From: Niels Möller <nisse@lysator.liu.se>
Date: Fri, 15 Nov 2002 23:23:04 +0000 (+0100)
Subject: (nettle_mpz_set_sexp): In the first check against
X-Git-Tag: nettle_1.7_release_20030311~123
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=093e19c07e1812f8dcd52eb4b18f48ab85778a69;p=thirdparty%2Fnettle.git

(nettle_mpz_set_sexp): In the first check against
limit, added some margin to allow for sign octets.

Rev: src/nettle/sexp2bignum.c:1.3
---

diff --git a/sexp2bignum.c b/sexp2bignum.c
index 69757cee..f7ef6884 100644
--- a/sexp2bignum.c
+++ b/sexp2bignum.c
@@ -38,10 +38,12 @@ nettle_mpz_set_sexp(mpz_t x, unsigned limit, const struct sexp_iterator *i)
       && i->atom_length
       && !i->display)
     {
-      if (limit && (8 * i->atom_length > limit))
+      /* Allow some extra here, for leading sign octets. */
+      if (limit && (8 * i->atom_length > (16 + limit)))
 	return 0;
       
       nettle_mpz_set_str_256_s(x, i->atom_length, i->atom);
+      /* FIXME: How to interpret a limit for negative numbers? */
       return !limit || mpz_sizeinbase(x, 2) <= limit;
     }
   else