des加密解密，求助!!!
加密后，再解密，得到的结果，跟加密前的不一样，请大家帮忙看是错在哪里？？？
public partial class Form1 : Form { public Form1() { InitializeComponent(); } //初始置换表IP int[] IP_Table = new int[64]{ 57,49,41,33,25,17,9,1, 59,51,43,35,27,19,11,3, 61,53,45,37,29,21,13,5, 63,55,47,39,31,23,15,7, 56,48,40,32,24,16,8,0, 58,50,42,34,26,18,10,2, 60,52,44,36,28,20,12,4, 62,54,46,38,30,22,14,6}; //逆初始置换表IP^-1 int[] PI_Table =new int[64]{39,7,47,15,55,23,63,31, 38,6,46,14,54,22,62,30, 37,5,45,13,53,21,61,29, 36,4,44,12,52,20,60,28, 35,3,43,11,51,19,59,27, 34,2,42,10,50,18,58,26, 33,1,41,9,49,17,57,25, 32,0,40,8,48,16,56,24}; //扩充置换表E int[] E_Table = new int[48]{31,0,1,2,3,4, 3,4,5,6,7,8, 7,8,9,10,11,12, 11,12,13,14,15,16, 15,16,17,18,19,20, 19,20,21,22,23,24, 23,24,25,26,27,28, 27,28,29,30,31, 0}; //置换函数P int[] P_Table = new int[32]{15,6,19,20,28,11,27,16, 0,14,22,25,4,17,30,9, 1,7,23,13,31,26,2,8, 18,12,29,5,21,10,3,24}; //S盒 int[, ,] S = new int[8, 4, 16] {//S1 {{14,4,13,1,2,15,11,8,3,10,6,12,5,9,0,7}, {0,15,7,4,14,2,13,1,10,6,12,11,9,5,3,8}, {4,1,14,8,13,6,2,11,15,12,9,7,3,10,5,0}, {15,12,8,2,4,9,1,7,5,11,3,14,10,0,6,13}}, //S2 {{15,1,8,14,6,11,3,4,9,7,2,13,12,0,5,10}, {3,13,4,7,15,2,8,14,12,0,1,10,6,9,11,5}, {0,14,7,11,10,4,13,1,5,8,12,6,9,3,2,15}, {13,8,10,1,3,15,4,2,11,6,7,12,0,5,14,9}}, //S3 {{10,0,9,14,6,3,15,5,1,13,12,7,11,4,2,8}, {13,7,0,9,3,4,6,10,2,8,5,14,12,11,15,1}, {13,6,4,9,8,15,3,0,11,1,2,12,5,10,14,7}, {1,10,13,0,6,9,8,7,4,15,14,3,11,5,2,12}}, //S4 {{7,13,14,3,0,6,9,10,1,2,8,5,11,12,4,15}, {13,8,11,5,6,15,0,3,4,7,2,12,1,10,14,9}, {10,6,9,0,12,11,7,13,15,1,3,14,5,2,8,4}, {3,15,0,6,10,1,13,8,9,4,5,11,12,7,2,14}}, //S5 {{2,12,4,1,7,10,11,6,8,5,3,15,13,0,14,9}, {14,11,2,12,4,7,13,1,5,0,15,10,3,9,8,6}, {4,2,1,11,10,13,7,8,15,9,12,5,6,3,0,14}, {11,8,12,7,1,14,2,13,6,15,0,9,10,4,5,3}}, //S6 {{12,1,10,15,9,2,6,8,0,13,3,4,14,7,5,11}, {10,15,4,2,7,12,9,5,6,1,13,14,0,11,3,8}, {9,14,15,5,2,8,12,3,7,0,4,10,1,13,11,6}, {4,3,2,12,9,5,15,10,11,14,1,7,6,0,8,13}}, //S7 {{4,11,2,14,15,0,8,13,3,12,9,7,5,10,6,1}, {13,0,11,7,4,9,1,10,14,3,5,12,2,15,8,6}, {1,4,11,13,12,3,7,14,10,15,6,8,0,5,9,2}, {6,11,13,8,1,4,10,7,9,5,0,15,14,2,3,12}}, //S8 {{13,2,8,4,6,15,11,1,10,9,3,14,5,0,12,7}, {1,15,13,8,10,3,7,4,12,5,6,11,0,14,9,2}, {7,11,4,1,9,12,14,2,0,6,10,13,15,3,5,8}, {2,1,14,7,4,10,8,13,15,12,9,0,3,5,6,11}}}; //置换选择1 int[] PC1_Table = new int[56]{56,48,40,32,24,16,8, 0,57,49,41,33,25,17, 9,1,58,50,42,34,26, 18,10,2,59,51,43,35, 62,54,46,38,30,22,14, 6,61,53,45,37,29,21, 13,5,60,52,44,36,28, 20,12,4,27,19,11,3}; //置换选择2 int[] PC2_Table = new int[48]{13,16,10,23,0,4,2,27, 14,5,20,9,22,18,11,3, 25,7,15,6,26,19,12,1, 40,51,30,36,46,54,29,39, 50,44,32,46,43,48,38,55, 33,52,45,41,49,35,28,31}; //对左移次数的规定 int[] move_Table = new int[16] { 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 }; //产生子密钥函数 private int[,] miyao() { int tem; int[] zuoyi = new int[56]; int[] bit = new int[64]; int[] temp = new int[56]; int[] temp1 = new int[28]; int[] temp2 = new int[28]; int[,] zimiyao=new int[16,48]; int[] miyao = new int[8]; //读取字符串，转为字节 for (int i = 0; i < textBox1.Text.ToString().Trim().Length; i++) { miyao[i] = Convert.ToInt32(textBox1.Text.ToString().Substring(i, 1)); } //转为二进制 for (int i = 0; i < 8; i++) { for (int j = 0; j < 8; j++) { //bit[i * 8 + j] = (miyao[i] >> j) & 1; bit[i * 8 + j] = (miyao[i] >> j) & 0x01; } } //密钥置换PC1 for(int i = 0; i < 56; i++) { temp[i] = bit[PC1_Table[i]]; } //产生子密钥 for (int j = 0; j < 16; j++) { //分左、右组 for (int i = 0; i < 