A method for securely transferring digital content between two electronic devices, comprising an activation phase performed by a management center for generating a common network key, calculating for each device an encrypted network key with a unique device key and transmitting to each device the encrypted network key and a unique device value involving said device key and a unique device secret value, a keys recovering performed by each device for obtaining the device key from both the device value and the secret value of said device and obtaining the network key from both the encrypted network key and the previously obtained device key, and an operating phase performed by each device for generating or obtaining a random value, generating a final key by encrypting the random value with the network key and using said final key for encrypting/decrypting said content.