9fd95d9025
Found these with: git grep "^ " $(find -type f -name \*.hs) |grep -v ': where' Unfortunately there is some inline hamlet that cannot use tabs for indentation. Also, Assistant/WebApp/Bootstrap3.hs is a copy of a module and so I'm leaving it as-is.
73 lines
1.9 KiB
Haskell
73 lines
1.9 KiB
Haskell
{- git-annex crypto types
|
|
-
|
|
- Copyright 2011-2012 Joey Hess <joey@kitenet.net>
|
|
-
|
|
- Licensed under the GNU GPL version 3 or higher.
|
|
-}
|
|
|
|
module Types.Crypto (
|
|
Cipher(..),
|
|
StorableCipher(..),
|
|
EncryptedCipherVariant(..),
|
|
KeyIds(..),
|
|
Mac(..),
|
|
readMac,
|
|
showMac,
|
|
defaultMac,
|
|
calcMac,
|
|
) where
|
|
|
|
import qualified Data.ByteString.Lazy as L
|
|
import Data.Digest.Pure.SHA
|
|
|
|
import Utility.Gpg (KeyIds(..))
|
|
|
|
-- XXX ideally, this would be a locked memory region
|
|
data Cipher = Cipher String | MacOnlyCipher String
|
|
|
|
data StorableCipher = EncryptedCipher String EncryptedCipherVariant KeyIds
|
|
| SharedCipher String
|
|
deriving (Ord, Eq)
|
|
data EncryptedCipherVariant = Hybrid | PubKey
|
|
deriving (Ord, Eq)
|
|
|
|
{- File names are (client-side) MAC'ed on special remotes.
|
|
- The chosen MAC algorithm needs to be same for all files stored on the
|
|
- remote.
|
|
-}
|
|
data Mac = HmacSha1 | HmacSha224 | HmacSha256 | HmacSha384 | HmacSha512
|
|
deriving (Eq)
|
|
|
|
defaultMac :: Mac
|
|
defaultMac = HmacSha1
|
|
|
|
-- MAC algorithms are shown as follows in the file names.
|
|
showMac :: Mac -> String
|
|
showMac HmacSha1 = "HMACSHA1"
|
|
showMac HmacSha224 = "HMACSHA224"
|
|
showMac HmacSha256 = "HMACSHA256"
|
|
showMac HmacSha384 = "HMACSHA384"
|
|
showMac HmacSha512 = "HMACSHA512"
|
|
|
|
-- Read the MAC algorithm from the remote config.
|
|
readMac :: String -> Maybe Mac
|
|
readMac "HMACSHA1" = Just HmacSha1
|
|
readMac "HMACSHA224" = Just HmacSha224
|
|
readMac "HMACSHA256" = Just HmacSha256
|
|
readMac "HMACSHA384" = Just HmacSha384
|
|
readMac "HMACSHA512" = Just HmacSha512
|
|
readMac _ = Nothing
|
|
|
|
calcMac
|
|
:: Mac -- ^ MAC
|
|
-> L.ByteString -- ^ secret key
|
|
-> L.ByteString -- ^ message
|
|
-> String -- ^ MAC'ed message, in hexadecimal
|
|
calcMac mac = case mac of
|
|
HmacSha1 -> showDigest $* hmacSha1
|
|
HmacSha224 -> showDigest $* hmacSha224
|
|
HmacSha256 -> showDigest $* hmacSha256
|
|
HmacSha384 -> showDigest $* hmacSha384
|
|
HmacSha512 -> showDigest $* hmacSha512
|
|
where
|
|
($*) g f x y = g $ f x y
|