Aes加密

代码如下

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

public class StringEncryptor
{
    private readonly byte[] key;
    private readonly byte[] iv;

    public StringEncryptor(string keyString, string ivString)
    {
        key = Encoding.UTF8.GetBytes(keyString);
        iv = Encoding.UTF8.GetBytes(ivString);
    }

    public string Encrypt(string plainText)
    {
        using var aes = Aes.Create();
        aes.Key = key;
        aes.IV = iv;

        var encryptor = aes.CreateEncryptor(aes.Key, aes.IV);

        using var memoryStream = new MemoryStream();
        using (var cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write))
        {
            using (var streamWriter = new StreamWriter(cryptoStream))
            {
                streamWriter.Write(plainText);
            }
        }

        return Convert.ToBase64String(memoryStream.ToArray());
    }

    public string Decrypt(string cipherText)
    {
        using var aes = Aes.Create();
        aes.Key = key;
        aes.IV = iv;

        var decryptor = aes.CreateDecryptor(aes.Key, aes.IV);

        using var memoryStream = new MemoryStream(Convert.FromBase64String(cipherText));
        using var cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read);
        using var streamReader = new StreamReader(cryptoStream);

        return streamReader.ReadToEnd();
    }
}

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class Program

{

    static void Main(string[] args)

    {

        string key = "ThisIsASuperSecretKey";

        string iv = "ThisIsASuperSecretIV";



        StringEncryptor encryptor = new StringEncryptor(key, iv);



        string originalString = "Hello, world!";

        Console.WriteLine("Original: " + originalString);



        string encryptedString = encryptor.Encrypt(originalString);

        Console.WriteLine("Encrypted: " + encryptedString);



        string decryptedString = encryptor.Decrypt(encryptedString);

        Console.WriteLine("Decrypted: " + decryptedString);

    }

}