If you want to develop a secure, connected device that can also require work efficiently then developer chooses a microcontroller that contains particular hardware and software features. These things can go from genuine random number generators through secure libraries. Let’s see here few tips for the hardware and software that developer should think about how to secure their microcontroller in embedded system.
Tip #1 – Include a True Random Number Generator (TRNG)
A developer includes a true random number for the requirement of many encryption and communication processes such as primary vector for the encryption. A few years ago, many developers trusted on pseudo-random numbers and other methods to create these values. This TRANG helps to develop easily remove difficult methods to produce a random number and use this number in hardware that works fast, efficient and can offer a truly random number.
Tip #2 – Usage a Cryptographic Accelerator (AES, SHA, etc)
Running cryptographic programming libraries can be really handling intensive on a resource-constrained device. Searching for a microcontroller that inserts a hardware cryptographic accelerator has provided some advantages, likes, accelerating encryption and decryption along with decreasing code space. When you are adding security to an ongoing microcontroller, cryptographic accelerators are a must be require.
Tip #3 – Consider Arm TrustZone for Cortex-M
Arm TrustZone is one type of new hardware features for real-time processors. Arm TrustZone is being inserted in the two processors, one is the Cortex-M23 and the other is the Cortex-M33 processors. This TrustZone helpful to a developer and separates their software into secure and non-secure worlds. Generally, TrustZone can be used to generate a Root of Trust, security updates, and secure boot among several other use cases. TrustZone basically builds and inner firewall for secure processing.
Tip #4 – Use Secure Internal Storage
If you need to secure microcontroller to use and include secure internal storage. This internal storage is generally used to store public and private keys and guarantee that work basic information can’t be gotten to by application components that shouldn’t utilize them.
Tip #5 – Don’t Avoid the Memory Protection Unit (MPU)
The main benefit of memory protection unit (MPU) can be utilized to isolate threads and keep them working in their own memory spaces. If a thread tries to use the memory area outside its own space or another thread tries to use its space, an exemption will be thrown. Having MCU’s to secure memory can ensure that rebel code can’t able to get access to the system.
Tip #6 – Examine if the MCU is Secure Element Ready
Secure components can be exceptionally helpful to developers inspired by making a safe device. Ensure that either a secure component is included into the processor or that a secure element can definitely be added to the system.
Tip #7 – Review the Available Secure Libraries
There are several different hardware features that need to include in the microcontroller. Also, we need to ensure that sure with an elegant, secure microcontroller, there is software to run all the security features. This indicates that for a chose secure processor, ensure that there are secure boot libraries, secure firmware refresh libraries and other cryptographic libraries accessible.
With all these various hardware equipment parts won’t really ensure that you will have a protected system. In any case, they do guarantee that the right devices are accessible to correctly secure a microcontroller in an effective and compelling way.