Re: [Haskell-cafe] Re: Codec.Crypto.RSA question
Then how about using encode (as in your original example) and decode (both from Data.Binary). IMO it's garanteed that decode . encode = id (at least for the standard types). ... decrypt :: Data.ByteString.Lazy.ByteString -> String decrypt = decode . Crypto.decrypt privKey ... Am 21.11.2010 18:18, schrieb Charles-Pierre Astolfi: > Thanks Mat, it works, but I still have a problem: I'm heavily using > Data.Binary.encode for various types (Int32, Int8, String, Bool...) > and I don't know how I should manage this using > Data.ByteString.Lazy.Char8. > > -- > Cp > > > > On Sat, Nov 20, 2010 at 22:35, Mathias Weber wrote: >> The problem in this example is the use of Data.Binary. When using >> Data.ByteString.Lazy.Char8 instead, the problem does not exist. >> >> import qualified Codec.Crypto.RSA as Crypto >> import System.Random (mkStdGen) >> import Data.ByteString.Lazy.UTF8 (toString) >> import qualified Data.ByteString.Lazy.Char8 as C8 >> import qualified Data.ByteString.Lazy >> >> n = 1024 >> (pubKey,privKey,_) = Crypto.generateKeyPair (mkStdGen n) n >> >> encrypt :: String -> Data.ByteString.Lazy.ByteString >> encrypt str = fst $ Crypto.encrypt (mkStdGen n) pubKey (C8.pack str) >> >> decrypt :: Data.ByteString.Lazy.ByteString -> String >> decrypt = toString . Crypto.decrypt privKey >> >> decrypt $ encrypt "haskell" = "haskell" >> >> >> >> Regards, >> Mathias >> >> Am 20.11.2010 13:15, schrieb Charles-Pierre Astolfi: >> >>> Here's a working example: >>> >>> import qualified Codec.Crypto.RSA as Crypto >>> import System.Random (mkStdGen) >>> import Data.Binary (encode) >>> import Data.ByteString.Lazy.UTF8 (toString) >>> >>> n = 1024 >>> (pubKey,privKey,_) = Crypto.generateKeyPair (mkStdGen n) n >>> >>> encrypt :: (Data.Binary.Binary a) => a -> >>> Data.ByteString.Lazy.Internal.ByteString >>> encrypt str = fst $ Crypto.encrypt (mkStdGen n) pubKey (encode str) >>> >>> decrypt :: Data.ByteString.Lazy.Internal.ByteString -> String >>> decrypt = toString . Crypto.decrypt privKey >>> >>> Thus, >>> decrypt $ encrypt "haskell" = "\NUL\NUL\NUL\NUL\NUL\NUL\NUL\ahaskell" >>> >>> >>> I'm using Codec.Crypto.RSA and you're quoting Codec.Encryption.RSA, >>> which is not the same thing; unfortunately I need to use RSAES-OAEP >>> (SHA1) so I guess I have to stick with Codec.Crypto.RSA. >>> Any ideas? >>> -- >>> Cp >>> >>> >>> >>> On Sat, Nov 20, 2010 at 12:50, Dominic Steinitz >>> wrote: Charles-Pierre Astolfi crans.org> writes: > Hi -cafe, > > I have a question about Codec.Crypto.RSA: how to enforce that > (informally) decrypt . encrypt = id > Consider this code: > That's certainly what I would expect and one of the unit tests that comes with http://hackage.haskell.org/packages/archive/Crypto/4.2.2/doc/html/Codec-Encryption-RSA.html checks for this. I wasn't able to get you code to compile so I couldn't investigate further. Maybe you could post a fully compiling example? ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe >>> ___ >>> Haskell-Cafe mailing list >>> Haskell-Cafe@haskell.org >>> http://www.haskell.org/mailman/listinfo/haskell-cafe >> ___ >> Haskell-Cafe mailing list >> Haskell-Cafe@haskell.org >> http://www.haskell.org/mailman/listinfo/haskell-cafe >> >> ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Re: Codec.Crypto.RSA question
