Loading the zcrypt device driver

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To access Crypto Express (CEX) adapters, the zcrypt device driver must be loaded into the kernel.

The steps described in this topic only apply if your configuration includes a Crypto Express adapter in accelerator or CCA coprocessor mode. If your configuration does not include a Crypto Express adapter in accelerator or CCA coprocessor mode, all RSA operations will be performed by the software.

  1. Load the zcrypt device driver: 
    # modprobe ap
  2. Specify that the zcrypt device driver should be automatically loaded on boot by creating a script called ap.modules in /etc/sysconfig/modules: 
    #!/usr/bin/bash
modprobe ap
  3. Set the appropriate permissions:
    # chmod 770
/etc/sysconfig/modules/ap.modules

    # chown root:root
/etc/sysconfig/modules/ap.modules

For further details about the zcrypt device driver, see Device Drivers, Features, and Commands, SC33-8411.