From 37278b3bfc64cd41b3992078a72d20b5e52dd475 Mon Sep 17 00:00:00 2001
From: Ben Harris <bjh21@bjh21.me.uk>
Date: Wed, 19 Jan 2005 23:30:38 +0000
Subject: [PATCH] Add an assertion so that short-rsa2-key-crash at least avoids
 segfaulting while we come up with a better solution.

[originally from svn r5146]
---
 sshrsa.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sshrsa.c b/sshrsa.c
index baec83e0..4f95fb38 100644
--- a/sshrsa.c
+++ b/sshrsa.c
@@ -802,6 +802,7 @@ static unsigned char *rsa2_sign(void *key, char *data, int datalen,
     SHA_Simple(data, datalen, hash);
 
     nbytes = (bignum_bitcount(rsa->modulus) - 1) / 8;
+    assert(1 <= nbytes - 20 - ASN1_LEN);
     bytes = snewn(nbytes, unsigned char);
 
     bytes[0] = 1;