Add a junk-generating utility

1 files changed, 44 insertions, 0 deletions

diff --git a/mkjunk b/mkjunk
new file mode 100755
index 0000000..695d9d4
--- /dev/null
+++ b/mkjunk
@@ -0,0 +1,44 @@
+#!/usr/bin/python
+#
+# Copyright (C) 2014  Lars Wirzenius
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+import Crypto.Cipher.ARC4
+
+import cliapp
+
+
+class MakeJunk(cliapp.Application):
+
+    def add_settings(self):
+        self.settings.bytesize(
+            ['bytes'],
+            'produce SIZE bytes of output',
+            metavar='SIZE')
+
+    def process_args(self, args):
+        key = 'seed'
+        data = 'x' * (10 * 1024**2)
+        arc4 = Crypto.Cipher.ARC4.new(key)
+
+        remaining = self.settings['bytes']
+        while remaining > 0:
+            junk = arc4.encrypt(data)[:remaining]
+            self.output.write(junk)
+            remaining -= len(junk)
+
+
+MakeJunk().run()