Go TCP File Transfer

A secure file transfer tool built in Go that uses TCP with AES-GCM encryption.

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Features

• Secure file transfer using TCP
• AES-GCM encryption for data security
• Simple command-line interface
• Support for large files
• Automatic key generation for server

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Installation

1. Make sure you have Go 1.21 or later installed
2. Clone this repository
3. Run go mod download to install dependencies

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Usage

Starting the Server

go run main.go -mode server -port 8080

The server will start and display an encryption key. You'll need this key for the client.

Sending a File

go run main.go -mode client -port 8080 -file path/to/your/file -key <encryption-key>

Replace <encryption-key> with the key displayed by the server.

Example

1. Start the server:

go run main.go -mode server -port 8080

2. In another terminal, send a file:

go run main.go -mode client -port 8080 -file test.txt -key <key-from-server>

The file will be received in the received directory on the server side.

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Security

• Uses AES-GCM encryption for secure file transfer

• Each server instance generates a unique encryption key

• The key must be shared securely between server and client

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License

MIT