.Net Core DES加密解密

一、DES说明

1.加密的密钥必须是16位，因为是通过AES处理的Create，AES内置的位数为16位。

2.加密结果返回Base64字符格式

二、加密方法整理

//默认密钥向量 
private static byte[] Keys = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F };
/// <summary> 
/// DES加密字符串 
/// </summary> 
/// <param name="encryptString">待加密的字符串</param> 
/// <param name="encryptKey">加密密钥,要求为16位</param> 
/// <returns>加密成功返回加密后的字符串，失败返回源串</returns> 
public static string DESEncrypt(string encryptString, string encryptKey = "Key123Ace#321Key")
{
    try
    {
        byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 16));
        byte[] rgbIV = Keys;
        byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
        var DCSP = Aes.Create();
        MemoryStream mStream = new MemoryStream();
        CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
        cStream.Write(inputByteArray, 0, inputByteArray.Length);
        cStream.FlushFinalBlock();
        return Convert.ToBase64String(mStream.ToArray());
    }
    catch (Exception ex)
    {
        return ex.Message + encryptString;
    }

}
/// <summary> 
/// DES解密字符串 
/// </summary> 
/// <param name="decryptString">待解密的字符串</param> 
/// <param name="decryptKey">解密密钥,要求为16位,和加密密钥相同</param> 
/// <returns>解密成功返回解密后的字符串，失败返源串</returns> 
public static string DESDecrypt(string decryptString, string decryptKey = "Key123Ace#321Key")
{
    try
    {
        byte[] rgbKey = Encoding.UTF8.GetBytes(decryptKey.Substring(0, 16));
        byte[] rgbIV = Keys;
        byte[] inputByteArray = Convert.FromBase64String(decryptString);
        var DCSP = Aes.Create();
        MemoryStream mStream = new MemoryStream();
        CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
        Byte[] inputByteArrays = new byte[inputByteArray.Length];
        cStream.Write(inputByteArray, 0, inputByteArray.Length);
        cStream.FlushFinalBlock();
        return Encoding.UTF8.GetString(mStream.ToArray());
    }
    catch (Exception ex)
    {
        return ex.Message + decryptString;
    }

}

测试代码：

//DES 测试
string result1 = SecurityHelper.DESEncrypt("张三丰");
Console.WriteLine(result1); //Wmp7NDhI5S/U/H0qf0YWBw==

string result2 = SecurityHelper.DESDecrypt(result1);
Console.WriteLine(result2); //张三丰

更多：

.Net Core AES加密解密

.Net Core Base64加密解密

.Net Core Md5加密整理