STRUSTSSO2 and SSL certificates explanation

Procedure
Download the public-key certificate of the Portal Server
Use the Keystore Administration functions of the SAP NetWeaver Administrator to download the verify.der file from the portal.
Import public-key certificate of the Portal Server to the component system's certificate list and add the Portal Server to the ACL of the component system
Both of these steps can be performed with transaction STRUSTSSO2, which is an extended version of transaction STRUST. For detailed documentation on transaction STRUST, see the Web Application Server documentation under Security → Trust Manager.
1. In the SAP system, start transaction STRUSTSSO2.
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[@rajaniduba6106]

Hello Sir, I think PSE means Personal Secure Environment which has complete environment secure data in encrypted format it will maintain under /usr/sap/SID/D/sec directory at OS level.
Please correct me if I am wrong. Thank you for valuabl content for all your videos sir.