diff --git a/development/libb2/README b/development/libb2/README
new file mode 100644
index 0000000000..6c19f3a03c
--- /dev/null
+++ b/development/libb2/README
@@ -0,0 +1,6 @@
+C library providing BLAKE2b, BLAKE2s, BLAKE2bp, and BLAKE2sp.
+
+The cryptographic hash function BLAKE2 is an improved version of the
+SHA-3 finalist BLAKE. Like SHA-3, BLAKE2 offers the highest security,
+yet is fast as MD5 on 64-bit platforms and requires at least 33% less
+RAM than SHA-2 or SHA-3 on low-end systems.
diff --git a/development/libb2/libb2.SlackBuild b/development/libb2/libb2.SlackBuild
new file mode 100644
index 0000000000..979c92ef90
--- /dev/null
+++ b/development/libb2/libb2.SlackBuild
@@ -0,0 +1,99 @@
+#!/bin/sh
+
+# Slackware build script for libb2
+
+# Copyright Manuel Argüelles
+# All rights reserved.
+#
+# Redistribution and use of this script, with or without modification, is
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of this script must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#
+#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
+#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
+#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+PRGNAM=libb2
+VERSION=${VERSION:-0.96}
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+
+if [ -z "$ARCH" ]; then
+  case "$( uname -m )" in
+    i?86) ARCH=i486 ;;
+    arm*) ARCH=arm ;;
+       *) ARCH=$( uname -m ) ;;
+  esac
+fi
+
+CWD=$(pwd)
+TMP=${TMP:-/tmp/SBo}
+PKG=$TMP/package-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+
+if [ "$ARCH" = "i486" ]; then
+  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "i686" ]; then
+  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "x86_64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+else
+  SLKCFLAGS="-O2"
+  LIBDIRSUFFIX=""
+fi
+
+set -e
+
+rm -rf $PKG
+mkdir -p $TMP $PKG $OUTPUT
+cd $TMP
+rm -rf $PRGNAM-$VERSION
+tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
+cd $PRGNAM-$VERSION
+chown -R root:root .
+find -L . \
+ \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
+  -o -perm 511 \) -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
+  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
+
+CFLAGS="$SLKCFLAGS" \
+CXXFLAGS="$SLKCFLAGS" \
+./configure \
+  --prefix=/usr \
+  --libdir=/usr/lib${LIBDIRSUFFIX} \
+  --sysconfdir=/etc \
+  --localstatedir=/var \
+  --mandir=/usr/man \
+  --infodir=/usr/info \
+  --docdir=/usr/doc/$PRGNAM-$VERSION \
+  --enable-static=no \
+  --build=$ARCH-slackware-linux
+
+make
+make install DESTDIR=$PKG
+
+find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
+  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
+
+mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a COPYING $PKG/usr/doc/$PRGNAM-$VERSION
+cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
+
+mkdir -p $PKG/install
+cat $CWD/slack-desc > $PKG/install/slack-desc
+
+cd $PKG
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}
diff --git a/development/libb2/libb2.info b/development/libb2/libb2.info
new file mode 100644
index 0000000000..c3fd581eee
--- /dev/null
+++ b/development/libb2/libb2.info
@@ -0,0 +1,10 @@
+PRGNAM="libb2"
+VERSION="0.96"
+HOMEPAGE="https://blake2.net/"
+DOWNLOAD="https://blake2.net/libb2-0.96.tar.gz"
+MD5SUM="715fc43abd77daf3a229a86bade5bbe9"
+DOWNLOAD_x86_64=""
+MD5SUM_x86_64=""
+REQUIRES=""
+MAINTAINER="Manuel Argüelles"
+EMAIL="manuel.arguelles@gmail.com"
diff --git a/development/libb2/slack-desc b/development/libb2/slack-desc
new file mode 100644
index 0000000000..cfb8164383
--- /dev/null
+++ b/development/libb2/slack-desc
@@ -0,0 +1,19 @@
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.
+# Line up the first '|' above the ':' following the base package name, and
+# the '|' on the right side marks the last column you can put a character in.
+# You must make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':' except on otherwise blank lines.
+
+     |-----handy-ruler------------------------------------------------------|
+libb2: libb2 (C library providing BLAKE2b, BLAKE2s, BLAKE2bp, and BLAKE2sp)
+libb2:
+libb2: Libb2 is the C library of the cryptographic hash function BLAKE2, an
+libb2: improved version of of the SHA-3 finalist BLAKE. Like SHA-3, BLAKE2
+libb2: offers the highest security, yet is fast as MD5 on 64-bit platforms
+libb2: and requires less RAM than SHA-2 or SHA-3 on low-end systems.
+libb2:
+libb2: The core algorithm of BLAKE2 is derived from ChaCha, a stream cipher
+libb2: designed by Daniel J. Bernstein that has been proposed as a standard
+libb2: cipher for TLS.
+libb2: