PHI

Secure messaging app that lives in your terminal.
Named after Pheidippides (Φειδιππίδης) who ran 25 miles from Marathon to Athens in order to deliver a message.

📊 FEATURES

👤 USER EXPERIENCE

• SQLite3 database to hold user data - SQLiteC++
  • Password protected
• Advanced and intuitive Terminal User Interface - FTXUI
  • Built in screensaver (Credit: Oakamoore) - TERMINAL-RAIN

🔒 SECURITY

Important

As soon as core functionality and security measures listed below are user-ready, quantum-safe security will be implemented by replacing RSA with CRYSTALS-Kyber (ML-KEM). Everything else will stay largely the same.

Important

Database API is primed for password protection, the only roadblock is SQLiteC++ and CMake

• GZip (L3) compression for messages - zlib
• ChaCha20-Poly1305 encryption for messages - libsodium
• RSA (4096) encryption for CC20 session keys - Crypto++
  • Provides performant and secure hybrid encryption, inspiration from PGP
• BLAKE2b signature to ensure no tampering - Crypto++
  • Also uses MAC (with shared secret) signature to ensure sender integrity - libsodium
    • Diffie-Hellmann key exchange technique for shared secrets - libsodium

⤵️ INSTALLATION

LINUX (Debian/Ubuntu)

Build yourself:

sudo apt install zlib1g-dev  # install zlib

git clone https://www.github.com/TrynaThinkOf1/phi.git
cd phi/

python3 sysutils.py  # select option 2

sudo mv phi /usr/bin/phi
sudo mv phid /usr/bin/phid

sudo systemctl enable phid

phi  # then proceed with setup

sudo systemctl start phid

MACOS

Build yourself:

git clone https://www.github.com/TrynaThinkOf1/phi.git
cd phi/

python3 sysutils.py  # select option 2

sudo mv phi /usr/local/bin/phi

echo 'PATH="/usr/local/bin:$PATH"' >> ~/.zshrc

# something about daemon setup

WINDOWS

Unfortunately, Phi is not available for windows yet. Coming soon.