From: Mark Wooding <mdw@distorted.org.uk>
Date: Mon, 22 Dec 2014 20:32:58 +0000 (+0000)
Subject: pub/rsa-recover.c: Fail gracefully if `mpmont_create' fails.
X-Git-Tag: 2.2.0~16
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/catacomb/commitdiff_plain/7a051b72158ef91bc1356cf4f254a92394c93415?ds=inline;hp=-c

pub/rsa-recover.c: Fail gracefully if `mpmont_create' fails.

Otherwise we'll crash and burn if, e.g., `n' is even for some reason.
---

7a051b72158ef91bc1356cf4f254a92394c93415
diff --git a/pub/rsa-recover.c b/pub/rsa-recover.c
index f852f695..bc3eda22 100644
--- a/pub/rsa-recover.c
+++ b/pub/rsa-recover.c
@@ -97,7 +97,7 @@ int rsa_recover(rsa_priv *rp)
 
       /* --- Set up for the exponentiation --- */
 
-      mpmont_create(&mm, rp->n);
+      if (mpmont_create(&mm, rp->n)) goto out;
       m1 = mp_sub(m1, rp->n, mm.r);
 
       /* --- Now for the main loop --- *