Index: head/security/2fa/Makefile
===================================================================
--- head/security/2fa/Makefile
+++ head/security/2fa/Makefile
@@ -0,0 +1,32 @@
+# $FreeBSD$
+
+PORTNAME=	2fa
+DISTVERSION=	g20171122
+CATEGORIES=	security
+
+MAINTAINER=	dg@syrec.org
+COMMENT=	Two-factor authentication on the command line
+
+LICENSE=	BSD3CLAUSE
+LICENSE_FILE=	${WRKSRC}/LICENSE
+
+BUILD_DEPENDS=	go:lang/go
+
+USE_GITHUB=	yes
+GH_ACCOUNT=	rsc
+GH_TAGNAME=	c9558c5
+
+OPTIONS_DEFINE=	DOCS
+
+PLIST_FILES=	bin/2fa
+PORTDOCS=	README.md
+
+do-build:
+	@cd ${WRKSRC} && ${SETENV} GOPATH=${WRKSRC} go build -o ${PORTNAME}
+
+do-install:
+	${INSTALL_PROGRAM} ${WRKSRC}/${PORTNAME} ${STAGEDIR}${PREFIX}/bin
+	@${MKDIR} ${STAGEDIR}${DOCSDIR}
+	${INSTALL_DATA} ${PORTDOCS:S|^|${WRKSRC}/|} ${STAGEDIR}${DOCSDIR}
+
+.include <bsd.port.mk>
Index: head/security/2fa/distinfo
===================================================================
--- head/security/2fa/distinfo
+++ head/security/2fa/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1511500933
+SHA256 (rsc-2fa-g20171122-c9558c5_GH0.tar.gz) = bb69f6774b991023256c3e69ed270f046d74886d1cf31c56edd810bb31a0b658
+SIZE (rsc-2fa-g20171122-c9558c5_GH0.tar.gz) = 4248
Index: head/security/2fa/pkg-descr
===================================================================
--- head/security/2fa/pkg-descr
+++ head/security/2fa/pkg-descr
@@ -0,0 +1,3 @@
+2fa is a command-line two-factor authentication agent.
+
+WWW: https://github.com/rsc/2fa
Index: head/security/Makefile
===================================================================
--- head/security/Makefile
+++ head/security/Makefile
@@ -5,6 +5,7 @@
 
     SUBDIR += 0d1n
     SUBDIR += 1password-client
+    SUBDIR += 2fa
     SUBDIR += ADMsmb
     SUBDIR += ADMsnmp
     SUBDIR += R-cran-ROAuth