Computer software for facilitating trusted computing; computer software for managing access to a private key; computer software for facilitating storing a private key; computer software managing a private key in a computer network computer software to enable hardware protection of a user's private keys; computer software for protecting private keys, including crypto currency private keys; computer software to facilitate a trusted execution environment (TEE); application program interface (API) software for device identification; computer software to facilitate secure transactions via computer and communication networks, including in the fields of banking, Bitcoin transactions, private messaging, and mobile applications; computer software, namely, software for authentication; computer software for authenticating computing devices, including mobile devices; computer software and hardware for security; computer software for use in safeguarding access to digital content, including cryptocurrency, audio, video, text, and multimedia files; computer software to facilitate authentication of an authorized device or user of a computer system