Hierocrypt-L1, a 64-bit block cipher from Toshiba submitted to NESSIE and recommended by CRYPTREC. Nested SPN structure with 6.5 rounds and a round-trip Feistel key schedule.
| Property | Value |
|---|---|
| Category | Block Ciphers |
| Sub-category | Block Cipher |
| Security status | 🎓 Educational Only |
| Complexity | Advanced |
| Inventor | Toshiba Corporation |
| Year | 2000 |
| Origin | 🇯🇵 Japan |
| Source | algorithms/block/hierocrypt-l1.js |
| Parameter | Supported values |
|---|---|
| Key sizes | 16 bytes (128 bits) |
| Block sizes | 8 bytes (64 bits) |
Status: 🎓 Educational Only
No vulnerabilities are recorded for this implementation.
1 vector ship with this algorithm and run in the test suite. Byte values are hexadecimal.
Vector 1 — NESSIE submission package, C/testvectors.txt
| Field | Value |
|---|---|
key |
4703c87e817842c4ce6b167d43701b76 |
input |
85693846db4c1b34 |
expected |
0cb19444abd24347 |