Methods and systems for secure communication between two or more appliances

A method of securing communication between a first domestic appliance and a second domestic appliance through a remote server, the method comprising:

• receiving a first appliance ID and a first public key of the first domestic appliance;
• receiving a second appliance ID and a second public key of the second domestic appliance;
• transmitting the first appliance ID and the first public key to the second domestic appliance;
• transmitting the second appliance ID and the second public key to the first domestic appliance;
• generating an encryption key at the first and second appliances using the first and second public keys;
• and
• directing use of the encryption key in intra-appliance communication over a secondary connection channel,
• wherein the encryption key is generated independently at both the first appliance and the second appliance,
• wherein, at the first appliance, the generated encryption key is based on the first public key, a first private key of the first appliance, and the second public key, and
• wherein, at the second appliance, the generated encryption key is based on the second public key, a second private key of the second appliance, and the first public key.