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Sample Script to Configure IntermediateCA

Updated: February 14, 2012

Applies To: Windows Server 2003 with SP1

The following script applies the most important configuration changes to a Windows Server 2003 CA for the IntermediateCA computer.

REM
REM CA configuration script for a Windows Server 2003 CA
REM
REM The naming context applies to the individual organizations Active
Directory
REM configuration
REM
SET myADnamingcontext=DC=concorp,DC=contoso,DC=com
REM
REM This variable directs to the HTTP publication location that is used
for
REM the CRL and AIA publication
REM
SET myhttpPKIvroot=http://www.contoso.com/pki
REM
REM Because CRLs and CA certificates are published in the
organizations Active
REM Map the namespace of Active Directory
REM
certutil.exe -setreg ca\DSConfigDN
"CN=Configuration,%myADnamingcontext%"
REM
REM Configure CRL and AIA CDP
REM
REM By default, Certutil creates a registry value of type REG_SZ if a
string is
REM specified as a parameter. Some registry values are expected as
REG_MULTI_SZ.
REM To create a REG_MULTI_SZ instead of a REG_SZ, add a \n to the end
of any value
REM that becomes part of the REG_MULTI_SZ
REM
certutil -setreg CA\CRLPublicationURLs
"1:%WINDIR%\system32\CertSrv\CertEnroll\%%3%%8%%9.crl\n2:%myhttp
PKIvroot%/%%3%%8%%9.crl\n10:ldap:///CN=%%7%%8,CN=%%2,
CN=CDP,CN=Public Key Services,CN=Services,%%6%%10"
certutil -setreg CA\CACertPublicationURLs
"1:%WINDIR%\system32\CertSrv\CertEnroll\%%1_%%3%%4.crt\n2:%myhttp
PKIvroot%/%%1_%%3%%4.crt\n2:ldap:///CN=%%7,CN=AIA,
CN=Public Key Services,CN=Services,%%6%%11"
REM
REM Configure CRL publication
REM
certutil -setreg CA\CRLPeriodUnits 30
certutil -setreg CA\CRLPeriod "Days"
REM
REM Disable Delta CRL publication
REM
certutil -setreg CA\CRLDeltaPeriodUnits 0
REM
REM Set the validity period for issued certificates
REM
certutil -setreg ca\ValidityPeriodUnits 5
certutil -setreg ca\ValidityPeriod "Years"
REM
REM Include certificate policies in certificate request
REM
certutil -v -setreg policy\EnableRequestExtensionlist "+2.5.29.32"
REM
REM
REM Disable issuer name and issuer serial number
REM
certutil -setreg policy\EditFlags -EDITF_ENABLEAKIISSUERNAME
certutil -setreg policy\EditFlags -EDITF_ENABLEAKIISSUERSERIAL
REM
REM Restart the CA server service
REM
net stop certsvc & net start certsvc
REM
REM Repair CA files-system shares and IIS virtual roots
REM
certutil -vroot
REM
REM Republish the CRL
REM It might happen that CRL publishing fails immediately
REM after the CA server service has been restarted. If this
REM is the case, try certutil –CRL at a command prompt again.
REM
certutil -CRL

The following script applies the same configuration as the previous script but the following script configures a Windows 2000 CA. Remember that the delta CRL configuration parameter is not supported in a Windows 2000 CA environment. To use the certutil –URL and certutil –vroot command, you must run the Windows Server 2003 version of the certutil utility on the Windows 2000 CA computer.

REM
REM CA configuration script for a Windows 2000 CA
REM
REM This variable directs to the HTTP publication location that is used
for
REM the CRL and AIA publication
REM
SET myhttpPKIvroot=http://www.contoso.com/pki
REM
REM Configure CRL and AIA CDP
REM
REM By default, certutil creates a registry value of type REG_SZ if a
string is
REM specified as a parameter. Some registry values are expected as
REG_MULTI_SZ. To
REM create a REG_MULTI_SZ value instead of a REG_SZ value, add \n to
the end of any
REM value that becomes part of REG_MULTI_SZ.
REM
certutil -setreg policy\FileRevocationCRLURL \n
certutil -setreg policy\RevocationCRLURL
%myhttpPKIvroot%/%%3%%8.crl\n
certutil -setreg policy\LDAPRevocationCRLURL
ldap:///CN=%%7%%8,CN=%%2,CN=CDP,CN=Public Key Services,
CN=Services,%%6?certificateRevocationList?base?objectclass=
cRLDistributionPoint\n"
certutil -setreg policy\FileIssuercertURL
"%WINDIR%\system32\CertSrv\CertEnroll\%%1_%%3%%4.crt\n
certutil -setreg policy\IssuercertURL %myhttpPKIvroot%/%%1_%%3%%4.crt"
certutil -setreg policy\LDAPIssuercertURL
ldap:///CN=%%7,CN=AIA,CN=Public 
Key Services,CN=Services,%%6?cACertificate?base?objectclass=
certificationAuthority
REM
REM Configure CRL publication
REM
certutil -setreg CA\CRLPeriodUnits 30
certutil -setreg CA\CRLPeriod "Days"
REM
REM Set the validity period for issued certificates
REM
certutil -setreg ca\ValidityPeriodUnits 5
certutil -setreg ca\ValidityPeriod "Years"
REM
REM Include certificate policies in certificate request
REM
certutil -v -setreg policy\EnableRequestExtensionlist "+2.5.29.32"
REM
REM
REM Disable issuer name and issuer serial number
REM
certutil -setreg policy\EditFlags -EDITF_ENABLEAKIISSUERNAME
certutil -setreg policy\EditFlags -EDITF_ENABLEAKIISSUERSERIAL
REM
REM Restart the CA server service
REM
net stop certsvc & net start certsvc
REM
REM Repair CA files-system shares and IIS virtual roots
REM
certutil -vroot
REM
REM Republish the CRL.
REM It might happen that CRL publishing fails immediately
REM after the CA server service has been restarted. If this
REM is the case try certutil –CRL at a command prompt again.
REM
certutil -CRL

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