Thanks Mat, it works, but I still have a problem: I'm heavily using Data.Binary.encode for various types (Int32, Int8, String, Bool...) and I don't know how I should manage this using Data.ByteString.Lazy.Char8. -- Cp On Sat, Nov 20, 2010 at 22:35, Mathias Weber wrote: > The problem in this example is the use of Data.Binary. When using > Data.ByteString.Lazy.Char8 instead, the problem does not exist. > > import qualified Codec.Crypto.RSA as Crypto > import System.Random (mkStdGen) > import Data.ByteString.Lazy.UTF8 (toString) > import qualified Data.ByteString.Lazy.Char8 as C8 > import qualified Data.ByteString.Lazy > > n = 1024 > (pubKey,privKey,_) = Crypto.generateKeyPair (mkStdGen n) n > > encrypt :: String -> Data.ByteString.Lazy.ByteString > encrypt str = fst $ Crypto.encrypt (mkStdGen n) pubKey (C8.pack str) > > decrypt :: Data.ByteString.Lazy.ByteString -> String > decrypt = toString . Crypto.decrypt privKey > > decrypt $ encrypt "haskell" = "haskell" > > > > Regards, > Mathias > > Am 20.11.2010 13:15, schrieb Charles-Pierre Astolfi: > >> Here's a working example: >> >> import qualified Codec.Crypto.RSA as Crypto >> import System.Random (mkStdGen) >> import Data.Binary (encode) >> import Data.ByteString.Lazy.UTF8 (toString) >> >> n = 1024 >> (pubKey,privKey,_) = Crypto.generateKeyPair (mkStdGen n) n >> >> encrypt :: (Data.Binary.Binary a) => a -> >> Data.ByteString.Lazy.Internal.ByteString >> encrypt str = fst $ Crypto.encrypt (mkStdGen n) pubKey (encode str) >> >> decrypt :: Data.ByteString.Lazy.Internal.ByteString -> String >> decrypt = toString . Crypto.decrypt privKey >> >> Thus, >> decrypt $ encrypt "haskell" = "\NUL\NUL\NUL\NUL\NUL\NUL\NUL\ahaskell" >> >> >> I'm using Codec.Crypto.RSA and you're quoting Codec.Encryption.RSA, >> which is not the same thing; unfortunately I need to use RSAES-OAEP >> (SHA1) so I guess I have to stick with Codec.Crypto.RSA. >> Any ideas? >> -- >> Cp >> >> >> >> On Sat, Nov 20, 2010 at 12:50, Dominic Steinitz >> wrote: > >>> Charles-Pierre Astolfi crans.org> writes: >>> > Hi -cafe, I have a question about Codec.Crypto.RSA: how to enforce that (informally) decrypt . encrypt = id Consider this code: > >>> That's certainly what I would expect and one of the unit tests that >>> comes with >>> >>> http://hackage.haskell.org/packages/archive/Crypto/4.2.2/doc/html/Codec-Encryption-RSA.html >>> checks for this. I wasn't able to get you code to compile so I couldn't >>> investigate further. Maybe you could post a fully compiling example? >>> >>> ___ >>> Haskell-Cafe mailing list >>> Haskell-Cafe@haskell.org >>> http://www.haskell.org/mailman/listinfo/haskell-cafe >>> > >> ___ >> Haskell-Cafe mailing list >> Haskell-Cafe@haskell.org >> http://www.haskell.org/mailman/listinfo/haskell-cafe > > ___ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe > > ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Re: Codec.Crypto.RSA question
The problem in this example is the use of Data.Binary. When using Data.ByteString.Lazy.Char8 instead, the problem does not exist. import qualified Codec.Crypto.RSA as Crypto import System.Random (mkStdGen) import Data.ByteString.Lazy.UTF8 (toString) import qualified Data.ByteString.Lazy.Char8 as C8 import qualified Data.ByteString.Lazy n = 1024 (pubKey,privKey,_) = Crypto.generateKeyPair (mkStdGen n) n encrypt :: String -> Data.ByteString.Lazy.ByteString encrypt str = fst $ Crypto.encrypt (mkStdGen n) pubKey (C8.pack str) decrypt :: Data.ByteString.Lazy.ByteString -> String decrypt = toString . Crypto.decrypt privKey decrypt $ encrypt "haskell" = "haskell" Regards, Mathias Am 20.11.2010 