Age | Commit message (Collapse) | Author |
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Jobs currently fail like this:
/usr/bin/fusermount: option allow_other only allowed if 'user_allow_other' is set in /etc/fuse.conf
fs.Mount failed: fusermount exited with code 256
--- FAIL: TestForceOwner (0.05s)
main_test.go:438: mount failed: exit status 19
FAIL
FAIL github.com/rfjakob/gocryptfs/v2/tests/defaults 1.584s
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https://github.com/rfjakob/gocryptfs/issues/609
https://github.com/rfjakob/gocryptfs/pull/610
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Reported by codacity:
internal/cryptocore/cryptocore.go
Minor icon MINOR
Code Style
should omit type AEADTypeEnum from declaration of var BackendAESSIV; it will be inferred from the right-hand side
var BackendAESSIV AEADTypeEnum = AEADTypeEnum{"AES-SIV-512", "Go", siv_aead.NonceSize}
Minor icon MINOR
Code Style
should omit type AEADTypeEnum from declaration of var BackendXChaCha20Poly1305; it will be inferred from the right-hand side
var BackendXChaCha20Poly1305 AEADTypeEnum = AEADTypeEnum{"XChaCha20-Poly1305", "Go", chacha20poly1305.NonceSizeX}
Minor icon MINOR
Code Style
should omit type AEADTypeEnum from declaration of var BackendXChaCha20Poly1305OpenSSL; it will be inferred from the right-hand side
var BackendXChaCha20Poly1305OpenSSL AEADTypeEnum = AEADTypeEnum{"XChaCha20-Poly1305", "OpenSSL", chacha20poly1305.NonceSizeX}
Found 2 possible new issues
internal/cryptocore/cryptocore.go
Minor icon MINOR
Code Style
should omit type AEADTypeEnum from declaration of var BackendOpenSSL; it will be inferred from the right-hand side
var BackendOpenSSL AEADTypeEnum = AEADTypeEnum{"AES-GCM-256", "OpenSSL", 16}
Minor icon MINOR
Code Style
should omit type AEADTypeEnum from declaration of var BackendGoGCM; it will be inferred from the right-hand side
var BackendGoGCM AEADTypeEnum = AEADTypeEnum{"AES-GCM-256", "Go", 16}
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GNU date syntax does not work on macos.
Fixes https://github.com/rfjakob/gocryptfs/issues/570
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Example on Raspberry Pi 4:
$ ./gocryptfs/gocryptfs -init $(mktemp -d)
Notice: Your CPU does not have AES acceleration. Consider using -xchacha for better performance.
Choose a password for protecting your files.
Password:
https://github.com/rfjakob/gocryptfs/issues/607
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Example:
$ ./gocryptfs -info ./tests/example_filesystems/v2.2-xchacha/
Creator: gocryptfs v2.1-27-gabaa129-dirty.xchacha
FeatureFlags: HKDF XChaCha20Poly1305 DirIV EMENames LongNames Raw64
EncryptedKey: 64B
ScryptObject: Salt=32B N=1024 R=8 P=1 KeyLen=32
contentEncryption: XChaCha20-Poly1305
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Used in gocryptfs-xray, and will also be used in -info.
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This allows to anchor-link in to each release.
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pkg.go.dev really wants that we want to comply with
https://golang.org/doc/modules/version-numbers .
Trying v2.2-beta1 as in
https://pkg.go.dev/github.com/rfjakob/gocryptfs/v2@v2.2-beta1
said "v2.2-beta1 is not a valid semantic version.".
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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)
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Makes the code clearer, and will be used in the next commit.
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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.
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The rewritten openssl backend does not support this flag anymore,
and it was inherently dangerour. Drop it (ignored for compatibility)
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This can print out compile errors that are hard to understand
if you are not aware that it builds without_openssl.
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Now that stupidgcm supports xchacha, make it available
on mount.
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Add PreferOpenSSLXchacha20poly1305,
rename PreferOpenSSL -> PreferOpenSSLAES256GCM.
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New() -> NewAES256GCM()
Also add missing NewChacha20poly1305
constructor in without_openssl.go.
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Maybe interesting for people following
https://github.com/rfjakob/gocryptfs/issues/452
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No need to have it exported.
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We used to panic in this case because it is useless.
But Go stdlib supports it, so we should as well.
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We missed some "// +build" lines
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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)
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Verifies that we don't corrupt data when called concurrently.
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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)
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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
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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
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$ ./build-without-openssl.bash
internal/speed/speed.go:152:14: undefined: stupidgcm.NewXchacha20poly1305
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This found a lot of panics in the new file openssl_aead.c.
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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)
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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)
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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
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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)
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$ 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)
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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)
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$ ./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
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Implementation copied from
https://github.com/golang/crypto/blob/32db794688a5a24a23a43f2a984cecd5b3d8da58/chacha20poly1305/xchacha20poly1305.go
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