e7 8f fa  6b c4 60 23 d4 03 88 45 0070 83 61 2e b2 af a2 f9 69  e2 84 d9 95 01 c4 88 eb    0080  89 16 5a 4d a4 34 27 02  03 01 00 01 Certificate Extensions: 9 1.2.840.113549.1.9.15: Flags = 0, Length = 37 SMIME Capabilities [1]SMIME Capability Object ID=1.2.840.113549.3.2 Parameters=02 02 00 80 [2]SMIME Capability Object ID=1.2.840.113549.3.4 Parameters=02 02 00 80 [3]SMIME Capability Object ID=1.3.14.3.2.7 [4]SMIME Capability Object ID=1.2.840.113549.3.7

2.5.29.15: Flags = 0, Length = 4 Key Usage Digital Signature, Key Encipherment (a0)

2.5.29.37: Flags = 0, Length = 16 Enhanced Key Usage Client Authentication (1.3.6.1.5.5.7.3.2) Server Authentication (1.3.6.1.5.5.7.3.1)

1.3.6.1.4.1.311.20.2: Flags = 0, Length = 22 Certificate Template Name DomainController

2.5.29.14: Flags = 0, Length = 16 Subject Key Identifier a8 20 ce 65 63 3e cd a1 c8 77 97 44 fa 28 43 71 17 e3 6e 84

2.5.29.35: Flags = 0, Length = 18 Authority Key Identifier KeyID=44 b8 25 f8 d9 53 c5 96 e1 8c 14 d5 e4 5e 33 3a fc 22 7b e7

2.5.29.31: Flags = 0, Length = f8   CRL Distribution Points [1]CRL Distribution Point Distribution Point Name: Full Name: URL=http://test-dc1.northwindtraders.com/CertEnroll/TestCA.crl URL=ldap:///CN=TestCA,CN=test-dc1,CN=CDP,CN=Public%20Key%20Services,CN=Services,CN=Configuration,DC=northwindtraders,DC=com?certificateRevocationList?base?objectClass=cRLDistributionPoint

1.3.6.1.5.5.7.1.1: Flags = 0, Length = 10a Authority Information Access [1]Authority Info Access Access Method=Certification Authority Issuer (1.3.6.1.5.5.7.48.2) Alternative Name: URL=http://test-dc1.northwindtraders.com/CertEnroll/test-dc1.northwindtraders.com_TestCA.crt [2]Authority Info Access Access Method=Certification Authority Issuer (1.3.6.1.5.5.7.48.2) Alternative Name: URL=ldap:///CN=TestCA,CN=AIA,CN=Public%20Key%20Services,CN=Services,CN=Configuration,DC=northwindtraders,DC=com?cACertificate?base?objectClass=certificationAuthority

2.5.29.17: Flags = 0, Length = 3d Subject Alternative Name Other Name: 1.3.6.1.4.1.311.25.1=04 10 96 8e ea d7 ee ba bc 42 81 db 4f 92 f5 88 db 4a DNS Name=test-dc1.northwindtraders.com

Signature Algorithm: Algorithm ObjectId: 1.2.840.113549.1.1.5 sha1RSA Algorithm Parameters: 05 00                                             ..

How to Determine the Domain Controller GUID
Start Ldp.exe and locate the domain-naming context. Double-click the name of the domain controller that you want to view. The list of attributes for that object contains &quot;Object GUID&quot; followed by a long number. The number is the GUID for that object.

For additional information about object identifiers, click the article number below to view the article in the Microsoft Knowledge Base:

287547 Object IDs Associated with Microsoft Cryptography

For additional information about how to use Ldp.exe, click the article number below to view the article in the Microsoft Knowledge Base:

224543 Using Ldp.exe to Find Data in the Active Directory

Keywords: kb3rdparty kbcertservices kbinfo KB291010

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