256-bit block cipher based on the SHA-256 hash function compression function. Selected by NESSIE for standardization. Uses 64 rounds with SHA-256 operations.
| Property | Value |
|---|---|
| Category | Block Ciphers |
| Sub-category | Block Cipher |
| Security status | 🎓 Educational Only |
| Complexity | Intermediate |
| Inventor | Helena Handschuh, David Naccache |
| Year | 2000 |
| Origin | 🇫🇷 France |
| Source | algorithms/block/shacal-2.js |
| Parameter | Supported values |
|---|---|
| Key sizes | 16 bytes (128 bits) to 64 bytes (512 bits) |
| Block sizes | 32 bytes (256 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 Set 1, vector 0 (512-bit key)
| Field | Value |
|---|---|
key |
80000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 |
input |
0000000000000000000000000000000000000000000000000000000000000000 |
expected |
361ab6322fa9e7a7bb23818d839e01bddafdf47305426edd297aedb9f6202bae |