Impact of libssl on CentOS login

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    Today, an interesting phenomenon has been found , Record here .

     The event occurred in CentOS7.8 Virtual machine .

     In order to test openssl The state secret algorithm of , Compiled it specially openssl1.1.1 Version of , And modified /usr/lib64 Under the libssl.so and libcrypto.so Soft connection . No problem in use , But today, after restart, I found , After entering the password in the login interface , Back to the login interface again , And then infinite loops , I can't log in all the time .

    Go to the character interface , Can log in normally , Then think back to the operation of the previous two days , So the libssl.so The soft connection of the changed back , Found that you can log in normally .

    The specific reason is not clear , Probably GNOME Used in the login process ssl The library of .