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vrde/hash256.code

Last active July 10, 2019 14:24
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hash256.code
import "hashes/sha256/256bitPadded.code" as sha256
import "utils/pack/unpack128.code" as unpack128
import "utils/pack/pack128.code" as pack128
def main(private field a, private field b) -> (field[2]):
field[128] a128 = unpack128(a)
field[128] b128 = unpack128(b)
h = sha256([...a128, ...b128])
return [pack128(h[0..128]), pack128(h[128..256])]
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