Deleting the HMAC key for an External Account Binding credential will permanently the remove the HMAC key its associated External Account Binding credential from Certificate Enrollment Gateway. After the key and the External Account Binding credential are deleted, new ACMEv2 clients will no longer be able to use the key to create new ACMEv2 accounts, and existing ACMEv2 accounts associated with the credential will no longer be able to perform any ACMEv2 operations.

If you want to temporarily prevent an External Account Binding credential from being used by ACMEv2 clients, disable ACMEv2 operations for the credential instead (see Disabling ACMEv2 operations for External Account Binding credentials).

To delete an External Account Binding credential

1. On the Entrust Deployment Manager or Cryptographic Security Platform node hosting the EAB Utility, log in as sysadmin.
2. Enter the following command to launch the EAB Utility:
   sudo eab-util
3. The main menu appears:
   
4. Select Manage EAB credentials, and then press Enter.
   A list of External Account Binding credentials appears. For example:
   
5. Select the credential you want to delete, and then press Enter.
   A Manage EAB Credentials page appears. For example:
   
6. Select Delete EAB Key and press Enter.
   The Delete this ACMEv2 EAB Key page appears.
   
7. Select Delete EAB Key and press Enter.
   The External Account Binding credential is deleted. The list of External Account Binding credentials reappears.