From: Niels Möller <nisse@lysator.liu.se>
Date: Wed, 25 Jan 2023 13:40:05 +0000 (+0100)
Subject: Fix pointer bug in previous change.
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5e3056ebffb6a82168949034ddcfa854bace4ec6;p=thirdparty%2Fnettle.git

Fix pointer bug in previous change.
---

diff --git a/ocb.c b/ocb.c
index aab6b6b2..fd798d30 100644
--- a/ocb.c
+++ b/ocb.c
@@ -202,12 +202,15 @@ ocb_encrypt (struct ocb_ctx *ctx, const struct ocb_key *key,
   if (length > 0)
     {
       union nettle_block16 block;
-      pad_block (&block, length, src + n*OCB_BLOCK_SIZE);
+
+      src += n*OCB_BLOCK_SIZE; dst += n*OCB_BLOCK_SIZE;
+
+      pad_block (&block, length, src);
       block16_xor (&ctx->checksum, &block);
 
       block16_xor (&ctx->offset, &key->L[0]);
       f (cipher, OCB_BLOCK_SIZE, block.b, ctx->offset.b);
-      memxor3 (dst + n*OCB_BLOCK_SIZE, block.b, src, length);
+      memxor3 (dst, block.b, src, length);
       ctx->message_count++;
     }
 }