Public Keys

A public key is a cryptographic tool that allows someone to securely send you information or verify your identity. Think of it like a digital lock: you share the lock (public key) openly, so others can lock messages or verify your signature. Only you have the special key (private key) to unlock or sign, ensuring confidentiality and authenticity. This system underpins secure online communications, such as emails, banking, and digital signatures, by enabling safe data exchange without exposing your private key.