Commit Graph

830 Commits

Author SHA1 Message Date
Matéo Duparc bd5d53f50e
libgocryptfs: update to gocryptfs v2.2.0 2021-10-12 16:54:56 +02:00
Jakob Unterwurzacher 2d0ba24eca -speed: print cpu model
When somebody posts "gocryptfs -speed" results, they are
most helpful together with the CPU model. Add the cpu model
to the output.

Example:

$ ./gocryptfs -speed
gocryptfs v2.2.0-beta1-5-g52b0444-dirty; go-fuse v2.1.1-0.20210825171523-3ab5d95a30ae; 2021-09-14 go1.17.1 linux/amd64
cpu: Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz; with AES acceleration
AES-GCM-256-OpenSSL       	 862.79 MB/s
AES-GCM-256-Go            	 997.71 MB/s	(selected in auto mode)
AES-SIV-512-Go            	 159.58 MB/s
XChaCha20-Poly1305-OpenSSL	 729.65 MB/s
XChaCha20-Poly1305-Go     	 843.97 MB/s	(selected in auto mode)
2021-09-14 18:58:22 +02:00
Jakob Unterwurzacher 61e37b2439 stupidgcm: add CpuHasAES()
Makes the code clearer, and will be used in the next commit.
2021-09-14 18:58:04 +02:00
Jakob Unterwurzacher cdbc48fe29 -speed: drop useless tab at end of line 2021-09-14 10:15:18 +02:00
Jakob Unterwurzacher c9b825c58a inomap: deterministically set root device
We used to have "first Translate() wins". This is not deterministic,
as the LOOKUP for the root directory does not seem to reach us, so
the first user LOOKUP would win, which may be on a mountpoint.
2021-09-10 17:17:16 +02:00
Jakob Unterwurzacher d023cd6c95 cli: drop -forcedecode flag
The rewritten openssl backend does not support this flag anymore,
and it was inherently dangerour. Drop it (ignored for compatibility)
2021-09-10 12:14:19 +02:00
Jakob Unterwurzacher ad21647f25 -speed: show which xchacha implementation is preferred 2021-09-08 20:46:52 +02:00
Jakob Unterwurzacher 94e8004b6c Make -openssl also apply to xchacha
Now that stupidgcm supports xchacha, make it available
on mount.
2021-09-08 20:32:16 +02:00
Jakob Unterwurzacher 1a58667293 stupidgcm: add PreferOpenSSL{AES256GCM,Xchacha20poly1305}
Add PreferOpenSSLXchacha20poly1305,
rename PreferOpenSSL -> PreferOpenSSLAES256GCM.
2021-09-08 19:48:13 +02:00
Jakob Unterwurzacher 85c2beccaf stupidgcm: normalize constructor naming
New() -> NewAES256GCM()

Also add missing NewChacha20poly1305
constructor in without_openssl.go.
2021-09-07 18:15:04 +02:00
Jakob Unterwurzacher f47e287c20 stupidgcm: revamp package documentation
Maybe interesting for people following
https://github.com/rfjakob/gocryptfs/issues/452
2021-09-07 18:15:04 +02:00
Jakob Unterwurzacher d598536709 stupidgcm: unexport stupidGCM struct
No need to have it exported.
2021-09-07 18:15:04 +02:00
Jakob Unterwurzacher 3a80db953d stupidgcm: allow zero-length input data
We used to panic in this case because it is useless.
But Go stdlib supports it, so we should as well.
2021-09-07 18:15:04 +02:00
Jakob Unterwurzacher 738d5a2b3a stupidgcm: fix build with CGO_ENABLED=1 without_openssl
We missed some "// +build" lines
2021-09-07 18:15:04 +02:00
Jakob Unterwurzacher d9510d0c0b stupidgcm: NewChacha20poly1305: avoid slice append
I noticed that growslice() shows up in the cpuprofile.
Avoiding slice append for the private jey copy gives a 0.6% speedup:

gocryptfs/internal/speed$ benchstat old new
name             old time/op   new time/op   delta
StupidXchacha-4   5.68µs ± 0%   5.65µs ± 0%  -0.63%  (p=0.008 n=5+5)

name             old speed     new speed     delta
StupidXchacha-4  721MB/s ± 0%  725MB/s ± 0%  +0.63%  (p=0.008 n=5+5)
2021-09-07 18:14:58 +02:00
Jakob Unterwurzacher 39b1070506 stupidgcm: add testConcurrency
Verifies that we don't corrupt data when called concurrently.
2021-09-07 18:14:05 +02:00
Jakob Unterwurzacher f89b14ee3d stupidgcm: cache C.EVP_chacha20_poly1305()
2% performance improvement, almost for free.

