diff --git a/README.md b/README.md
index 1a7bfd6..fae015a 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # argon2
 
+A password-hashing function (reference C implementation).
+
diff --git a/argon2.spec b/argon2.spec
new file mode 100644
index 0000000..11b7ec6
--- /dev/null
+++ b/argon2.spec
@@ -0,0 +1,75 @@
+Name:          argon2
+Version:       20190702
+Release:       1mamba
+Summary:       A password-hashing function (reference C implementation)
+Group:         Applications/Security
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           https://github.com/P-H-C/phc-winner-argon2
+Source:        https://github.com/P-H-C/phc-winner-argon2.git/%{version}/phc-winner-argon2-%{version}.tar.bz2
+License:       Apache License 2.0, CC0 License
+## AUTOBUILDREQ-BEGIN
+BuildRequires: glibc-devel
+## AUTOBUILDREQ-END
+Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
+
+%description
+A password-hashing function (reference C implementation).
+
+%package -n lib%{name}
+Group:         System/Libraries
+Summary:       Shared libraries for %{name}
+
+%description -n lib%{name}
+This package contains shared libraries for %{name}.
+
+%package -n lib%{name}-devel
+Group:         Development/Libraries
+Summary:       Development files for %{name}
+Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
+Requires:      pkg-config
+
+%description -n lib%{name}-devel
+This package contains libraries and header files for developing applications that use %{name}.
+
+
+%debug_package
+
+%prep
+%setup -q -n phc-winner-%{name}-%{version}
+
+%build
+%make ARGON2_VERSION="%{version}" OPTTARGET='none' LIBRARY_REL='%{_lib}' 
+
+%install
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+%makeinstall ARGON2_VERSION="%{version}" OPTTARGET='none' LIBRARY_REL='%{_lib}' 
+
+%clean
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+%post -n lib%{name} -p /sbin/ldconfig
+%postun -n lib%{name} -p /sbin/ldconfig
+
+%files
+%defattr(-,root,root)
+%{_bindir}/argon2
+
+%files -n lib%{name}
+%defattr(-,root,root)
+%{_libdir}/libargon2.so.*
+%doc LICENSE
+
+%files -n lib%{name}-devel
+%defattr(-,root,root)
+%{_includedir}/argon2.h
+%{_libdir}/libargon2.a
+%{_libdir}/libargon2.so
+%{_libdir}/pkgconfig/libargon2.pc
+%doc README.md
+
+
+%changelog
+* Thu Jan 26 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 20190702-1mamba
+- package created using the webbuild interface