We are porting mbedTLS on a iRTOS, ARM9 based processor, 32-bit big endian RISC architecture.
We are experiencing performance issues i.e. encryption and decryption is way slower.
We don’t have hardware accelerator on platform. We have also disabled DEBUG related configurations.
Still the performance is not satisfactory.
Can you please suggest what else can be done to improve decryption and encryption to make them faster, especially decryption?