Hawkynt

Webino (DarkCrypt)

Block cipher from the DarkCrypt Total Commander plugin built directly on the MD5 compression function (RFC 1321 F/G/H/I, rotate amounts and T-constants unmodified): 64 rounds keyed by 64 independent S-box-derived round words (replacing MD5’s reused message schedule) with additive input / XOR output whitening. 128-bit block, 512-bit key. No public specification exists.

Properties

Property	Value
Category	Block Ciphers
Sub-category	Block Cipher
Security status	🎓 Educational Only
Complexity	Expert
Inventor	Ronald Rivest (MD5 compression function); DarkCrypt keying by Alexander Myasnikov (“Zarya” project)
Year	2009
Origin	🇷🇺 Russia
Source	algorithms/block/darkcrypt-webino.js

Parameters

Parameter	Supported values
Key sizes	64 bytes (512 bits)
Block sizes	16 bytes (128 bits)

Security

Status: 🎓 Educational Only

Known vulnerabilities

Issue	Description	Mitigation
Non-standard, unanalyzed construction	Repurposes the MD5 compression function as a keyed block-cipher round function; this construction has no public cryptanalysis and MD5 itself is broken as a hash. Not recommended for real use.	Use AES or another vetted cipher.

Documentation

• DarkCrypt plugin (Total Commander PlugRing)
• RFC 1321: The MD5 Message-Digest Algorithm

Test vectors

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

Vector 1 — DarkCrypt Webino — zero key/plaintext

Field	Value
key	00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000
input	00000000000000000000000000000000
expected	5508f336d544c3269b7fca2e54b858e2

Vector 2 — DarkCrypt Webino — incrementing key/plaintext

Field	Value
key	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f
input	000102030405060708090a0b0c0d0e0f
expected	d80cd7e3ab47bab627e71791bdc76f43

Vector 3 — DarkCrypt Webino — shifted incrementing key/plaintext

Field	Value
key	0102030405060708090a0b0c0d0e0f10 1112131415161718191a1b1c1d1e1f20 2122232425262728292a2b2c2d2e2f30 3132333435363738393a3b3c3d3e3f40
input	101112131415161718191a1b1c1d1e1f
expected	edf6153e42a3c1eb3edaa3676708cb64

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