Abstract: A method and system for secure communication and control in a fueling environment. In one aspect of the present invention, user data is received at a first node associated with a fuel dispenser, encrypted using a public cryptography key, and transmitted to a second node. The second node decrypts the encrypted user data using a private cryptography key associated with the public cryptography key. In another aspect of the present invention, a first message is received at a first node. The first node generates pseudo-random data in response to the first message, encrypts the pseudo-random data using a public cryptography key, and transmits the encrypted pseudo-random data to a second node. The second node decrypts the data using a private cryptography key and transmits the decrypted data to the first node. The first node validates the decrypted data, and processes the first message if the data is valid.