diff --git a/README.md b/README.md
index d324d5b..fa925a2 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # libb2
 
+C library providing BLAKE2b, BLAKE2s, BLAKE2bp, BLAKE2sp.
+
diff --git a/libb2.spec b/libb2.spec
new file mode 100644
index 0000000..41bd255
--- /dev/null
+++ b/libb2.spec
@@ -0,0 +1,64 @@
+Name:          libb2
+Version:       0.98.1
+Release:       1mamba
+Summary:       C library providing BLAKE2b, BLAKE2s, BLAKE2bp, BLAKE2sp
+Group:         System/Libraries
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           https://github.com/BLAKE2/libb2
+Source:        https://github.com/BLAKE2/libb2.git/v%{version}/libb2-%{version}.tar.bz2
+License:       Common\ Public\ Attribution\ License\ 1.0
+## AUTOBUILDREQ-BEGIN
+## note: run 'autospec -u -a6 libb2' to get the list of build requirements.
+## AUTOBUILDREQ-END
+
+%description
+C library providing BLAKE2b, BLAKE2s, BLAKE2bp, BLAKE2sp.
+
+%package devel
+Group:         Development/Libraries
+Summary:       Development files for %{name}
+Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
+Requires:      pkg-config
+
+%description devel
+This package contains libraries and header files for developing applications that use %{name}.
+
+%debug_package
+
+%prep
+%setup -q
+./autogen.sh
+
+%build
+%configure
+%make
+
+%install
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+%makeinstall
+
+%clean
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+%post -p /sbin/ldconfig
+%postun -p /sbin/ldconfig
+
+%files
+%defattr(-,root,root)
+%{_libdir}/libb2.so.*
+%doc COPYING
+
+%files devel
+%defattr(-,root,root)
+%{_includedir}/blake2.h
+%{_libdir}/libb2.a
+%{_libdir}/libb2.la
+%{_libdir}/libb2.so
+%{_libdir}/pkgconfig/libb2.pc
+%doc README.md
+
+%changelog
+* Wed Apr 07 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 0.98.1-1mamba
+- package created using the webbuild interface