gnu: Add ghc-cipher-aes.

* gnu/packages/haskell-crypto.scm (ghc-cipher-aes): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/packages/haskell-crypto.scm

@@ -552,3 +552,43 @@ for X.509 certificates.")
     (description "This Haskell package provides basic typeclasses and types
 for symmetric ciphers.")
     (license license:bsd-3)))
+
+(define-public ghc-cipher-aes
+  (package
+    (name "ghc-cipher-aes")
+    (version "0.2.11")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "cipher-aes-" version "/"
+                           "cipher-aes-" version ".tar.gz"))
+       (sha256
+        (base32
+         "05ahz6kjq0fl1w66gpiqy0vndli5yx1pbsbw9ni3viwqas4p3cfk"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-byteable" ,ghc-byteable)
+              ("ghc-securemem" ,ghc-securemem)
+              ("ghc-crypto-cipher-types" ,ghc-crypto-cipher-types)))
+    (native-inputs `(("ghc-quickcheck" ,ghc-quickcheck)
+                     ("ghc-test-framework" ,ghc-test-framework)
+                     ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)
+                     ("ghc-crypto-cipher-tests" ,ghc-crypto-cipher-tests)))
+    (home-page "https://github.com/vincenthz/hs-cipher-aes")
+    (synopsis "AES cipher implementation with advanced mode of operations for
+Haskell")
+    (description "This Haskell package provides AES cipher implementation.
+
+The modes of operations available are ECB (Electronic code book), CBC (Cipher
+block chaining), CTR (Counter), XTS (XEX with ciphertext stealing),
+GCM (Galois Counter Mode).
+
+The AES implementation uses AES-NI when available (on x86 and x86-64
+architecture), but fallback gracefully to a software C implementation.
+
+The software implementation uses S-Boxes, which might suffer for cache timing
+issues.  However do notes that most other known software implementations,
+including very popular one (openssl, gnutls) also uses similar
+implementation.  If it matters for your case, you should make sure you have
+AES-NI available, or you'll need to use a different implementation.")
+    (license license:bsd-3)))