It looks like this LPP has been all over the board.  It is definitely gone at V5R4, now part of the base OS.  It was available on V5R1 to V5R3 just not as part of the Standard or Keyed media.
Took a stab a collecting the info and the history over on the wiki.
http://wiki.midrange.com/index.php/5722-AC3
Brian Dolinar.
  "Chris Bipes" <chris.bipes@xxxxxxxxxxxxxxx> wrote in message 
news:mailman.638.1210199492.12545.midrange-l@xxxxxxxxxxxxxxx
  Well it is not chargeable nor is it included.  You have to ask very
  nicely for it.  But that was as of V5R3.  I am not sure if it is
  included with 5.4 and I think it is included with 6.1
   
  Chris Bipes
  Director of Information Services
  CrossCheck, Inc.
  -----Original Message-----
  From: midrange-l-bounces@xxxxxxxxxxxx
  [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jerry Draper
  Sent: Wednesday, May 07, 2008 4:25 PM
  To: Midrange Systems Technical Discussion
  Subject: IBM Cryptographic Access Provider product, 5722-AC3 (128-bit)
  Is IBM Cryptographic Access Provider product, 5722-AC3 (128-bit) a
  chargeable Licensed Program Product?
  or
  Is IBM Cryptographic Access Provider product, 5722-AC3 (128-bit)
  included in the base i5/OS?
As an Amazon Associate we earn from qualifying purchases.