CryptoLW-RK (community library)

Summary

Light-weight algorithms for the Arduino Cryptography Library This library provides implementations of various "light-weight" cryptography algorithms, designed for resource-constrained environments.

Example Build Testing

Library Read Me

This content is provided by the library maintainer and has not been validated or approved.

CryptoLW-RK

Port of the lightweight rweather Arduino Cryptography Library (CryptoLW) for Particle

• Original library Github
• Documentation

Tests

1-TestAcorn

Tested on a Photon running Device OS 1.0.0:

State Size ... 64

Test Vectors:
Acorn128 #1 ... Passed
Acorn128 #2 ... Passed
Acorn128 #3 ... Passed
Acorn128 #4 ... Passed
Acorn128 #5 ... Passed

Performance Tests:
Acorn128 #4 SetKey ... 94.36us per operation, 10597.37 per second
Acorn128 #4 Encrypt ... 0.38us per byte, 2638304.89 bytes per second
Acorn128 #4 Decrypt ... 0.40us per byte, 2480331.74 bytes per second
Acorn128 #4 AddAuthData ... 0.43us per byte, 2348968.66 bytes per second
Acorn128 #4 ComputeTag ... 68.21us per operation, 14661.25 per second

2-TestAscon

Tested on a Photon running Device OS 1.0.0:

State Size ... 72

Test Vectors:
Ascon128 #1 ... Passed
Ascon128 #2 ... Passed
Ascon128 #3 ... Passed
Ascon128 #4 ... Passed
Ascon128 #5 ... Passed

Performance Tests:
Ascon128 #4 SetKey ... 33.40us per operation, 29940.12 per second
Ascon128 #4 Encrypt ... 2.22us per byte, 450450.45 bytes per second
Ascon128 #4 Decrypt ... 2.21us per byte, 453219.27 bytes per second
Ascon128 #4 AddAuthData ... 2.15us per byte, 465403.77 bytes per second
Ascon128 #4 ComputeTag ... 34.54us per operation, 28951.10 per second

3-TestSpeck

Tested on a Photon running Device OS 1.0.0:

State Sizes:
Speck ... 288
SpeckSmall ... 80
SpeckTiny ... 48

Speck Test Vectors:
Speck-128-ECB Encryption ... Passed
Speck-128-ECB Decryption ... Passed
Speck-192-ECB Encryption ... Passed
Speck-192-ECB Decryption ... Passed
Speck-256-ECB Encryption ... Passed
Speck-256-ECB Decryption ... Passed

SpeckSmall Test Vectors:
Speck-128-ECB Encryption ... Passed
Speck-128-ECB Decryption ... Passed
Speck-192-ECB Encryption ... Passed
Speck-192-ECB Decryption ... Passed
Speck-256-ECB Encryption ... Passed
Speck-256-ECB Decryption ... Passed

SpeckTiny Test Vectors:
Speck-128-ECB Encryption ... Passed
Speck-192-ECB Encryption ... Passed
Speck-256-ECB Encryption ... Passed

Speck Performance Tests:
Speck-128-ECB Set Key ... 16.98us per operation, 58890.73 per second
Speck-128-ECB Encrypt ... 0.48us per byte, 2090738.03 bytes per second
Speck-128-ECB Decrypt ... 0.44us per byte, 2275507.01 bytes per second

Speck-192-ECB Set Key ... 17.45us per operation, 57305.28 per second
Speck-192-ECB Encrypt ... 0.49us per byte, 2033967.25 bytes per second
Speck-192-ECB Decrypt ... 0.45us per byte, 2213552.48 bytes per second

Speck-256-ECB Set Key ... 18.04us per operation, 55433.29 per second
Speck-256-ECB Encrypt ... 0.50us per byte, 1981915.03 bytes per second
Speck-256-ECB Decrypt ... 0.46us per byte, 2155578.91 bytes per second

SpeckSmall Performance Tests:
Speck-128-ECB Set Key ... 14.11us per operation, 70878.25 per second
Speck-128-ECB Encrypt ... 1.88us per byte, 532527.44 bytes per second
Speck-128-ECB Decrypt ... 0.99us per byte, 1009909.74 bytes per second

Speck-192-ECB Set Key ... 15.11us per operation, 66182.21 per second
Speck-192-ECB Encrypt ... 1.97us per byte, 507939.73 bytes per second
Speck-192-ECB Decrypt ... 1.03us per byte, 973176.81 bytes per second

Speck-256-ECB Set Key ... 16.09us per operation, 62140.36 per second
Speck-256-ECB Encrypt ... 2.05us per byte, 487742.42 bytes per second
Speck-256-ECB Decrypt ... 1.07us per byte, 938526.51 bytes per second

SpeckTiny Performance Tests:
Speck-128-ECB Set Key ... 0.51us per operation, 1979414.09 per second
Speck-128-ECB Encrypt ... 1.88us per byte, 532435.29 bytes per second

Speck-192-ECB Set Key ... 0.61us per operation, 1650437.37 per second
Speck-192-ECB Encrypt ... 1.96us per byte, 509071.01 bytes per second

Speck-256-ECB Set Key ... 0.74us per operation, 1348072.26 per second
Speck-256-ECB Encrypt ... 2.05us per byte, 487709.72 bytes per second

The flash usage is quite reasonable for the Speck example:

Memory use:
text       data        bss        dec        hex    filename
11068        108       1820      12996       32c4    /workspace/target/workspace.elf

Original Read Me

Arduino Cryptography Library

This distribution contains a libraries and example applications to perform cryptography operations on Arduino devices. They are distributed under the terms of the MIT license.

The documentation contains more information on the libraries and examples.

This repository used to contain a number of other examples and libraries for other areas of Arduino functionality but most users are only interested in the cryptography code. The other projects have been moved to a separate repository and only the cryptography code remains in this repository.

For more information on these libraries, to report bugs, or to suggest improvements, please contact the author Rhys Weatherley via email.

Recent significant changes to the library

Apr 2018:

• Acorn128 and Ascon128 authenticated ciphers (finalists in the CAESAR AEAD competition in the light-weight category).
• Split the library into Crypto (core), CryptoLW (light-weight), and CryptoLegacy (deprecated algorithms).
• Tiny and small versions of AES for reducing memory requirements.
• Port the library to ESP8266 and ESP32.
• Make the RNG class more robust if the app doesn't call begin() or loop().

Nov 2017:

• Fix the AVR assembly version of Speck and speed it up a little.
• API improvements to the RNG class.

Original License

/*
* Copyright (C) 2012 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/

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