1.7.6 TDES
Description
Triple Data Encryption Algorithm (TDES) is a symmetric key block cipher proposed in 1981, which applies the DES cipher algorithm three times to each data block. DES key size is 56 bit and 8 bits of error-detection. So key size for TDES is (56+8) 3 = 643 = 192 bits (24 bytes). Usually, three keys are generated using 24 bytes. This demo application demonstrates the functionality of Crypto v4 AES-TDES functions.
Downloading and Building the Application
To clone or download this application from Github, go to the main page of this repository and then click Clone button to clone this repository or download as zip file. This content can also be downloaded using MPLAB® Code Configurator Content Manager.
Path of the application group within the repository is apps/examples/symmetric/tdes/tdes_group.
The following table shows the contents of the project group.
| Project Name | Description |
|---|---|
| pic32ck_sg01_cult.X | MPLABX nonsecure project for PIC32CK SG Curiosity Ultra Development Board |
| pic32ck_sg01_cult_secure.X | MPLABX secure project for PIC32CK SG Curiosity Ultra Development Board |
Setting Up the Hardware
PIC32CK SG Curiosity Ultra Development Board
- Connect the Debug USB port on the board to the computer using a micro USB cable.
- Open a serial monitor with baud rate set to 115200, 8-bit data, no parity, 1 stop bit.
Running the Application
- Open the project group.
- Open the nonsecure version of the project.
- Build and program the application using its IDE and observe the serial COM output.
- The program displays which functions are being demonstrated, and prints if they are completed successfully.