1#!/bin/sh 2# $OpenBSD: ssh2putty.sh,v 1.10 2025/05/06 06:05:48 djm 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=$3 12 13OPENSSL_BIN="${OPENSSL_BIN:-openssl}" 14 15if grep "BEGIN RSA PRIVATE KEY" $KEYFILE >/dev/null 2>&1 ; then 16 : 17else 18 echo "Unsupported private key format" 19 exit 1 20fi 21 22public_exponent=` 23 $OPENSSL_BIN rsa -noout -text -in $KEYFILE | grep ^publicExponent | 24 sed 's/.*(//;s/).*//' 25` 26test $? -ne 0 && exit 1 27 28modulus=` 29 $OPENSSL_BIN rsa -noout -modulus -in $KEYFILE | grep ^Modulus= | 30 sed 's/^Modulus=/0x/' | tr A-Z a-z 31` 32test $? -ne 0 && exit 1 33 34echo "rsa2@$PORT:$HOST $public_exponent,$modulus" 35 36