xref: /openbsd-src/usr.bin/ssh/moduli-gen/moduli-gen.sh (revision 42701138bac843f4b269dce118de0daf60e59976)
1#!/bin/sh
2#	$OpenBSD: moduli-gen.sh,v 1.5 2020/02/27 02:32:37 dtucker Exp $
3#
4
5srcdir="$1"
6objdir="$2"
7bits="$3"
8
9moduli_sieved=${objdir}/moduli.${bits}.sieved.gz
10moduli_tested=${objdir}/moduli.${bits}.tested
11moduli_part=${srcdir}/moduli.${bits}
12
13if [ ! -d ${objdir} ]; then
14	mkdir ${objdir}
15fi
16
17if [ -f ${moduli_part} ]; then
18	exit 0
19fi
20
21if [ ! -f ${moduli_sieved} ]; then
22	for i in 0 1;
23		do ssh-keygen -M generate -O bits=${bits} /dev/stdout;
24	done | gzip -9c >${moduli_sieved}.tmp && \
25	mv ${moduli_sieved}.tmp ${moduli_sieved}
26fi
27
28lines=`gzip -dc ${moduli_sieved} | wc -l`
29lines=`echo $lines`  # remove leading space
30
31gzip -dc ${moduli_sieved} | \
32    ssh-keygen -M screen -O checkpoint=${moduli_tested}.ckpt \
33        -O lines=${lines} ${moduli_tested} && \
34    mv ${objdir}/moduli.${bits}.tested ${srcdir}/moduli.${bits}
35
36exit 0
37