diff --git a/security/libb2/Makefile b/security/libb2/Makefile
new file mode 100644
index 00000000000..67df831d47a
--- /dev/null
+++ b/security/libb2/Makefile
@@ -0,0 +1,37 @@
+# $OpenBSD: Makefile,v 1.1.1.1 2018/01/01 15:40:55 bcallah Exp $
+
+COMMENT =	library providing BLAKE2b, BLAKE2s, BLAKE2bp, BLAKE2sp
+DISTNAME =	libb2-0.98.20171225
+CATEGORIES =	security
+
+SHARED_LIBS +=	b2                        0.0 # 1.3
+
+# No GH_TAGNAME
+GH_ACCOUNT =	BLAKE2
+GH_PROJECT =	libb2
+GH_COMMIT =	60ea749837362c226e8501718f505ab138e5c19d
+
+MAINTAINER =	Bjorn Ketelaars <bjorn.ketelaars@hydroxide.nl>
+
+# CC0
+PERMIT_PACKAGE_CDROM =	Yes
+
+BUILD_DEPENDS =		${MODGNU_AUTOCONF_DEPENDS} \
+			${MODGNU_AUTOMAKE_DEPENDS} \
+			devel/libtool
+
+CONFIGURE_STYLE =	gnu
+CONFIGURE_ARGS =	--disable-fat \
+			--disable-native \
+			--disable-openmp
+
+SEPARATE_BUILD =	Yes
+
+AUTOCONF_VERSION =	2.69
+AUTOMAKE_VERSION =	1.15
+
+pre-configure:
+	cd ${WRKSRC} && ${SETENV} AUTOCONF_VERSION=${AUTOCONF_VERSION} \
+		AUTOMAKE_VERSION=${AUTOMAKE_VERSION} ./autogen.sh
+
+.include <bsd.port.mk>
diff --git a/security/libb2/distinfo b/security/libb2/distinfo
new file mode 100644
index 00000000000..db070f9c69f
--- /dev/null
+++ b/security/libb2/distinfo
@@ -0,0 +1,2 @@
+SHA256 (libb2-0.98.20171225-60ea7498.tar.gz) = hFPmDkOFj1DIsdroNJEzyl/mzA4PeLWIFl/AVTtMGnk=
+SIZE (libb2-0.98.20171225-60ea7498.tar.gz) = 275231
diff --git a/security/libb2/patches/patch-configure_ac b/security/libb2/patches/patch-configure_ac
new file mode 100644
index 00000000000..b54ddbaaa78
--- /dev/null
+++ b/security/libb2/patches/patch-configure_ac
@@ -0,0 +1,15 @@
+$OpenBSD: patch-configure_ac,v 1.1.1.1 2018/01/01 15:40:55 bcallah Exp $
+
+Do not hardcode optimization flags.
+
+Index: configure.ac
+--- configure.ac.orig
++++ configure.ac
+@@ -58,7 +58,6 @@ AC_HELP_STRING([--enable-native],
+                [enable_native=yes]
+ )
+ 
+-AX_CHECK_COMPILE_FLAG([-O3], [CFLAGS=-O3])
+ dnl Not all architectures support -march=native
+ AX_CHECK_COMPILE_FLAG([-march=native], [], [enable_native=no])
+ 
diff --git a/security/libb2/pkg/DESCR b/security/libb2/pkg/DESCR
new file mode 100644
index 00000000000..07ff42558f4
--- /dev/null
+++ b/security/libb2/pkg/DESCR
@@ -0,0 +1,5 @@
+libb2 is a C library providing BLAKE2b, BLAKE2s, BLAKE2bp, BLAKE2sp.
+
+BLAKE2 is a cryptographic hash function faster than MD5, SHA-1, SHA-2,
+and SHA-3, yet is at least as secure as the latest standard SHA-3.
+BLAKE2 is specified in RFC 7693.
diff --git a/security/libb2/pkg/PLIST b/security/libb2/pkg/PLIST
new file mode 100644
index 00000000000..6427c21f906
--- /dev/null
+++ b/security/libb2/pkg/PLIST
@@ -0,0 +1,5 @@
+@comment $OpenBSD: PLIST,v 1.1.1.1 2018/01/01 15:40:55 bcallah Exp $
+include/blake2.h
+lib/libb2.a
+lib/libb2.la
+@lib lib/libb2.so.${LIBb2_VERSION}