From 4539091af9bfdcc873e2089301b7d1749050d60f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Niels=20M=C3=B6ller?= <nisse@lysator.liu.se>
Date: Sun, 13 Jan 2019 10:48:26 +0100
Subject: [PATCH] eccdata: More asserts in ecc_pippenger_precompute.
---
eccdata.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/eccdata.c b/eccdata.c
index d67ca0df..fa7a11c5 100644
--- a/eccdata.c
+++ b/eccdata.c
@@ -674,12 +674,16 @@ ecc_pippenger_precompute (struct ecc_curve *ecc, unsigned k, unsigned c)
for (j = 2; j < (1U<<c); j <<= 1)
{
/* T[j] = 2^k T[j/2] */
+ assert (j < ecc->table_size);
ecc_dup (ecc, &ecc->table[j], &ecc->table[j/2]);
for (i = 1; i < k; i++)
ecc_dup (ecc, &ecc->table[j], &ecc->table[j]);
for (i = 1; i < j; i++)
- ecc_add (ecc, &ecc->table[j + i], &ecc->table[j], &ecc->table[i]);
+ {
+ assert (j + i < ecc->table_size);
+ ecc_add (ecc, &ecc->table[j + i], &ecc->table[j], &ecc->table[i]);
+ }
}
for (j = 1<<c; j < ecc->table_size; j++)
{
--
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