implement `crypto.cc` with OpenSSL + fix config loading

  I considered reversing the original `vlong` implementation but
OpenSSL is just simpler, more secure, and most importantly, is
already there. I also made it so the key is now stored in a PEM
file (`tibia.pem`) so it can be easily swapped without re-compiling.

  This was the last piece to build and run a working executable,
except that we now need to implement a query manager for the server
to communicate with. I was able to fix a small problem with loading
the config before hitting the problem with the query manager, which
was expected.

  The next task should be getting a query manager up and running
before starting phase two of upgrading and fixing the server itself.

1 files changed, 15 insertions, 0 deletions

diff --git a/tibia.pem b/tibia.pem
new file mode 100644
index 0000000..83dbe83
--- /dev/null
+++ b/tibia.pem
@@ -0,0 +1,15 @@
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----