How does public key security work?
The basic idea behind public key security is that every user has two mathematical encryption keys, a public key and a private key. A user’s public key is accessible to anyone, but the private key is accessible only to the user. When someone needs to encrypt traffic before sending it to a specific user, the encryption process begins by downloading the user’s public key. The public key is used to encrypt the packets, but is useless for decrypting it. The packets can only be decrypted by the corresponding private key, which is only held by the recipient. .
