Popular encrypted messaging app Signal is facing criticism over a security issue in its desktop application. Researchers and app users are raising
As mentioned in the comments, plain text keys aren't bad because they are necessary. You have to have at least one plain text key in order to be able to use encryption
This IS bad. Btw they can ask the user to type the password rather than saving it in a plaintext. I can't believe comments on this thread defend Signal...
But can you trust that a user will pick a difficult to break password? They likely will pick something simple to remember but that is not a good password.
The we are just back to essentially having a plaintext password because if the attacker has a good dictionary, it will be easy to crack.