Eric Biggers 8094c3ceb2 fscrypt: add Adiantum support ... Add support for the Adiantum encryption mode to fscrypt. Adiantum is a tweakable, length-preserving encryption mode with security provably reducible to that of XChaCha12 and AES-256, subject to a security bound. It's also a true wide-block mode, unlike XTS. See the paper "Adiantum: length-preserving encryption for entry-level processors" (https://eprint.iacr.org/2018/720.pdf) for more details. Also see commit 059c2a4d8e ("crypto: adiantum - add Adiantum support"). On sufficiently long messages, Adiantum's bottlenecks are XChaCha12 and the NH hash function. These algorithms are fast even on processors without dedicated crypto instructions. Adiantum makes it feasible to enable storage encryption on low-end mobile devices that lack AES instructions; currently such devices are unencrypted. On ARM Cortex-A7, on 4096-byte messages Adiantum encryption is about 4 times faster than AES-256-XTS encryption; decryption is about 5 times faster. In fscrypt, Adiantum is suitable for encrypting both file contents and names. With filenames, it fixes a known weakness: when two filenames in a directory share a common prefix of >= 16 bytes, with CTS-CBC their encrypted filenames share a common prefix too, leaking information. Adiantum does not have this problem. Since Adiantum also accepts long tweaks (IVs), it's also safe to use the master key directly for Adiantum encryption rather than deriving per-file keys, provided that the per-file nonce is included in the IVs and the master key isn't used for any other encryption mode. This configuration saves memory and improves performance. A new fscrypt policy flag is added to allow users to opt-in to this configuration. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>		2019-01-06 08:36:21 -05:00
..
ABI	LED fixes for 4.20-rc2	2018-11-08 17:49:04 -06:00
accelerators	ocxl: Document new OCXL IOCTLs	2018-06-03 20:40:33 +10:00
accounting	psi: cgroup support	2018-10-26 16:26:32 -07:00
acpi	ACPI: property: graph: Update graph documentation to use generic references	2018-07-23 12:44:52 +02:00
admin-guide	Char/Misc driver fixes for 4.20-rc4	2018-11-22 08:43:06 -08:00
aoe
arm	ARM: SoC device tree updates for 4.20	2018-10-29 15:05:20 -07:00
arm64	Documentation/arm64: HugeTLB page implementation	2018-10-10 18:08:36 +01:00
auxdisplay	Doc: misc-devices: move lcd-panel-cgram.txt to auxdisplay/	2018-04-12 16:08:02 +02:00
backlight
block	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
blockdev	This is a fairly typical cycle for documentation. There's some welcome	2018-10-24 18:01:11 +01:00
bpf	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2018-08-07 11:02:05 -07:00
bus-devices
cdrom	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
cgroup-v1	Merge branch 'for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2018-10-25 17:15:46 -07:00
cma
connector
console	Documentation: corrections to console/console.txt	2018-08-10 16:09:40 -06:00
core-api	XArray: Fix Documentation	2018-11-05 16:38:10 -05:00
cpu-freq	Documentation: cpu-freq: Frequencies aren't always sorted	2018-11-07 13:29:04 +01:00
cpuidle	cpuidle: Add definition of residency to sysfs documentation	2018-04-09 13:44:37 +02:00
crypto	KEYS: Implement PKCS#8 RSA Private Key parser [ver #2]	2018-10-26 09:30:46 +01:00
dev-tools	docs: dev-tools: coccinelle: Update documentation	2018-08-31 16:51:59 -06:00
device-mapper	This is a fairly typical cycle for documentation. There's some welcome	2018-10-24 18:01:11 +01:00
devicetree	dt-bindings: dsa: Fix typo in "probed"	2018-11-23 22:33:55 -08:00
doc-guide	Documentation/sphinx: allow "functions" with no parameters	2018-06-30 07:52:42 -06:00
driver-api	Char/Misc driver patches for 4.20-rc1	2018-10-26 09:11:43 -07:00
driver-model	dmaengine: add a new helper dmaenginem_async_device_register	2018-07-30 10:50:22 +05:30
early-userspace	initramfs: move gen_initramfs_list.sh from scripts/ to usr/	2018-08-22 23:21:44 +09:00
EDID
extcon
fault-injection	Documentation: nvme: Documentation for nvme fault injection	2018-03-26 08:53:43 -06:00
fb	This is a fairly typical cycle for documentation. There's some welcome	2018-10-24 18:01:11 +01:00
