Description
During an investigation involving a GNU/Linux server in France, several files unknown to the administrator have been found, including this one:
-rw-r--r-- 1 root root 55K Mar 21 02:45 /tmp/input
This specific file is suspected to be linked to a keylogger, but no binary with keylogging ability appears to have been executed on the server.
Identify the format of this file, then try to decode it to find the password of flag.gpg.
This challenge has been split into three parts:
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