CS-Cipher as implemented in the DarkCrypt Total Commander plugin: 64-bit block, 128-bit key, 12 elementary rounds. Matches the published Stern/Vaudenay S-box and e-digit round constants.
| Property | Value |
|---|---|
| Category | Block Ciphers |
| Sub-category | Block Cipher |
| Security status | 🎓 Educational Only |
| Complexity | Intermediate |
| Inventor | Jacques Stern, Serge Vaudenay (base CS-Cipher); DarkCrypt variant by Alexander Myasnikov |
| Year | 1998 |
| Origin | 🇫🇷 France |
| Source | algorithms/block/darkcrypt-cscipher.js |
| Parameter | Supported values |
|---|---|
| Key sizes | 16 bytes (128 bits) |
| Block sizes | 8 bytes (64 bits) |
Status: 🎓 Educational Only
| Issue | Description | Mitigation |
|---|---|---|
| Not selected for NESSIE | Submitted to the NESSIE project but not selected; later cryptanalysis found weaknesses in reduced-round variants. | Use AES or another vetted cipher. |
4 vectors ship with this algorithm and run in the test suite. Byte values are hexadecimal.
Vector 1 — NESSIE submission test vectors for CS-Cipher, 128-bit key, set 1 vector 0
| Field | Value |
|---|---|
key |
80000000000000000000000000000000 |
input |
0000000000000000 |
expected |
b3ceaa7e54954091 |
Vector 2 — DarkCrypt Cscipher — zero key/plaintext
| Field | Value |
|---|---|
key |
00000000000000000000000000000000 |
input |
0000000000000000 |
expected |
e7557c23ea2074bb |
Vector 3 — DarkCrypt Cscipher — incrementing key/plaintext
| Field | Value |
|---|---|
key |
000102030405060708090a0b0c0d0e0f |
input |
0001020304050607 |
expected |
434a4eaec4abf667 |
Vector 4 — DarkCrypt Cscipher — shifted incrementing key/plaintext
| Field | Value |
|---|---|
key |
0102030405060708090a0b0c0d0e0f10 |
input |
1011121314151617 |
expected |
3b99b12ffcb158e4 |