generic: verify ciphertext of v2 encryption policies with AES-256

Verify ciphertext for v2 encryption policies that use AES-256-XTS to
encrypt file contents and AES-256-CTS-CBC to encrypt file names.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>

tests/generic/582

@@ -0,0 +1,43 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright 2019 Google LLC
+#
+# FS QA Test No. generic/582
+#
+# Verify ciphertext for v2 encryption policies that use AES-256-XTS to encrypt
+# file contents and AES-256-CTS-CBC to encrypt file names.
+#
+# This is the same as generic/548, except using v2 policies.
+#
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+	cd /
+	rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/encrypt
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+_supported_fs generic
+_supported_os Linux
+
+_verify_ciphertext_for_encryption_policy AES-256-XTS AES-256-CTS-CBC v2
+
+# success, all done
+status=0
+exit

tests/generic/582.out

@@ -0,0 +1,6 @@
+QA output created by 582
+
+Verifying ciphertext with parameters:
+	contents_encryption_mode: AES-256-XTS
+	filenames_encryption_mode: AES-256-CTS-CBC
+	options: v2

tests/generic/group

@@ -584,3 +584,4 @@
 579 auto stress verity
 580 auto quick encrypt
 581 auto quick encrypt
+582 auto quick encrypt