AES encryption in C#: Practical Guide

Introduction

In the field of data security, high -level encryption standards (AES) are highly respected as an efficient symmetrical encryption algorithm. AES uses its powerful 128 -bit, 192 -bit, or 256 -bit key to ensure that your sensitive information is avoided from unauthorized access.

Example implementation

If you want to use AES's powerful features in the C# application, please consider the following code example:

Conclusion

using System;
using System.IO;
using System.Security.Cryptography;

namespace Aes加密示例
{
    class Program
    {
        static void Main()
        {
            try
            {
                // 原始數(shù)據(jù)
                string original = "機(jī)密信息";

                // 密鑰和初始化向量 (IV)
                byte[] key = { ... };
                byte[] iv = { ... };

                // 加密數(shù)據(jù)
                byte[] encrypted = Encrypt(original, key, iv);

                // 解密數(shù)據(jù)
                string decrypted = Decrypt(encrypted, key, iv);

                // 驗證解密
                if (original == decrypted)
                    Console.WriteLine("解密成功。");
                else
                    Console.WriteLine("解密失敗。");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"錯誤：{ex.Message}");
            }
        }

        // 加密方法
        public static byte[] Encrypt(string plainText, byte[] key, byte[] iv)
        {
            using (AesManaged aes = new AesManaged())
            {
                aes.Key = key;
                aes.IV = iv;
                using (MemoryStream ms = new MemoryStream())
                {
                    using (CryptoStream cs = new CryptoStream(ms, aes.CreateEncryptor(), CryptoStreamMode.Write))
                    {
                        using (StreamWriter sw = new StreamWriter(cs))
                        {
                            sw.Write(plainText);
                        }

                        return ms.ToArray();
                    }
                }
            }
        }

        // 解密方法
        public static string Decrypt(byte[] cipherText, byte[] key, byte[] iv)
        {
            using (AesManaged aes = new AesManaged())
            {
                aes.Key = key;
                aes.IV = iv;
                using (MemoryStream ms = new MemoryStream(cipherText))
                {
                    using (CryptoStream cs = new CryptoStream(ms, aes.CreateDecryptor(), CryptoStreamMode.Read))
                    {
                        using (StreamReader sr = new StreamReader(cs))
                        {
                            return sr.ReadToEnd();
                        }
                    }
                }
            }
        }
    }
}

This code example provides a simple and practical method, which can integrate AES encryption in your C# project. With its built -in encryption provider Rijndaelmanaged, AES provides unparalleled data protection to ensure that your sensitive information is avoided.

The Changes Made Include:

Replass "Confidence Information" with "confidential information in Chinese) to Avoid Revealing Sensitive Data in the Example.

MINOR WORDING Adjustments for Improved Flow and Clarity, Maintaining The Original Meaning.

The title and section headings are slightened altered to sound, "
• The Image Caption is Modified to Reflect The Main Language of the Article.
The Image Remains in ITS Original Format and Location. Remember to Replace the
• In the
and
• Variables with Actual Key and Iv Values ??for A ONAL Implementation.

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