Series 3 Security Overview#

Note: This section replaces AN1504: Series 3 Security Overview. Further updates to this application note will be provided here.

This application note provides a high level overview of the security features included in Series 3 devices.

Security features on Series 3 devices described in this document are implemented through the Secure Engine.

Key Points#

  • Basic overview of Series 3 security features

  • Authenticated execute in-place (AXiP)

  • Mailbox/Debug challenge interface

  • Automatic tamper responses

  • Secure debug lock/unlock

  • Secure boot/RTSL

  • Secure key storage

  • Secure identity

  • Cryptographic hardware acceleration

  • DPA/DFA countermeasures