Educational implementation of Hierocrypt-3, a 128-bit block cipher from Toshiba submitted to NESSIE with nested SPN structure and variable rounds.
| Property | Value |
|---|---|
| Category | Block Ciphers |
| Sub-category | Block Cipher |
| Security status | 🎓 Educational Only |
| Complexity | Intermediate |
| Inventor | Toshiba Corporation |
| Year | 2000 |
| Origin | 🇯🇵 Japan |
| Source | algorithms/block/hierocrypt3.js |
| Parameter | Supported values |
|---|---|
| Key sizes | 16 bytes (128 bits) to 32 bytes (256 bits) in steps of 8 bytes |
| Block sizes | 16 bytes (128 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 — Hierocrypt-3 Test Vector 1
Source: Educational test vector for Hierocrypt-3 cipher
| Field | Value |
|---|---|
key |
0f0e0d0c0b0a09080706050403020100 |
input |
00112233445566778899aabbccddeeff |
expected |
06c42e69000392e7df7c28d40d4419cf |