Release v0.2.3

MigChat CLI v0.2.3

Major Encryption Fixes

🔒 Fixed Receiver-Side Session Establishment

• Implemented proper X3DH protocol for receivers to establish sessions from incoming messages
• Receivers now automatically derive matching session keys from sender's ephemeral key
• This fixes the "MAC verification failed" error when receiving encrypted messages

📨 Fixed Sent Message Display

• Sent messages are now displayed as [Your encrypted message] instead of attempting decryption
• This is correct E2E encryption behavior - you cannot decrypt your own sent messages after the ratchet advances
• Received messages from others decrypt properly using the receiver-side session

🪟 Fixed Windows PowerShell Installer (from v0.2.2)

• Simplified color output for better compatibility
• Better error reporting

How It Works Now

1. Sending a message:

   • You establish a session with recipient's key bundle
   • Message is encrypted and ratchet advances
   • Encrypted message is sent to server

2. Receiving a message:

   • If no session exists, receiver automatically establishes one from the encrypted message
   • Both parties now have matching session keys
   • Message decrypts successfully

3. Viewing conversations:

   • Your sent messages show as [Your encrypted message]
   • Received messages decrypt and show plaintext

Installation

Quick Install (Linux/macOS):
```bash
curl -fsSL https://raw.githubusercontent.com/migchat/cli/main/install.sh | bash
```

Quick Install (Windows):
```powershell
irm https://raw.githubusercontent.com/migchat/cli/main/install.ps1 | iex
```

Supported Platforms

• Linux x86_64, aarch64/ARM64
• macOS x86_64 (Intel), aarch64 (Apple Silicon)
• Windows x86_64, aarch64/ARM64

Testing

To test encryption between two accounts:

1. Create two accounts
2. Send a message from Account A to Account B
3. View the conversation on Account B - message should decrypt
4. View the conversation on Account A - sent message shows as [Your encrypted message]