Blake 2#
BLAKE2 is a cryptographic hash function based on Dan Bernstein's ChaCha stream cipher.
| Variant | Block | State | Rounds | Output |
|---|---|---|---|---|
| BLAKE2b | 512 b | 1024 b | 12 | variable |
| BLAKE2s | 256 b | 512 b | 10 | variable |
TODO: adjust JS library for blake2b
Working Principle#
Blake-2b#
Initialization Vector:
IV0 = 0x6A09E667F3BCC908 //Frac(Sqrt(2))
IV1 = 0xBB67AE8584CAA73B //Frac(Sqrt(3))
IV2 = 0x3C6EF372FE94F82B //Frac(Sqrt(5))
IV3 = 0xA54FF53A5F1D36F1 //Frac(Sqrt(7))
IV4 = 0x510E527FADE682D1 //Frac(Sqrt(11))
IV5 = 0x9B05688C2B3E6C1F //Frac(Sqrt(13))
IV6 = 0x1F83D9ABFB41BD6B //Frac(Sqrt(17))
IV7 = 0x5BE0CD19137E2179 //Frac(Sqrt(19))
Test Vectors#
BLAKE2b-512("")
= 786A02F742015903C6C6FD852552D272912F4740E15847618A86E217F71F5419
D25E1031AFEE585313896444934EB04B903A685B1448B755D56F701AFE9BE2CE