Is it possible to have an encryption algorithm/implementation that has a "backdoor", that also wouldn't introduce flaws into the encryption?
For instance, if you have a master password, once that gets leaked that person now has access to anyone's account.
Would it be possible to have TWO passwords work to decrypt: One for the authorities, and one for the user? That doesn't sound very secure, as now maybe collision are far more likely.
Then, there's also the issue of if that password given to the authorities will be secured (e.g. maybe they keep it in a excel spreadsheet in their gmail account)