From 89b9d4864327b6d05f00ac7b13c1437bae4b47bd Mon Sep 17 00:00:00 2001
From: h2-addad <hamza2.addad@live.uwe.ac.uk>
Date: Sun, 16 Jul 2023 15:21:04 +0000
Subject: [PATCH] Upload New File
---
src/tests/vm/page-linear.c | 44 ++++++++++++++++++++++++++++++++++++++
1 file changed, 44 insertions(+)
create mode 100644 src/tests/vm/page-linear.c
diff --git a/src/tests/vm/page-linear.c b/src/tests/vm/page-linear.c
new file mode 100644
index 0000000..652a47b
--- /dev/null
+++ b/src/tests/vm/page-linear.c
@@ -0,0 +1,44 @@
+/* Encrypts, then decrypts, 2 MB of memory and verifies that the
+ values are as they should be. */
+
+#include <string.h>
+#include "tests/arc4.h"
+#include "tests/lib.h"
+#include "tests/main.h"
+
+#define SIZE (2 * 1024 * 1024)
+
+static char buf[SIZE];
+
+void
+test_main (void)
+{
+ struct arc4 arc4;
+ size_t i;
+
+ /* Initialize to 0x5a. */
+ msg ("initialize");
+ memset (buf, 0x5a, sizeof buf);
+
+ /* Check that it's all 0x5a. */
+ msg ("read pass");
+ for (i = 0; i < SIZE; i++)
+ if (buf[i] != 0x5a)
+ fail ("byte %zu != 0x5a", i);
+
+ /* Encrypt zeros. */
+ msg ("read/modify/write pass one");
+ arc4_init (&arc4, "foobar", 6);
+ arc4_crypt (&arc4, buf, SIZE);
+
+ /* Decrypt back to zeros. */
+ msg ("read/modify/write pass two");
+ arc4_init (&arc4, "foobar", 6);
+ arc4_crypt (&arc4, buf, SIZE);
+
+ /* Check that it's all 0x5a. */
+ msg ("read pass");
+ for (i = 0; i < SIZE; i++)
+ if (buf[i] != 0x5a)
+ fail ("byte %zu != 0x5a", i);
+}
--
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