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DeFiDude
73 lines
2.8 KiB
Markdown
73 lines
2.8 KiB
Markdown
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Arduino Cryptography Library
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============================
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This distribution contains a libraries and example applications to perform
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cryptography operations on Arduino devices. They are distributed under the
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terms of the MIT license.
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The [documentation](http://rweather.github.io/arduinolibs/crypto.html)
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contains more information on the libraries and examples.
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This repository used to contain a number of other examples and libraries
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for other areas of Arduino functionality but most users are only interested
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in the cryptography code. The other projects have been moved to a
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separate [repository](https://github.com/rweather/arduino-projects) and
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only the cryptography code remains in this repository.
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For more information on these libraries, to report bugs, or to suggest
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improvements, please contact the author Rhys Weatherley via
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[email](mailto:rhys.weatherley@gmail.com).
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Recent significant changes to the library
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-----------------------------------------
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Apr 2023:
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Brad Bock contributed a RNG back end for newer AVR chips that uses
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Custom Configurable Logic (CCL) to generate an unstable clock source
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instead of using the CPU watchdog as on older AVR chips.
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Feb 2023:
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NIST has selected ASCON as the winner of the Lightweight Cryptography
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Competition. This repository has an older implementation of ASCON-128
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which should be compatible with the final winning version. Let me know
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if you have any issues.
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The winning version has additional AEAD cipher and hashing modes that
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this repository does not implement yet. However, my companion repository
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[ASCON Suite](https://github.com/rweather/ascon-suite) does implement
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all of the additional modes.
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NIST is in the process of finalising the standard. Once the standard is
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published, I will move Ascon128 from CryptoLW to Crypto and implement the
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extra modes in this repository. In the meantime, please use ASCON Suite if
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you need support for ASCON in your Arduino project.
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Mar 2022:
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* HMAC-BLAKE2b and HMAC-BLAKE2s were giving incorrect results when the
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message being authenticated was zero-length.
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Jan 2022:
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* All-in-one hmac() function in Hash.h for simplified HMAC computations.
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* New API for the HKDF hash-based key derivation function.
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* Make the ESP32 version of AES less dependent on include file locations.
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Apr 2018:
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* Acorn128 and Ascon128 authenticated ciphers (finalists in the CAESAR AEAD
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competition in the light-weight category).
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* Split the library into Crypto (core), CryptoLW (light-weight), and
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CryptoLegacy (deprecated algorithms).
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* Tiny and small versions of AES for reducing memory requirements.
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* Port the library to ESP8266 and ESP32.
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* Make the RNG class more robust if the app doesn't call begin() or loop().
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Nov 2017:
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* Fix the AVR assembly version of Speck and speed it up a little.
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* API improvements to the RNG class.
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