Binding data to a network in the presence of an entity

A cryptographic system comprising:

• a memory to store encrypted data;
• and
• a processing device, operatively coupled to the memory, to:
• identify a public key for a communications device in response to an indication of a presence of the communications device on a network;
• determine a first intermediate public key in view of the public key and in view of an acquisitioning public key, the acquisitioning public key is associated with the encrypted data;
• receive, from the communications device, a second intermediate public key in view of the first intermediate public key;
• and
• produce an encryption key to decrypt the encrypted data in view of at least the second intermediate public key.

A non-transitory computer readable storage medium, having instructions stored therein, which when executed by a processing device, cause the processing device to:

• access, by the processing device, a communications device on a network;
• identify a communications device public key associated with the communications device;
• produce an encryption key in view of the communications device public key and in view of a provisioning public key associated with data;
• encrypt the data using the encryption key;
• and
• associate the communications device public key with the data that is encrypted.