How the Edge SWG SGOS encrypts TLS/SSLkeyrings private keys, in particular which cryptography algorithm is used
The private key is never "exposed". If the system admin need to read it, then in the CLI "enable", "conf-t" mode the "security private-key-display" command has to be executed, example:
Thanks to the above the keyrings private keys can be exposed in the "show config" command, either "unencrypted" or encrypted thanks to "aes256-cbc" or "aes128-cbc" algorithms.
Recapping: the available cryptography algorithms used to expose the SSL keyrings private keys are "aes256-cbc" and "aes128-cbc".
Refer to SGOS 7.4 admin manual "# (config) security private-key-display" chapter.