diff --git a/pkg/libb2/Makefile b/pkg/libb2/Makefile
new file mode 100644
index 0000000000000000000000000000000000000000..16ac11aae1fcdd675190ab72149140931f8d3104
--- /dev/null
+++ b/pkg/libb2/Makefile
@@ -0,0 +1,12 @@
+PKG_NAME = libb2
+PKG_URL = https://github.com/BLAKE2/libb2
+PKG_VERSION = 60ea749837362c226e8501718f505ab138e5c19d # v0.98
+PKG_LICENSE = CC0-1.0
+
+.PHONY: all
+
+all: git-download
+ "$(MAKE)" -C $(PKG_BUILDDIR)/src \
+ -f $(RIOTPKG)/libb2/Makefile.$(PKG_NAME)
+
+include $(RIOTBASE)/pkg/pkg.mk
diff --git a/pkg/libb2/Makefile.include b/pkg/libb2/Makefile.include
new file mode 100644
index 0000000000000000000000000000000000000000..46c0687c0b919d88e6ad97e4dd7590953f89ba82
--- /dev/null
+++ b/pkg/libb2/Makefile.include
@@ -0,0 +1,2 @@
+INCLUDES += -I$(PKGDIRBASE)/libb2/src
+INCLUDES += -I$(RIOTPKG)/libb2/include
diff --git a/pkg/libb2/Makefile.libb2 b/pkg/libb2/Makefile.libb2
new file mode 100644
index 0000000000000000000000000000000000000000..ec993728f8e345203915eaae0f6ed894bdf8e24c
--- /dev/null
+++ b/pkg/libb2/Makefile.libb2
@@ -0,0 +1,11 @@
+MODULE = libb2
+
+# Compiling for native triggers this warning
+CFLAGS += -Wno-unused-function
+
+SRC := blake2s-ref.c \
+ blake2b-ref.c \
+ blake2sp.c \
+ blake2bp.c
+
+include $(RIOTBASE)/Makefile.base
diff --git a/pkg/libb2/doc.txt b/pkg/libb2/doc.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7298bc9dfdc772ce5ec67205815993bb4311af01
--- /dev/null
+++ b/pkg/libb2/doc.txt
@@ -0,0 +1,37 @@
+/**
+ * @defgroup pkg_libb2 BLAKE2 hashing library
+ * @ingroup pkg
+ * @brief C library providing BLAKE2b, BLAKE2s, BLAKE2bp, BLAKE2sp
+
+ *
+ * # BLAKE2 RIOT package
+ *
+ * BLAKE2 is a cryptographic hash function specified in RFC 7693.
+ * It claims to be faster than MD5, SHA-1, SHA-2, and SHA-3, yet at least as
+ * secure as the latest standard SHA-3.
+ *
+ * BLAKE2 comes in two flavors:
+ *
+ * - BLAKE2b (or just BLAKE2) is optimized for 64-bit platforms—including NEON-enabled ARMs—and
+ * produces digests of any size between 1 and 64 bytes
+ * - BLAKE2s is optimized for 8- to 32-bit platforms and produces digests of
+ * any size between 1 and 32 bytes
+ *
+ * For more information, see the [BLAKE2 website](https://blake2.net/).
+ *
+ * ## Usage
+ *
+ * Add it as a package in your application's Makefile:
+ *
+ * ```makefile
+ * USEPKG += libb2
+ * ```
+ *
+ * Include the BLAKE2 header in your code:
+ *
+ * ```c
+ * #include "blake2.h"
+ * ```
+ *
+ * @see https://github.com/BLAKE2/libb2
+ */
diff --git a/pkg/libb2/include/config.h b/pkg/libb2/include/config.h
new file mode 100644
index 0000000000000000000000000000000000000000..55cc6a0e8e5b33e3855e612fc35b8e734831342b
--- /dev/null
+++ b/pkg/libb2/include/config.h
@@ -0,0 +1,19 @@
+#ifndef CONFIG_H
+#define CONFIG_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Add no suffix to the functions */
+#define SUFFIX
+
+/* Test for a little-endian machine */
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+#define NATIVE_LITTLE_ENDIAN
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* CONFIG_H */
diff --git a/tests/pkg_libb2/Makefile b/tests/pkg_libb2/Makefile
new file mode 100644
index 0000000000000000000000000000000000000000..c7bd172537fd70cf9df5e881e0a56169c7985023
--- /dev/null
+++ b/tests/pkg_libb2/Makefile
@@ -0,0 +1,14 @@
+include ../Makefile.tests_common
+
+# BLAKE2s + BLAKE2 is too big for these boards
+BOARD_INSUFFICIENT_MEMORY := arduino-duemilanove arduino-uno chronos \
+ mega-xplained msb-430 msb-430h nucleo-f031k6 \
