# Manage CRL Profiles

A Certificate Revocation List (CRL) is a record of revoked certificates. Whenever a certificate is issued, it is only valid for a certain period of time, as determined by the Certification Authority. Typically, this period is one to two years. Whenever a certificate is presented for authentication, its validity period is checked against the current time to ensure that it has not expired.

The 'CRL Profiles' section allows administrators to create CRL profiles that officers can use to generate a Certificate Revocation List.

After logging in to emCA, go to the dashboard page and click on "Manage Profiles", then select "CRL Profiles" to view the following page.

<figure><img src="https://2804668976-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOwstGDJbR4yGRTr2aEFp%2Fuploads%2FFk9BLS7ZaknmxHsSrMR7%2Fimage.png?alt=media&#x26;token=1a4c2271-c3d6-4cec-8bfe-df75e27a754e" alt=""><figcaption></figcaption></figure>

**New CRL Profile**

To create a new profile, click on 'New Profile' which will display the CRL profile creation screen.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               &#x20;

<figure><img src="https://2804668976-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOwstGDJbR4yGRTr2aEFp%2Fuploads%2F8huUL5uGJRSFtjVWSZk9%2Fimage.png?alt=media&#x26;token=f246709a-5bc0-49bc-9cf2-130569cc1cb5" alt=""><figcaption></figcaption></figure>

Please provide a unique and recognizable "Profile name" on the page that is currently being displayed.

Please specify the number of days for the validity period, which will be used by the associated CRL profile.&#x20;

The default value for the Custom CRL number field is set to 1. This field serves as a continuously increasing sequence number within a specific CRL scope, helping users track CRL successions.

Users can choose to enable automatic CRL generation and set the frequency in the designated field.

<figure><img src="https://2804668976-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOwstGDJbR4yGRTr2aEFp%2Fuploads%2F5EfPy2rUx0mAI13F56q6%2Fimage.png?alt=media&#x26;token=e362c323-bfd0-4b74-b66d-7151c6a8b2ea" alt="" width="324"><figcaption></figcaption></figure>

**CRL Extensions**

To select an extension for the 'CRL Extensions' section, simply click on the 'Use' checkbox next to it. In case you want to mark a certain section as 'Critical', you can do so for the chosen extensions. Below is a list of available extensions to choose from.

<figure><img src="https://2804668976-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOwstGDJbR4yGRTr2aEFp%2Fuploads%2Fi3G8Mv6EmVdpdJMFRhOZ%2Fimage.png?alt=media&#x26;token=4e350c77-ec5b-4dd0-b8c6-7aa4e53b2903" alt=""><figcaption></figcaption></figure>

The "Issuer alternate name" extension (optional) allows additional identities to be associated with the issuer of CRL

![](https://2804668976-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOwstGDJbR4yGRTr2aEFp%2Fuploads%2FUSbHIWg2xmnWRdHFoMtO%2Fimage.png?alt=media\&token=be83f269-a0bb-4f63-be6d-2d681430411f)

The "Authority Information Access" extension (optional) contains information about the issuer of the certificate. This extension helps to fetch immediate certificates from the issuing certification authority

![](https://2804668976-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOwstGDJbR4yGRTr2aEFp%2Fuploads%2FBkjpKN2jju9CEPY5GqDg%2Fimage.png?alt=media\&token=45747313-cba1-487d-9a03-67ca5c97a0e7)

"Delta CRL" extension (optional) contains all non-expired certificates that have been revoked since the last base CRL was published.

![](https://2804668976-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOwstGDJbR4yGRTr2aEFp%2Fuploads%2Fwi3vVeNeSlAg53xeRlH1%2Fimage.png?alt=media\&token=5c03051a-9e06-4a75-8dc1-855025b67297)

The Issuing Distribution Point (IDP) is a field in a Certificate Revocation List (CRL) profile that specifies the location where the CRL is published.

![](https://2804668976-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOwstGDJbR4yGRTr2aEFp%2Fuploads%2FqpxtgssU9EAmYelajS5A%2Fimage.png?alt=media\&token=1130507e-0923-48b0-baba-c7d0a04d73b9)

The "Authority Key Identifier" extension (mandatory) identifies the public key corresponding to the private key used to sign a certificate. It is selected by default as mandatory.

![](https://2804668976-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOwstGDJbR4yGRTr2aEFp%2Fuploads%2FaVwJj3hJtnv0bvoxFkxR%2Fimage.png?alt=media\&token=5dea5025-eb3b-4585-bd7e-c4270edf0850)

After selecting all the necessary details, click on "Proceed" to access the next page. You'll then need to authenticate the save action, using your Administrator token. Once authenticated, press "Authenticate" and then click on "Confirm" to finalize the certificate profile.

<figure><img src="https://2804668976-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOwstGDJbR4yGRTr2aEFp%2Fuploads%2FlM5ZNh1Ozct2A8DP2Cck%2Fimage.png?alt=media&#x26;token=d6ea0ab0-8d23-4e42-be1a-1d58f9e9bbe2" alt=""><figcaption></figcaption></figure>

Clicking 'View all' directs the Admin to 'CRL Profiles'. Clicking '+ New' leads to new certificate profile creation.

The profile for the generated certificate will be updated on the 'CRL Profiles' page.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                &#x20;