A recent proposal in discussion in the European Union Council would mandate "upload moderation" of encrypted content, something that would break encryption for everyone, Singal's president said.
Many versions of the PuTTY client have a weakness that can generate biased ECDSA nonces and enable an attacker to eventually recover private encryption keys.
A key European Union Parliament committee has rejected proposed language that would allow for mass scanning of encrypted messages.
Senators discussed the controversial act during a Judiciary Committee meeting on Thursday.
Google Workspace's new client-side encryption feature allows enterprises to control their own keys.