secure-login problem in firepower chassis manager CLI

[fly]

I need secure-login in firepower chassis manager CLI

How Can I avoid contact Cisco tac  and get response of  Challende String?

I don't have contract

Thank you 

Tom

FP-MI-LAB# secure-login

Challenge String (Please copy everything between the asterisk lines exclusively):

********************************************************************************
Guj//wYAAADamWA2wwLwPYO87vRQUjX9laGkaJh9WUYGtto2lXqAWZ0987RGWE9T
LU5VTC1TTqQjcGQAAA==
DONE.
********************************************************************************

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