CryptoAuthentication Library (CAL)

Overview

The MPLAB® Code Configurator CryptoAuth Library allows quick and easy configuration and code generation for security, cryptography, authentication, and encryption applications on PIC and AVR devices.

Features

• For a comprehensive list of features, refer to the CryptoAuthLib Github Page

Generated Files

This driver generates the following files:

• CAL Initialization Files - Functions and prototypes used to initialize the CryptoAuth chips
  • ./mcc_generated_files/CryptoAuthenticationLibrary/CryptoAuth_init.h
  • ./mcc_generated_files/CryptoAuthenticationLibrary/CryptoAuth_init.c
  • ./mcc_generated_files/CryptoAuthenticationLibrary/cryptoauthlib_config.h
• CAL Framework (atca) - Functions and Prototypes that form the basic operating models of CAL
• CAL Certification (atcacert) - Functions and prototypes used to perform certification I/O with CryptoAuth chips and perform certificate manipulation in memory
• CAL Basic Files (atca_basic)- Functions and Prototypes that provide a simple API to use CryptoAuth chips
• CAL Software Crypto (atca_crypto_sw) - Functions and Prototypes taht provide a software implementation of various crypto algorithms
• CAL Host (atca_host) - Functions and Prototypes to provide host-side cryptographic functionality for an ATECC client device
• CAL JWT (atca_jwt) - Functions and Prototypes to provide methods for signing and verifying JSON Web Token (JWT) tokens
• CAL HAL - Functions and Prototypes to define the hardware abstraction layer (HAL) for communicating with a CryptoAuth device

Changelog

All notable changes to this project will be documented in this file.

[5.11.0] - 2025-08-05

Bug Fixes

• CC_CALIB-860 :- CAL 5.11.0 dev branches have multiple build warnings
• CC_CALIB-849 :- Add curve options to TA101
• CC_CALIB-798 :- Code Compilation Error- Missing ascii_kit_host.h file in generated code

New Features and Improvements

• CC_CALIB-821 :- At Trust Anchor Library compatibility table in documentation

[5.10.0] - 2025-03-04

New Features and Improvements

• CC_CALIB-872 :- Update CAL to firmware version 3.7.6

[5.9.0] - 2024-12-12

New Features and Improvements

• CC_CALIB-873 :- Export device supported curves