Learn about SEED Encryption

Table of Contents

1. Introduction
2. Setting Up the Demo
3. Compiling the Programs
4. Configuring the Server
5. Configuring the Client
6. Generating Keys
7. Establishing Connection
8. Sending Files
9. Verifying Integrity
10. Remaking Session Key
11. Seed Encryption and Decryption
12. Conclusion

Introduction

In this article, we will explore a demo video for Assignment One, showcasing the use of two virtual machines (VMs) as a server and client. We will go step-by-step through the process, including setting up the demo, compiling the programs, configuring the server and client, generating keys, establishing a connection, sending files, verifying integrity, remaking the session key, and using seed encryption and decryption. By the end of this article, You will have a comprehensive understanding of the entire demo process.

Setting Up the Demo

Before we dive into the demo, we need to set up the environment correctly. This involves creating two VMs - one as the server and the other as the client. We will assign specific roles and directories to each VM, ensuring smooth communication between them. Once the setup is complete, we can proceed to compile the necessary programs.

Compiling the Programs

In order to run the demo successfully, we need to compile the two programs - one for the server and one for the client. This step ensures that the programs are ready to be executed and perform the required tasks. We will compile the programs separately and check for any errors or issues before moving forward.

Configuring the Server

After compiling the server program, we need to configure it to host the server. This involves setting up a directory for the server to store and access files. We will Create a specific directory for this purpose, ensuring that it is ready to receive files from the client.

Configuring the Client

Similarly, we need to configure the client program to establish a connection with the server. This involves specifying the appropriate IP address and port number to connect to the server. We will generate the necessary files and configure the client accordingly, ensuring a successful connection.

Generating Keys

To ensure secure communication between the server and client, we need to generate keys for encryption and decryption. This step involves using a key generator to create the required keys. We will generate both public and private keys for the server and client, ensuring a secure and encrypted connection.

Establishing Connection

Now that the server and client are configured correctly and the keys are generated, we can proceed to establish a connection between them. This involves the client sending a request to connect to the server and providing the necessary client name. Once the connection is established, the server and client can communicate with each other.

Sending Files

With the connection established, the client can now send files to the server. This step involves selecting the desired file(s) to be sent and transferring them securely to the server. We will ensure that the files are sent successfully by checking the server terminal for the received files.

Verifying Integrity

After the files are sent, we need to ensure that their integrity is maintained throughout the transmission process. This involves performing an integrity check on the received files to verify their authenticity. We will compare the hash values of the sent and received files to ensure they match, indicating a successful and secure transmission.

Remaking Session Key

To enhance security, we will remake the session key between the server and client. This step involves updating the session key file by replacing specific bytes with random noise. We will modify the session key to ensure a strong and secure encryption/decryption process.

Seed Encryption and Decryption

Finally, we will explore the seed encryption and decryption process. This step involves using seed encryption to encrypt a message using the session key and an initialization vector (IV). We will demonstrate how the encryption process works and how the decryption process takes place on both the server and client sides.

Conclusion

In conclusion, this article has provided a comprehensive overview of the demo video for Assignment One. We have covered the setup process, program compilation, server and client configuration, key generation, connection establishment, file transmission, integrity verification, session key remaking, and seed encryption and decryption. By following this step-by-step guide, you can successfully replicate the demo and gain a deeper understanding of the concepts involved.

Highlights

1. Step-by-step guide for setting up a server-client demo
2. Compilation of necessary programs for smooth execution
3. Configuration of server and client for seamless communication
4. Generation of secure keys for encryption and decryption
5. Establishing a secure connection between server and client
6. Sending files securely and verifying their integrity
7. Remaking the session key for enhanced security
8. Explanation of seed encryption and decryption process

FAQs

Q: Is it necessary to use virtual machines for the demo? A: Using virtual machines is not mandatory for the demo, but it provides a safe and isolated environment for testing and practicing server-client communication.

Q: Can I use different programming languages for the server and client programs? A: Yes, you can use different programming languages for the server and client programs as long as they can establish a connection and communicate effectively.

Q: How secure is the communication between the server and client? A: The communication between the server and client is secure due to the encryption and decryption processes, along with the use of keys and integrity verification. However, it is always advisable to follow best security practices and keep the software and systems up to date.

Q: How often should I remake the session key? A: It is recommended to remake the session key periodically or after a significant number of file transmissions to maintain a higher level of security.

Q: Are there any limitations on the file size that can be transmitted? A: The file size limitation depends on various factors, including the system's hardware capability, network bandwidth, and the configurations set for the server and client programs. It is recommended to check the specifications and limitations of the tools and libraries used for the demo.

Q: Can I modify the encryption and decryption algorithms used in the demo? A: Yes, you can modify the encryption and decryption algorithms according to your requirements. However, it is essential to understand the implications and potential security vulnerabilities associated with any changes made.

Q: How can I ensure the authenticity and security of the files during transmission? A: By performing integrity checks, comparing hash values, and using secure encryption and decryption methods, you can ensure the authenticity and security of the files during transmission.

Q: Are there any recommended resources to learn more about server-client communication and encryption techniques? A: Yes, there are numerous online resources, tutorials, and books available to learn more about server-client communication and encryption techniques. Some recommended resources include official documentation of programming languages, network security books, and online tutorials and courses on computer networks and cryptography.