Using SE05X for crypto operations

Introduction

CHIPCryptoPALHsm_SE05X.cpp file provides the integration of secure element (SE05x) in crypto layer of CHIP stack. By enabling the required directives in CHIPCryptoPALHsm_config.h header file, required crypto operations can be performed using SE05x. By default, the secure element is enabled only for PAKE (Verifier role) operations.

Following table shows the operations supported by secure element.

+-------------------------+-----------+----------------+---------------------------------+------------+----------------------------+ | Operation | Software | Default config | Note | Re-entrant | Directive to enabled in | | | fallback | value | | | CHIPCryptoPALHsm_config.h | +-------------------------+-----------+----------------+---------------------------------+------------+----------------------------+ | SPAKE Verifier | No | Enabled | - | No | ENABLE_HSM_SPAKE_VERIFIER | +-------------------------+-----------+----------------+---------------------------------+------------+----------------------------+ | SPAKE Prover | No | Enabled | - | No | ENABLE_HSM_SPAKE_PROVER | +-------------------------+-----------+----------------+---------------------------------+------------+----------------------------+

Build

• Use the following gn build arguments to enable the secure element in crypto layer,

smcom=\"t1oi2c\" chip_with_se05x=1

Known Limitations:

• None