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[PATCH-v2,03/20] ext4 crypto: add ext4 encryption Kconfig

Message ID 1428894996-7852-4-git-send-email-tytso@mit.edu
State Accepted, archived
Headers show

Commit Message

Theodore Ts'o April 13, 2015, 3:16 a.m. UTC 
Change-Id: Ieedde8447d748d2ca1ffca546e58418fb9e9c885
Signed-off-by: Michael Halcrow <mhalcrow@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---
 fs/ext4/Kconfig | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
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Patch

diff --git a/fs/ext4/Kconfig b/fs/ext4/Kconfig
index efea5d5..18228c2 100644
--- a/fs/ext4/Kconfig
+++ b/fs/ext4/Kconfig
@@ -64,6 +64,23 @@  config EXT4_FS_SECURITY
 	  If you are not using a security module that requires using
 	  extended attributes for file security labels, say N.
 
+config EXT4_FS_ENCRYPTION
+	bool "Ext4 Encryption"
+	depends on EXT4_FS
+	select CRYPTO_AES
+	select CRYPTO_CBC
+	select CRYPTO_ECB
+	select CRYPTO_XTS
+	select CRYPTO_CTS
+	select CRYPTO_SHA256
+	select KEYS
+	select ENCRYPTED_KEYS
+	help
+	  Enable encryption of ext4 files and directories.  This
+	  feature is similar to ecryptfs, but it is more memory
+	  efficient since it avoids caching the encrypted and
+	  decrypted pages in the page cache.
+
 config EXT4_DEBUG
 	bool "EXT4 debugging support"
 	depends on EXT4_FS