The cryptography working group within the Internet Engineering Task Force (IETF) standards organization has chosen the Endress+Hauser-developed CPace protocol as a recommended method for use in internet standards.
CPace (composable password-authenticated connection establishment) refers to an Endress+Hauser-based enhancement of the BSI PACE protocol that adapts the PACE approach to the limited resources of small field instruments. The PACE protocol (password-authenticated connection establishment) is a password-based authentication and encryption method developed by the German Federal Office for Information Security (BSI) for use with the new German ID card.