🔐 AES Encryption Demo

A secure and efficient AES encryption and decryption demo built with .NET 10, demonstrating industry-standard cryptographic practices.

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🌟 Key Highlights

• Secure AES-256 Encryption: Advanced encryption using AES in CBC mode with PKCS7 padding.
• Dynamic IV Generation: Each encryption operation generates a cryptographically secure Initialization Vector (IV).
• Integrated IV Management: IVs are seamlessly prepended to ciphertext for convenient and secure decryption.
• Base64 Encoding: Easily store and transmit encrypted data using Base64 encoding.
• Robust Exception Handling: Proactive error detection and handling for enhanced reliability.
• Streamlined Data Processing: Efficient cryptographic operations leveraging stream-based APIs.

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🚀 Quick Start Guide

Here's a concise example to quickly get you started:

// Generate a secure 256-bit key
byte[] masterKey = RandomNumberGenerator.GetBytes(32);

// Encrypt your message
string encrypted = Encrypt("Your confidential message", masterKey);
Console.WriteLine($"Encrypted: {encrypted}");

// Decrypt the message
string decrypted = Decrypt(encrypted, masterKey);
Console.WriteLine($"Decrypted: {decrypted}");

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📦 Installation Steps

1. Clone this repository

git clone https://github.com/MrEshboboyev/Encryption.Demo.git

2. Launch with Visual Studio

• Open the solution in Visual Studio 2022 or your preferred compatible IDE.
• Build and run the application.

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🔑 Secure Design Principles

• AES-256 Encryption: Optimal security with a 256-bit key size.
• CBC Mode with PKCS7 Padding: Ensures data integrity and security.
• Secure Random IV: Prevents cryptographic vulnerabilities through unique IV generation per encryption.
• Comprehensive Error Handling: Reliable cryptographic operations with robust error catching and logging.

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🛡️ Best Security Practices

To maximize the security and effectiveness of your encryption:

• Securely store and manage keys in protected environments.
• Avoid IV reuse; always generate a new IV for each encryption.
• Rotate encryption keys periodically.
• Use secure channels for transmitting encryption keys.
• Regularly audit and update your cryptographic libraries and dependencies.

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📚 Usage Example with File Operations

// Read plaintext from file
string plainText = await File.ReadAllTextAsync("plainText.txt");

// Generate secure key
byte[] masterKey = RandomNumberGenerator.GetBytes(32);

// Encrypt data
string encryptedData = Encrypt(plainText, masterKey);
await File.WriteAllTextAsync("encrypted.txt", encryptedData);
Console.WriteLine("Data encrypted successfully!");

// Decrypt data
string decryptedData = Decrypt(encryptedData, masterKey);
await File.WriteAllTextAsync("decrypted.txt", decryptedData);
Console.WriteLine("Data decrypted successfully!");

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📌 Prerequisites

• .NET 10.0 or higher
• Visual Studio 2022 or another compatible IDE

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🤝 Contributing

Your contributions are warmly welcomed! Feel free to:

• Submit issues
• Propose enhancements
• Create pull requests

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📄 License

Distributed under the MIT License. See LICENSE for more details.