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Author SHA1 Message Date
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
cbf282861b tests/matrix: don't leak fds in TestConcurrentReadCreate 
We leaked a file descriptor for each empty file we encountered.
 2021-09-01 10:28:33 +02:00
a1346054
7c2255be90 *: trim trailing whitespace 2021-09-01 10:22:01 +02:00
a1346054
6cb03b54fe *: fix spelling 2021-09-01 10:22:01 +02:00
a1346054
c63f7e9f64 shell scripts: fix shellcheck warnings 2021-09-01 10:22:01 +02:00
Jakob Unterwurzacher
c505e73a13 README: explain where -xchacha makes sense 2021-08-30 20:00:00 +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
17fe50ef74 README: compress Installation section 
More content, less whitespace.
 2021-08-30 10:18:33 +02:00
Jakob Unterwurzacher
fab4ca07de README: update changelog 2021-08-30 10:18:23 +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
Jakob Unterwurzacher
e69a85769f go mod: upgrade go-fuse to fix darwin build failure 
Upgraded using

  go get -u github.com/hanwen/go-fuse/v2@master

to get 61df810860

Fixes https://github.com/rfjakob/gocryptfs/issues/597
 2021-08-29 19:43:26 +02:00
Jakob Unterwurzacher
91d3b30c1c doc: file-format.md: describe XChaCha20-Poly1305 
Different nonce size.
 2021-08-26 08:43:41 +02:00
Jakob Unterwurzacher
7b25ff39c8 fsstress-gocryptfs: fuse-xfstests now lives in /opt 
fuse-xfstests should be installed to /opt now to make
the terminal output independent of the user name
(as done in https://github.com/rfjakob/fuse-xfstests/wiki/results_2021-06-02 )
 2021-08-26 07:46:28 +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
b3d26b7264 go mod: update go-fuse 
We want /dev/fd/N support:

  74a933d6e8
  "fuse: support special /dev/fd/N mountpoint"

Fixes https://github.com/rfjakob/gocryptfs/issues/590
 2021-08-25 12:17:26 +02:00
Jakob Unterwurzacher
a4ed1aab00 README: add -xchacha to changelog 
https://github.com/rfjakob/gocryptfs/issues/452
 2021-08-24 14:06:01 +02:00
Jakob Unterwurzacher
24bb28a517 MANPAGE: add -xchacha 2021-08-24 14:05:52 +02:00
Jakob Unterwurzacher
5f1094b164 -speed: note that -xchacha is selectable 2021-08-24 14:02:12 +02:00
Jakob Unterwurzacher
ab7308639b tests/example_filesystems: add v2.2-xchacha-deterministic-names 
Combines both new flags.
 2021-08-24 13:53:50 +02:00
Jakob Unterwurzacher
d70875aaa9 tests/example_filesystems: add deterministic-names and xchacha 2021-08-24 13:50:07 +02:00
Jakob Unterwurzacher
62ed081c5e benchmark.bash: add -xchacha support 2021-08-24 13:30:09 +02:00
Jakob Unterwurzacher
abaa12992c xray: add xchacha support 
Also use the new cryptocore algo names.
 2021-08-23 22:19:30 +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
b12ad292d4 tests/cli: add -xchacha tests 2021-08-23 16:17:04 +02:00
Jakob Unterwurzacher
2fb1d52746 tests/matrix: add -xchacha test 2021-08-23 16:00:41 +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
b02812f8b3 test/cli: actually run TestZerokey 
As the filename did not end in _test.go, TestZerokey
was not actually run. Fix that.
	renamed:    tests/cli/zerokey.go -> tests/cli/zerokey_test.go
 2021-08-23 15:17:04 +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
Jakob Unterwurzacher
b603169d2c configfile: pass struct to Create 2/2 
Drop Create and rename Create2 to Create.
 2021-08-21 14:04:04 +02:00
Jakob Unterwurzacher
4b93525249 configfile: pass struct to Create 1/2 
The argument list got too long.

Part 1: Replace with Create2
 2021-08-21 14:01:58 +02:00
Jakob Unterwurzacher
2da0e13b1d cryptocore: drop IVLen helper var 
The IVLen var seems be a net loss in clarity. Drop it.

Also add comments and normalize error messages.
 2021-08-21 10:55:20 +02:00
Jakob Unterwurzacher
f6be765ef6 README: Update changelog with -deterministic-names 
Fixes https://github.com/rfjakob/gocryptfs/issues/151
Fixes https://github.com/rfjakob/gocryptfs/issues/402
Fixes https://github.com/rfjakob/gocryptfs/pull/592

Partial-fix https://github.com/rfjakob/gocryptfs/issues/108
 2021-08-20 17:16:23 +02:00