gocryptfs/internal/speed$ benchstat old new
name             old time/op   new time/op   delta
StupidXchacha-4   5.82µs ± 0%   5.68µs ± 0%  -2.37%  (p=0.008 n=5+5)

name             old speed     new speed     delta
StupidXchacha-4  704MB/s ± 0%  721MB/s ± 0%  +2.43%  (p=0.008 n=5+5)
2021-09-07 18:14:05 +02:00
Jakob Unterwurzacher 6a0206897c stupidgcm: add BenchmarkCCall
gocryptfs/internal/stupidgcm$ go test -bench .
goos: linux
goarch: amd64
pkg: github.com/rfjakob/gocryptfs/v2/internal/stupidgcm
cpu: Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz
BenchmarkCCall-4   	15864030	        78.60 ns/op
PASS
ok  	github.com/rfjakob/gocryptfs/v2/internal/stupidgcm	1.898s
2021-09-07 18:14:05 +02:00
Jakob Unterwurzacher a2eaa5e3d1 speed: add BenchmarkStupidChacha
gocryptfs/internal/speed$ go test -bench .
goos: linux
goarch: amd64
pkg: github.com/rfjakob/gocryptfs/v2/internal/speed
cpu: Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz
BenchmarkStupidGCM-4              	  249396	      4722 ns/op	 867.50 MB/s
BenchmarkStupidGCMDecrypt-4       	  257872	      4616 ns/op	 887.35 MB/s
BenchmarkGoGCM-4                  	  290952	      4097 ns/op	 999.83 MB/s
BenchmarkGoGCMDecrypt-4           	  294106	      4060 ns/op	1008.84 MB/s
BenchmarkAESSIV-4                 	   46520	     25532 ns/op	 160.42 MB/s
BenchmarkAESSIVDecrypt-4          	   46974	     25478 ns/op	 160.76 MB/s
BenchmarkXchacha-4                	  244108	      4881 ns/op	 839.14 MB/s
BenchmarkXchachaDecrypt-4         	  249658	      4786 ns/op	 855.86 MB/s
BenchmarkStupidXchacha-4          	  205339	      5768 ns/op	 710.11 MB/s
BenchmarkStupidXchachaDecrypt-4   	  204577	      5836 ns/op	 701.84 MB/s
BenchmarkStupidChacha-4           	  227510	      5224 ns/op	 784.06 MB/s
BenchmarkStupidChachaDecrypt-4    	  222787	      5359 ns/op	 764.34 MB/s
PASS
ok  	github.com/rfjakob/gocryptfs/v2/internal/speed	15.328s
2021-09-07 18:14:05 +02:00
Jakob Unterwurzacher b8c56ccffc stupidgcm: replace naked panics 2021-09-07 18:14:05 +02:00
Jakob Unterwurzacher 8f820c429d stupidgcm: fix without_openssl build
$ ./build-without-openssl.bash
internal/speed/speed.go:152:14: undefined: stupidgcm.NewXchacha20poly1305
2021-09-07 18:14:05 +02:00
Jakob Unterwurzacher e2ec048a09 stupidgcm: introduce stupidAEADCommon and use for both chacha & gcm
Nice deduplication and brings the GCM decrypt speed up to par.

internal/speed$ benchstat old new
name                old time/op   new time/op   delta
StupidGCM-4          4.71µs ± 0%   4.66µs ± 0%   -0.99%  (p=0.008 n=5+5)
StupidGCMDecrypt-4   5.77µs ± 1%   4.51µs ± 0%  -21.80%  (p=0.008 n=5+5)

name                old speed     new speed     delta
StupidGCM-4         870MB/s ± 0%  879MB/s ± 0%   +1.01%  (p=0.008 n=5+5)
StupidGCMDecrypt-4  710MB/s ± 1%  908MB/s ± 0%  +27.87%  (p=0.008 n=5+5)
2021-09-07 18:14:05 +02:00
Jakob Unterwurzacher bf572aef88 stupidgcm: stupidChacha20poly1305.Open: batch C calls in aead_open
Gets the decryption speed to the same level as the
encryption speed.

