[gray_charger]

> You could make cryptographic protocol where all chats have an extra user in them whose key is unable to be decrypted or revealed unless there is a warrant provided.

...that's called a backdoor.

[charcircuit]

A publically documented part of a system that explicitly states its purpose is not a backdoor.

[Tyrannosaur]

A publicly documented part of a system that explicitly states that its purpose is to compromise encryption and privacy may not technically be a "backdoor", but that's a distinction without a difference.

https://www.justsecurity.org/16503/security-front-doors-vs-b...