magical/keccak
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

de-unroll Chi loop in roundGeneric

Browse Source 
(reroll? no, that's something else)

makes it more similar to the templatized code in gen.go. this isn't the
optimized code, so performance doesn't matter.
This commit is contained in:
magical 2024-10-05 20:54:51 -07:00
parent 5e1178f8c2
commit 055806bbad
1 changed files with 3 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
keccak.go
View File

@ -26,11 +26,9 @@ func roundGeneric(a *[25]uint64) {
// Chi
for y := 0; y < 5; y++ {
a[y*5+0] = b[y][0] ^ ^b[y][1]&b[y][2]
a[y*5+1] = b[y][1] ^ ^b[y][2]&b[y][3]
a[y*5+2] = b[y][2] ^ ^b[y][3]&b[y][4]
a[y*5+3] = b[y][3] ^ ^b[y][4]&b[y][0]
a[y*5+4] = b[y][4] ^ ^b[y][0]&b[y][1]
for x := 0; x < 5; x++ {
a[y*5+x] = b[y][x] ^ (^b[y][(x+1)%5] & b[y][(x+2)%5])
}
}
}