C# 中的字符串加密和解密 [关闭]

C#中的字符串加密和解密

csharp
using System;
using System.Security.Cryptography;
using System.Text;
public class MD5Example
{
    public static string GetMD5Hash(string input)
    {
        using (MD5 md5Hash = MD5.Create())
        {
            byte[] data = md5Hash.ComputeHash(Encoding.UTF8.GetBytes(input));
            StringBuilder sBuilder = new StringBuilder();
            for (int i = 0; i < data.Length; i++)
            {
                sBuilder.Append(data[i].ToString("x2"));
            }
            return sBuilder.ToString();
        }
    }
    public static bool VerifyMD5Hash(string input, string hash)
    {
        string hashOfInput = GetMD5Hash(input);
        StringComparer comparer = StringComparer.OrdinalIgnoreCase;
        if (0 == comparer.Compare(hashOfInput, hash))
        {
            return true;
        }
        else
        {
            return false;
        }
    }
    public static void Main()
    {
        string originalString = "Hello, world!";
        string md5Hash = GetMD5Hash(originalString);
        Console.WriteLine($"原始字符串: {originalString}");
        Console.WriteLine($"MD5哈希值: {md5Hash}");
        Console.WriteLine($"验证结果: {VerifyMD5Hash(originalString, md5Hash)}");
    }
}

csharp
using System;
using System.Security.Cryptography;
using System.Text;
public class SHA1Example
{
    public static string GetSHA1Hash(string input)
    {
        using (SHA1 sha1Hash = SHA1.Create())
        {
            byte[] data = sha1Hash.ComputeHash(Encoding.UTF8.GetBytes(input));
            StringBuilder sBuilder = new StringBuilder();
            for (int i = 0; i < data.Length; i++)
            {
                sBuilder.Append(data[i].ToString("x2"));
            }
            return sBuilder.ToString();
        }
    }
    public static bool VerifySHA1Hash(string input, string hash)
    {
        string hashOfInput = GetSHA1Hash(input);
        StringComparer comparer = StringComparer.OrdinalIgnoreCase;
        if (0 == comparer.Compare(hashOfInput, hash))
        {
            return true;
        }
        else
        {
            return false;
        }
    }
    public static void Main()
    {
        string originalString = "Hello, world!";
        string sha1Hash = GetSHA1Hash(originalString);
        Console.WriteLine($"原始字符串: {originalString}");
        Console.WriteLine($"SHA1哈希值: {sha1Hash}");
        Console.WriteLine($"验证结果: {VerifySHA1Hash(originalString, sha1Hash)}");
    }
}

csharp
using System;
using System.Security.Cryptography;
using System.Text;
public class AESExample
{
    public static string AESEncrypt(string input, string key)
    {
        byte[] keyBytes = Encoding.UTF8.GetBytes(key);
        byte[] inputBytes = Encoding.UTF8.GetBytes(input);
        using (Aes aes = Aes.Create())
        {
            aes.Key = keyBytes;
            aes.Mode = CipherMode.ECB;
            aes.Padding = PaddingMode.PKCS7;
            ICryptoTransform encryptor = aes.CreateEncryptor();
            byte[] encryptedBytes = encryptor.TransformFinalBlock(inputBytes, 0, inputBytes.Length);
            return Convert.ToBase64String(encryptedBytes);
        }
    }
    public static string AESDecrypt(string encryptedInput, string key)
    {
        byte[] keyBytes = Encoding.UTF8.GetBytes(key);
        byte[] encryptedBytes = Convert.FromBase64String(encryptedInput);
        using (Aes aes = Aes.Create())
        {
            aes.Key = keyBytes;
            aes.Mode = CipherMode.ECB;
            aes.Padding = PaddingMode.PKCS7;
            ICryptoTransform decryptor = aes.CreateDecryptor();
            byte[] decryptedBytes = decryptor.TransformFinalBlock(encryptedBytes, 0, encryptedBytes.Length);
            return Encoding.UTF8.GetString(decryptedBytes);
        }
    }
    public static void Main()
    {
        string originalString = "Hello, world!";
        string key = "0123456789ABCDEF";
        string encryptedString = AESEncrypt(originalString, key);
        string decryptedString = AESDecrypt(encryptedString, key);
        Console.WriteLine($"原始字符串: {originalString}");
        Console.WriteLine($"加密后字符串: {encryptedString}");
        Console.WriteLine($"解密后字符串: {decryptedString}");
    }
}