how to add ssl library to Arduino IDE

In my program, I need to use openssl/rsa.h openssl/pem.h. Now I have the compile error " fatal error: openssl/rsa.h: No such file or directory". So how can I add openssl library to Arduino IDE. When I use gcc g++ to compile, I need to add the compile option -lcrypto, for example, gcc test.c -lcrypto -o test. But as in Arduino IDE, I don't know how it compiles.
So problem is how can I add openssl library to Arduino IDE and make it work correctly?
Can anyone help me?
Very much thanks!

You can use this library:

I have a problem with this libraty, I don't know how to use it. If you get use, you tell me how it is done.

I hope you server help!
Thank you.