libgocryptfs/internal/contentenc/content_test.go

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Major refactoring: Split up "cryptfs" into several internal packages "git status" for reference: deleted: cryptfs/cryptfs.go deleted: cryptfs/names_core.go modified: integration_tests/cli_test.go modified: integration_tests/helpers.go renamed: cryptfs/config_file.go -> internal/configfile/config_file.go renamed: cryptfs/config_test.go -> internal/configfile/config_test.go renamed: cryptfs/config_test/.gitignore -> internal/configfile/config_test/.gitignore renamed: cryptfs/config_test/PlaintextNames.conf -> internal/configfile/config_test/PlaintextNames.conf renamed: cryptfs/config_test/StrangeFeature.conf -> internal/configfile/config_test/StrangeFeature.conf renamed: cryptfs/config_test/v1.conf -> internal/configfile/config_test/v1.conf renamed: cryptfs/config_test/v2.conf -> internal/configfile/config_test/v2.conf renamed: cryptfs/kdf.go -> internal/configfile/kdf.go renamed: cryptfs/kdf_test.go -> internal/configfile/kdf_test.go renamed: cryptfs/cryptfs_content.go -> internal/contentenc/content.go new file: internal/contentenc/content_api.go renamed: cryptfs/content_test.go -> internal/contentenc/content_test.go renamed: cryptfs/file_header.go -> internal/contentenc/file_header.go renamed: cryptfs/intrablock.go -> internal/contentenc/intrablock.go renamed: cryptfs/address_translation.go -> internal/contentenc/offsets.go new file: internal/cryptocore/crypto_api.go renamed: cryptfs/gcm_go1.4.go -> internal/cryptocore/gcm_go1.4.go renamed: cryptfs/gcm_go1.5.go -> internal/cryptocore/gcm_go1.5.go renamed: cryptfs/nonce.go -> internal/cryptocore/nonce.go renamed: cryptfs/openssl_aead.go -> internal/cryptocore/openssl_aead.go renamed: cryptfs/openssl_benchmark.bash -> internal/cryptocore/openssl_benchmark.bash renamed: cryptfs/openssl_test.go -> internal/cryptocore/openssl_test.go new file: internal/nametransform/name_api.go new file: internal/nametransform/names_core.go renamed: cryptfs/names_diriv.go -> internal/nametransform/names_diriv.go renamed: cryptfs/names_noiv.go -> internal/nametransform/names_noiv.go renamed: cryptfs/names_test.go -> internal/nametransform/names_test.go new file: internal/nametransform/pad16.go renamed: cryptfs/log.go -> internal/toggledlog/log.go renamed: cryptfs/log_go1.4.go -> internal/toggledlog/log_go1.4.go renamed: cryptfs/log_go1.5.go -> internal/toggledlog/log_go1.5.go modified: main.go modified: masterkey.go modified: pathfs_frontend/file.go modified: pathfs_frontend/file_holes.go modified: pathfs_frontend/fs.go modified: pathfs_frontend/fs_dir.go modified: pathfs_frontend/names.go modified: test.bash
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package contentenc
import (
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"testing"
"github.com/rfjakob/gocryptfs/v2/internal/cryptocore"
)
type testRange struct {
offset uint64
length uint64
}
func TestSplitRange(t *testing.T) {
ranges := []testRange{
{0, 70000},
{0, 10},
{234, 6511},
{65444, 54},
{0, 1024 * 1024},
{0, 65536},
{6654, 8945},
}
key := make([]byte, cryptocore.KeyLen)
cc := cryptocore.New(key, cryptocore.BackendGoGCM, DefaultIVBits, true)
f := New(cc, DefaultBS)
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for _, r := range ranges {
parts := f.ExplodePlainRange(r.offset, r.length)
var lastBlockNo uint64 = 1 << 63
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for _, p := range parts {
if p.BlockNo == lastBlockNo {
t.Errorf("Duplicate block number %d", p.BlockNo)
}
lastBlockNo = p.BlockNo
if p.Length > DefaultBS || p.Skip >= DefaultBS {
t.Errorf("Test fail: n=%d, length=%d, offset=%d\n", p.BlockNo, p.Length, p.Skip)
}
}
}
}
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func TestCiphertextRange(t *testing.T) {
ranges := []testRange{
{0, 70000},
{0, 10},
{234, 6511},
{65444, 54},
{6654, 8945},
}
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key := make([]byte, cryptocore.KeyLen)
cc := cryptocore.New(key, cryptocore.BackendGoGCM, DefaultIVBits, true)
f := New(cc, DefaultBS)
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for _, r := range ranges {
blocks := f.ExplodePlainRange(r.offset, r.length)
alignedOffset, alignedLength := blocks[0].JointCiphertextRange(blocks)
skipBytes := blocks[0].Skip
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if alignedLength < r.length {
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t.Errorf("alignedLength=%d is smaller than length=%d", alignedLength, r.length)
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}
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if (alignedOffset-HeaderLen)%f.cipherBS != 0 {
t.Errorf("alignedOffset=%d is not aligned", alignedOffset)
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}
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if r.offset%f.plainBS != 0 && skipBytes == 0 {
t.Errorf("skipBytes=0")
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}
}
}
func TestBlockNo(t *testing.T) {
key := make([]byte, cryptocore.KeyLen)
cc := cryptocore.New(key, cryptocore.BackendGoGCM, DefaultIVBits, true)
f := New(cc, DefaultBS)
b := f.CipherOffToBlockNo(788)
if b != 0 {
t.Errorf("actual: %d", b)
}
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b = f.CipherOffToBlockNo(HeaderLen + f.cipherBS)
if b != 1 {
t.Errorf("actual: %d", b)
}
b = f.PlainOffToBlockNo(788)
if b != 0 {
t.Errorf("actual: %d", b)
}
b = f.PlainOffToBlockNo(f.plainBS)
if b != 1 {
t.Errorf("actual: %d", b)
}
}