hardcoresushi/libgocryptfs
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21 Commits

Author SHA1 Message Date
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
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
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
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
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
5f1094b164 -speed: note that -xchacha is selectable 2021-08-24 14:02:12 +02:00
Jakob Unterwurzacher
dfb7fae52a speed: use algo names from cryptocore 2021-08-23 22:13:49 +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
5da20da977 -speed: note that XChaCha20 is not selectable 
This is unclear to users, as seen on
https://github.com/rfjakob/gocryptfs/issues/452#issuecomment-828836651
 2021-05-18 09:53:23 +02:00
Jakob Unterwurzacher
194030f18a speed: add XChaCha20-Poly1305-Go 
https://github.com/rfjakob/gocryptfs/issues/452
 2020-04-13 14:54:04 +02:00
Jakob Unterwurzacher
f82b9caa9c speed: add code comments 2020-02-29 21:26:28 +01:00
Jakob Unterwurzacher
d5ce340c02 merge prefer_openssl package into stupidgcm 
Now that I have discovered golang.org/x/sys/cpu and that Go
versions below 1.6 are uncommon, there was not much useful
code left in prefer_openssl.

Merge the remains into stupidgcm.
 2020-02-15 17:21:30 +01:00
Jakob Unterwurzacher
edb3e19cb5 fix golint complaints 2017-04-29 14:50:58 +02:00
danim7
f1945c4daa Add -forcedecode 
Force decode of encrypted files even if the integrity check fails, instead of
failing with an IO error. Warning messages are still printed to syslog if corrupted
files are encountered.
It can be useful to recover files from disks with bad sectors or other corrupted
media.

Closes https://github.com/rfjakob/gocryptfs/pull/102 .
 2017-04-23 23:11:56 +02:00
Jakob Unterwurzacher
966308eeb7 Drop Go 1.4 compatability code everywhere 
Yields a nice reduction in code size.
 2017-03-05 17:44:14 +01:00
Jakob Unterwurzacher
43d6aa6677 speed: add benchmark.bash helper 2017-02-24 09:38:50 +01:00
Jakob Unterwurzacher
477071d673 speed: fix build for Go 1.4 and lower 
Old Go versions miss cipher.NewGCMWithNonceSize, which causes:

  internal/speed/speed.go:95: undefined: cipher.NewGCMWithNonceSize
 2017-02-23 00:04:51 +01:00
Jakob Unterwurzacher
1e03e059fa Implement "gocryptfs -speed" 
A crypto benchmark mode like "openssl speed".

Example run:

  $ ./gocryptfs -speed
  AES-GCM-256-OpenSSL 	 180.89 MB/s	(selected in auto mode)
  AES-GCM-256-Go      	  48.19 MB/s
  AES-SIV-512-Go      	  37.40 MB/s
 2017-02-22 23:56:34 +01:00