What cryptographic protocols are used by XCOM 12.0 for z/OS when performing secure/SSL transfers?
XCOM™ Data Transport® for z/OS
It depends on the cryptographic software used for the encryption, and is also influenced by the specification of SSL_METHOD parameter.
The cryptographic software is determined by default parameter SSL_VERSION (which is normally specified in the TYPE=CONFIG defaults member).
The SSL_METHOD parameter is specified in the SSL configuration file in use for the transfer (which in turn is set by default parameter XCOM_CONFIG_SSL)
NOTE:
With later XCOM 12.0 maintenance, use of OpenSSL was initially deprecated and with LU07625 is now not supported: XCOM™ Data Transport® for z/OS 12.0 > Release Notes > Obsolete Features