Skein-512-512 as used by the DarkCrypt Total Commander plugin: Skein version 1.1, the SHA-3 round 1 definition, with the original Threefish-512 rotation constants (replaced in version 1.2) and key schedule parity constant 0x5555555555555555 (replaced by C240 in version 1.3). Matches the published version 1.1 test vectors and known-answer tests, not those of the final Skein 1.3.
| 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 |
| 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.
7 vectors ship with this algorithm and run in the test suite. Byte values are hexadecimal.
Vector 1 — Skein 1.1 Appendix C.2 - Skein-512-512, 1 byte
| Field | Value |
|---|---|
input |
ff |
expected |
8fca8d2705f99a56904308a4004c64ef b668818b58b0895bf7296a2c5a54f930 1483d622c4a5aec855ac30087e1eb0e8 3940906e7b055d70d446c8d285f27f01 |
Vector 2 — Skein 1.1 Appendix C.2 - Skein-512-512, 64 bytes
| Field | Value |
|---|---|
input |
fffefdfcfbfaf9f8f7f6f5f4f3f2f1f0 efeeedecebeae9e8e7e6e5e4e3e2e1e0 dfdedddcdbdad9d8d7d6d5d4d3d2d1d0 cfcecdcccbcac9c8c7c6c5c4c3c2c1c0 |
expected |
0fc42e100b2cd0b0c69f39383f9d2d17 af6cf74e2aa8d4e2d91cbf94a59935a3 123b7f9250f982224bf0c3e190be10ab 41add8c1e35cbec4b1b3c35dbba5869c |
Vector 3 — Skein 1.1 Appendix C.2 - Skein-512-512, 128 bytes
| Field | Value |
|---|---|
input |
fffefdfcfbfaf9f8f7f6f5f4f3f2f1f0 efeeedecebeae9e8e7e6e5e4e3e2e1e0 dfdedddcdbdad9d8d7d6d5d4d3d2d1d0 cfcecdcccbcac9c8c7c6c5c4c3c2c1c0 bfbebdbcbbbab9b8b7b6b5b4b3b2b1b0 afaeadacabaaa9a8a7a6a5a4a3a2a1a0 9f9e9d9c9b9a99989796959493929190 8f8e8d8c8b8a89888786858483828180 |
expected |
0f019e7c1849167cecb9a0d8f1b00ccd 5b14159c5aaee449dab55a1bc6c85103 e8378454912e46af63067950f863043c cfa3699887a2577337caa66531bdbf9e |
Vector 4 — Skein 1.1 ShortMsgKAT_512 - Len = 0
| Field | Value |
|---|---|
input |
(empty) |
expected |
d3f7263a09837f4ce5c8ef70a5ddffac 7b92d6c2ace5a12265bd5b593260a3ff 20d8b4b4c5494e945448b37abb1fc526 f6b46089208fde938d7f23724c4bdfb7 |
Vector 5 — Skein 1.1 ShortMsgKAT_512 - Len = 8
| Field | Value |
|---|---|
input |
cc |
expected |
a37fa71a4bff725887fd1e3c087a0d9c 427e475962d4d4abfa45f098ec16a18c 1e2f957c0ec343f7e910ec30e34aecfa 703f6d2a334250e5446cdce71a99c222 |
Vector 6 — DarkCrypt Skein “abc”
| Field | Value |
|---|---|
input |
616263 |
expected |
c52438c670f3d580dc4cb8d085141a19 643668f82a6ad5f4ecb9292f04b8f38f 1b9dcc8dc4108f72e6ec81fc6cbcd6ed f1867fc4f0beafa692957a4adc1183e3 |
Vector 7 — DarkCrypt Skein incremental 64-byte message
| Field | Value |
|---|---|
input |
000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f |
expected |
df2624902ccc7e042541952126f94750 802b3a1e61fa6e22f8bc981066874095 883455ddd2b0c96a28f1074b4f151829 ffc65415503f504e76f362c312120644 |