Build failure against openssl 1.1.1g about 2cca

[nicolas314]

Yep. Between OpenSSL 1.0 and 1.1, the APIs have fundamentally changed so 2cca.c would need to be rewritten pretty much from scratch. As indicated in the README file, I have decided to maintain the Python version (2cca.py) instead as command-line openssl appears more stable.
Would you be more interested in a C-based version than a Python one?

[romanholidaypancakes]

Yep. Between OpenSSL 1.0 and 1.1, the APIs have fundamentally changed so 2cca.c would need to be rewritten pretty much from scratch. As indicated in the README file, I have decided to maintain the Python version (2cca.py) instead as command-line openssl appears more stable.
Would you be more interested in a C-based version than a Python one?

yes, we need C-based version.
or directly use openssl3 for development is a better choice： OpenSSL 3.0 Has Been Released!

[nicolas314]

I will have a look at openssl 3.0, though you will understand that having bit bitten hard by incompatible changes in the API without any warning whatsoever, I am reluctant to link against that library.
This is stuff I do in my spare time, and I stopped using OpenVPN a while ago now. Until this is done, pull requests are most welcome!