+ nucleo-f042k6 nucleo-l031k6 telosb waspmote-pro \
+ wsn430-v1_3b wsn430-v1_4 z1
+
+TEST_ON_CI_WHITELIST += all
+
+USEPKG += libb2
+USEMODULE += embunit
+
+include $(RIOTBASE)/Makefile.include
diff --git a/tests/pkg_libb2/main.c b/tests/pkg_libb2/main.c
new file mode 100644
index 0000000000000000000000000000000000000000..1ac0d2c432c73c678ada7eaf8fee0dd77466f2ea
--- /dev/null
+++ b/tests/pkg_libb2/main.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2018 Silke Hofstra
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup tests
+ * @{
+ *
+ * @file
+ * @brief Test the libb2 package
+ *
+ * @author Silke Hofstra <silke@slxh.eu>
+ *
+ * @}
+ */
+
+#include <string.h>
+#include "embUnit.h"
+#include "blake2.h"
+
+const uint8_t msg[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+ 0x08, 0x09, 0x0a, 0x0b, 0x0c };
+const uint8_t key[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+ 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+ 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
+ 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
+ 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
+ 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
+ 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
+ 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f };
+const uint8_t b2s[] = { 0xf5, 0xc4, 0xbe, 0xc6, 0xd6, 0x2f, 0xc6, 0x08,
+ 0xbf, 0x41, 0xcc, 0x11, 0x5f, 0x16, 0xd6, 0x1c,
+ 0x7e, 0xfd, 0x3f, 0xf6, 0xc6, 0x56, 0x92, 0xbb,
+ 0xe0, 0xaf, 0xff, 0xb1, 0xfe, 0xde, 0x74, 0x75 };
+const uint8_t b2b[] = { 0x43, 0xd4, 0x4b, 0xfa, 0x18, 0x76, 0x8c, 0x59,
+ 0x89, 0x6b, 0xf7, 0xed, 0x17, 0x65, 0xcb, 0x2d,
+ 0x14, 0xaf, 0x8c, 0x26, 0x02, 0x66, 0x03, 0x90,
+ 0x99, 0xb2, 0x5a, 0x60, 0x3e, 0x4d, 0xdc, 0x50,
+ 0x39, 0xd6, 0xef, 0x3a, 0x91, 0x84, 0x7d, 0x10,
+ 0x88, 0xd4, 0x01, 0xc0, 0xc7, 0xe8, 0x47, 0x78,
+ 0x1a, 0x8a, 0x59, 0x0d, 0x33, 0xa3, 0xc6, 0xcb,
+ 0x4d, 0xf0, 0xfa, 0xb1, 0xc2, 0xf2, 0x23, 0x55 };
+
+/* Test BLAKE2s */
+static void test_blake2s(void)
+{
+ uint8_t hash[BLAKE2S_OUTBYTES];
+ int res = blake2s(hash, msg, key,
+ sizeof hash, sizeof msg, BLAKE2S_KEYBYTES);
+
+ TEST_ASSERT(res == 0);
+ TEST_ASSERT(memcmp(b2s, hash, sizeof hash) == 0);
+}
+
+/* Test BLAKE2b */
+static void test_blake2b(void)
+{
+ uint8_t hash[BLAKE2B_OUTBYTES];
+ int res = blake2b(hash, msg, key,
+ sizeof hash, sizeof msg, BLAKE2B_KEYBYTES);
+
+ TEST_ASSERT(res == 0);
+ TEST_ASSERT(memcmp(b2b, hash, sizeof hash) == 0);
+}
+
+Test *tests_blake2(void)
+{
+ EMB_UNIT_TESTFIXTURES(fixtures) {
+ new_TestFixture(test_blake2s),
+ new_TestFixture(test_blake2b),
+ };
+ EMB_UNIT_TESTCALLER(blake2_tests, NULL, NULL, fixtures);
+ return (Test *)&blake2_tests;
+}
+
+int main(void)
+{
+ TESTS_START();
+ TESTS_RUN(tests_blake2());
+ TESTS_END();
+ return 0;
+}
diff --git a/tests/pkg_libb2/tests/01-run.py b/tests/pkg_libb2/tests/01-run.py
new file mode 100755
index 0000000000000000000000000000000000000000..36a1bc15fc8d23e16c94a994d0724acd75d43dc8
--- /dev/null
+++ b/tests/pkg_libb2/tests/01-run.py
@@ -0,0 +1,18 @@
+#!/usr/bin/env python3
+
+# Copyright (C) 2017 Freie Universität Berlin
+#
+# This file is subject to the terms and conditions of the GNU Lesser
+# General Public License v2.1. See the file LICENSE in the top level
+# directory for more details.
+
+import sys
+from testrunner import run
+
+
+def testfunc(child):
+ child.expect_exact('OK (2 tests)')
+
+
+if __name__ == "__main__":
+ sys.exit(run(testfunc))