I’ve written an https server in C++ using cpp-httplib (https://github.com/yhirose/cpp-httplib). My requirement is that it needs to work with pre-shared key and cipher DHE-PSK-AES256-CBC-SHA or DHE-PSK-AES256-CBC-SHA384.
I understand those are TLSv1 ciphers that are considered weak, therefore they are somewhat disabled by default.
Here is the relevant part of my code:

I have a python code which generates signature based on hash string as data. It uses cryptography library to calculate singature based on hash. It uses private key file .pem which contains private key and public key as well. It uses serialization.load_pem_private_key() API to get the private key by reading .pem file. Then using this private key it generates signature using following method of cryptography in python.

I am calling SSL_connect(), checking the return value and printing any error:

I want resources to learn C++ and OpenSSL. There are hardly any tutorials (Windows).

I’m writing a simple application to connect to a server, using OpenSSL. The initial idea was to write a custom BIO method to get information on the hardware socket timestamp via linux’s SO_TIMESTAMPING, but in the meantime I realized that I’m missing something in how to build a proper BIO, so I restarted my understanding process from the scratch.

I am trying to write a set of basic encrypt and decrypt functions in C using OpenSSL and I am losing the last block of my plain text when decrypting. I think it’s probably a padding issue but I am not sure how to diagnose it since I can’t seem to get any information out of the OpenSSL call as to why it’s returning an incorrect length.

On a Windows 10 machine, I’ve set up an OpenSSL 3.3 project via vcpkg, and compiled the example program they provided at https://github.com/openssl/openssl/blob/master/demos/guide/tls-client-block.c

I am trying to implement ecb encryption/decryption using OpenSSL. At present all the setup process seems to return success codes however when it comes to the final decryption it fails.