[PATCH] Add argon2.

[Lukas Gradl]

Hello Guix,

Attached is a patch to add the password hashing library Argon2.  It is a
dependency for opendht.

The source tree contains the directory "blake2".  At first I thought
this is a bundled version of blake2, but it seems that this is a
seperate implementation.  The sources bundled with Argon2 are
significantly different from the ones at
https://github.com/BLAKE2/BLAKE2.
My conclusion is that this is a Blake2 implementation made by and for
Argon2.  Thus I did not unbundle it.  Do you agree with this?

Thank you!
Best,
Lukas


>From ba263b4a49d1acf83e4e42d1e9e0d51572268928 Mon Sep 17 00:00:00 2001
From: Lukas Gradl <address@hidden>
Date: Sun, 5 Jun 2016 15:35:24 -0500
Subject: [PATCH] gnu: Add argon2.

* gnu/packages/password-utils.scm (argon2): New variable.
---
 gnu/packages/password-utils.scm | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/gnu/packages/password-utils.scm b/gnu/packages/password-utils.scm
index 30ed130..1579821 100644
--- a/gnu/packages/password-utils.scm
+++ b/gnu/packages/password-utils.scm
@@ -5,6 +5,7 @@
 ;;; Copyright © 2016 Christopher Allan Webber <address@hidden>
 ;;; Copyright © 2016 Jessica Tallon <address@hidden>
 ;;; Copyright © 2016 Andreas Enge <address@hidden>
+;;; Copyright © 2016 Lukas Gradl <address@hidden>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -295,3 +296,39 @@ Synchronization is possible using the integrated git 
support, which commits
 changes to your password database to a git repository that can be managed
 through the pass command.")
     (license license:gpl2+)))
+
+(define-public argon2
+  (package
+    (name "argon2")
+    (version "20160406")
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+        (string-append
+         "https://codeload.github.com/P-H-C/phc-winner-";
+         name "/tar.gz/" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0g6wa94sh639xl1qc8z21q43r1mp8y77r1zf8nwx5pfsxd8fmyzv"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:test-target "test"
+       #:make-flags '("CC=gcc")
+       #:phases
+       (modify-phases %standard-phases
+         (delete 'configure)
+         (replace 'install
+           (lambda _
+             (let ((out (assoc-ref %outputs "out")))
+               (install-file "argon2" (string-append out "/bin"))
+               (install-file "libargon2.a" (string-append out "/lib"))
+               (install-file "libargon2.so" (string-append out "/lib"))
+               (copy-recursively "include"
+                                 (string-append out "/include"))))))))
+    (home-page "https://www.argon2.com/";)
+    (synopsis "Password hashing library")
+    (description "Argon2 provides a key derivation function that was declared
+winner of the 2015 Password Hashing Competition.")
+    (license license:cc0)))
-- 
2.7.4