Allow encrypted keys with user decrypted data

configname: CONFIG_USER_DECRYPTED_DATA

Linux Kernel Configuration
└─>Security options
└─>Allow encrypted keys with user decrypted data
In linux kernel since version 5.2 (release Date: 2019-07-07)  
This option provides support for instantiating encrypted keys using
user-provided decrypted data. The decrypted data must be hex-ascii
encoded.

If you are unsure as to whether this is required, answer N.