> No...
Why ?
> in this scenario the attacker has the victim’s new private key
You don't want to keep your private key in cleartext on your email provider servers, do you ?
208 karma · joined August 12, 2018
Why ?
> in this scenario the attacker has the victim’s new private key
You don't want to keep your private key in cleartext on your email provider servers, do you ?
For example, if an attacker gains access to a victim email account, they could send to their contacts a "trusted" key (as explained above) and then use it to send signed documents to the victim's contacts.
This would defeat an adversary "paranoid" enough to check a key signature, but not paranoid enough to obtain a clear explaination/confirmation of why the key changed...