Hawkynt

LILI-2 (DarkCrypt)

Enlarged successor to LILI-128 used by the DarkCrypt Total Commander plugin: two 128-bit clock-controlled shift registers (LFSRc, LFSRd) with Galois-style table-driven feedback and a 4096-entry nonlinear Boolean function, seeded via a key+IV whitening step and two self-referential 255-bit compression rounds.

Properties

Property	Value
Category	Stream Ciphers
Sub-category	Stream Cipher
Security status	🎓 Educational Only
Complexity	Intermediate
Inventor	Alexander Myasnikov (“Zarya” project, DarkCrypt plugin)
Year	2008
Origin	🇷🇺 Russia
Source	algorithms/stream/darkcrypt-lili2.js

Parameters

Parameter	Supported values
Key sizes	16 bytes (128 bits)
Block sizes	1 byte (8 bits) to 65536 bytes (524288 bits)
Nonce sizes	16 bytes (128 bits)

Security

Status: 🎓 Educational Only

Known vulnerabilities

Issue	Description	Mitigation
Unanalyzed proprietary variant	Non-public enlargement of LILI-128 with no independent cryptanalysis; not recommended for real use.	Use a vetted stream cipher.

Documentation

• DarkCrypt plugin (Total Commander PlugRing)
• LILI Keystream Generator (base LILI-128 design, SAC 2000 paper)

Test vectors

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

Vector 1 — DarkCrypt Lili2 — keystream from incrementing key, zero IV/input

Field	Value
key	000102030405060708090a0b0c0d0e0f
input	00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000
expected	1198a219a3f3ed729500b3a54187f40d bbc9da59ceb3216f2dfbfdb31b70b634 63eba7448eed9b629b622cd545b9a458 eb4f559e145be166fff1f640d7e70612 3a61be369b294af9dd489193b7b0eaf0 eb7dd8deaa3efa309344810abc1db154 57816e31b6ea37b1b2d437d994c52a14 b172af605149529e6ec3a9c28782ac1c

Vector 2 — DarkCrypt Lili2 — incrementing key/plaintext, zero IV

Field	Value
key	000102030405060708090a0b0c0d0e0f
input	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f
expected	1199a01aa7f6eb759d09b9ae4d8afa02 abd8c84adaa6377835e2e7a8076da82b 43ca8567aac8bd45b34b06fe69948a77 db7e67ad206ed751c7c8cc7bebda382d

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