Star64_linux/Documentation/filesystems
Eric Biggers adbd9b4dee fscrypt: remove selection of CONFIG_CRYPTO_SHA256
fscrypt only uses SHA-256 for AES-128-CBC-ESSIV, which isn't the default
and is only recommended on platforms that have hardware accelerated
AES-CBC but not AES-XTS.  There's no link-time dependency, since SHA-256
is requested via the crypto API on first use.

To reduce bloat, we should limit FS_ENCRYPTION to selecting the default
algorithms only.  SHA-256 by itself isn't that much bloat, but it's
being discussed to move ESSIV into a crypto API template, which would
incidentally bring in other things like "authenc" support, which would
all end up being built-in since FS_ENCRYPTION is now a bool.

For Adiantum encryption we already just document that users who want to
use it have to enable CONFIG_CRYPTO_ADIANTUM themselves.  So, let's do
the same for AES-128-CBC-ESSIV and CONFIG_CRYPTO_SHA256.

Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Eric Biggers <ebiggers@google.com>
2019-06-27 10:29:33 -07:00
..
caching
cifs
configfs
ext4
nfs
9p.txt
adfs.txt
affs.txt
afs.txt
api-summary.rst
autofs-mount-control.txt autofs: update mount control expire desription with AUTOFS_EXP_FORCED 2019-05-14 19:52:50 -07:00
autofs.txt autofs: add description of ignore pseudo mount option 2019-05-14 19:52:50 -07:00
automount-support.txt
befs.txt
bfs.txt
binderfs.rst
btrfs.txt
ceph.txt
coda.txt
conf.py
cramfs.txt
dax.txt
debugfs.txt
devpts.txt
directory-locking
dlmfs.txt
dnotify.txt
ecryptfs.txt
efivarfs.txt
ext2.txt
ext3.txt
f2fs.txt
fiemap.txt
files.txt
fscrypt.rst fscrypt: remove selection of CONFIG_CRYPTO_SHA256 2019-06-27 10:29:33 -07:00
fuse-io.txt
fuse.txt
gfs2-glocks.txt
gfs2-uevents.txt
gfs2.txt
hfs.txt
hfsplus.txt
hpfs.txt
index.rst
inotify.txt
isofs.txt
jfs.txt
journalling.rst
Locking
locks.txt
mandatory-locking.txt
mount_api.txt
nilfs2.txt
ntfs.txt
ocfs2-online-filecheck.txt
ocfs2.txt
omfs.txt
orangefs.txt
overlayfs.txt
path-lookup.rst
path-lookup.txt
porting
proc.txt
qnx6.txt
quota.txt
ramfs-rootfs-initramfs.txt
relay.txt
romfs.txt
seq_file.txt
sharedsubtree.txt
splice.rst
spufs.txt
squashfs.txt
sysfs-pci.txt
sysfs-tagging.txt
sysfs.txt
sysv-fs.txt
tmpfs.txt
ubifs-authentication.md
ubifs.txt
udf.txt
ufs.txt
vfat.txt
vfs.txt
xfs-delayed-logging-design.txt
xfs-self-describing-metadata.txt
xfs.txt