yggdrasil (empty) → 0.1.0.0
raw patch · 12 files changed
+1348/−0 lines, 12 filesdep +QuickCheckdep +basedep +cryptonitesetup-changed
Dependencies added: QuickCheck, base, cryptonite, hspec, memory, mtl, transformers, yggdrasil
Files
- ChangeLog.md +8/−0
- LICENSE +661/−0
- Setup.hs +2/−0
- src/Yggdrasil/Adversarial.hs +114/−0
- src/Yggdrasil/Distribution.hs +98/−0
- src/Yggdrasil/ExecutionModel.hs +158/−0
- src/Yggdrasil/Functionalities.hs +110/−0
- src/Yggdrasil/HList.hs +51/−0
- tests/ExecTests.hs +35/−0
- tests/FunctTests.hs +49/−0
- tests/Spec.hs +11/−0
- yggdrasil.cabal +51/−0
+ ChangeLog.md view
@@ -0,0 +1,8 @@+# Revision history for yggdrasil++## 0.1.0.0 -- 2018-09-10++* Provide an UC-like, strictly typed execution model.+* Provide randomness distributions.+* Provide a typed model for arbitrary adversaries.+* Implement random oracles, crs, and signatures.
+ LICENSE view
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+ Setup.hs view
@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain
+ src/Yggdrasil/Adversarial.hs view
@@ -0,0 +1,114 @@+{-# LANGUAGE AllowAmbiguousTypes #-}+{-# LANGUAGE DataKinds #-}+{-# LANGUAGE ExplicitNamespaces #-}+{-# LANGUAGE FlexibleContexts #-}+{-# LANGUAGE FlexibleInstances #-}+{-# LANGUAGE KindSignatures #-}+{-# LANGUAGE MultiParamTypeClasses #-}+{-# LANGUAGE ScopedTypeVariables #-}+{-# LANGUAGE TypeApplications #-}+{-# LANGUAGE TypeFamilies #-}+{-# LANGUAGE TypeFamilyDependencies #-}+{-# LANGUAGE TypeOperators #-}++-- | Exposes type for reasoning about adversaries. Generally speaking, a+-- 'Functionality' may request interfaces from an 'Adversary', which need to be+-- supplied for it to run. The adversary also exposes some power to the+-- environment to arbitrarily control these interfaces. Functionalities should+-- be aware that the adversary may respond with anything correctly typed, and+-- is explicitly permitted to returning 'Nothing'. 'WithAdversary'' provides+-- an interface to repair unacceptable responses before the functionality+-- itself is called.+module Yggdrasil.Adversarial+ ( Adversary+ , MaybeMap+ , WithAdversary+ , WithAdversary'(..)+ , NoAdversary(..)+ , DummyInterfaces+ , DummyAdversary(..)+ , CreateAdversarial(..)+ ) where++import Control.Arrow (second)+import Control.Monad.Trans.Class (lift)+import Yggdrasil.ExecutionModel (Action (Create),+ Functionality (Functionality),+ InterfaceMap, Interfaces, Operation,+ Operations, Ref)+import Yggdrasil.HList (type (+|+), HList ((:::), Nil),+ HSplit (hsplit))++-- | Maps a list of @'(in, out)@ type tuples to @'(in, 'Maybe' out)@.+type family MaybeMap (bs :: [(*, *)]) = (ys :: [(*, *)]) | ys -> bs where+ MaybeMap '[] = '[]+ MaybeMap ('( a, b) ': xs) = '( a, Maybe b) ': MaybeMap xs++-- | Allows construction of @b@ given a list of interfaces @ts@ from the+-- adversary. The adversarial interfaces return 'Maybe's on all interfaces.+newtype WithAdversary s (ts :: [(*, *)]) b =+ WithAdversary (HList (Interfaces s (MaybeMap ts)) -> b)++-- | Allows construction of a 'Functionality' with state @c@ and interface @bs@+-- whjen given a list of interfaces @as@ from the adversary. The adversarial+-- interface is corrected, by passing it through a filter ensuring valid+-- responses.