We are needing to support TLS 1.2 with CA XCOM r12 for z/OS and that requires implementing IBM's System SSL. Will implementing IBM's System SSL be compatible with the other CA XCOM platforms that still use OpenSSL v3?
Implementing IBM's System SSL with CA XCOM r12 for z/OS is compatible with other CA XCOM r11.x platforms that use OpenSSL v3 for its transfers. In other words, IBM's System SSL supports SSLv3 with SSL_METHOD set to ALL for INITIATE_SIDE= and/or RECEIVE_SIDE in the SYSconfigssl.cnf. That is the current default value for the parameter.