diff --git a/Data/Certificate/X509.hs b/Data/Certificate/X509.hs
--- a/Data/Certificate/X509.hs
+++ b/Data/Certificate/X509.hs
@@ -76,10 +76,10 @@
 	  PubKeyRSA (Int, Integer, Integer) -- len modulus, modulus, e
 	| PubKeyDSA (L.ByteString, Integer, Integer, Integer) -- pub, p, q, g
 	| PubKeyUnknown [Word8]
-	deriving (Show)
+	deriving (Show,Eq)
 
 data PubKey = PubKey SignatureALG PubKeyDesc -- OID RSA|DSA|rawdata
-	deriving (Show)
+	deriving (Show,Eq)
 
 data CertificateDN = CertificateDN {
 	cdnCommonName       :: Maybe String,
@@ -87,7 +87,7 @@
 	cdnOrganization     :: Maybe String,
 	cdnOrganizationUnit :: Maybe String,
 	cdnOthers           :: [ (OID, String) ]
-	} deriving (Show)
+	} deriving (Show,Eq)
 
 -- FIXME use a proper standard type for representing time.
 type Time = (Int, Int, Int, Int, Int, Int, Bool)
@@ -103,7 +103,7 @@
 	certExtensions   :: Maybe [ASN1],
 	certSignature    :: Maybe (SignatureALG, [Word8]),
 	certOthers       :: [ASN1]
-	} deriving (Show)
+	} deriving (Show,Eq)
 
 {- | parse a RSA pubkeys from ASN1 encoded bits.
  - return PubKeyRSA (len-modulus, modulus, e) if successful -}
diff --git a/certificate.cabal b/certificate.cabal
--- a/certificate.cabal
+++ b/certificate.cabal
@@ -1,12 +1,16 @@
 Name:                certificate
-Version:             0.1
-Description:         Certificate and Key reader/writer
+Version:             0.2
+Description:
+    Certificates and Key reader/writer
+    .
+    At the moment only X509 certificate and unencrypted private key are supported,
+    but will include PGP certificate and pkcs8 private keys
 License:             BSD3
 License-file:        LICENSE
 Copyright:           Vincent Hanquez <vincent@snarc.org>
 Author:              Vincent Hanquez <vincent@snarc.org>
 Maintainer:          Vincent Hanquez <vincent@snarc.org>
-Synopsis:            Certificate and Key Reader/Writer
+Synopsis:            Certificates and Key Reader/Writer
 Build-Type:          Simple
 Category:            Data
 stability:           experimental