features	ARM: 8777/1: Hook up SYNC_CORE functionality for sys_membarrier()	2018-07-11 11:02:08 +01:00
filesystems	fscrypt: add Adiantum support	2019-01-06 08:36:21 -05:00
firmware_class
fmc	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
fpga	docs: fpga: add a document for FPGA Device Feature List (DFL) Framework Overview	2018-07-15 13:55:44 +02:00
gpio	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
gpu	Merge branch 'drm-next-4.20' of git://people.freedesktop.org/~agd5f/linux into drm-next	2018-09-21 09:52:53 +10:00
hid
hwmon	hwmon: (ina3221) Read channel input source info from DT	2018-10-10 20:37:13 -07:00
i2c	i2c: add i2c bus driver for NVIDIA GPU	2018-11-09 17:46:43 +01:00
ia64	ia64: doc: tweak whitespace for 'console=' parameter	2018-03-05 14:41:38 -08:00
ide	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
iio
infiniband	Documentation/ABI: update infiniband sysfs interfaces	2018-02-23 08:18:33 -07:00
input	Revert "Input: Add the REL_WHEEL_HI_RES event code"	2018-11-22 08:57:44 +01:00
ioctl	drm pull for 4.20-rc1	2018-10-28 17:49:53 -07:00
isdn	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
kbuild	kbuild: remove unused cc-fullversion variable	2018-11-02 00:15:26 +09:00
kdump
kernel-hacking	doc:it_IT: translation for kernel-hacking	2018-07-26 16:21:09 -06:00
laptops	platform-drivers-x86 for v4.20-1	2018-11-01 08:42:21 -07:00
leds	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
lightnvm
livepatch	livepatch: Remove not longer valid limitations from the documentation	2018-05-24 15:37:57 +02:00
locking	This is a fairly typical cycle for documentation. There's some welcome	2018-10-24 18:01:11 +01:00
m68k	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
maintainer	docs: Fix more broken references	2018-06-15 18:11:26 -03:00
md	raid5-ppl: PPL support for disks with write-back cache enabled	2018-01-15 14:29:42 -08:00
media	media: docs: Document metadata format in struct v4l2_format	2018-11-06 07:10:12 -05:00
memory-devices
mic
mips	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
misc-devices	pci_endpoint_test: Add 2 ioctl commands	2018-07-19 11:46:57 +01:00
mmc	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
mtd	Documentation: mtd: remove stale pxa3xx NAND controller documentation	2018-09-04 23:37:38 +02:00
namespaces
netlabel	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
networking	rxrpc: Fix life check	2018-11-15 11:35:40 -08:00
nfc
nios2
nvdimm
nvmem	Documentation: nvmem: document cell tables and lookup entries	2018-09-28 15:14:54 +02:00
openrisc
parisc	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
PCI	pci-v4.20-changes	2018-10-25 06:50:48 -07:00
pcmcia	pcmcia: remove long deprecated pcmcia_request_exclusive_irq() function	2018-08-18 12:30:42 -07:00
perf	drivers/bus: Move Arm CCN PMU driver	2018-03-06 17:26:15 +01:00
phy
platform
power	This is a fairly typical cycle for documentation. There's some welcome	2018-10-24 18:01:11 +01:00
powerpc	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
pps
process	The Compiler Attributes series	2018-11-01 18:34:46 -07:00
pti
ptp	ptp: Fix documentation to match code.	2018-03-26 12:13:21 -04:00
rapidio	Documentation: rapidio: move sysfs interface to ABI	2018-02-23 08:25:45 -07:00
RCU	This is a fairly typical cycle for documentation. There's some welcome	2018-10-24 18:01:11 +01:00
riscv	perf: riscv: Add Document for Future Porting Guide	2018-06-04 14:02:11 -07:00
s390	KVM updates for v4.20	2018-10-25 17:57:35 -07:00
scheduler	This is a fairly typical cycle for documentation. There's some welcome	2018-10-24 18:01:11 +01:00
scsi	SCSI misc on 20181024	2018-10-25 07:40:30 -07:00
security	Merge branch 'next-keys2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2018-11-01 15:23:59 -07:00
serial	TTY/Serial patches for 4.20-rc1	2018-10-29 10:42:20 -07:00
sh
sound	ALSA: doc: Brush up the old writing-an-alsa-driver	2018-10-18 10:30:01 +02:00
sparc	sparc64: Add support for ADI (Application Data Integrity)	2018-03-18 07:38:48 -07:00
sphinx	Documentation/sphinx: allow "functions" with no parameters	2018-06-30 07:52:42 -06:00
