128-bit block, 512-bit key cipher from the DarkCrypt Total Commander plugin. Sixteen-round ARX network over four 32-bit words: a branching addition diffusion layer followed by keyed rol16/shl6-xor-shr8 mixing stages and a substitution-table-driven nonlinear layer. RC6-style key schedule driven by a fixed 32x256 substitution table.
| Property | Value |
|---|---|
| Category | Block Ciphers |
| Sub-category | Block Cipher |
| Security status | 🎓 Educational Only |
| Complexity | Intermediate |
| Inventor | Alexander Myasnikov (DarkCrypt / Zarya) |
| Year | 2009 |
| Origin | 🇷🇺 Russia |
| Source | algorithms/block/darkcrypt-ixchel.js |
| Parameter | Supported values |
|---|---|
| Key sizes | 64 bytes (512 bits) |
| Block sizes | 16 bytes (128 bits) |
Status: 🎓 Educational Only
| Issue | Description | Mitigation |
|---|---|---|
| Obscure unanalyzed cipher | Non-standard proprietary design with no public cryptanalysis. | 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 Ixchel - zero key/plaintext
| Field | Value |
|---|---|
key |
00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 |
input |
00000000000000000000000000000000 |
expected |
1a37059bac0edd65d4cbb1187d9ce7fd |
Vector 2 — DarkCrypt Ixchel - incrementing key/plaintext
| Field | Value |
|---|---|
key |
000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f |
input |
000102030405060708090a0b0c0d0e0f |
expected |
e511c3628a58b5a5371ebe39ba7598a7 |
Vector 3 — DarkCrypt Ixchel - shifted incrementing key/plaintext
| Field | Value |
|---|---|
key |
0102030405060708090a0b0c0d0e0f10 1112131415161718191a1b1c1d1e1f20 2122232425262728292a2b2c2d2e2f30 3132333435363738393a3b3c3d3e3f40 |
input |
101112131415161718191a1b1c1d1e1f |
expected |
c8fb1d33d8140b25e43fa6a4ed603962 |