Are digital signatures the same as key exchange?
Excuse me, I'm a bit confused about the differences between digital signatures and key exchange. Could you clarify if they are indeed the same? My understanding is that digital signatures are used to authenticate the sender of a message and ensure its integrity, while key exchange is a process of securely sharing cryptographic keys between two parties. Do they overlap in functionality or are they completely separate concepts? It seems like they might be related but I'm not entirely sure. Could you elaborate on the key distinctions between the two?