Secure Notebook || C Code Projects for School students

 Reference: CCP_L01_C03_Secure Notebook

Introduction

In today’s digital world, securing personal notes is essential. Whether it’s passwords, diary entries, or private thoughts, a password-protected notebook is a great way to keep sensitive information safe. This blog post walks you through a C-based Secure Notebook, an academic project for students (ages 8–16), built using Code::Blocks IDE with MinGW Compiler.

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🔹 Features of Secure Notebook in C

This project provides basic security & encryption using simple XOR encryption for storing notes safely.
 Here’s what you can do with this system:

✅ Password Protection: Secure login using a stored encrypted password.
 ✅ Note Encryption: Notes are stored in an encrypted format for security.
 ✅ File-based Storage: Notes are saved in a .dat file for easy retrieval.
 ✅ Add, View, and Delete Notes: Users can create, view, and delete notes.
 ✅ User-Friendly Interface: A simple text-based menu system for easy interaction.

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🔹 System Workflow (How It Works)

1️⃣ User Authentication: The system asks for a password before granting access.
 2️⃣ Note Management: Users can add, view, or delete notes.
 3️⃣ Encryption & Decryption: Notes are encrypted before storage and decrypted when viewed.
 4️⃣ File Handling: The system stores notes in a notes.dat file, and a password is stored in password.dat.

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🔹 How to Run the Project in Code::Blocks IDE

Step 1: Open Code::Blocks IDE → Create a new C file.
 Step 2: Copy & Paste the Secure Notebook C Code.
 Step 3: Save the file as secure_notebook.c.
 Step 4: Click "Build & Run" (F9) to start the program.
 Step 5: Follow the menu instructions to set a password, add, view, and delete notes.

💡 File Locations:

●     password.dat → Stores encrypted password.

●     notes.dat → Stores encrypted notes.

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🔹 Sample Code Snippet

void encryptDecrypt(char *text) {

    while (*text) {

        *text ^= 'S'; // Simple XOR encryption

        text++;

    }

}

 

This function encrypts and decrypts notes using an XOR cipher, making stored data unreadable to outsiders.

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🔹 Enhancements & Future Improvements

🚀 Implement AES encryption for stronger security.
 🚀 Add Multi-User Support for separate notebooks.
 🚀 Develop a GUI version using the ncurses library.

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🔹 Conclusion

This Secure Notebook in C is a perfect academic project to learn about file handling, encryption, and authentication. It’s a great way for beginners to practice C programming while building a practical tool.

💡 Ready to build your own Secure Notebook? 🚀
 Try coding it today and keep your notes safe!

📌 Download Full Code & More C Projects Below In the eBook link! 👇

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Brief About “C Code Projects for Beginner Students (Ages 8-16)" eBook

Are you a school student aged 8 to 16 with a budding interest in programming, or perhaps looking for a hands-on way to master C language for your academic projects? Look no further! I am thrilled to announce the launch of "C Code Projects for Beginner Students," your ultimate guide to practical C programming.

 

Ready to start your coding adventure?

[Click below any links to get your copy of "C Code Projects for Beginner Students (Ages 8-16)"!]

 

eBook CCP_L01 Link:

https://play.google.com/store/books/details?id=KS54EQAAQBAJ  [Google Play Store]

https://books.google.co.in/books?id=KS54EQAAQBAJ   [Google Books]

 

Enjoy this eBook CCP_L01 on ‘C Code Projects for Beginner Students’ series and do not forget to explore other resources related to this series eBook. Thanks for visiting my blog.

 

EBOOK CCP_L01 promotion Blog Link:

https://myspacemywork2024.blogspot.com/2025/08/unlock-world-of-code-introducing-c-code.html

 

Happy Reading!

…till next post, bye-bye & take care!