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Differential D4384

Implement encryption-decryption layer for elementary file operations
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Authored by marcin on Jun 28 2022, 8:36 AM.
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• abosh
• adrian
ashoat
atul

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tomek
varun
• karol
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rCOMM99894c91276b: Implement encryption-decryption layer for elementary file operations
Summary

Implements encryption-decryption layer for flat-file message store operations.

Test Plan

Modify AppDelegate so that on AppLaunch it encrypts and decrypts some text then assert they are equal.

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Event Timeline

marcin created this revision.Jun 28 2022, 8:36 AM
Herald added subscribers: • abosh, atul, • adrian, ashoat. · View Herald TranscriptJun 28 2022, 8:36 AM
Harbormaster completed remote builds in B10059: Diff 13908.Jun 28 2022, 8:47 AM
marcin requested review of this revision.Jun 28 2022, 8:47 AM
marcin added a parent revision: D4383: Extend interface for elementary file operations with encryption-decryption layer by Obj-C style private interface for encryption end decryption.Jun 29 2022, 2:35 AM
marcin added a child revision: D4385: Implement elementary file operations with encryption-decryption layer.
• karol added a comment.Jun 29 2022, 6:41 AM

your diffs miss the prefixes in their titles ([native])

native/ios/Comm/TemporalMessageStorage/EncryptedFileUtils.mm
75 ↗(On Diff #13908)

newline

tomek accepted this revision.Jun 29 2022, 8:04 AM
tomek added inline comments.
native/ios/Comm/TemporalMessageStorage/EncryptedFileUtils.mm
16–17 ↗(On Diff #13908)

Shouldn't we use self?

61 ↗(On Diff #13908)

Why do we need to modify the length?

This revision is now accepted and ready to land.Jun 29 2022, 8:04 AM
marcin added inline comments.Jun 30 2022, 6:34 AM
native/ios/Comm/TemporalMessageStorage/EncryptedFileUtils.mm
16–17 ↗(On Diff #13908)

All methods in this class are static (or "type methods" speaking more Obj-C language), so we can't use self here. I decided to go with type methods since I don't see how to naturally introduce state for this class.

tomek added inline comments.Jun 30 2022, 6:45 AM
native/ios/Comm/TemporalMessageStorage/EncryptedFileUtils.mm
16–17 ↗(On Diff #13908)

Ok, that makes sense!

marcin updated this revision to Diff 14065.Jul 1 2022, 2:02 AM

Introduce files to project.pbxproj

Harbormaster completed remote builds in B10187: Diff 14065.Jul 1 2022, 2:14 AM
marcin edited the test plan for this revision. (Show Details)Jul 1 2022, 2:51 AM
marcin added inline comments.Jul 1 2022, 8:17 AM
native/ios/Comm/TemporalMessageStorage/EncryptedFileUtils.mm
61 ↗(On Diff #13908)

Length of the buffer might change during encryption/decryption process

marcin updated this revision to Diff 14152.Jul 5 2022, 3:21 AM

Manually implement padding. Switch to AES algorithm with ECB mode

Harbormaster failed remote builds in B10260: Diff 14152!Jul 5 2022, 3:21 AM
marcin updated this revision to Diff 14163.Jul 5 2022, 3:30 AM

Rebase master

Harbormaster completed remote builds in B10271: Diff 14163.Jul 5 2022, 4:39 AM
marcin updated this revision to Diff 14223.Jul 6 2022, 4:35 AM

Change encryption algorithm to AES CBC, decrypt each message separately

Harbormaster completed remote builds in B10317: Diff 14223.Jul 6 2022, 4:49 AM
marcin updated this revision to Diff 14271.Jul 7 2022, 7:07 AM

Rename Temporal to Temporary

marcin updated this revision to Diff 14272.Jul 7 2022, 7:08 AM

Rename Temporal to Temporary

Harbormaster completed remote builds in B10363: Diff 14271.Jul 7 2022, 7:38 AM
Harbormaster completed remote builds in B10364: Diff 14272.Jul 7 2022, 7:45 AM
marcin updated this revision to Diff 14465.Jul 14 2022, 4:49 AM

Rebase

Harbormaster completed remote builds in B10516: Diff 14465.Jul 14 2022, 5:08 AM
Closed by commit rCOMM99894c91276b: Implement encryption-decryption layer for elementary file operations (authored by marcin). · Explain WhyJul 14 2022, 5:10 AM
This revision was automatically updated to reflect the committed changes.
marcin added a commit: rCOMM99894c91276b: Implement encryption-decryption layer for elementary file operations.

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native/
ios/
Comm/
TemporalMessageStorage/
62 lines

Diff 14065

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native/ios/Comm/TemporalMessageStorage/EncryptedFileUtils.mm

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