+data WithAdversary' s c (as :: [(*, *)]) (bs :: [(*, *)]) =+ WithAdversary' (HList (Interfaces s (MaybeMap as)) -> HList (Operations s c as))+ (HList (Operations s c as) -> Functionality s c bs)++-- | An adversary is a functionality that exposes some interfaces to the+-- environment, and some interfaces returning 'Maybe's to some other party.+type Adversary s c as bs = Functionality s c (as +|+ MaybeMap bs)++-- | The empty adversary returns 'Nothing'.+class NoAdversary s (bs :: [(*, *)]) where+ nullOperations :: HList (Operations s () (MaybeMap bs))+ noAdversary :: Adversary s () '[] bs+ noAdversary = Functionality () (nullOperations @s @bs)++instance NoAdversary s '[] where+ nullOperations = Nil++instance NoAdversary s xs => NoAdversary s ('( a, b) ': xs) where+ nullOperations = (\_ _ -> return Nothing) ::: nullOperations @s @xs++-- | Closely corresponding to 'Interfaces', but also receiving a reference to+-- the original sender.+type family DummyInterfaces s (xs :: [(*, *)]) = (ys :: [*]) | ys -> xs where+ DummyInterfaces s '[] = '[]+ DummyInterfaces s ('( a, b) ': xs) = (Ref s -> a -> Action s b) ': DummyInterfaces s xs++-- | A dummy adversary executes the interfaces the environments hands it.+class DummyAdversary s (bs :: [(*, *)]) where+ operations ::+ HList (DummyInterfaces s (MaybeMap bs))+ -> HList (Operations s () (MaybeMap bs))+ dummyAdversary ::+ HList (DummyInterfaces s (MaybeMap bs)) -> Adversary s () '[] bs+ dummyAdversary = Functionality () . operations @s @bs++instance DummyAdversary s '[] where+ operations _ = Nil++instance DummyAdversary s bs => DummyAdversary s ('( a, b) ': bs) where+ operations (b ::: bs) =+ ((\ref x -> lift $ b ref x) :: Operation s () a (Maybe b)) :::+ operations @s @bs bs++-- | Creates an adversarial functionality given a suitable adversary.+class CreateAdversarial s c as bs adv b where+ createAdversarial ::+ ( HSplit (Interfaces s (as +|+ MaybeMap bs)) (Interfaces s as) (Interfaces s (MaybeMap bs))+ , InterfaceMap s c (as +|+ MaybeMap bs)+ )+ => Adversary s c as bs+ -> adv+ -> Action s (HList (Interfaces s as), b)++instance CreateAdversarial s c as bs (WithAdversary s bs b) b where+ createAdversarial adv (WithAdversary f) = second f . hsplit <$> Create adv++instance CreateAdversarial s c as bs (WithAdversary' s c bs cs) (Functionality s c cs) where+ createAdversarial adv (WithAdversary' g f) =+ (\(a, b) -> (a, f (g b))) . hsplit <$> Create adv
+ src/Yggdrasil/Distribution.hs view
@@ -0,0 +1,98 @@+{-# LANGUAGE Rank2Types #-}+{-# LANGUAGE ScopedTypeVariables #-}+{-# LANGUAGE TupleSections #-}++-- | Provides primitives for high-level cryptographic sampling.+module Yggdrasil.Distribution+ ( Distribution+ , DistributionT(DistributionT, runDistT)+ , Sampler(..)+ , liftDistribution+ , coin+ , uniform+ ) where++import Control.Monad (ap, (>=>))+import Control.Monad.Trans.Class (MonadTrans (lift))+import Crypto.Random (SystemDRG, randomBytesGenerate)+import Data.Bits ((.&.))+import qualified Data.ByteArray as B+import Data.Functor.Identity (Identity (Identity), runIdentity)+import Data.Maybe (fromJust)++-- | Allows randomly sampling elements of type @b@.+type Distribution = DistributionT Identity++-- | Allows randomly sampling elements of type @b@ in the context of monad @m@.