Add forward secrecy

[TadavomnisT]

Jea creating a protocol is not easy :3

Forward secrecy is a property of cryptographic protocols that ensures that if an attacker gains access to a party's private key after the fact, they cannot use it to decrypt past communications. This means that even if an attacker intercepts and records encrypted traffic, and subsequently gains access to a party's private key (e.g., through a successful cyberattack or by judicial order), they will not be able to use that private key to decrypt past communications that occurred before the key was compromised.

Forward secrecy is achieved by using a different set of temporary keys for each session, instead of using a single long-term key. These temporary keys are generated on-the-fly for each communication session, and are discarded at the end of the session. Since these temporary keys are not stored anywhere, even if an attacker gains access to a party's private key, they cannot use it to decrypt past communication sessions which used different temporary keys.

One popular protocol that uses forward secrecy is the Diffie-Hellman key exchange, which allows two parties to establish a shared secret key without transmitting it in plain text. The temporary keys used in the Diffie-Hellman key exchange are unique for each session, ensuring that even if an attacker gains access to one of the parties' private keys, they cannot use it to decrypt past communication sessions.

Forward secrecy provides an additional layer of security to cryptographic protocols, as it ensures that past communications remain secure even in the event of a future key compromise.

I do need something like that in SeRCH...