Public key cryptography

Public key cryptography is a secure method of communication that uses two keys: a public key, which anyone can access, and a private key, which is kept secret by the owner. When someone wants to send a secure message, they use the recipient's public key to encrypt it. Only the recipient can decrypt the message using their private key. This system ensures that even if the encrypted message is intercepted, it cannot be read without the private key. Public key cryptography is fundamental for securing online transactions, emails, and digital signatures, making data safe in the digital world.