diff --git a/Data/OpenPGP/CryptoAPI.hs b/Data/OpenPGP/CryptoAPI.hs
--- a/Data/OpenPGP/CryptoAPI.hs
+++ b/Data/OpenPGP/CryptoAPI.hs
@@ -6,7 +6,7 @@
 import Data.Bits
 import Data.List (find)
 import Data.Binary
-import Crypto.Classes hiding (hash,sign,verify)
+import Crypto.Classes hiding (hash,sign,verify,encode)
 import Crypto.Random (CryptoRandomGen)
 import Crypto.Hash.MD5 (MD5)
 import Crypto.Hash.SHA1 (SHA1)
@@ -15,7 +15,7 @@
 import Crypto.Hash.SHA384 (SHA384)
 import Crypto.Hash.SHA512 (SHA512)
 import Crypto.Hash.SHA224 (SHA224)
-import qualified Data.Serialize as Serialize (encode)
+import qualified Crypto.Classes as Serialize (encode)
 import qualified Crypto.Cipher.RSA as RSA
 import qualified Crypto.Cipher.DSA as DSA
 import qualified Data.ByteString as BS
@@ -93,7 +93,7 @@
 privateRSAkey :: OpenPGP.Packet -> RSA.PrivateKey
 privateRSAkey k =
 	-- Invert p and q because u is pinv not qinv
-	RSA.PrivateKey (integerBytesize n) n d q p
+	RSA.PrivateKey pubkey d q p
 		(d `mod` (q-1))
 		(d `mod` (p-1))
 		(keyParam 'u' k)
@@ -101,7 +101,7 @@
 	d = keyParam 'd' k
 	p = keyParam 'p' k
 	q = keyParam 'q' k
-	n = keyParam 'n' k
+	pubkey = rsaKey k
 
 rsaKey :: OpenPGP.Packet -> RSA.PublicKey
 rsaKey k =
diff --git a/README b/README
--- a/README
+++ b/README
@@ -2,7 +2,7 @@
 and related libraries that currently does fingerprint generation, signature
 generation, and signature verification (for RSA and DSA keys).
 
-It is indended to be used with <http://hackage.haskell.org/openpgp>
+It is indended to be used with <http://hackage.haskell.org/package/openpgp>
 
 It is intended that you use qualified imports with this library.
 
diff --git a/openpgp-crypto-api.cabal b/openpgp-crypto-api.cabal
--- a/openpgp-crypto-api.cabal
+++ b/openpgp-crypto-api.cabal
@@ -1,5 +1,5 @@
 name:            openpgp-crypto-api
-version:         0.3
+version:         0.4
 cabal-version:   >= 1.8
 license:         OtherLicense
 license-file:    COPYING
@@ -18,7 +18,7 @@
         and related libraries that currently does fingerprint generation, signature
         generation, and signature verification (for RSA and DSA keys).
         .
-        It is indended to be used with <http://hackage.haskell.org/openpgp>
+        It is indended to be used with <http://hackage.haskell.org/package/openpgp>
         .
         It is intended that you use qualified imports with this library.
         .
@@ -49,7 +49,7 @@
                 binary,
                 openpgp,
                 crypto-api,
-                cryptocipher,
+                cryptocipher >= 0.3.7,
                 cryptohash,
                 cereal
 
@@ -64,7 +64,7 @@
                 binary,
                 openpgp,
                 crypto-api >= 0.9,
-                cryptocipher,
+                cryptocipher >= 0.3.7,
                 cryptohash,
                 HUnit,
                 QuickCheck >= 2.4.1.1,