Hawkynt

DAGINDA (DarkCrypt)

SHACAL-2-derived block cipher from the DarkCrypt Total Commander plugin: the SHA-256 compression round (Sigma0/Sigma1, Ch, Maj, all 64 standard round constants) used as a keyed permutation with additive pre-whitening and XOR post-whitening from the key, driven by a bespoke 64-round ARX/S-box key schedule instead of SHA-256’s message expansion. 256-bit block, 512-bit key.

Properties

Property	Value
Category	Block Ciphers
Sub-category	Block Cipher
Security status	🎓 Educational Only
Complexity	Advanced
Inventor	Alexander Myasnikov (“Zarya” project)
Year	2009
Origin	🇷🇺 Russia
Source	algorithms/block/darkcrypt-daginda.js

Parameters

Parameter	Supported values
Key sizes	64 bytes (512 bits)
Block sizes	32 bytes (256 bits)

Security

Status: 🎓 Educational Only

Known vulnerabilities

Issue	Description	Mitigation
Non-standard variant	SHACAL-2-derived compression permutation with a custom key schedule and additional whitening; unanalyzed and not recommended for real use.	Use AES or another vetted cipher.

Documentation

• DarkCrypt plugin (Total Commander PlugRing)
• SHACAL-2 (related construction)

Test vectors

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

Vector 1 — DarkCrypt Daginda — zero key/plaintext

Field	Value
key	00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000
input	0000000000000000000000000000000000000000000000000000000000000000
expected	2140ee25d494fbe23f145469a9a30033bce58ed95e72461384d0cacb360bc0f3

Vector 2 — DarkCrypt Daginda — incrementing key/plaintext

Field	Value
key	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f
input	000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f
expected	eeeaa053171679f88686f8f140b6a7dec3f9f1a3594a9ef69aa5ac7117cd73f2

Vector 3 — DarkCrypt Daginda — shifted incrementing key/plaintext

Field	Value
key	0102030405060708090a0b0c0d0e0f10 1112131415161718191a1b1c1d1e1f20 2122232425262728292a2b2c2d2e2f30 3132333435363738393a3b3c3d3e3f40
input	101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f
expected	fb7303ab49c92fe2c7f019af4bff99c8383275946ff5e45cfa47e6d137d9285c

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