DOH-dig script is added

Author: shraddha761

Crypt_Socket/Readme.md

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+# Crypt_Socket
+
+Basic client-server application for secure socket communication in Python, using SSL/TLS encryption. The code demonstrates how to establish a secure connection between a server and a client, ensuring confidentiality and integrity of the transmitted data.
+
+
+## Usage
+
+ Follow the prompts in the client terminal to enter messages. The messages will be encrypted using SSL/TLS and securely transmitted to the server. The server will decrypt and display the received messages.
+
+ To exit the client or server, enter the message "quit" in the client terminal.
+
+## Security Considerations
+
+The code provided demonstrates a basic implementation of SSL/TLS encryption using Python's `ssl` module and the `cryptography` library. However, for production use or in scenarios where stronger security is required, additional security measures should be implemented, such as:
+
+- Proper certificate management: Use trusted certificates signed by a trusted certificate authority (CA) to ensure secure communication.
+- Secure cipher suites: Configure the SSL/TLS cipher suites to use strong encryption algorithms and key exchange mechanisms.
+- Secure key management: Protect the private keys used for SSL/TLS encryption and ensure secure key generation, storage, and rotation.
+
+It's important to consult SSL/TLS best practices and consider the specific security requirements of your application for a robust and secure implementation.
+
+

Crypt_Socket/crypt_socket.py

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+import socket
+import ssl
+
+# Create a socket object
+server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+
+# Bind the socket to a specific address and port
+server_socket.bind(('localhost', 12345))
+
+# Listen for incoming connections
+server_socket.listen(1)
+
+print('Server is listening...')
+
+# Accept a connection from a client
+client_socket, client_address = server_socket.accept()
+
+print('Connected to:', client_address)
+
+# Wrap the socket with SSL/TLS encryption
+ssl_socket = ssl.wrap_socket(client_socket, server_side=True, ssl_version=ssl.PROTOCOL_TLS)
+
+while True:
+    # Receive data from the client
+    data = ssl_socket.recv(1024)
+
+    # Decode and print the received data
+    print('Received:', data.decode())
+
+    # If the client sends 'quit', close the connection
+    if data.decode() == 'quit':
+        break
+
+# Close the SSL/TLS socket
+ssl_socket.close()
+
+# Close the server socket
+server_socket.close()

SCRIPTS.md

@@ -100,4 +100,6 @@
 | 96\.     | Sorting Techniques | Sorting techniques are scripts that arrange a collection of data elements in a particular order, typically ascending or descending. | [Take Me](./Sorting%20Techniques/) | [Himanshu Agarwal](https://github.com/himanshu-03)
 | 99\.     | File Organizer script | A File Organizer script is a program or script that automates the process of organizing files within a directory or multiple directories | [Take Me](./File Organizer script/) | [Abhinav kumar](https://github.com/Abhinavcode13)
 | 100\.     | File Encryption/Decryption script | A File Organizer script is a program or script that automates the process of organizing files within a directory or multiple directories | [Take Me](./File Encryption/Decryption script/) | [Abhinav kumar](https://github.com/Abhinavcode13)
+| 101\.     | Crypt_Socket | Basic client-server application for secure socket communication in Python, using SSL/TLS encryption. The code demonstrates how to establish a secure connection between a server and a client, ensuring confidentiality and integrity of the transmitted data.
+ | [Take Me](./Crypt_Socket/) | [Shraddha SIngh](https://github.com/shraddha761)