Hawkynt

HIGHT

HIGh security and light weigHT block cipher designed for low-resource devices. Uses only ADD/XOR operations without multiplication, making it suitable for constrained environments like RFID and sensor networks.

Properties

Property	Value
Category	Block Ciphers
Sub-category	Block Cipher
Security status	🎓 Educational Only
Complexity	Intermediate
Inventor	Deukjo Hong, Jaechul Sung, Seokhie Hong, Jongin Lim, Sangjin Lee, and others
Year	2006
Origin	🇰🇷 South Korea
Source	algorithms/block/hight.js

Parameters

Parameter	Supported values
Key sizes	16 bytes (128 bits)
Block sizes	8 bytes (64 bits)

Security

Status: 🎓 Educational Only

No vulnerabilities are recorded for this implementation.

Documentation

• HIGHT: A New Block Cipher Suitable for Low-Resource Device
• Crypto++ HIGHT Implementation

References

• openluopworld Lightweight Block Ciphers - HIGHT (C)
• kmarquet/bloc Reference Implementations (C)

Test vectors

3 vectors ship with this algorithm and run in the test suite. Byte values are hexadecimal.

Vector 1 — Crypto++ HIGHT Test Vector #1

Field	Value
key	88e34f8f081779f1e9f394370ad40589
input	d76d0d18327ec562
expected	e4bc2e312277e4dd

Vector 2 — Crypto++ HIGHT Test Vector #2

Field	Value
key	2923be84e16cd6ae529049f1f1bbe9eb
input	b3a6db3c870c3e99
expected	23cad1a3cddf7eab

Vector 3 — Crypto++ HIGHT Test Vector #3

Field	Value
key	245e0d1c06b747deb3124dc843bb8ba6
input	1f035a7d0938251f
expected	52bd91bb26f8ed99

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