+newtype DistributionT m b = DistributionT+ { runDistT :: forall s. Sampler s =>+ s -> m (b, s)+ }++instance Monad m => Functor (DistributionT m) where+ fmap f x = pure f <*> x++instance Monad m => Applicative (DistributionT m) where+ pure x = DistributionT $ pure . (x, )+ (<*>) = ap++instance Monad m => Monad (DistributionT m) where+ a >>= b = DistributionT $ runDistT a >=> (\(a', s') -> runDistT (b a') s')++instance MonadTrans DistributionT where+ lift m = DistributionT $ \s -> (, s) <$> m++-- | Provides randomness.+class Sampler s+ where+ -- | Produce a bit of randomness.+ sampleCoin :: s -> (Bool, s)+ -- | Samples a distribution.+ sample :: s -> DistributionT m b -> m (b, s)+ sample s d = runDistT d s+ -- | Samples a distribution, discarding the result randomness.+ sample' :: Monad m => s -> DistributionT m b -> m b+ sample' s d = fst <$> sample s d++instance Sampler SystemDRG where+ sampleCoin s = (b .&. 1 == 1, s')+ where+ (ba :: B.Bytes, s') = randomBytesGenerate 1 s+ -- fromJust is safe, as the array is not empty.+ (b, _) = fromJust $ B.uncons ba++-- | Lifts a 'Distribution' to an arbitrary monadic 'DistributionT'.+liftDistribution :: Monad m => Distribution b -> DistributionT m b+liftDistribution d = DistributionT $ return . runIdentity . runDistT d++-- | Tosses a fair coin.+coin :: Distribution Bool+coin = DistributionT (Identity . sampleCoin)++-- | A uniform 'Distribution' over all elements of @[a]@.+uniform :: [a] -> Distribution a+uniform xs = do+ let l = length xs+ let lg = ilog2 l+ n <- samplen lg+ if n > l+ then uniform xs+ else return (xs !! n)+ where+ ilog2 :: Int -> Int+ ilog2 1 = 0+ ilog2 n+ | n > 1 = ilog2 (n `div` 2) + 1+ ilog2 _ = error "attempted non-postive logarithm"+ samplen :: Int -> Distribution Int+ samplen 0 = return 0+ samplen lg+ | lg > 0 = do+ n' <- samplen (lg - 1)+ c <- coin+ return $+ (n' * 2) ++ if c+ then 1+ else 0+ samplen _ = error "attempted to sample negative logarithm"
+ src/Yggdrasil/ExecutionModel.hs view
@@ -0,0 +1,158 @@+{-# LANGUAGE DataKinds #-}+{-# LANGUAGE ExistentialQuantification #-}+{-# LANGUAGE FlexibleInstances #-}+{-# LANGUAGE GADTs #-}+{-# LANGUAGE KindSignatures #-}+{-# LANGUAGE MultiParamTypeClasses #-}+{-# LANGUAGE Rank2Types #-}+{-# LANGUAGE ScopedTypeVariables #-}+{-# LANGUAGE TypeFamilies #-}+{-# LANGUAGE TypeFamilyDependencies #-}+{-# LANGUAGE TypeOperators #-}++-- | Defines the basic model of execution for Yggdrasil. This is modelled+-- after, but not directly equal to, the+-- <https://eprint.iacr.org/2000/068 Universal Composability framework by Ran Canetti>.+--+-- Usage typically involves constructing a complex 'Action', and then 'run'ning+-- it.+module Yggdrasil.ExecutionModel+ ( Operation+ , RealRef+ , Ref(External)+ , Action(Abort, Sample, Create, SecParam)+ , Operations+ , Interfaces+ , Functionality(..)+ , InterfaceMap(..)+ , ForceSample(forceSample)+ , run+ ) where++import Control.Monad (ap)+import Control.Monad.Fail (MonadFail (fail))+import Control.Monad.ST (ST, runST)+import Control.Monad.State.Lazy (StateT, runStateT)+import Control.Monad.Trans.Class (lift)+import Control.Monad.Trans.Maybe (MaybeT (MaybeT), runMaybeT)+import Data.STRef (STRef, newSTRef, readSTRef,+ writeSTRef)+import Yggdrasil.Distribution (Distribution, DistributionT (DistributionT, runDistT),+ coin, liftDistribution)+import Yggdrasil.HList (HList ((:::), Nil))++-- | Describes what a node with internal state of type @c@ does when passed an+-- input of type @a@ by @Ref s@.