On Windows, this information is stored in the registry:
- CAPKI version 4 32-bit on 32-bit platform, or CAPKI version 4 64-bit on 64-bit platform:
HKEY_LOCAL_MACHINE\SOFTWARE\ComputerAssociates\Shared\CAPKI\Version
- CAPKI version 4 32-bit on 64-bit platform:
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\ComputerAssociates\Shared\CAPKI\Version
- CAPKI version 5 32-bit on 32-bit platform, or CAPKI version 5 64-bit on 64-bit platform:
HKEY_LOCAL_MACHINE\SOFTWARE\ComputerAssociates\Shared\CAPKI5\Version
- CAPKI version 5 32-bit on 64-bit platform:
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\ComputerAssociates\Shared\CAPKI5\Version
It is also possible to locate libcapki.dll file and check its properties:

On Unix/Linux platforms, CAPKI version information can be found in the '.installdb' file located in:
- Version 4:
$CASHCOMP/CAPKI/<unix_version>/<unix_type>/<unix_platform>
- Version 5:
$CASHCOMP/CAPKI/CAPKI5/<unix_version>/<unix_type>/<unix_platform>
Examples:
cat $CASHCOMP/CAPKI/Linux/x86/32/.installdb
CurrentVersion 4.3.0
WAAE1136 4.3.0
SecureSocketAdapter 4.1.6
iGateway 4.3.0
cat $CASHCOMP/CAPKI/CAPKI5/Linux/amd64/64/.installdb
CurrentVersion 5.2.6
ETRDIR 5.2.6