From 64e8603cf9790aa4419d0f2746671bd242e6344d Mon Sep 17 00:00:00 2001 From: Guilhem Moulin Date: Tue, 26 May 2015 00:55:19 +0200 Subject: logjam mitigation. --- roles/common/files/usr/local/bin/gendhparam.sh | 13 +++++++++++++ roles/common/files/usr/local/bin/genkeypair.sh | 4 ++-- 2 files changed, 15 insertions(+), 2 deletions(-) create mode 100755 roles/common/files/usr/local/bin/gendhparam.sh (limited to 'roles/common/files/usr') diff --git a/roles/common/files/usr/local/bin/gendhparam.sh b/roles/common/files/usr/local/bin/gendhparam.sh new file mode 100755 index 0000000..074986b --- /dev/null +++ b/roles/common/files/usr/local/bin/gendhparam.sh @@ -0,0 +1,13 @@ +#!/bin/sh + +set -ue +PATH=/usr/bin:/bin + +privkey="$1" +bits="${2:-2048}" +rand= + +mv -f "$(mktemp)" "$privkey" +chmod og-rwx "$privkey" + +openssl dhparam -rand "${rand:-/dev/urandom}" "$bits" >"$privkey" diff --git a/roles/common/files/usr/local/bin/genkeypair.sh b/roles/common/files/usr/local/bin/genkeypair.sh index d6539e2..982c1d9 100755 --- a/roles/common/files/usr/local/bin/genkeypair.sh +++ b/roles/common/files/usr/local/bin/genkeypair.sh @@ -37,6 +37,7 @@ cn= usage= chmod= chown= +rand= usage() { cat >&2 <<- EOF @@ -123,7 +124,6 @@ while [ $# -gt 0 ]; do shift; done -rand=/dev/urandom case "$type" in # XXX: genrsa and dsaparam have been deprecated in favor of genpkey. # genpkey can also create explicit EC parameters, but not named. @@ -184,7 +184,7 @@ elif [ ! -s "$privkey" -o $force -ge 2 ]; then mv -f "$(mktemp)" "$privkey" || exit 2 chmod "${chmod:-og-rwx}" "$privkey" || exit 2 [ -z "$chown" ] || chown "$chown" "$privkey" || exit 2 - openssl $genkey -rand /dev/urandom $genkeyargs >"$privkey" || exit 2 + openssl $genkey -rand "${rand:-/dev/urandom}" $genkeyargs >"$privkey" || exit 2 [ "$cmd" = dkim ] && { dkiminfo; exit; } fi -- cgit v1.2.3