Secure File Transfer via SFTP in Python

Transferring files securely is critical in maintaining data integrity. SFTP (SSH File Transfer Protocol) is a secure protocol that ensures file transfers over SSH (Secure Shell) connections.

For Python developers looking to implement SFTP functionality, a library like Paramiko is highly recommended. Paramiko provides a robust framework for establishing and managing SFTP sessions. Here's how you can use Paramiko for secure file transfer:

import paramiko

# Host, port and user information (hard-coded)
host = "THEHOST.com"
port = 22
username = "THEUSERNAME"
password = "THEPASSWORD"

# Establish an SSH and SFTP connection
transport = paramiko.Transport((host, port))
transport.connect(username=username, password=password)
sftp = paramiko.SFTPClient.from_transport(transport)

# Define remote and local file paths (hard-coded)
remote_path = './THETARGETDIRECTORY/' + file
local_path = file

# Upload the file
sftp.put(local_path, remote_path)

# Close file and transport connections
sftp.close()
transport.close()

print("Upload complete.")

By leveraging Paramiko and SFTP, Python developers can securely transfer files between remote hosts, maintaining the confidentiality and integrity of sensitive data.