1 files changed, 36 insertions, 0 deletions
diff --git a/regress/ssh2putty.sh b/regress/ssh2putty.sh
new file mode 100755
index 0000000..9b08310
--- /dev/null
+++ b/regress/ssh2putty.sh
@@ -0,0 +1,36 @@
+#!/bin/sh
+#	$OpenBSD: ssh2putty.sh,v 1.9 2021/07/25 12:13:03 dtucker Exp $
+
+if test "x$1" = "x" -o "x$2" = "x" -o "x$3" = "x" ; then
+	echo "Usage: ssh2putty hostname port ssh-private-key"
+	exit 1
+fi
+
+HOST=$1
+PORT=$2
+KEYFILE=$3
+
+OPENSSL_BIN="${OPENSSL_BIN:-openssl}"
+
+# XXX - support DSA keys too
+if grep "BEGIN RSA PRIVATE KEY" $KEYFILE >/dev/null 2>&1 ; then
+	:
+else
+	echo "Unsupported private key format"
+	exit 1
+fi
+
+public_exponent=`
+	$OPENSSL_BIN rsa -noout -text -in $KEYFILE | grep ^publicExponent |
+	sed 's/.*(//;s/).*//'
+`
+test $? -ne 0 && exit 1
+
+modulus=`
+	$OPENSSL_BIN rsa -noout -modulus -in $KEYFILE | grep ^Modulus= |
+	sed 's/^Modulus=/0x/' | tr A-Z a-z
+`
+test $? -ne 0 && exit 1
+
+echo "rsa2@$PORT:$HOST $public_exponent,$modulus"
+