internal/speed$ benchstat old.txt new.txt
name                    old time/op    new time/op    delta
StupidXchacha-4          732MB/s ± 0%   740MB/s ± 0%   ~     (p=1.000 n=1+1)
StupidXchachaDecrypt-4   602MB/s ± 0%   741MB/s ± 0%   ~     (p=1.000 n=1+1)
2021-09-07 18:14:05 +02:00
Jakob Unterwurzacher 3e27acb989 speed: add decryption benchmarks
gocryptfs/internal/speed$ go test -bench .
goos: linux
goarch: amd64
pkg: github.com/rfjakob/gocryptfs/v2/internal/speed
cpu: Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz
BenchmarkStupidGCM-4              	  263742	      4523 ns/op	 905.61 MB/s
BenchmarkStupidGCMDecrypt-4       	  204858	      5779 ns/op	 708.76 MB/s
BenchmarkGoGCM-4                  	  291259	      4095 ns/op	1000.25 MB/s
BenchmarkGoGCMDecrypt-4           	  293886	      4061 ns/op	1008.53 MB/s
BenchmarkAESSIV-4                 	   46537	     25538 ns/op	 160.39 MB/s
BenchmarkAESSIVDecrypt-4          	   46770	     25627 ns/op	 159.83 MB/s
BenchmarkXchacha-4                	  243619	      4893 ns/op	 837.03 MB/s
BenchmarkXchachaDecrypt-4         	  248857	      4793 ns/op	 854.51 MB/s
BenchmarkStupidXchacha-4          	  213717	      5558 ns/op	 736.99 MB/s
BenchmarkStupidXchachaDecrypt-4   	  176635	      6782 ns/op	 603.96 MB/s
PASS
ok  	github.com/rfjakob/gocryptfs/v2/internal/speed	12.871s
2021-09-07 18:14:05 +02:00
Jakob Unterwurzacher 5046962634 speed: add bEncrypt helper, reuse dst buffer
The bEncrypt helper massively deduplicates the code,
and reusing the dst buffer gives higher performance,
and that's what gocryptfs does in normal operation via
sync.Pool.

$ benchstat old.txt new.txt
name             old time/op   new time/op    delta
StupidGCM-4       6.24µs ± 1%    4.65µs ± 0%  -25.47%  (p=0.008 n=5+5)
GoGCM-4           4.90µs ± 0%    4.10µs ± 0%  -16.44%  (p=0.008 n=5+5)
AESSIV-4          26.4µs ± 0%    25.6µs ± 0%   -2.90%  (p=0.008 n=5+5)
Xchacha-4         5.76µs ± 0%    4.91µs ± 0%  -14.79%  (p=0.008 n=5+5)
StupidXchacha-4   7.24µs ± 1%    5.48µs ± 0%  -24.33%  (p=0.008 n=5+5)

name             old speed     new speed      delta
StupidGCM-4      656MB/s ± 1%   880MB/s ± 0%  +34.15%  (p=0.008 n=5+5)
GoGCM-4          835MB/s ± 0%  1000MB/s ± 0%  +19.68%  (p=0.008 n=5+5)
AESSIV-4         155MB/s ± 0%   160MB/s ± 0%   +2.99%  (p=0.008 n=5+5)
Xchacha-4        711MB/s ± 0%   834MB/s ± 0%  +17.35%  (p=0.008 n=5+5)
StupidXchacha-4  565MB/s ± 1%   747MB/s ± 0%  +32.15%  (p=0.008 n=5+5)
2021-09-07 18:14:05 +02:00
Jakob Unterwurzacher d9e89cd021 stupidgcm: use aead_seal for gcm as well
$ benchstat old.txt new.txt
name         old time/op   new time/op   delta
StupidGCM-4   7.87µs ± 1%   6.64µs ± 2%  -15.65%  (p=0.000 n=10+10)

