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Move compress() into its own module

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Mark Spanbroek 2023-11-13 11:57:55 +01:00 committed by markspanbroek
parent 457b8623be
commit 6fddd3e39e
2 changed files with 12 additions and 8 deletions
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10
poseidon2.nim
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@ -5,22 +5,16 @@ import poseidon2/types
import poseidon2/permutation import poseidon2/permutation
import poseidon2/io import poseidon2/io
import poseidon2/sponge import poseidon2/sponge
import poseidon2/compress
export sponge export sponge
export compress
export toBytes export toBytes
export elements export elements
export types export types
#------------------------------------------------------------------------------- #-------------------------------------------------------------------------------
# 2-to-1 compression
func compress*(a, b : F) : F =
var x = a
var y = b
var z : F ; setZero(z)
permInplace(x, y, z)
return x
func merkleRoot*(xs: openArray[F]) : F = func merkleRoot*(xs: openArray[F]) : F =
let a = low(xs) let a = low(xs)
let b = high(xs) let b = high(xs)

10
poseidon2/compress.nim Normal file
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@ -0,0 +1,10 @@
import ./types
import ./permutation
# 2-to-1 compression
func compress*(a, b : F) : F =
var x = a
var y = b
var z : F = zero
permInplace(x, y, z)
return x