Non-standard 64-round chained byte-substitution cipher from the DarkCrypt Total Commander plugin. 64-bit block (8 independently-updated accumulator bytes), 512-bit key. Each round mixes 4 static S-box lookups selected by a key-derived byte stream built with a MARS/RC6-flavoured ARX+S-box mixer followed by a modified RC4-style scheduling pass. No public specification exists.
| Property | Value |
|---|---|
| Category | Block Ciphers |
| Sub-category | Block Cipher |
| Security status | 🎓 Educational Only |
| Complexity | Advanced |
| Inventor | Alexander Myasnikov (DarkCrypt “Zarya” project) |
| Year | 2009 |
| Origin | 🇷🇺 Russia |
| Source | algorithms/block/darkcrypt-kameko.js |
| Parameter | Supported values |
|---|---|
| Key sizes | 64 bytes (512 bits) |
| Block sizes | 8 bytes (64 bits) |
Status: 🎓 Educational Only
| Issue | Description | Mitigation |
|---|---|---|
| Undocumented non-standard design | No public specification or cryptanalysis exists. Not recommended for real use. | Use AES or another vetted cipher. |
3 vectors ship with this algorithm and run in the test suite. Byte values are hexadecimal.
Vector 1 — DarkCrypt Kameko — zero key/plaintext
| Field | Value |
|---|---|
key |
00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 |
input |
0000000000000000 |
expected |
9cd697d1f1d2bc61 |
Vector 2 — DarkCrypt Kameko — incrementing key/plaintext
| Field | Value |
|---|---|
key |
000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f |
input |
0001020304050607 |
expected |
e7550435398a572f |
Vector 3 — DarkCrypt Kameko — shifted incrementing key/plaintext
| Field | Value |
|---|---|
key |
0102030405060708090a0b0c0d0e0f10 1112131415161718191a1b1c1d1e1f20 2122232425262728292a2b2c2d2e2f30 3132333435363738393a3b3c3d3e3f40 |
input |
1011121314151617 |
expected |
8359f00dd5101cf4 |