3.4. Configuring Profiles to Enable Renewal
Renewing a certificate regenerates the certificate using the same public key as the original certificate. Renewing a certificate can be preferable to simply generating new keys and installing new certificates; for example, if a new CA signing certificate is created, all of the certificates which that CA issued and signed must be reissued. If the CA signing certificate is renewed, than all of the issued certificates are still valid. A renewed certificate is identical to the original, only with an updated validity period and expiration date.
This section discusses how to set up profiles for renewals.
3.4.1. About Renewal
A renewed certificate is identical to the original certificate, which makes renewing certificates a much simpler and cleaner option for handling the expiration of many kinds of certificates, especially CA signing certificates.
220.127.116.11. The Renewal Process
There are two methods of renewing a certificate. Regenerating the certificate takes the original key, profile, and request of the certificate and recreates a new certificate with a new validity period and expiration date using the identical key. Re-keying a certificate submits a certificate request through the original profile with the same information, so that a new key pair is generated.
A profile that allows renewal is also often accompanied by the
renewGracePeriodConstraintentry. For example:
policyset.cmcUserCertSet.10.constraint.class_id=renewGracePeriodConstraintImpl policyset.cmcUserCertSet.10.constraint.name=Renewal Grace Period Constraint policyset.cmcUserCertSet.10.constraint.params.renewal.graceBefore=30 policyset.cmcUserCertSet.10.constraint.params.renewal.graceAfter=30 policyset.cmcUserCertSet.10.default.class_id=noDefaultImpl policyset.cmcUserCertSet.10.default.name=No Default
18.104.22.168.1. Renewing Using the Same Key
A profile that allows the same key to be submitted for renewal has the
allowSameKeyRenewalparameter set to
uniqueKeyConstraintentry. For example:
policyset.cmcUserCertSet.9.constraint.class_id=uniqueKeyConstraintImpl policyset.cmcUserCertSet.9.constraint.name=Unique Key Constraint policyset.cmcUserCertSet.9.constraint.params.allowSameKeyRenewal=true policyset.cmcUserCertSet.9.default.class_id=noDefaultImpl policyset.cmcUserCertSet.9.default.name=No Default
22.214.171.124.2. Renewal Using a New Key
To renew a certificate with a new key, use the same profile with a new key. Certificate System uses the
subjectDNfrom the user signing certificate used to sign the request for the new certificate.