Skein-512-512 variant used by the DarkCrypt Total Commander plugin. Uses the deprecated pre-tweak (October 2008, NIST round 1) Threefish-512 rotation constants from Skein spec v1.3 Appendix D Table 29 combined with a non-standard key-schedule parity constant (0x5555555555555555 instead of the standard C_240); matches no published Skein test vector.
| Property | Value |
|---|---|
| Category | Hash Functions |
| Sub-category | DarkCrypt Variant |
| Security status | 🎓 Educational Only |
| Complexity | Advanced |
| Inventor | Bruce Schneier, Niels Ferguson, Stefan Lucks, Doug Whiting, Mihir Bellare, Tadayoshi Kohno, Jon Callas, Jesse Walker (Skein); DarkCrypt plugin author (variant constant substitution) |
| Year | 2008 |
| Origin | 🇺🇸 United States |
| Source | algorithms/hash/darkcrypt-skein.js |
| Parameter | Supported values |
|---|---|
| Output sizes | 64 bytes (512 bits) |
Status: 🎓 Educational Only
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 — DarkCrypt Skein empty string
| Field | Value |
|---|---|
input |
(empty) |
expected |
d3f7263a09837f4ce5c8ef70a5ddffac 7b92d6c2ace5a12265bd5b593260a3ff 20d8b4b4c5494e945448b37abb1fc526 f6b46089208fde938d7f23724c4bdfb7 |
Vector 2 — DarkCrypt Skein “abc”
| Field | Value |
|---|---|
input |
616263 |
expected |
c52438c670f3d580dc4cb8d085141a19 643668f82a6ad5f4ecb9292f04b8f38f 1b9dcc8dc4108f72e6ec81fc6cbcd6ed f1867fc4f0beafa692957a4adc1183e3 |
Vector 3 — DarkCrypt Skein incremental 64-byte message
| Field | Value |
|---|---|
input |
000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f |
expected |
df2624902ccc7e042541952126f94750 802b3a1e61fa6e22f8bc981066874095 883455ddd2b0c96a28f1074b4f151829 ffc65415503f504e76f362c312120644 |