Category: DIY Projects

Table of Contents   Overview https://gettobyte.com/wp-content/uploads/2023/12/20240211232811.mp4 So, hello guys, welcome back to the gettobyte YouTube channel. The video you have just seen is the encryption-decryption of an image using Microcontrollers. And that’s what we will implement and learn to do in today’s video. We are going to explore, how to use cryptography technology in microcontrollers. Will be doing the hands-on activity for encryption/decryption of data and images using the ElecronicsV2 Development board. Encryption/Decryption is the cryptography concept and what we are going to achieve on doing so is to know how to use cryptography technology through microcontrollers. For doing Encryption/decryption we are using the AES cryptography algorithm, which is supported in the ElecronicsV2 development board through its SHE standard-based CSEc peripheral. For those who are new to the channel and world of cryptography technology, would recommend watching these videos in the following hierarchical order to get an understanding of cryptography and the technical terms that have been stated just now. What is Cryptography How Cryptography is implemented in Microcontrollers Cryptography basic understanding and terminologies DIY Project Statement What i have done here is take an image, which is an original image and convert it into a string of bytes. After that, wrote software to store that string of bytes in the ElecronicsV2 development board and to do encryption through AES cryptography algorithm on the stored data. On successful encryption, those string of bytes are changed to the encrypted format of data and then that encrypted data is processed to print the encrypted image on color LCD Screen. This is just a basic demo on how to use cryptography technology for securing the original data. Here we are printing encrypted image on the LCD Screen, Same way we can send, encrypted image data to other microcontroller via CAN, LIN or any other protocol. Will be doing this activity too in upcoming blogs. Follow this cryptography technology playlist to explore more such demos. Tools needed Now to achieve this, we will be needing some Hardware and Software tools. In Hardware part, we will be needing: 1) ElecronicsV2 Development Board: BuyLink 2) JlinkV9 Debugger: Debugger to program the ElecronicsV2 Board: Buy Link 3) Double Breadboard: 4) ST7789 Color LCD Screen: LCD screen for printing images ElecronicsV2 Development Board JlinkV9 Debugger Double Breadboard ST7789 Color LCD Screen ElecronicsV2 Development Board ElecronicsV2 is a development board built on NXP Semiconductors S32K144 Microcontroller. S32K144 MCU is an automotive Microcontroller based on ARM Cortex M4 Processor and is part of NXP S32 Automotive Microcontroller family. ElecronicsV2 board which is built on S32K144 MCU has a cryptography peripheral present in it, called as CSEc(Cryptography Security Engine). Which is a SHE standard based security sub-system for doing cryptographic operations and establishing secure communication b/w the ECU and the sensors/actuators of the car. We are gonna use CSEc peripheral of S32K144, to do encryption/decryption of data JlinkV9 Debugger JlinkV9 Debugger is a hardware debugging tool, that is used to program and debug ARM cortex-based Microcontroller or Microprocessor.  You can buy the JlikV9 from this link. ElecronicsV2 has to be connected to Jlink V9 debugger, so that we can program/debug the board. To know about its connection Double Breadboard Tab Content ST7789 Color LCD Screen ST7789 Color LCD Screen In software we will be needing 1) S32 Design Studio IDE: Which is a Desktop Application for programming S32 Family of microcontroller’s/microprocessor. 2) LCD image converter: Desktop application to convert the image into string of bytes S32 Design Studio IDE LCD image converter S32 Design Studio IDE S32 Design Studio is the IDE that is used for development of Embedded Software Development on S32 family of Microcontrollers. IDE stands for Integrated Development Environment, which is used for doing software development on microcontrollers. ElecronicsV2 board has S32K144 Microcontroller, which is part of NXP Semiconductor S32 family of MCU. Thus, we will be using S32 Design Studio for doing Handson activity with ElecronicsV2 boards, S32 Design Studio: is an Integrated Development Environment to write the microcontroller programs for S32 Automotive Microcontrollers. Install the S32 Design Studio software in your PC and in addition to it user also have to download the Real Time Driver (RTD) package for S32K1 MCU. Refer to this blog for full installation guide of S32 Design Studio step-by-step: Getting Started with S32 Design Studio Part 1 | Gettobyte LCD image converter We will use this software to convert the images into string of bytes. How to use this software is mentioned below: Getting Started Okay so now let’s get started with it, i hope so you guys have gathered all the software/hardware that i have mentioned above and connected all the hardware items. We will at first directly gonna do the practical implementation and then going to dwell deep into it. Now for microcontroller programming on ElecronicsV2, I am making a separate GitHub repo, where all the demo examples and peripherals codes would be committed with time. Clone the repo, into your local PC. Link of the repo: Now in the repo, navigate to: Peripheral Drivers-> CSEc , here you will see different examples related to cryptography technology in ElecronicsV2 Development board.  The CSEc_AES_ENC_CBC_ECB_ST7789, is the project for which demo video is shown to you in the starting of the blog. We are going to execute and understand this project. After cloning the project into your PC, you can see the same folder structure as shown to you at GitHub repo at the path Peripheral_Drivers->CSEc: Now open the S32 Design Studio and we have to open the Project CSEc_AES_ENC_CBC_ECB_ST7789 into it.  CSEc_AES_ENC_CBC_ECB_ST7789 is already developed code, so to open it navigate to file->Open Project from File System To know how to open already developed project in S32 Design Studio, refer to this blog: Getting Started with S32 Design Studio Part 1 | Gettobyte. After opening the project, you can see it open in project explorer window of S32 Design Studio. Opening the Cryptography example projects Opening the Cryptography example projects in S32 Design Studio. In this example project you will find