+type Operation s c a b = Ref s -> a -> StateT c (Action s) b++-- | Given a list of tuples of input and output types, construct a+-- corresponding list of 'Operation' types.+type family Operations s c (xs :: [(*, *)]) = (ys :: [*]) | ys -> xs where+ Operations s c '[] = '[]+ Operations s c ('( a, b) ': xs) = Operation s c a b ': Operations s c xs++-- | Given a list of tuples of input and output types, construct a+-- corresponding list of 'Interface' types.+type family Interfaces s (xs :: [(*, *)]) = (ys :: [*]) | ys -> xs where+ Interfaces s '[] = '[]+ Interfaces s ('( a, b) ': xs) = (a -> Action s b) ': Interfaces s xs++-- | A functionality is a stateful node, with an initial state, and an+-- interface typed by a list of input/output type tuples, and defined through a+-- 'HList' of 'Operation's.+data Functionality s c ops =+ Functionality c+ (HList (Operations s c ops))++type ID s = STRef s ()++data SendRef s a b =+ forall c. SendRef (RealRef s c)+ (Operation s c a b)++-- | A reference to an actual node in the system.+data RealRef s a =+ RealRef (STRef s a)+ (ID s)++-- | A reference to a node, either 'RealRef', or external to the system.+data Ref s+ = forall a. Ref (RealRef s a)+ | External++instance Eq (Ref s) where+ External == External = True+ Ref (RealRef _ a) == Ref (RealRef _ b) = a == b+ _ == _ = False++weaken :: SendRef s a b -> Ref s+weaken (SendRef ref _) = Ref ref++-- | Yggdrasil's version of 'IO'. Is self-contained, and can be opened with+-- 'run'.+data Action s b where+ -- | Fail. This should be used over actual errors!+ Abort :: Action s b+ -- | Retrieves the security parameter of the running system.+ SecParam :: Action s Int+ -- | Samples from a distribution.+ Sample :: Distribution b -> Action s b+ Send :: SendRef s a b -> a -> Action s b+ -- | Creates a new node from a functionality specification.+ Create+ :: InterfaceMap s c ops+ => Functionality s c (ops :: [(*, *)])+ -> Action s (HList (Interfaces s ops))+ Compose :: Action s c -> (c -> Action s b) -> Action s b++instance Functor (Action s) where+ fmap f x = pure f <*> x++instance Applicative (Action s) where+ pure = Sample . pure+ (<*>) = ap++instance Monad (Action s) where+ a >>= b = Compose a b++instance MonadFail (Action s) where+ fail _ = Abort++-- | Simulates a world running an external action.+run :: (forall s. Action s b) -> DistributionT Maybe b+run a =+ DistributionT $ \rng -> runST $ runMaybeT $ runDistT (run' External a) rng++run' :: Ref s -> Action s b -> DistributionT (MaybeT (ST s)) b+run' _ Abort = DistributionT $ \_ -> MaybeT $ return Nothing+-- TODO: Make a parameter+run' _ SecParam = return 128+run' _ (Sample d) = liftDistribution d+run' from (Send to@(SendRef (RealRef (ptr :: STRef s c) _) op) msg) = do+ c <- lift . lift $ readSTRef ptr+ (b, c') <- run' (weaken to) (runStateT (op from msg) c)+ lift . lift $ writeSTRef ptr c'+ return b+run' _ (Create (Functionality c ops)) = do+ ptr <- lift . lift $ newSTRef c+ id' <- lift . lift $ newSTRef ()+ return $ ifmap (RealRef ptr id') ops+run' from (Compose a f) = run' from a >>= run' from . f++-- | States we can create interfaces from operations. Implemented for all @ts@.