SSL/TLS ensures authenticity by utilizing digital certificates, public key cryptography, and certificate authorities (CA).
When a user connects to a website secured by SSL/TLS, the server presents a digital certificate containing its public key to the user’s web browser. The public key is then used to encrypt data sent to the server.
The digital certificate is issued by a trusted third-party organization known as a certificate authority (CA). The CA verifies the identity of the server owner and includes information such as the server’s name and public key in the certificate. This means that the user can trust that they are communicating with the intended server and not an imposter.
Public key cryptography is used to ensure that only the intended recipient can decrypt encrypted data. The server’s public key encrypts the data before it is sent, and only the server’s private key can decrypt it. This means that if an attacker intercepts the encrypted data, they will not be able to read it.
In summary, SSL/TLS ensures authenticity through the use of digital certificates verified by trusted third-party certificate authorities and public key cryptography to encrypt and decrypt data.
