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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages nettle)
+  #:use-module (guix licenses)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system gnu)
+  #:use-module (gnu packages multiprecision)
+  #:use-module (gnu packages m4))
+
+(define-public nettle
+  (package
+    (name "nettle")
+    (version "2.6")
+    (source (origin
+             (method url-fetch)
+             (uri (string-append "mirror://gnu/nettle/nettle-"
+                                 version ".tar.gz"))
+             (sha256
+              (base32
+               "0mminj3fg0vba8qx4q6dbf0xz6fskamli7z2r8rci5xrcd7n5pv0"))))
+    (build-system gnu-build-system)
+    (inputs `(("m4" ,m4)))
+    (propagated-inputs `(("gmp" ,gmp)))
+    (home-page "http://www.lysator.liu.se/~nisse/nettle/")
+    (synopsis "GNU Nettle, a cryptographic library")
+    (description
+     "Nettle is a cryptographic library that is designed to fit easily
+in more or less any context: In crypto toolkits for object-oriented
+languages (C++, Python, Pike, ...), in applications like LSH or GNUPG,
+or even in kernel space.  In most contexts, you need more than the basic
+cryptographic algorithms, you also need some way to keep track of
+available algorithms, their properties and variants.  You often have
+some algorithm selection process, often dictated by a protocol you want
+to implement.
+
+And as the requirements of applications differ in subtle and not so
+subtle ways, an API that fits one application well can be a pain to use
+in a different context.  And that is why there are so many different
+cryptographic libraries around.  \nNettle tries to avoid this problem by
+doing one thing, the low-level crypto stuff, and providing a simple but
+general interface to it.  In particular, Nettle doesn't do algorithm
+selection.  It doesn't do memory allocation. It doesn't do any I/O.")
+    (license gpl2+)))