1#!/bin/sh
2#	$OpenBSD: ssh2putty.sh,v 1.5 2019/11/21 05:18:47 tb Exp $
3
4if test "x$1" = "x" -o "x$2" = "x" -o "x$3" = "x" ; then
5	echo "Usage: ssh2putty hostname port ssh-private-key"
6	exit 1
7fi
8
9HOST=$1
10PORT=$2
11KEYFILE=$3
12
13# XXX - support DSA keys too
14if grep "BEGIN RSA PRIVATE KEY" $KEYFILE >/dev/null 2>&1 ; then
15	:
16else
17	echo "Unsupported private key format"
18	exit 1
19fi
20
21public_exponent=`
22	openssl rsa -noout -text -in $KEYFILE | grep ^publicExponent |
23	sed 's/.*(//;s/).*//'
24`
25test $? -ne 0 && exit 1
26
27modulus=`
28	openssl rsa -noout -modulus -in $KEYFILE | grep ^Modulus= |
29	sed 's/^Modulus=/0x/' | tr A-Z a-z
30`
31test $? -ne 0 && exit 1
32
33echo "rsa2@$PORT:$HOST $public_exponent,$modulus"
34
35