OpenSSL Static Library too big, any alternative or way to reduce its size?

Question

I have used pre-build static libs of OpenSSL 1.0, but it makes my binary too big, (increase its size by about 800Kb in release mode).

I do not need most of the featu

Answer 1

OpenSSL does have a large number of compile-time options to control what features are built. I believe that the SSL functions use BIOs underneath, so you'll still need those, but there's a lot of other functionality you can probably go without (like ciphers you won't use, envelope encryption, S/MIME support...).

I'm not sure how much it will reduce the binary size by, but it's worth a try.