Retrieving an Active Directory Certificate

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If an error occurs, you can use certutil (a program that ships with Windows 2000/2003) or LDAP to retrievean Active Directory certificate, as described in the following sections.

Note –

The certutil command discussed in this sectionis not the same as the certutil commandthat ships with the Directory Server and discussed previously in this publication.

Using Window’s Certutil

To Retrieve an Active Directory Certificate Using the `certutil` program

Run the following command from the Active Directory machine toexport the certificate.
You can then import thecacert.bin file intoa certificate database.

Using LDAP

To Retrieve an Active Directory Certificate using LDAP

Execute the following search against Active Directory:

Where the administrator_DN might look like:

In this example, the domain name is: put.your.domain.name.here.
Several entries will match the search filter. You probably need the entryusing cn=Certification Authorities, cn=Public Key Services inits DN.
Open a text editor and cut the first value of the first CA certificateattribute (it should be a base64 encoded text block). Paste that value (text block) intothe text editor (only the value). Edit the contents, so that none of the linesstart with white space.
Add-----BEGIN CERTIFICATE----- before the firstline and -----END CERTIFICATE----- after the last line.See the following example: User manual for s7 samsung galaxy cell pone.
Save the certificate into a file (such as ad-cert.txt).
You can then import that file (for example, ad-cert.txt)into a certificate database. Continue to the next section, Adding Active Directory Certificates to the Connector’s Certificate Database

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This topic describes tasks and procedures that you can perform to ensure that your AD FS token signing and token decryption certificates are up to date.

Token signing certificates are standard X509 certificates that are used to securely sign all tokens that the federation server issues. Token decryption certificates are standard X509 certificates that are used to decrypt any incoming tokens. They are also published in federation metadata.

For additional information see Certificate Requirements

Determine whether AD FS renews the certificates automatically

By default, AD FS is configured to generate token signing and token decryption certificates automatically, both at the initial configuration time and when the certificates are approaching their expiration date.

You can run the following Windows PowerShell command: Get-AdfsProperties.

The AutoCertificateRollover property describes whether AD FS is configured to renew token signing and token decrypting certificates automatically.

If AutoCertificateRollover is set to TRUE, the AD FS certificates will be renewed and configured in AD FS automatically. Once the new certificate is configured, in order to avoid an outage, you must ensure that each federation partner (represented in your AD FS farm by either relying party trusts or claims provider trusts) is updated with this new certificate.

If AD FS is not configured to renew token signing and token decrypting certificates automatically (if AutoCertificateRollover is set to False), AD FS will not automatically generate or start using new token signing or token decrypting certificates. You will have to perform these tasks manually.

If AD FS is configured to renew token signing and token decrypting certificates automatically (AutoCertificateRollover is set to TRUE), you can determine when they will be renewed:

CertificateGenerationThreshold describes how many days in advance of the certificate's Not After date a new certificate will be generated.

CertificatePromotionThreshold determines how many days after the new certificate is generated that it will be promoted to be the primary certificate (in other words, AD FS will start using it to sign tokens it issues and decrypt tokens from identity providers).

If AD FS is configured to renew token signing and token decrypting certificates automatically (AutoCertificateRollover is set to TRUE), you can determine when they will be renewed:

CertificateGenerationThreshold describes how many days in advance of the certificate's Not After date a new certificate will be generated.
CertificatePromotionThreshold determines how many days after the new certificate is generated that it will be promoted to be the primary certificate (in other words, AD FS will start using it to sign tokens it issues and decrypt tokens from identity providers).

Determine when the current certificates expire

You can use the following procedure to identify the primary token signing and token decrypting certificates and to determine when the current certificates expire.

You can run the following Windows PowerShell command: Get-AdfsCertificate –CertificateType token-signing (or Get-AdfsCertificate –CertificateType token-decrypting). Or you can examine the current certificates in the MMC: Service->Certificates.

The certificate for which the IsPrimary value is set to True is the certificate that AD FS is currently using.

The date shown for the Not After is the date by which a new primary token signing or decrypting certificate must be configured.

To ensure service continuity, all federation partners (represented in your AD FS farm by either relying party trusts or claims provider trusts) must consume the new token signing and token decryption certificates prior to this expiration. We recommend that you begin planning for this process at least 60 days in advance.

Generating a new self-signed certificate manually prior to the end of the grace period

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