Hawkynt

Schwaemm192-192

NIST Lightweight Cryptography finalist using SPARKLE-384 permutation. Balanced variant with 192-bit security level for both key and tag.

Properties

Property	Value
Category	Authenticated Encryption
Sub-category	Authenticated Encryption
Security status	🧪 Experimental
Complexity	Intermediate
Inventor	Christoph Dobraunig, Maria Eichlseder, Florian Mendel, Martin Schläffer
Year	2019
Origin	Not specified
Source	algorithms/aead/sparkle.js

Parameters

Parameter	Supported values
Key sizes	24 bytes (192 bits)
Tag sizes	24 bytes (192 bits)

Capabilities

Flag	Value
SupportsDetached	No

Security

Status: 🧪 Experimental

No vulnerabilities are recorded for this implementation.

Documentation

• NIST LWC Sparkle Specification
• Sparkle Project Website

References

• Official Sparkle Reference Implementation
• rweather/lwc-finalists C Reference (embedded-optimized)

Test vectors

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

Vector 1 — NIST LWC KAT Count=1 (empty PT, empty AD)

Field	Value
key	000102030405060708090a0b0c0d0e0f1011121314151617
nonce	000102030405060708090a0b0c0d0e0f1011121314151617
associatedData	(empty)
input	(empty)
expected	94fabef076b80fa4cae902dc5630a2b7b8a72282a560212c

Vector 2 — NIST LWC KAT Count=2 (empty PT, 1-byte AD)

Field	Value
key	000102030405060708090a0b0c0d0e0f1011121314151617
nonce	000102030405060708090a0b0c0d0e0f1011121314151617
associatedData	00
input	(empty)
expected	8939014b970696487ea3642e508a3620b9919155197eb622

Vector 3 — NIST LWC KAT Count=34 (1-byte PT, empty AD)

Field	Value
key	000102030405060708090a0b0c0d0e0f1011121314151617
nonce	000102030405060708090a0b0c0d0e0f1011121314151617
associatedData	(empty)
input	00
expected	5b3ff82215aaa826be2456b0741301105fe9fb87a3308c5826

Vector 4 — NIST LWC KAT Count=826 (25-byte PT, empty AD)

Field	Value
key	000102030405060708090a0b0c0d0e0f1011121314151617
nonce	000102030405060708090a0b0c0d0e0f1011121314151617
associatedData	(empty)
input	000102030405060708090a0b0c0d0e0f101112131415161718
expected	5b64b794b118330eae30497a35df53c1 2c4097f75fade23cefb8f522a8cb42f6 49be16d7cf2e756cead63214597893e1 c1

---

← All algorithms

This site is open source. Improve this page.