Undocumented 64-bit block cipher from the DarkCrypt Total Commander plugin: 16 rounds of an in-place, byte-at-a-time S-box mixing network where each byte position is XORed with a value folded from all other (partially updated) bytes of the block. No public specification is known.
| Property | Value |
|---|---|
| Category | Block Ciphers |
| Sub-category | Block Cipher |
| Security status | 🎓 Educational Only |
| Complexity | Intermediate |
| Inventor | Alexander Myasnikov (DarkCrypt / “Zarya” project) |
| Year | 2013 |
| Origin | 🇷🇺 Russia |
| Source | algorithms/block/darkcrypt-snappy.js |
| Parameter | Supported values |
|---|---|
| Key sizes | 16 bytes (128 bits) |
| Block sizes | 8 bytes (64 bits) |
Status: 🎓 Educational Only
| Issue | Description | Mitigation |
|---|---|---|
| Undocumented/unanalyzed design | No public cryptanalysis exists for this cipher. | 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 Snappy — zero key/plaintext
| Field | Value |
|---|---|
key |
00000000000000000000000000000000 |
input |
0000000000000000 |
expected |
e81e19d19331b4cd |
Vector 2 — DarkCrypt Snappy — incrementing key/plaintext
| Field | Value |
|---|---|
key |
000102030405060708090a0b0c0d0e0f |
input |
0001020304050607 |
expected |
c214d81749ead2d4 |
Vector 3 — DarkCrypt Snappy — shifted incrementing key/plaintext
| Field | Value |
|---|---|
key |
0102030405060708090a0b0c0d0e0f10 |
input |
1011121314151617 |
expected |
31632512e2b31965 |