diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,30 @@
+Copyright (c) 2017, Gregor Kleen
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * Neither the name of Gregor Kleen nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/Setup.hs b/Setup.hs
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--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/changes.md b/changes.md
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--- /dev/null
+++ b/changes.md
@@ -0,0 +1,3 @@
+# 0.0.0
+
+First published version
diff --git a/cryptoids-types.cabal b/cryptoids-types.cabal
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--- /dev/null
+++ b/cryptoids-types.cabal
@@ -0,0 +1,31 @@
+name: cryptoids-types
+version: 0.0.0
+cabal-version: >=1.10
+build-type: Simple
+license: BSD3
+license-file: LICENSE
+maintainer: aethoago@141.li
+synopsis: Shared types for encrypting internal object identifiers before exposure
+category: Web
+author: Gregor Kleen
+extra-source-files:
+    changes.md
+
+source-repository head
+    type: git
+    location: https://git.rheperire.org/cryptoids
+    subdir: cryptoids-types
+
+library
+    exposed-modules:
+        Data.CryptoID
+    build-depends:
+        base >=4.9 && <4.11,
+        binary >=0.8.3.0 && <0.9,
+        path-pieces >=0.2.1 && <0.3,
+        http-api-data >=0.3.7.1 && <0.4
+    default-language: Haskell2010
+    default-extensions: KindSignatures DataKinds
+                        GeneralizedNewtypeDeriving DeriveGeneric DeriveDataTypeable
+    hs-source-dirs: src
+
diff --git a/src/Data/CryptoID.hs b/src/Data/CryptoID.hs
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--- /dev/null
+++ b/src/Data/CryptoID.hs
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+module Data.CryptoID
+  ( CryptoID(..)
+  ) where
+
+import GHC.Generics (Generic)
+import Data.Typeable (Typeable)
+import Data.Data (Data)
+import GHC.TypeLits (Symbol)
+
+import Data.Binary (Binary)
+import Foreign.Storable (Storable)
+
+import Web.PathPieces (PathPiece)
+import Web.HttpApiData (ToHttpApiData, FromHttpApiData)
+
+newtype CryptoID (namespace :: Symbol) a = CryptoID { ciphertext :: a }
+  deriving ( Eq, Ord
+           , Read, Show
+           , Binary, Storable
+           , Data, Typeable, Generic
+           , PathPiece, ToHttpApiData, FromHttpApiData
+           )