Hawkynt

MAGENTA (DarkCrypt)

MAGENTA block cipher as implemented in the DarkCrypt Total Commander plugin: 8-round unbalanced Feistel network with palindromic subkey schedule K1-K2-K3-K4-K4-K3-K2-K1, always operating on a 256-bit key. 128-bit block.

Properties

Property	Value
Category	Block Ciphers
Sub-category	Block Cipher
Security status	Not classified
Complexity	Advanced
Inventor	Michael Jacobson Jr., Klaus Huber (base MAGENTA); DarkCrypt build by Alexander Myasnikov
Year	1998
Origin	🇷🇺 Russia
Source	algorithms/block/darkcrypt-magenta.js

Parameters

Parameter	Supported values
Key sizes	32 bytes (256 bits)
Block sizes	16 bytes (128 bits)

Security

Status: not classified — treat as unverified.

Known vulnerabilities

Issue	Description	Mitigation
Structural weakness	MAGENTA has well-documented structural weaknesses (Biham et al.) allowing key-recovery attacks far faster than brute force; not recommended for any real use.	Use AES or another vetted cipher.

Documentation

• DarkCrypt plugin (Total Commander PlugRing)
• MAGENTA AES Submission

Test vectors

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

Vector 1 — NIST AES round-1 MAGENTA KAT ecb_vk.txt, KEYSIZE=256, I=1

Field	Value
key	8000000000000000000000000000000000000000000000000000000000000000
input	00000000000000000000000000000000
expected	9a199e39c2df1f1c17cea243f8e5147e

Vector 2 — DarkCrypt Magenta — zero key/plaintext

Field	Value
key	0000000000000000000000000000000000000000000000000000000000000000
input	00000000000000000000000000000000
expected	f0f66c085c77ca9433c95e0300c71891

Vector 3 — DarkCrypt Magenta — incrementing key/plaintext

Field	Value
key	000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f
input	000102030405060708090a0b0c0d0e0f
expected	11345de72c2e1159bd4b80712c7b6a65

Vector 4 — DarkCrypt Magenta — shifted incrementing key/plaintext

Field	Value
key	0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f20
input	101112131415161718191a1b1c1d1e1f
expected	c476434c32b0768576a291359fe766cd

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