1# SPDX-License-Identifier: GPL-2.0-only 2config FS_ENCRYPTION 3 bool "FS Encryption (Per-file encryption)" 4 select CRYPTO 5 select CRYPTO_SKCIPHER 6 select CRYPTO_LIB_SHA256 7 select CRYPTO_LIB_SHA512 8 select KEYS 9 help 10 Enable encryption of files and directories. This 11 feature is similar to ecryptfs, but it is more memory 12 efficient since it avoids caching the encrypted and 13 decrypted pages in the page cache. Currently Ext4, 14 F2FS, UBIFS, and CephFS make use of this feature. 15 16# Filesystems supporting encryption must select this if FS_ENCRYPTION. This 17# allows the algorithms to be built as modules when all the filesystems are, 18# whereas selecting them from FS_ENCRYPTION would force them to be built-in. 19# 20# Note: this option only pulls in the algorithms that filesystem encryption 21# needs "by default". If userspace will use "non-default" encryption modes such 22# as Adiantum encryption, then those other modes need to be explicitly enabled 23# in the crypto API; see Documentation/filesystems/fscrypt.rst for details. 24# 25# Also note that this option only pulls in the generic implementations of the 26# algorithms, not any per-architecture optimized implementations. It is 27# strongly recommended to enable optimized implementations too. 28config FS_ENCRYPTION_ALGS 29 tristate 30 select CRYPTO_AES 31 select CRYPTO_CBC 32 select CRYPTO_CTS 33 select CRYPTO_ECB 34 select CRYPTO_XTS 35 36config FS_ENCRYPTION_INLINE_CRYPT 37 bool "Enable fscrypt to use inline crypto" 38 depends on FS_ENCRYPTION && BLK_INLINE_ENCRYPTION 39 help 40 Enable fscrypt to use inline encryption hardware if available. 41