+class InterfaceMap s c (ts :: [(*, *)]) where+ ifmap :: RealRef s c -> HList (Operations s c ts) -> HList (Interfaces s ts)++instance InterfaceMap s c '[] where+ ifmap _ Nil = Nil++instance InterfaceMap s c as => InterfaceMap s c ('( a, b) ': as) where+ ifmap ref (x ::: xs) = Send (SendRef ref x) ::: ifmap ref xs++-- | States that we can forcibly sample from a type, such that with negligible+-- probabily there is a collision between samples.+class ForceSample t where+ forceSample :: Action s t++instance ForceSample [Bool] where+ forceSample = SecParam >>= (\sp -> sequence [Sample coin | _ <- [0 .. sp]])
+ src/Yggdrasil/Functionalities.hs view
@@ -0,0 +1,110 @@+{-# LANGUAGE DataKinds #-}+{-# LANGUAGE GADTs #-}+{-# LANGUAGE LambdaCase #-}+{-# LANGUAGE ScopedTypeVariables #-}+{-# LANGUAGE TypeOperators #-}++-- | A collection of common functionalities, ready for use.+module Yggdrasil.Functionalities+ ( ROState+ , SigState+ , commonRandomString+ , randomOracle+ , signature+ ) where++import Control.Monad.State.Lazy (get, modify, put)+import Control.Monad.Trans.Class (lift)++import Yggdrasil.Adversarial (WithAdversary' (WithAdversary'))+import Yggdrasil.Distribution (Distribution)+import Yggdrasil.ExecutionModel (Action (Sample),+ ForceSample (forceSample),+ Functionality (Functionality),+ Interfaces, Operation, Operations,+ Ref)+import Yggdrasil.HList (HList ((:::), Nil))++crsOp :: Distribution b -> Operation s (Maybe b) () b+crsOp d _ () =+ get >>= \case+ Just x -> return x+ Nothing -> do+ x <- lift $ Sample d+ put $ Just x+ return x++-- | A CRS functionality over a given distribution.+commonRandomString :: Distribution b -> Functionality s (Maybe b) '[ '( (), b)]+commonRandomString d = Functionality Nothing (crsOp d ::: Nil)++-- | The state of a 'randomOracle'. Consists of previously recorded+-- query/response pairs.+type ROState a b = [(a, b)]++roLookup :: Eq a => a -> ROState a b -> Maybe b+roLookup _ [] = Nothing+roLookup x' ((x, y):_)+ | x == x' = Just y+roLookup x (_:xs) = roLookup x xs++roOp :: Eq a => Distribution b -> Operation s (ROState a b) a b+roOp d _ x =+ (roLookup x <$> get) >>= \case+ Just y -> return y+ Nothing -> do+ y <- lift $ Sample d+ modify ((x, y) :)+ return y++-- | A random oracle functionality, over a given distribution.+randomOracle ::+ Eq a => Distribution b -> Functionality s (ROState a b) '[ '( a, b)]+randomOracle d = Functionality [] (roOp d ::: Nil)++-- | The state of a 'signature' functionality. Consists of previously recorded+-- signatures, and their corresponding messages and signers.+type SigState s msg sig = [(msg, sig, Ref s)]++verifyOp ::+ (Eq msg, Eq sig) => Operation s (SigState s msg sig) (msg, sig, Ref s) Bool+verifyOp _ s = (s `elem`) <$> get++fixAdv ::+ (Eq msg, Eq sig, ForceSample sig)+ => HList (Interfaces s '[ '( (msg, Ref s), Maybe sig)])+ -> HList (Operations s (SigState s msg sig) '[ '( (msg, Ref s), sig)])+fixAdv (sign ::: Nil) = sign' ::: Nil+ where+ sign' _ (msg, ref) = do+ sig <-+ lift (sign (msg, ref)) >>= \case+ Just s -> do+ st <- get+ if (msg, s, ref) `elem` st+ then forceSample' msg ref+ else return s+ Nothing -> forceSample' msg ref+ modify ((msg, sig, ref) :)+ return sig+ forceSample' msg ref = do+ sig <- lift forceSample+ st <- get+ -- This may recursive infinitely iff the signature space is too small!