1.2 Digital Signature Algorithms

This example application shows how to use the Crypto v4 library's API for Digital Signature Algorithm functions.

Description

This demo application tests the functionality and performance the Crypto v4 library's API DSA hardware and software functions. Hardware and software selection is located inside the Crypto library in MCC. This demo application tests both compressed and uncompressed keys. Compressed keys only work with software.

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 content manager by following these instructions.

Path of the application within the repository is apps/crypto_examples/dsa/firmware.

To build the application, refer to the following table and open the project using its IDE.

Project NameDescription
dsa.XMPLABX project for PIC32CZ CA9X Curiosity Ultra Development Board
Note: Enable the following algorithms in MCC. DSA hardware API for HSM requires SHA2-224, 256, and 512 to be enabled. HSM boards use Crypto_DigiSign_Ecdsa_SignData and Crypto_DigiSign_Ecdsa_VerifyData functions and pass the crypto_Hash_Algo_E parameter.

Setting Up the Hardware

The following table shows the target hardware for the application projects.

Project NameBoard
dsa.XPIC32CZ CA9X Curiosity Ultra Development Board

PIC32CZ CA9X Curiosity Ultra Development Board

  • Connect the ICD5 to the debugger port on the board and computer using a type c cable.
  • 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

  1. Build and Program the application using MPLABX IDE v6.20
  2. Observe the serial COM output