christophhagen/libsignal-protocol-swift

A Swift wrapper framework for libsignal-protocol-c

I'm a passionate programmer/engineer/scientist who likes to try new things, currently based in Munich, Germany.

My main interests in no particular order:

• 🚀 Space science and technology
• 🏄🏻 Outdoor sports
• 🪚 Different types of craftsmanship
• 📷 Photography
• 📺 Technological progress
• 🚦 Ethics
• 💻 Computers and programming

You can find some of my other projects on my website christophhagen.de

Repositories

Most of my repositories are written in/for Swift, because it's a very modern, safe, and versatile language.

• BinaryCodable is a binary encoder/decoder for Swift Codable types
• HealthKitExtensions makes it easier to work with Apple HealthKit
• HealthDB is an interface to the Health database from an iOS Backup (healthdb_secure.sqlite)
• Clairvoyant is a simple metrics system for logging and remote monitoring
• SwiftSerial allows using a Linux serial port in Swift
• Daly-Swift, NextcloudStatus and Growatt-Swift are interfaces to devices

There are many more repositories, also in C++ for my embedded projects.

And who doesn't enjoy a few statistics?

libsignal-protocol-swift's Issues

Storing keys of recipient's.

I'm new to Swift so maybe this question is stupid, but here it is. Is there a method in this lib to save recipient's keys on a safe place when i receive them from server or shoud i write them my self?

Universal Framework

does this single framework work on Debug and Release mode?

Weird issue with encryption + `SignalAddress`

When encrypting a message the framework invokes its delegate stores in order to do some processing. This is done when invoking encrypt(_:) on a SessionCipher. In order to create a SessionCipher a remoteAddress is needed. Lets say we create the remoteAddress with let remoteAddress = SignalAddress(name: userId.description, deviceId: 1). Now when checking the values the remoteAddress contains (name + deviceId) I get the following correct values: userId = "1" and deviceId = 1.

Then something weird happens when encrypt(_:) is invoked. The first method that is invoked by the framework is loadSession(for:) - SessionStore. The loadSession(for:) method gets the remoteAddress as a parameter.

Now checking the values of the remoteAddress the method did receive the deviceId equals 1, but the name does not equal. Instead of getting "1" I get this: "1\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}Hrkt\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}\u{ef}U\u{ef}\u{ef}\u{ef}ݺ\u{ef}i"

Every time when encrypt(_:) is invoked the name of the address changes. But the string always starts with the original name (here "1").

I wrote some unit tests and when running non of them show this issue. This only happens on actually running the application on device or on simulator.

Here a picture of the original address that was handed over to the session cipher object:

And here the same address, that was handed over to the store delegates:

GroupCipherTests

error: -[libsignal_protocol_swiftTests.GroupCipherTests testExample] : failed - Could no encrypt message noSession

EXC_BAD_ACCESS crash while running in multithreading decryption logic

Hello,

I am facing a crash in setStore method at line delegates[id] = delegate saying EXC_BAD_ACCESS

It seems because of multiple threads trying to setStore, the delegate it is trying to set in the dictionary for the id is empty.

Kindly help me with a solution.

Xcode 10 Beta 6 Compiling Issue

Compiling the framework with Xcode 10 Beta 6 does not work. I'm getting the following error: Command CompileSwiftSources failed with a nonzero exit code. In order to reproduce the error just download the framework and try to build it.

How can I solve this issue?

In decrypt I am getting error legacyMessage : Unsupported legacy version

Hi,

I've written a sample project using the library to encrypt and decrypt. While decrypting I am passing the message as below:
let message = "Hi, This is First Encrypt Message".data(using: .utf8)
let encryptedMessage = try cipher.encrypt(message!)
let encString = encryptedMessage.data.base64EncodedString()
Now at the decrypt
let encrData: Data = Data(base64Encoded: encString, options: .ignoreUnknownCharacters)!
let decryptedMessage = try cipher.decrypt(preKeySignalMessage: encrData)

I also tried out without the base64EncodedString. Then the code is as below:
let message = "Hi, This is First Encrypt Message".data(using: .utf8)
let encryptedMessage = try cipher.encrypt(message!)
let encString = encryptedMessage.data
Decrypt:
let decryptedMessage = try cipher.decrypt(preKeySignalMessage: encString)

I am getting the error : [WARNING] Unsupported legacy version: 0

Please help me out to resolve the issue.

UnsafeMutablePointer MemoryLayout problem

Should use MemoryLayout.size allocate memory

GPLv3 License - Open Source?

The "libsignal-protocol-swift" uses the GPLv3 License. Does this mean I have to open source my closed source project when using this library?

If yes, do I have to open source the whole project or only parts of my code that use and interact with the library?

Legacy Version

Hello,

Is there any way to support old version of signal?. I am getting legacyMessage error.