@optio, thank you for your time and your reply. After your reply I had another question and this is what I've found. Thanks again!
When using Galois/Counter Mode (GCM) ciphers with OpenVPN, authentication is performed using the Galois Message Authentication Code (GMAC), which is integrated into the encryption process. Therefore, no separate digest or authentication mechanism is used; it is inherently included in the GCM encryption. As a result, the authentication parameter in the OpenVPN configuration (auth) for GCM ciphers is always set to null.
When using Galois/Counter Mode (GCM) ciphers with OpenVPN, authentication is performed using the Galois Message Authentication Code (GMAC), which is integrated into the encryption process. Therefore, no separate digest or authentication mechanism is used; it is inherently included in the GCM encryption. As a result, the authentication parameter in the OpenVPN configuration (auth) for GCM ciphers is always set to null.
Statistics: Posted by ros44 — Wed Feb 14, 2024 12:03 am