13:15, schrieb Charles-Pierre Astolfi: > > Here's a working example: > > > > import qualified Codec.Crypto.RSA as Crypto > > import System.Random (mkStdGen) > > import Data.Binary (encode) > > import Data.ByteString.Lazy.UTF8 (toString) > > > > n = 1024 > > (pubKey,privKey,_) = Crypto.generateKeyPair (mkStdGen n) n > > > > encrypt :: (Data.Binary.Binary a) => a -> > > Data.ByteString.Lazy.Internal.ByteString > > encrypt str = fst $ Crypto.encrypt (mkStdGen n) pubKey (encode str) > > > > decrypt :: Data.ByteString.Lazy.Internal.ByteString -> String > > decrypt = toString . Crypto.decrypt privKey > > > > Thus, > > decrypt $ encrypt "haskell" = "\NUL\NUL\NUL\NUL\NUL\NUL\NUL\ahaskell" > > > > > > I'm using Codec.Crypto.RSA and you're quoting Codec.Encryption.RSA, > > which is not the same thing; unfortunately I need to use RSAES-OAEP > > (SHA1) so I guess I have to stick with Codec.Crypto.RSA. > > Any ideas? > > -- > > Cp > > > > > > > > On Sat, Nov 20, 2010 at 12:50, Dominic Steinitz > > wrote: >> >> Charles-Pierre Astolfi crans.org> writes: >> >> >>> >>> Hi -cafe, >>> >>> >>> >>> I have a question about Codec.Crypto.RSA: how to enforce that >>> >>> (informally) decrypt . encrypt = id >>> >>> Consider this code: >>> >>> >> >> That's certainly what I would expect and one of the unit tests that >> >> comes with >> >> http://hackage.haskell.org/packages/archive/Crypto/4.2.2/doc/html/Codec-Encryption-RSA.html >> >> checks for this. I wasn't able to get you code to compile so I couldn't >> >> investigate further. Maybe you could post a fully compiling example? >> >> >> >> ___ >> >> Haskell-Cafe mailing list >> >> Haskell-Cafe@haskell.org >> >> http://www.haskell.org/mailman/listinfo/haskell-cafe >> >> > > ___ > > Haskell-Cafe mailing list > > Haskell-Cafe@haskell.org > > http://www.haskell.org/mailman/listinfo/haskell-cafe ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Re: Codec.Crypto.RSA question
Charles-Pierre Astolfi wrote: > Here's a working example: > > import qualified Codec.Crypto.RSA as Crypto > import System.Random (mkStdGen) > import Data.Binary (encode) > import Data.ByteString.Lazy.UTF8 (toString) > > n = 1024 > (pubKey,privKey,_) = Crypto.generateKeyPair (mkStdGen n) n > > encrypt :: (Data.Binary.Binary a) => a -> > Data.ByteString.Lazy.Internal.ByteString > encrypt str = fst $ Crypto.encrypt (mkStdGen n) pubKey (encode str) > > decrypt :: Data.ByteString.Lazy.Internal.ByteString -> String > decrypt = toString . Crypto.decrypt privKey > > Thus, > decrypt $ encrypt "haskell" = "\NUL\NUL\NUL\NUL\NUL\NUL\NUL\ahaskell" > > > I'm using Codec.Crypto.RSA and you're quoting Codec.Encryption.RSA, > which is not the same thing; unfortunately I need to use RSAES-OAEP > (SHA1) so I guess I have to stick with Codec.Crypto.RSA. > Any ideas? > -- > I was quoting Codec.Encryption.RSA only to suggest that I would expect that decrypt . encrypt == id. Here's an example using RSAES-OAEP that demonstrates the desired property. I'm not sure what your application is but if you want to interoperate e.g. with openssl, it's pretty essential to be able to be able to handle certificates. Unfortunately, it looks like the asn1 package is now bit-rotted. At one point there was a test against openssl together with instructions on how to interoperate. I still have the instructions if you are interested. > module Main(main) where > > import Codec.Utils > import Data.Digest.SHA1(hash,Word160(Word160)) > import Codec.Encryption.RSA.MGF > import