diff options
| -rw-r--r-- | fs/crypto/Kconfig | 30 |
1 files changed, 22 insertions, 8 deletions
diff --git a/fs/crypto/Kconfig b/fs/crypto/Kconfig index a5f5c30368a2..2d0c8922f635 100644 --- a/fs/crypto/Kconfig +++ b/fs/crypto/Kconfig @@ -14,16 +14,30 @@ config FS_ENCRYPTION 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. +# 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 - select CRYPTO_AES - select CRYPTO_CBC - select CRYPTO_CTS - select CRYPTO_ECB - select CRYPTO_HMAC - select CRYPTO_SHA512 - select CRYPTO_XTS + 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" |