A system and method for controlling manufacturing of one or more items may include providing a first 3D design representation, the first 3D design representation usable by a manufacturing device for manufacturing the item; encrypting the first 3D design representation to produce an encrypted 3D design representation; associating a set of tokens with the encrypted 3D design representation and providing the encrypted 3D design representation. A method or system may include obtaining a token and including the token in a request to manufacture the item; using the token to determine whether or not to provide a decryption key; and, if determining to provide the decryption key, using the decryption key to produce a second 3D design representation, the second 3D design representation usable by a manufacturing device for manufacturing the item.