Codec.Encryption.RSA.EMEOAEP > import Codec.Encryption.RSA > import Test.HUnit > > import qualified Codec.Crypto.RSA as Crypto > import System.Random (mkStdGen) > import qualified Data.Binary as Binary > import Data.ByteString.Lazy.UTF8 (toString) > > import Data.Char > import qualified Codec.Encryption.RSA.EMEOAEP as E > import Codec.Encryption.RSA.MGF > > > n1 = 1024 > (pubKey,privKey,_) = Crypto.generateKeyPair (mkStdGen n1) n1 > > encrypt1 str = fst $ Crypto.encrypt (mkStdGen n1) pubKey > (Binary.encode str) > > decrypt1 = toString . Crypto.decrypt privKey > > randomSeed :: [Octet] > randomSeed = hash' [3] > > hash' xs = let (Word160 a b c d e) = hash xs in concatMap (toOctets > 256) [a,b,c,d,e] > > ciphertext :: [Octet] -> [Octet] -> String -> [Octet] > ciphertext n d x = >encrypt (n,d) $ >E.encode mgf hash' [] randomSeed n $ >map (fromIntegral . ord) x > > plaintext :: [Octet] -> [Octet] -> [Octet] -> String > plaintext n e x = >map (chr . fromIntegral) $ >E.decode mgf hash' [] $ >decrypt (n,e) $ x > > ciphertext1 privKey x = >ciphertext (toOctets 256 $ Crypto.private_n privKey) (toOctets 256 > $ Crypto.private_d privKey) x > > plaintext1 pubKey x = >plaintext (toOctets 256 $ Crypto.public_n pubKey) (toOctets 256 $ > Crypto.public_e pubKey) x > > main = putStrLn $ plaintext1 pubKey $ ciphertext1 privKey "Hello" ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Re: Codec.Crypto.RSA question
Here's a working example: import qualified Codec.Crypto.RSA as Crypto import System.Random (mkStdGen) import Data.Binary (encode) import Data.ByteString.Lazy.UTF8 (toString) n = 1024 (pubKey,privKey,_) = Crypto.generateKeyPair (mkStdGen n) n encrypt :: (Data.Binary.Binary a) => a -> Data.ByteString.Lazy.Internal.ByteString encrypt str = fst $ Crypto.encrypt (mkStdGen n) pubKey (encode str) decrypt :: Data.ByteString.Lazy.Internal.ByteString -> String decrypt = toString . Crypto.decrypt privKey Thus, decrypt $ encrypt "haskell" = "\NUL\NUL\NUL\NUL\NUL\NUL\NUL\ahaskell" I'm using Codec.Crypto.RSA and you're quoting Codec.Encryption.RSA, which is not the same thing; unfortunately I need to use RSAES-OAEP (SHA1) so I guess I have to stick with Codec.Crypto.RSA. Any ideas? -- Cp On Sat, Nov 20, 2010 at 12:50, Dominic Steinitz wrote: > Charles-Pierre Astolfi crans.org> writes: > >> >> Hi -cafe, >> >> I have a question about Codec.Crypto.RSA: how to enforce that >> (informally) decrypt . encrypt = id >> Consider this code: >> > That's certainly what I would expect and one of the unit tests that comes > with > http://hackage.haskell.org/packages/archive/Crypto/4.2.2/doc/html/Codec-Encryption-RSA.html > checks for this. I wasn't able to get you code to compile so I couldn't > investigate further. Maybe you could post a fully compiling example? > > ___ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe > ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] Re: Codec.Crypto.RSA question
Charles-Pierre Astolfi crans.org> writes: > > Hi -cafe, > > I have a question about Codec.Crypto.RSA: how to enforce that > (informally) decrypt . encrypt = id > Consider this code: > That's certainly what I would expect and one of the unit tests that comes with http://hackage.haskell.org/packages/archive/Crypto/4.2.2/doc/html/Codec-Encryption-RSA.html checks for this. I wasn't able to get you code to compile so I couldn't investigate further. Maybe you could post a fully compiling example? ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
