Initial Pintos

1 files changed, 27 insertions, 0 deletions

diff --git a/src/tests/random.pm b/src/tests/random.pm
new file mode 100644
index 0000000..be008ff
--- /dev/null
+++ b/src/tests/random.pm
@@ -0,0 +1,27 @@
+use strict;
+use warnings;
+
+use tests::arc4;
+
+my (@arc4);
+
+sub random_init {
+    if (@arc4 == 0) {
+	my ($seed) = @_;
+	$seed = 0 if !defined $seed;
+	@arc4 = arc4_init (pack ("V", $seed));
+    }
+}
+
+sub random_bytes {
+    random_init ();
+    my ($n) = @_;
+    return arc4_crypt (\@arc4, "\0" x $n);
+}
+
+sub random_ulong {
+    random_init ();
+    return unpack ("V", random_bytes (4));
+}
+
+1;