sphinx-static	docs: improve readability for people with poorer eyesight	2018-10-07 09:16:50 -06:00
spi	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
sysctl	New gcc plugin: stackleak	2018-11-01 11:46:27 -07:00
target
thermal	thermal: Add cooling device's statistics in sysfs	2018-04-02 21:49:01 +08:00
timers	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
trace	The biggest change here is the updates to kprobes	2018-10-30 09:49:56 -07:00
translations	This was a moderately busy cycle for docs, with the usual collection of	2018-08-14 14:29:31 -07:00
usb	USB-serial updates for v4.19-rc1	2018-07-20 21:47:15 +02:00
userspace-api	audit/stable-4.18 PR 20180605	2018-06-06 16:34:00 -07:00
virtual	KVM updates for v4.20	2018-10-25 17:57:35 -07:00
vm	slub: extend slub debug to handle multiple slabs	2018-10-26 16:25:19 -07:00
w1	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
watchdog	documentation: watchdog: add documentation for armada-37xx-wdt	2018-10-13 15:19:40 +02:00
wimax
x86	x86/mm: Move LDT remap out of KASLR region on 5-level paging	2018-11-06 21:35:11 +01:00
xilinx	Documentation: xilinx: Add documentation for eemi APIs	2018-10-09 13:26:05 +02:00
xtensa	xtensa: add support for KASAN	2017-12-16 22:37:12 -08:00
.gitignore
atomic_bitops.txt	locking/atomic/bitops: Document and clarify ordering semantics for failed test_and_{}_bit()	2018-02-13 14:55:53 +01:00
atomic_t.txt
bt8xxgpio.txt
btmrvl.txt
bus-virt-phys-mapping.txt
Changes
clearing-warn-once.txt
CodingStyle
conf.py	This is a fairly typical cycle for documentation. There's some welcome	2018-10-24 18:01:11 +01:00
cpu-load.txt
cputopology.txt
crc32.txt
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt	Documentation: remove stale firmware API reference	2018-05-14 16:44:41 +02:00
digsig.txt
DMA-API-HOWTO.txt
DMA-API.txt
DMA-attributes.txt
DMA-ISA-LPC.txt
docutils.conf
dontdiff
efi-stub.txt	efi_stub: update documentation on dtb= parameter	2018-09-09 14:46:44 -06:00
eisa.txt
flexible-arrays.txt
futex-requeue-pi.txt
gcc-plugins.txt
highuid.txt
hw_random.txt
hwspinlock.txt
index.rst	docs: tidy up TOCs and refs to license-rules.rst	2018-08-31 16:50:50 -06:00
intel_txt.txt
Intel-IOMMU.txt
io_ordering.txt
io-mapping.txt
iostats.txt	block: Track DISCARD statistics and output them in stat and diskstat	2018-07-18 08:44:22 -06:00
IPMI.txt
IRQ-affinity.txt
IRQ-domain.txt	irqdomain: Kill CONFIG_IRQ_DOMAIN_DEBUG	2018-01-24 12:32:58 +01:00
IRQ.txt
irqflags-tracing.txt
isa.txt
isapnp.txt
kernel-per-CPU-kthreads.txt	doc: Update removal of RCU-bh/sched update machinery	2018-08-30 10:59:48 -07:00
kobject.txt
kprobes.txt	kprobes/Documentation: Fix various typos	2018-06-22 11:10:55 +02:00
kref.txt
ldm.txt
lockup-watchdogs.txt
logo.gif
logo.txt
lsm.txt
lzo.txt
mailbox.txt
Makefile
memory-barriers.txt	locking/memory-barriers: Replace smp_cond_acquire() with smp_cond_load_acquire()	2018-10-02 10:28:05 +02:00
men-chameleon-bus.txt
nommu-mmap.txt	Documentation: nommu-map: Fix duplicate word typo	2018-06-26 09:01:27 -06:00
ntb.txt
numastat.txt
padata.txt
parport-lowlevel.txt
percpu-rw-semaphore.txt
phy.txt
pi-futex.txt
pnp.txt
preempt-locking.txt	Documentation: preempt-locking: Use better example	2018-10-12 11:35:47 -06:00
pwm.txt
rbtree.txt
remoteproc.txt
rfkill.txt	rfkill: Fix several typos in documentation	2018-06-15 13:36:08 +02:00
robust-futex-ABI.txt
robust-futexes.txt
rpmsg.txt
rtc.txt	Documentation: rtc: move iotcl interface documentation to ABI	2018-01-12 00:20:41 +01:00
SAK.txt
sgi-ioc4.txt
siphash.txt
SM501.txt
smsc_ece1099.txt
speculation.txt	Documentation: Document array_index_nospec	2018-01-30 21:54:28 +01:00
static-keys.txt
SubmittingPatches
svga.txt	documentation/svga.txt: update outdated file	2017-11-20 10:45:50 -07:00
switchtec.txt	NTB: switchtec_ntb: Update switchtec documentation with prerequisites for NTB	2018-10-11 11:28:53 -05:00
sync_file.txt
tee.txt
this_cpu_ops.txt
unaligned-memory-access.txt
vfio-mediated-device.txt	vfio/mdev: Check globally for duplicate devices	2018-06-08 10:24:27 -06:00
vfio.txt	vfio: fix documentation	2018-05-08 09:16:41 -06:00
video-output.txt
xillybus.txt
xz.txt
zorro.txt