A family of lightweight tweakable block ciphers designed for resource-constrained environments. Features efficient hardware and software implementations with strong security guarantees. Used in the Romulus AEAD scheme (NIST LWC finalist).
| Property | Value |
|---|---|
| Category | Block Ciphers |
| Sub-category | Tweakable Block Cipher |
| Security status | 🧪 Experimental |
| Complexity | Advanced |
| Inventor | Beierle, Jean, Kölbl, Leander, Moradi, Peyrin, Sasaki, Sasdrich, Sim |
| Year | 2016 |
| Origin | 🌐 International |
| Source | algorithms/block/skinny128.js |
| Parameter | Supported values |
|---|---|
| Key sizes | 16 bytes (128 bits); 32 bytes (256 bits); 48 bytes (384 bits) |
| Block sizes | 16 bytes (128 bits) |
Status: 🧪 Experimental
No vulnerabilities are recorded for this implementation.
3 vectors ship with this algorithm and run in the test suite. Byte values are hexadecimal.
Vector 1 — SKINNY-128-128 Official Test Vector
| Field | Value |
|---|---|
key |
4f55cfb0520cac52fd92c15f37073e93 |
input |
f20adb0eb08b648a3b2eeed1f0adda14 |
expected |
22ff30d498ea62d7e45b476e33675b74 |
Vector 2 — SKINNY-128-256 Official Test Vector
| Field | Value |
|---|---|
key |
009cec81605d4ac1d2ae9e3085d7a1f31ac123ebfc00fddcf01046ceeddfcab3 |
input |
3a0c47767a26a68dd382a695e7022e25 |
expected |
b731d98a4bde147a7ed4a6f16b9b587f |
Vector 3 — SKINNY-128-384 Official Test Vector
| Field | Value |
|---|---|
key |
df889548cfc7ea52d296339301797449 ab588a34a47f1ab2dfe9c8293fbea9a5 ab1afac2611012cd8cef952618c3ebe8 |
input |
a3994b66ad85a3459f44e92b08f550cb |
expected |
94ecf589e2017c601b38c6346a10dcfa |