In an example, there is disclosed an electronic apparatus, comprising: a hardware-encoded internal private key; and one or more logic elements comprising a key generation engine to: receive an third-party key; and operate on the third-party key and the internal private key to generate a hardware-generated dynamic identifier (HGDI). There is also disclosed a method of providing an HGDI engine, and one or more computer-readable mediums having stored thereon executable instructions for providing an HGDI.