Starting to use OpenSSL

Question

I want to use SSL in my cross platform program. I decided to use OpenSSL.

I have OpenSSL installed, and at this point I am looking through the code and documentatio

Answer 1

The very rough guide is:

• Create a new SSL_CTX with SSL_CTX_new();
• (server only) Load the certificate with SSL_CTX_use_certificate_file();
• (server only) Load the private key with SSL_CTX_use_PrivateKey_file();
• Establish the network connection;
• Create a new SSL with SSL_new();
• Set the file descriptor of the SSL to that of your network connection with SSL_set_fd();
• (client only) Call SSL_connect();
• (server only) Call SSL_accept().

Thereafter use SSL_read() and SSL_write() to read and write from the connection, and finish with SSL_shutdown(). The SSL_CTX can be re-used to create SSL objects for many simultaneous sessions.