Reflecting on PGP and DNM messaging security: This may be a stupid question but since vendors post their public keys on their profiles, couldn't LE just grab the key then use it to decrypt messages? I guess I don't understand how encrypting a message keeps it secure when the key to break the PGP is available for anyone to see. What am I not understanding? Sorry if this is a stupid question.
You encrypt with the public key and the vendor decrypts with his private key. The public key can only be used for encrypting, not decrypting.