The API changed heavily. New functions arrived, old functions
disappeared and many structures became opaque.
This version of the patch implements pkcs11 signing as follows:
- openssl < 1.0.0: rsa & dsa without engine
- openssl 1.0.x: rsa, dsa & ec with engine
- openssl >= 1.1.0: rsa, dsa & ec without engine
In the operation, we therefore also gain implementation of dsa signing for openssl < 1.0.0 (ec disabled because EC_KEY_METHOD was not yet invented!).
I've given up trying to use a PKEY_ENGINE with openssl 1.1: seems not possible anymore.
I've succeeded compiling the patched xca with openssl 0.9.8n, 1.0.2j and 1.1.0e.
I've successfully tested pkcs11 signing using softhsm with openssl 1.0.2j and 1.1.0e.
The patch also removes gcc7 new warnings.