+ -- This is a feature, not a bug.+ if (msg, sig, ref) `elem` st+ then forceSample' msg ref+ else return sig++-- | A robust signature functionality.+signature ::+ (Eq msg, Eq sig, ForceSample sig)+ => WithAdversary' s (SigState s msg sig)+ '[ '( (msg, Ref s), sig)]+ '[ '( (msg, Ref s), sig)+ , '( (msg, sig, Ref s), Bool)+ ]+signature =+ WithAdversary'+ fixAdv+ (\(sign ::: Nil) -> Functionality [] (sign ::: verifyOp ::: Nil))
+ src/Yggdrasil/HList.hs view
@@ -0,0 +1,51 @@+{-# LANGUAGE DataKinds #-}+{-# LANGUAGE ExplicitNamespaces #-}+{-# LANGUAGE FlexibleInstances #-}+{-# LANGUAGE GADTs #-}+{-# LANGUAGE KindSignatures #-}+{-# LANGUAGE MultiParamTypeClasses #-}+{-# LANGUAGE PolyKinds #-}+{-# LANGUAGE ScopedTypeVariables #-}+{-# LANGUAGE TypeApplications #-}+{-# LANGUAGE TypeFamilies #-}+{-# LANGUAGE TypeOperators #-}++-- | Provides heterogeneous lists through 'HList', as well as some type and+-- value level operations on them.+module Yggdrasil.HList+ ( HList(..)+ , type (+|+)+ , HAppend((+++))+ , HSplit(hsplit)+ ) where++infixr 5 :::+-- | A heterogeneous list.+data HList :: [*] -> * where+ Nil :: HList '[]+ (:::) :: a -> HList as -> HList (a ': as)++-- | Type-level appending of lists.+type family (as :: [k]) +|+ (bs :: [k]) :: [k] where+ '[] +|+ bs = bs+ (a ': as) +|+ bs = a ': (as +|+ bs)++-- | Value-level appending of 'HList's.+class HAppend as bs where+ (+++) :: HList as -> HList bs -> HList (as +|+ bs)++instance HAppend '[] bs where+ _ +++ bs = bs++instance HAppend as bs => HAppend (a ': as) bs where+ (a ::: as) +++ bs = a ::: (as +++ bs)++-- | Split a 'HList' at the value level given the type-level components.+class HSplit hs as bs where+ hsplit :: HList hs -> (HList as, HList bs)++instance HSplit bs '[] bs where+ hsplit bs = (Nil, bs)++instance HSplit hs as bs => HSplit (a ': hs) (a ': as) bs where+ hsplit (h ::: hs) = let (as, bs) = hsplit @hs @as @bs hs in (h ::: as, bs)
+ tests/ExecTests.hs view
@@ -0,0 +1,35 @@+{-# LANGUAGE ScopedTypeVariables #-}++module ExecTests+ ( spec+ ) where++import Crypto.Random (getSystemDRG)+import Data.Maybe (fromJust)+import Test.Hspec (Spec, describe, it, shouldBe)+import Test.Hspec.QuickCheck (prop)+import Yggdrasil.Distribution (sample', uniform)+import Yggdrasil.ExecutionModel (Action (Sample), run)++inSampleRange :: Int -> Bool+inSampleRange x = x > 4700 && x < 5300++sampleTest :: Action s Int+sampleTest = sampleTest' 10000+ where+ sampleTest' :: Int -> Action s Int+ sampleTest' 0 = return 0+ sampleTest' n = do+ x <- sampleTest' (n - 1)+ b <- Sample (uniform [0, 1])+ return $ x + b++spec :: IO Spec+spec = do+ rnd <- getSystemDRG+ return $+ describe "action" $ do+ prop "obeys return" $ \(x :: String) ->+ sample' rnd (run (return x)) == Just x+ it "samples evenly" $+ inSampleRange (fromJust $ sample' rnd (run sampleTest)) `shouldBe` True
+ tests/FunctTests.hs view