name         old speed     new speed     delta
StupidGCM-4  520MB/s ± 1%  617MB/s ± 2%  +18.56%  (p=0.000 n=10+10)
2021-09-07 18:14:05 +02:00
Jakob Unterwurzacher 69d626b26f stupidgcm: replace chacha20poly1305_seal with generic aead_seal 2021-09-07 18:14:05 +02:00
Jakob Unterwurzacher a3f5a8492a stupidgcm: batch C calls in chacha20poly1305_seal
Go has a high overhead for each C call, so batch
all openssl operations in the new C function chacha20poly1305_seal.

Benchmark results:

internal/speed$ go test -bench BenchmarkStupidXchacha -count 10 > old.txt
internal/speed$ go test -bench BenchmarkStupidXchacha -count 10 > new.txt

internal/speed$ benchstat old.txt new.txt
name             old time/op   new time/op   delta
StupidXchacha-4   8.79µs ± 1%   7.25µs ± 1%  -17.54%  (p=0.000 n=10+10)

name             old speed     new speed     delta
StupidXchacha-4  466MB/s ± 1%  565MB/s ± 1%  +21.27%  (p=0.000 n=10+10)
2021-09-07 18:14:05 +02:00
Jakob Unterwurzacher 9e1dd73e55 -speed: add XChaCha20-Poly1305-OpenSSL
$ ./gocryptfs -speed
gocryptfs v2.1-56-gdb1466f-dirty.stupidchacha; go-fuse v2.1.1-0.20210825171523-3ab5d95a30ae; 2021-09-02 go1.17 linux/amd64
AES-GCM-256-OpenSSL       	 529.53 MB/s
AES-GCM-256-Go            	 833.85 MB/s	(selected in auto mode)
AES-SIV-512-Go            	 155.27 MB/s
XChaCha20-Poly1305-Go     	 715.33 MB/s	(use via -xchacha flag)
XChaCha20-Poly1305-OpenSSL	 468.94 MB/s

https://github.com/rfjakob/gocryptfs/issues/452
2021-09-07 18:14:05 +02:00
Jakob Unterwurzacher 4017e4b22c stupidgcm: add stupidXchacha20poly1305
Implementation copied from
32db794688/chacha20poly1305/xchacha20poly1305.go
2021-09-07 18:14:05 +02:00
Jakob Unterwurzacher 591a56e7ae stupidgcm: stupidChacha20poly1305: normalize panic messages 2021-09-07 18:14:05 +02:00
Jakob Unterwurzacher 5df7ee815d stupidgcm: stupidChacha20poly1305: use byte array for key
Follow what golang.org/x/crypto/chacha20poly1305 does
for easier integration in the next commit.
2021-09-07 18:13:54 +02:00
Jakob Unterwurzacher 3ba74ac4fc stupidgcm: add testWipe test
After looking at the cover profile, this was the only untested
code except panic cases.
2021-09-02 10:17:01 +02:00
Jakob Unterwurzacher 961b8ca438 stupidgcm: deduplicate tests 2/2
Deduplicate the cipher setup that was identical
for all tests for each cipher.
2021-09-02 10:04:38 +02:00
Jakob Unterwurzacher 676a4ceb87 stupidgcm: deduplicate tests 1/2
Pull the code shared between chacha and gcm into
generic functions.
2021-09-02 09:57:20 +02:00
Jakob Unterwurzacher c9b090770a stupidgcm: add chacha20poly1305 via openssl
"stupidChacha20poly1305".

XChaCha will build upon this.
2021-09-02 09:30:28 +02:00
Jakob Unterwurzacher 4e3b7702af fusefrontend: remove leftover Printf
Commit b83ca9c921
inadveredly added a leftover debug Printf.

Delete it.
2021-08-30 11:39:44 +02:00
Jakob Unterwurzacher 34d8a498c4 Unbreak hyperlinks broken by go mod v2 conversion
Commit

  69d88505fd go mod: declare module version v2

translated all instances of "github.com/rfjakob/gocryptfs/" to
"github.com/rfjakob/gocryptfs/v2/".

Unfortunately, this included hyperlinks.

