rsec/ssfs_keypath is a SAP Parameter attribute which is used to control Directory for the key files of the Secure Storage in the File System ( information. This is available within R/3 SAP systems depending on the version and release level.
Below is the standard documentation available and a few details of the attributes values .
Path where the Secure Storage in the File System (ABAP) stores the key
files, without trailing separator character.
The key files must be maintained only by executable "rsecssfx".
Changes to the key files outside of this program causes the data in the
secure storage to become unreadable, with the consequence that the
system cannot start.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.