p2pc-secure

Secure P2P-style file transfer via intermediate storage for NAT-restricted Linux systems.

Features

• Local Encryption: AES-256-GCM (authenticated encryption).
• Multiple Providers: Litterbox (default), File.io, PixelDrain, and Custom Relays.
• Visual Progress: Real-time progress bar for uploads/downloads.
• Improved UX: Visual ANSI colors, ASCII banners, and automatic command generation for recipients.

Installation

Linux

./install.sh

Windows

install.bat

Usage

Send a file

p2pc-secure send <file_path> [--password <pass>] [--provider <name>]

Supported providers:

• litterbox (default): 1GB limit. Files expire automatically after 1 hour (no manual delete).
• file.io: 2GB limit. Files are automatically deleted after the first download.
• pixeldrain: 5GB+ limit. Files expire after 30 days of inactivity.

Custom Relay

If you have your own server that can open ports, you can use it as a relay:

p2pc-secure send <file> --relay-url https://your-relay-server.com/upload

The relay should accept a POST request with the file and return the download URL as plain text.

Receive a file

p2pc-secure receive <url> --password <pass> [--output <path>]

Security

• All files are encrypted locally with AES-256-GCM before upload.
• The intermediate storage server never sees the plaintext data.
• Key derivation uses PBKDF2 with a unique salt.