Unbreak the hyperlinks like this:

  find . -name \*.go | xargs sed -i s%https://github.com/rfjakob/gocryptfs/v2/%https://github.com/rfjakob/gocryptfs/v2/%
2021-08-30 11:31:01 +02:00
Jakob Unterwurzacher a99051b324 Reimplement -serialize_reads flag using new SyncRead mount flag
Let the kernel do the work for us.

See 15a8bb029a
for more info.
2021-08-30 09:53:58 +02:00
Jakob Unterwurzacher b83ca9c921 Remove serialize_reads package
Will be replaced by go-fuse's new SyncRead flag.

More info: https://github.com/hanwen/go-fuse/issues/395
SyncRead commit: 15a8bb029a
2021-08-30 09:41:38 +02:00
Matéo Duparc f0e45c7b7e
libgocryptfs: update to gocryptfs v2.1 2021-08-29 12:46:32 +02:00
Jakob Unterwurzacher 61ef6b00a6 -devrandom: make flag a no-op
Commit f3c777d5ea added the `-devrandom` option:

    commit f3c777d5ea
    Author: @slackner
    Date:   Sun Nov 19 13:30:04 2017 +0100

    main: Add '-devrandom' commandline option

    Allows to use /dev/random for generating the master key instead of the
    default Go implementation. When the kernel random generator has been
    properly initialized both are considered equally secure, however:

    * Versions of Go prior to 1.9 just fall back to /dev/urandom if the
      getrandom() syscall would be blocking (Go Bug #19274)

    * Kernel versions prior to 3.17 do not support getrandom(), and there
      is no check if the random generator has been properly initialized
      before reading from /dev/urandom

    This is especially useful for embedded hardware with low-entroy. Please
    note that generation of the master key might block indefinitely if the
    kernel cannot harvest enough entropy.

We now require Go v1.13 and Kernel versions should have also moved on.
Make the flag a no-op.

https://github.com/rfjakob/gocryptfs/issues/596
2021-08-25 12:39:17 +02:00
Jakob Unterwurzacher 5f1094b164 -speed: note that -xchacha is selectable 2021-08-24 14:02:12 +02:00
Jakob Unterwurzacher 20ca63cdbc contentenc: remove unused NonceMode constants
Looks like these are part of an abandoned plan.
2021-08-23 22:14:20 +02:00
Jakob Unterwurzacher dfb7fae52a speed: use algo names from cryptocore 2021-08-23 22:13:49 +02:00
Jakob Unterwurzacher 806334eacf cryptocore: add NonceSize to AEADTypeEnum
Have the information in one centralized place,
and access it from main as needed.
2021-08-23 22:10:23 +02:00
Jakob Unterwurzacher 97d8340bd8 configfile: add Validate() function, support FlagXChaCha20Poly1305
We used to do validation using lists of mandatory feature flags.

With the introduction of XChaCha20Poly1305, this became too
simplistic, as it uses a different IV length, hence disabling
GCMIV128.

Add a dedicated function, Validate(), with open-coded validation
logic.

The validation and creation logic also gets XChaCha20Poly1305
support, and gocryptfs -init -xchacha now writes the flag into
gocryptfs.conf.
2021-08-23 16:00:41 +02:00
Jakob Unterwurzacher 4764a9bde0 Add partial XChaCha20-Poly1305 support (mount flag only)
Mount flag only at the moment, not saved to gocryptfs.conf.

https://github.com/rfjakob/gocryptfs/issues/452
2021-08-23 16:00:41 +02:00
Jakob Unterwurzacher 69d88505fd go mod: declare module version v2
Our git version is v2+ for some time now, but go.mod
still declared v1. Hopefully making both match makes
https://pkg.go.dev/github.com/rfjakob/gocryptfs/v2 work.

All the import paths have been fixed like this:

  find . -name \*.go | xargs sed -i s%github.com/rfjakob/gocryptfs/%github.com/rfjakob/gocryptfs/v2/%
2021-08-23 15:05:15 +02:00
Jakob Unterwurzacher c9abfc8f06 ensurefds012: package comment should preceded package statement
This makes the comment visible to godoc.
2021-08-23 11:04:22 +02:00