Hawkynt

NewDES’96-120 (DarkCrypt)

1996-revised NewDES cipher by Robert Scott (fixed key schedule) as implemented in the DarkCrypt Total Commander plugin: 64-bit block, 120-bit key, same rotor S-box as NewDES but with an extra key-derived XOR term mixed in at three points of the key cycle to remove the related-key weakness.

Properties

Property	Value
Category	Block Ciphers
Sub-category	Block Cipher
Security status	🎓 Educational Only
Complexity	Intermediate
Inventor	Robert Scott; DarkCrypt port by Alexander Myasnikov
Year	1996
Origin	🇷🇺 Russia
Source	algorithms/block/darkcrypt-newdes96.js

Parameters

Parameter	Supported values
Key sizes	15 bytes (120 bits)
Block sizes	8 bytes (64 bits)

Security

Status: 🎓 Educational Only

No vulnerabilities are recorded for this implementation.

Documentation

• DarkCrypt plugin (Total Commander PlugRing)
• NewDES original article (Cryptologia 9(1), 1985)
• newdes.c, revised 3-2-96 (better key expansion), released to the public domain by Robert Scott

Test vectors

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

Vector 1 — DarkCrypt Newdes96 — zero key/plaintext

Field	Value
key	000000000000000000000000000000
input	0000000000000000
expected	a2176054f58b3458

Vector 2 — DarkCrypt Newdes96 — incrementing key/plaintext

Field	Value
key	000102030405060708090a0b0c0d0e
input	0001020304050607
expected	9f20bedbc9eb0801

Vector 3 — DarkCrypt Newdes96 — shifted incrementing key/plaintext

Field	Value
key	0102030405060708090a0b0c0d0e0f
input	1011121314151617
expected	58c0b08406d12b14

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