Hawkynt

TinyJAMBU-256 AEAD

Lightweight authenticated encryption finalist in NIST LWC. Features 256-bit keyed permutation with 4-word state, 96-bit nonce, and 64-bit authentication tag. Optimized for constrained environments.

Properties

Property	Value
Category	Authenticated Encryption
Sub-category	Lightweight Cryptography
Variant	256
Security status	🧪 Experimental
Complexity	Intermediate
Inventor	Hongjun Wu, Tao Huang
Year	2019
Origin	🌐 International
Source	algorithms/aead/tinyjambu.js

Parameters

Parameter	Supported values
Key sizes	32 bytes (256 bits)
Tag sizes	8 bytes (64 bits)

Capabilities

Flag	Value
SupportsDetached	No

Security

Status: 🧪 Experimental

No vulnerabilities are recorded for this implementation.

Documentation

• NIST LWC Finalist Specification
• NIST Lightweight Cryptography Project

References

• rweather/TinyJAMBU Official-Author-Adjacent Reference (C)
• rweather/lwc-finalists C Reference (embedded-optimized)

Test vectors

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

Vector 1 — TinyJAMBU-256: Empty message, empty AAD (Count 1)

Field	Value
key	000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f
nonce	000102030405060708090a0b
aad	(empty)
input	(empty)
expected	9b04ed416f7d7f56

Vector 2 — TinyJAMBU-256: Empty message with 1-byte AAD (Count 2)

Field	Value
key	000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f
nonce	000102030405060708090a0b
aad	00
input	(empty)
expected	a68d4c7689096558

Vector 3 — TinyJAMBU-256: Empty message with 4-byte AAD (Count 5)

Field	Value
key	000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f
nonce	000102030405060708090a0b
aad	00010203
input	(empty)
expected	90f1ace82c4c5ffe

Vector 4 — TinyJAMBU-256: 1-byte message, empty AAD (Count 34)

Field	Value
key	000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f
nonce	000102030405060708090a0b
aad	(empty)
input	00
expected	0fe90a41b4aa18329f

Vector 5 — TinyJAMBU-256: 1-byte message with 1-byte AAD (Count 35)

Field	Value
key	000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f
nonce	000102030405060708090a0b
aad	00
input	00
expected	20bb303279c2739ce5

Vector 6 — TinyJAMBU-256: 4-byte message with 4-byte AAD (Count 137)

Field	Value
key	000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f
nonce	000102030405060708090a0b
aad	00010203
input	00010203
expected	0243655595b82f3b398f3d96

Vector 7 — TinyJAMBU-256: 8-byte message with 32-byte AAD (Count 297)

Field	Value
key	000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f
nonce	000102030405060708090a0b
aad	000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f
input	0001020304050607
expected	a5628df713d4316218a127fc09046f81

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