diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ca79609
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/argon2_0.2-0.tar.gz
diff --git a/0001-Build-against-system-libraries.patch b/0001-Build-against-system-libraries.patch
new file mode 100644
index 0000000..e1680c1
--- /dev/null
+++ b/0001-Build-against-system-libraries.patch
@@ -0,0 +1,88 @@
+From 1fef97eb3dfa1b7e3a88884b2eb448ad7f47363c Mon Sep 17 00:00:00 2001
+From: Elliott Sales de Andrade <quantum.analyst@gmail.com>
+Date: Mon, 26 Mar 2018 01:33:04 -0400
+Subject: [PATCH] Build against system libraries.
+
+Signed-off-by: Elliott Sales de Andrade <quantum.analyst@gmail.com>
+---
+ src/Makevars      | 14 +++-----------
+ src/argon2.c      |  2 +-
+ src/blake2.c      |  4 ++--
+ src/raw_as_char.c |  1 -
+ 4 files changed, 6 insertions(+), 15 deletions(-)
+
+diff --git a/src/Makevars b/src/Makevars
+index 3f6df55..7b82ba7 100644
+--- a/src/Makevars
++++ b/src/Makevars
+@@ -1,17 +1,9 @@
+-PKG_CFLAGS = $(SHLIB_OPENMP_CFLAGS)
+-PKG_LIBS = $(SHLIB_OPENMP_CFLAGS)
+-
+-ARGON2_OBJS = \
+-	argon2/blake2/blake2b.o \
+-	argon2/argon2.o \
+-	argon2/core.o \
+-	argon2/encoding.o \
+-	argon2/ref.o \
+-	argon2/thread.o
++PKG_CFLAGS = $(shell pkg-config --cflags libargon2) $(SHLIB_OPENMP_CFLAGS)
++PKG_LIBS = $(shell pkg-config --libs libargon2) -lb2 $(SHLIB_OPENMP_CFLAGS)
+ 
+ R_OBJS = argon2_native.o argon2.o blake2.o gen_nonce.o raw_as_char.o
+ 
+-OBJECTS = $(ARGON2_OBJS) $(R_OBJS)
++OBJECTS = $(R_OBJS)
+ 
+ all: $(SHLIB)
+ 
+diff --git a/src/argon2.c b/src/argon2.c
+index e5099a7..46ff6ba 100644
+--- a/src/argon2.c
++++ b/src/argon2.c
+@@ -26,7 +26,7 @@
+ 
+ 
+ #include "common.h"
+-#include "argon2/argon2.h"
++#include "argon2.h"
+ 
+ #define CHECKRET(check) if (check != ARGON2_OK) error("%s\n", argon2_error_message(check))
+ 
+diff --git a/src/blake2.c b/src/blake2.c
+index 286bed1..a8e91ae 100644
+--- a/src/blake2.c
++++ b/src/blake2.c
+@@ -26,7 +26,7 @@
+ 
+ 
+ #include "common.h"
+-#include "argon2/blake2/blake2.h"
++#include "blake2.h"
+ 
+ #define HASHLEN 64
+ 
+@@ -81,7 +81,7 @@ SEXP R_blake2b(SEXP in_, SEXP key_)
+   PROTECT(ret = allocVector(RAWSXP, HASHLEN));
+   uchar_t *const hash = RAW(ret);
+   
+-  blake2b(hash, HASHLEN, in, inlen, key, keylen);
++  blake2b(hash, in, key, HASHLEN, inlen, keylen);
+   
+   UNPROTECT(1);
+   return ret;
+diff --git a/src/raw_as_char.c b/src/raw_as_char.c
+index 3ea80cd..67fc383 100644
+--- a/src/raw_as_char.c
++++ b/src/raw_as_char.c
+@@ -30,7 +30,6 @@
+ #include <stdint.h>
+ 
+ #include "common.h"
+-#include "argon2/blake2/blake2.h"
+ 
+ 
+ SEXP R_raw_as_char(SEXP rawvec_, SEXP upper_, SEXP spaces_)
+-- 
+2.14.3
+
diff --git a/R-argon2.spec b/R-argon2.spec
new file mode 100644
