From 91b4cfc801b7c156c231ca60aba69a8d171e9226 Mon Sep 17 00:00:00 2001
From: iximeow <me@iximeow.net>
Date: Wed, 26 Nov 2014 18:10:58 -0800
Subject: Challenge 8, 9

---
 test/Set2Spec.scala | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 test/Set2Spec.scala

(limited to 'test/Set2Spec.scala')

diff --git a/test/Set2Spec.scala b/test/Set2Spec.scala
new file mode 100644
index 0000000..efcb5b0
--- /dev/null
+++ b/test/Set2Spec.scala
@@ -0,0 +1,46 @@
+package ixee.cryptopals.test
+
+import com.ixee.IxeeSpec
+
+class Set2Spec extends IxeeSpec {
+
+  import ixee.cryptopals.utils.ConversionUtils._
+  import ixee.cryptopals.utils.ByteUtils._
+  import ixee.cryptopals.utils.StreamUtils._
+  import ixee.cryptopals.utils._
+  import ixee.cryptopals.solvers._
+
+  "Set2" - {
+
+    "Challenge 9: Implement PKCS#7 padding" - {
+
+      "when n bytes are missing" - {
+
+        "fill with n bytes of value n" in {
+
+          val text = "what a nice stri" * 16 * 2
+
+          def challenge9spec(expected: Byte) = {
+            val truncated = text.dropRight(expected)
+            val padString =
+              CryptoUtils.pkcs7pad(truncated, 256).takeRight(expected)
+
+            val expectedPad =
+              s"${expected.toChar}" * expected
+
+            padString mustBe expectedPad
+          }
+
+          for {
+            x <- 1 to 255
+          } yield challenge9spec(x.toByte)
+
+        }
+
+      }
+
+    }
+
+  }
+
+}
-- 
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