ThomasToVincent adapter.

1 files changed, 24 insertions, 0 deletions

diff --git a/Crypto/Cipher/ThomasToVincent.hs b/Crypto/Cipher/ThomasToVincent.hs
new file mode 100644
index 0000000..85b0875
--- /dev/null
+++ b/Crypto/Cipher/ThomasToVincent.hs
@@ -0,0 +1,24 @@
+{-# LANGUAGE ScopedTypeVariables #-}
+module Crypto.Cipher.ThomasToVincent where
+
+import Crypto.Cipher.Types
+import Data.Byteable
+
+import Data.Tagged
+import qualified Crypto.Classes as Thomas
+
+newtype ThomasToVincent b = ThomasToVincent b
+
+instance Thomas.BlockCipher b => Cipher (ThomasToVincent b) where
+    cipherName _ = "ThomasToVincent"
+    cipherInit k = ThomasToVincent b
+      where Just b = Thomas.buildKey (toBytes k)
+    cipherKeySize _ =  KeySizeFixed (bitlen `div` 8)
+      where Tagged bitlen = Thomas.keyLength :: Tagged b Int
+
+instance Thomas.BlockCipher b => BlockCipher (ThomasToVincent b) where
+    blockSize _ = bitlen `div` 8
+     where Tagged bitlen = Thomas.blockSize :: Tagged b Int
+    ecbEncrypt (ThomasToVincent k) = Thomas.ecb k
+    ecbDecrypt (ThomasToVincent k) = Thomas.unEcb k
+