index 0000000..043564f
--- /dev/null
+++ b/R-argon2.spec
@@ -0,0 +1,79 @@
+%global packname  argon2
+%global rlibdir  %{_libdir}/R/library
+
+
+Name:             R-%{packname}
+Version:          0.2.0
+Release:          1%{?dist}
+Summary:          Secure Password Hashing
+
+License:          BSD
+URL:              https://cran.r-project.org/web/packages/%{packname}/index.html
+Source0:          https://cran.r-project.org/src/contrib/%{packname}_0.2-0.tar.gz
+Patch0001:        0001-Build-against-system-libraries.patch
+
+# Here's the R view of the dependencies world:
+# Depends:
+# Imports:
+# Suggests:
+# LinkingTo:
+# Enhances:
+
+BuildRequires:    R-devel tex(latex)
+BuildRequires:    libargon2-devel >= 20161029
+BuildRequires:    libb2-devel
+
+%description
+Utilities for secure password hashing via the argon2 algorithm. It is a
+relatively new hashing algorithm and is believed to be very secure. The
+'argon2' implementation included in the package is the reference
+implementation.  The package also includes some utilities that should be
+useful for digest authentication, including a wrapper of 'blake2b'.  For
+similar R packages, see sodium and 'bcrypt'.  See
+<https://en.wikipedia.org/wiki/Argon2> or
+<https://eprint.iacr.org/2015/430.pdf> for more information.
+
+
+%prep
+%setup -q -c -n %{packname}
+
+# Delete bundled libraries.
+pushd %{packname}
+rm -r src/argon2
+%patch0001 -p1
+popd
+
+
+%build
+
+
+%install
+mkdir -p %{buildroot}%{rlibdir}
+%{_bindir}/R CMD INSTALL -l %{buildroot}%{rlibdir} %{packname}
+test -d %{packname}/src && (cd %{packname}/src; rm -f *.o *.so)
+rm -f %{buildroot}%{rlibdir}/R.css
+
+
+%check
+%{_bindir}/R CMD check %{packname}
+
+
+%files
+%dir %{rlibdir}/%{packname}
+%doc %{rlibdir}/%{packname}/html
+%{rlibdir}/%{packname}/DESCRIPTION
+%doc %{rlibdir}/%{packname}/CITATION
+%license %{rlibdir}/%{packname}/COPYRIGHTS
+%license %{rlibdir}/%{packname}/LICENSE
+%{rlibdir}/%{packname}/INDEX
+%{rlibdir}/%{packname}/NAMESPACE
+%{rlibdir}/%{packname}/Meta
+%{rlibdir}/%{packname}/R
+%{rlibdir}/%{packname}/help
+%dir %{rlibdir}/%{packname}/libs
+%{rlibdir}/%{packname}/libs/%{packname}.so
+
+
+%changelog
+* Sat Mar 17 2018 Elliott Sales de Andrade <quantum.analyst@gmail.com> 0.2.0-1
+- initial package for Fedora
diff --git a/README.md b/README.md
deleted file mode 100644
index e9ef206..0000000
--- a/README.md
+++ /dev/null
@@ -1,3 +0,0 @@
-# R-argon2
-
-The R-argon2 package
\ No newline at end of file
diff --git a/sources b/sources
new file mode 100644
index 0000000..0b4d950
--- /dev/null
+++ b/sources
@@ -0,0 +1 @@
+SHA512 (argon2_0.2-0.tar.gz) = 2889b2a60c7d067fce712618bc9355f759fd00003c6c9d4ce99deb9fe63607a383502ddf3905fe24754234cc978aed7274e6aa2b3ff2930e4b75a40931be601d