@@ -0,0 +1,49 @@+{-# LANGUAGE GADTs #-}+{-# LANGUAGE ScopedTypeVariables #-}++module FunctTests+ ( spec+ ) where++import Crypto.Random (getSystemDRG)+import Test.Hspec (Spec, describe, it, shouldBe)+import Yggdrasil.Distribution (sample', uniform)+import Yggdrasil.ExecutionModel (Action (Create), run)+import Yggdrasil.Functionalities (commonRandomString, randomOracle)+import Yggdrasil.HList (HList ((:::), Nil))++crsSameTest :: Action s Bool+crsSameTest = do+ (crsHandle ::: Nil) <-+ Create $ commonRandomString (uniform [0 .. 10000 :: Int])+ fst' <- crsHandle ()+ snd' <- crsHandle ()+ return (fst' == snd')++roSameTest :: Action s Bool+roSameTest = do+ ((roHandle :: Int -> Action s Int) ::: Nil) <-+ Create $ randomOracle (uniform [0 .. 1000 :: Int])+ fst' <- roHandle 1+ snd' <- roHandle 1+ return (fst' == snd')++roAllEqual :: Action s Bool+roAllEqual = do+ ((roHandle :: Int -> Action s Int) ::: Nil) <-+ Create $ randomOracle (uniform [0 .. 1000 :: Int])+ xs <- sequence [roHandle i | i <- [1 .. 1000]]+ return $ all (== head xs) (tail xs)++spec :: IO Spec+spec = do+ rnd <- getSystemDRG+ return $ do+ describe "common random string" $+ it "returns the same value" $+ sample' rnd (run crsSameTest) `shouldBe` Just True+ describe "random oracle" $ do+ it "returns the same for the same query" $+ sample' rnd (run roSameTest) `shouldBe` Just True+ it "is random with different queries" $+ sample' rnd (run roAllEqual) `shouldBe` Just False
+ tests/Spec.hs view
@@ -0,0 +1,11 @@+import Test.Hspec (hspec)++import qualified ExecTests+import qualified FunctTests++main :: IO ()+main = do+ execTests <- ExecTests.spec+ functTests <- FunctTests.spec+ hspec execTests+ hspec functTests
+ yggdrasil.cabal view
@@ -0,0 +1,51 @@+name: yggdrasil+version: 0.1.0.0+synopsis: Executable specifications of composable cryptographic protocols.+description: Yggdrasil is a framework for writing executable+ specification of composable cryptographic protocols. It is+ modelled after Ran Canetti's Universal Composability+ framework, although it departs from it in multiple places+ to simplify the interface, and provide strong typing.+homepage: https://git.drwx.org/phd/yggdrasil+license: AGPL-3+license-file: LICENSE+author: Thomas Kerber+maintainer: tk@drwx.org+category: Cryptography+build-type: Simple+extra-source-files: ChangeLog.md+cabal-version: >=1.10++source-repository head+ type: git+ location: https://git.drwx.org/phd/yggdrasil++library+ exposed-modules: Yggdrasil.Adversarial+ Yggdrasil.Distribution+ Yggdrasil.ExecutionModel+ Yggdrasil.Functionalities+ Yggdrasil.HList+ build-depends: base >= 4.11 && < 4.12+ , cryptonite >= 0.25 && < 0.26+ , memory >= 0.14 && < 0.15+ , mtl >= 2.2 && < 2.3+ , transformers >= 0.5 && < 0.6+ hs-source-dirs: src+ default-language: Haskell2010+ ghc-options: -Wall -Wcompat -Wincomplete-record-updates -Wincomplete-uni-patterns -Wredundant-constraints++test-suite spec+ type: exitcode-stdio-1.0+ other-extensions: ScopedTypeVariables+ default-language: Haskell2010+ hs-source-dirs: tests+ ghc-options: -Wall -Wcompat -Wincomplete-record-updates -Wincomplete-uni-patterns -Wredundant-constraints+ main-is: Spec.hs+ other-modules: ExecTests+ FunctTests+ build-depends: cryptonite+ , base+ , hspec+ , QuickCheck+ , yggdrasil