Original Rijndael specification generalized to an 8-column state: 256-bit block, 256-bit key, 14 rounds, ShiftRow offsets {0,1,3,4} (per the original Rijndael proposal, not AES’s fixed {0,1,2,3}). As implemented in the DarkCrypt Total Commander plugin.
| Property | Value |
|---|---|
| Category | Block Ciphers |
| Sub-category | Block Cipher |
| Security status | 🎓 Educational Only |
| Complexity | Intermediate |
| Inventor | Joan Daemen, Vincent Rijmen |
| Year | 1998 |
| Origin | 🇧🇪 Belgium |
| Source | algorithms/block/darkcrypt-rijndael256.js |
| Parameter | Supported values |
|---|---|
| Key sizes | 32 bytes (256 bits) |
| Block sizes | 32 bytes (256 bits) |
Status: 🎓 Educational Only
| Issue | Description | Mitigation |
|---|---|---|
| Non-standard block size | 256-bit-block Rijndael was not selected as AES and has seen far less cryptanalytic scrutiny than the standardized 128-bit-block variant. | Use standard AES for interoperable, well-analyzed deployments. |
4 vectors ship with this algorithm and run in the test suite. Byte values are hexadecimal.
Vector 1 — Extended Rijndael KAT (Gladman), ecbvk88.txt: 256-bit block, 256-bit key, variable-key test 1
| Field | Value |
|---|---|
key |
0000000000000000000000000000000000000000000000000000000000000000 |
input |
0000000000000000000000000000000000000000000000000000000000000000 |
expected |
c6227e7740b7e53b5cb77865278eab0726f62366d9aabad908936123a1fc8af3 |
Vector 2 — DarkCrypt Rijndael256 — zero key/plaintext
| Field | Value |
|---|---|
key |
0000000000000000000000000000000000000000000000000000000000000000 |
input |
0000000000000000000000000000000000000000000000000000000000000000 |
expected |
c6227e7740b7e53b5cb77865278eab0726f62366d9aabad908936123a1fc8af3 |
Vector 3 — DarkCrypt Rijndael256 — incrementing key/plaintext
| Field | Value |
|---|---|
key |
000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f |
input |
000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f |
expected |
623d2bd4ca3796dc3d02ecf2f37fb637fd3da58509cebb67ab9265b04db51e7d |
Vector 4 — DarkCrypt Rijndael256 — shifted incrementing key/plaintext
| Field | Value |
|---|---|
key |
0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f20 |
input |
101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f |
expected |
97601be3b33cf4e6c9babb4601e25b0495026f30a0485dedb25169fed35933d9 |