Created
April 11, 2017 03:41
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A test of P256 C backend
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{-# LANGUAGE BangPatterns #-} | |
-- % ghc -Wall -threaded -O A.hs | |
-- % ./A +RTS -N2 | |
-- | |
-- illegal hardware instruction | |
-- segmentation fault | |
module Main where | |
import Control.Concurrent | |
import Crypto.PubKey.ECC.P256 | |
import qualified Data.ByteString.Char8 as B | |
import Data.Hex | |
repeatN :: Int | |
repeatN = 10000 | |
main :: IO () | |
main = do | |
var0 <- newEmptyMVar | |
var1 <- newEmptyMVar | |
_ <- forkIO $ server var0 var1 | |
client var0 var1 | |
client :: MVar Point -> MVar Point -> IO () | |
client var0 var1 = loop repeatN | |
where | |
loop 0 = return () | |
loop !n = do | |
clientPrivate <- scalarGenerate | |
let clientPublic = toPoint clientPrivate | |
putMVar var0 clientPublic | |
serverPublic <- takeMVar var1 | |
let clientSecret = pointDh clientPrivate serverPublic | |
B.putStrLn $ hex clientSecret | |
loop (n - 1) | |
server :: MVar Point -> MVar Point -> IO () | |
server var0 var1 = loop repeatN | |
where | |
loop 0 = return () | |
loop !n = do | |
clientPublic <- takeMVar var0 | |
serverPrivate <- scalarGenerate | |
let serverPublic = toPoint serverPrivate | |
putMVar var1 serverPublic | |
let serverSecret = pointDh serverPrivate clientPublic | |
B.putStrLn $ hex serverSecret | |
loop (n - 1) |
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