summaryrefslogtreecommitdiffstats
path: root/fs/crypto/Kconfig
diff options
context:
space:
mode:
Diffstat (limited to 'fs/crypto/Kconfig')
-rw-r--r--fs/crypto/Kconfig46
1 files changed, 46 insertions, 0 deletions
diff --git a/fs/crypto/Kconfig b/fs/crypto/Kconfig
new file mode 100644
index 0000000000..2d0c8922f6
--- /dev/null
+++ b/fs/crypto/Kconfig
@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config FS_ENCRYPTION
+ bool "FS Encryption (Per-file encryption)"
+ select CRYPTO
+ select CRYPTO_HASH
+ select CRYPTO_SKCIPHER
+ select CRYPTO_LIB_SHA256
+ select KEYS
+ help
+ Enable encryption of 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. Currently Ext4,
+ F2FS and UBIFS make use of this feature.
+
+# Filesystems supporting encryption must select this if FS_ENCRYPTION. This
+# allows the algorithms to be built as modules when all the filesystems are,
+# whereas selecting them from FS_ENCRYPTION would force them to be built-in.
+#
+# Note: this option only pulls in the algorithms that filesystem encryption
+# needs "by default". If userspace will use "non-default" encryption modes such
+# as Adiantum encryption, then those other modes need to be explicitly enabled
+# in the crypto API; see Documentation/filesystems/fscrypt.rst for details.
+#
+# Also note that this option only pulls in the generic implementations of the
+# algorithms, not any per-architecture optimized implementations. It is
+# strongly recommended to enable optimized implementations too. It is safe to
+# disable these generic implementations if corresponding optimized
+# implementations will always be available too; for this reason, these are soft
+# dependencies ('imply' rather than 'select'). Only disable these generic
+# implementations if you're sure they will never be needed, though.
+config FS_ENCRYPTION_ALGS
+ tristate
+ imply CRYPTO_AES
+ imply CRYPTO_CBC
+ imply CRYPTO_CTS
+ imply CRYPTO_ECB
+ imply CRYPTO_HMAC
+ imply CRYPTO_SHA512
+ imply CRYPTO_XTS
+
+config FS_ENCRYPTION_INLINE_CRYPT
+ bool "Enable fscrypt to use inline crypto"
+ depends on FS_ENCRYPTION && BLK_INLINE_ENCRYPTION
+ help
+ Enable fscrypt to use inline encryption hardware if available.