Managing Operations › CA Tape Encryption Open Intercept Installation Logic

CA Tape Encryption Open Intercept Installation Logic

CA Tape Encryption intercepts tape open processing to determine whether a tape data set should be encrypted or decrypted. One of three sets of open intercepts will be used to intercept tape opens:

• CA Tape Encryption Option for Third Party TMS intercepts
• CA TLMS Tape Management System intercepts
• CA 1 Tape Management System intercepts

The CA 1 and CA TLMS intercepts are normally installed by CA Common Services at system Initial Program Load (IPL). These intercepts check if CA Tape Encryption is active when an open is intercepted and call CA Tape Encryption.

The CA Tape Encryption Option for Third Party TMS intercepts are installed by CA Tape Encryption only when the CA 1 and CA TLMS intercepts are not installed and after trying to determine if the CA 1 or CA TLMS intercepts will not be installed. These checks are necessary to prevent multiple sets of open intercepts from being installed which could result in system abends or other problems.

When CA Tape Encryption is started, it checks to see if the CA 1 or CA TLMS open intercepts are installed. If the open intercepts are found, no additional checking is required.

If no open intercepts are found, a query is made to CA Common Services to see if the LMP keys for the CA Tape Encryption Option for CA 1, the CA Tape Encryption Option for CA TLMS, and the CA Tape Encryption Option for Third Party TMS are installed. One of the following occurs when this happens:

• If more than one of these options returns a key found response, it is assumed an Enterprise License or an Emergency Key Generator (EKG) is in effect which activates all CA products. Since CA Tape Encryption cannot determine what environment it will be running in, the following BESnI0053Q Write To Operator With Reply (WTOR) will be issued and the start-up will wait for a response.

  BESnI0053Q Will CA 1 or CA TLMS be used on this system? Reply (Y)es or (N)o
  

  A reply of Y will indicate that the CA Tape Encryption Option for Third Party TMS intercepts should not be installed because CA 1 or CA TLMS will be started. Until one of them is started, tape mounts cannot be intercepted. CA Tape Encryption will issue the following message and continue the start-up:

  BESnI0054W No intercepts are active
  

  A reply of N will indicate that the CA Tape Encryption Option for Third Party TMS intercepts should be installed because CA 1 or CA TLMS will not be started. CA Tape Encryption will issue the following message and continue the start-up:

  BESnI0051I Installing CA Tape Encryption Third Party intercepts
  

• If either the CA Tape Encryption Option for CA 1 or the CA Tape Encryption Option for CA TLMS is found, then CA Tape Encryption will issue the following message and continue the start-up:

  BESnI0054W No intercepts are active
  

  Note: Until CA 1 or CA TLMS is started, tape opens cannot be intercepted.

• If none of the CA Tape Encryption options are found, then a query is made to CA Common Services to see if the LMP keys for the CA 1 product and the CA TLMS product are installed and one of the following occurs:
  • If both product LMP keys are found, then the following BESnI0053Q WTOR is issued and the start-up waits for a response:

    BESnI0053Q Will CA 1 or CA TLMS be used on this system? Reply (Y)es or (N)o
    

  • If only one of the product LMP keys is found, then the following message is issued and the start-up continues:

    BESnI0054W No intercepts are active
    

    Note: Until CA 1 or CA TLMS is started, tape opens cannot be intercepted.

  • If none of the CA 1 or CA TLMS product LMP keys are found, then the CA Tape Encryption Option for Third Party TMS intercepts are installed, the following message is issued, and the start-up continues:

    BESnI0051I Installing CA Tape Encryption Third Party intercepts
    

If your site uses CA 1 or CA TLMS, you should always make sure that the appropriate tape management system software is started prior to starting CA Tape Encryption. This will prevent the BESnI0053Q WTOR from being issued and ensure that tape opens can be intercepted.