28; i++) { temp1[i] = temp[i]; temp2[i] = temp[i + 28]; } //左移 for (int k = 0; k < move_Table[j]; k++) { for (int i = 0; i < 27; i++) { tem = temp1[i]; temp1[i] = temp1[i + 1]; temp1[i + 1] = tem; tem = temp2[i]; temp2[i] = temp2[i + 1]; temp2[i + 1] = tem; } } //合并为一起 for (int i = 0; i < 28; i++) { temp[i] = temp1[i]; temp[i + 28] = temp2[i]; } //密钥置换PC2 for (int i = 0; i < 48; i++) { zimiyao[j,i] = temp[PC2_Table[i]]; } } return zimiyao; } //加密 private void button1_Click(object sender, EventArgs e) { char[,] zifuchuan = new char[100, 8]; zifuchuan = jiajiemi(textBox2.Text.ToString()); //输出到textBox3.Text foreach (char c in zifuchuan) { textBox3.Text += c.ToString(); } } //解密 private void button2_Click(object sender, EventArgs e) { textBox5.Text = string.Empty; textBox6.Text = string.Empty; char[,] zifuchuan = new char[100, 8]; zifuchuan = jiajiemi(textBox3.Text.ToString()); //输出到textBox3.Text foreach (char c in zifuchuan) { textBox4.Text += c.ToString(); } } }
//加密 public string DesEncrypt(string strText, string strEncrKey) { byte[] byKey=null; byte[] IV= {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF}; try { byKey = System.Text.Encoding.UTF8.GetBytes(strEncrKey.Substring(0,8)); DESCryptoServiceProvider des = new DESCryptoServiceProvider(); byte[] inputByteArray =System.Text.Encoding.UTF8.GetBytes(strText); MemoryStream ms = new MemoryStream(); CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey, IV), CryptoStreamMode.Write) ; cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); return Convert.ToBase64String(ms.ToArray()); } catch(System.Exception error) { MessageBox.Show(error.Message); return "error:" +error.Message+" "; } } //解密 public string DesDecrypt(string strText,string sDecrKey) { byte[] byKey = null; byte[] IV= {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF}; byte[] inputByteArray = new Byte[strText.Length]; try { byKey = System.Text.Encoding.UTF8.GetBytes(sDecrKey.Substring(0,8)); DESCryptoServiceProvider des = new DESCryptoServiceProvider(); inputByteArray = Convert.FromBase64String(strText); MemoryStream ms = new MemoryStream(); CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write); cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); System.Text.Encoding encoding = new System.Text.UTF8Encoding(); return encoding.GetString(ms.ToArray()); } catch(System.Exception error) { MessageBox.Show(error.Message); return "error:"+error.Message+" "; } }
[解决办法]
DES加密 解密 百度一下 立马知道。
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这个得要仔细看看
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啊哦 最好直接发你程序 大家研究下..光一段代码 木法分析这个的..
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不用这么复杂吧。。
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看了你代码，想法挺好。 先不做评论，
给你我的 仅作参考。
/// <summary>
/// 进行DES加密。
/// </summary>
/// <param name="pToEncrypt">要加密的字符串。</param>
/// <param name="sKey">密钥，且必须为8位。</param>
/// <returns>以Base64格式返回的加密字符串。</returns>
public string desEncrypt(string pToEncrypt, string sKey)
{
using (DESCryptoServiceProvider des = new DESCryptoServiceProvider())
{
byte[] inputByteArray = Encoding.UTF8.GetBytes(pToEncrypt);
des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
System.IO.MemoryStream ms = new System.IO.MemoryStream();
using (CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write))
{
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
cs.Close();
}
string str = Convert.ToBase64String(ms.ToArray());
ms.Close();
return str;
}
}
/**/
/// <summary>
/// 进行DES解密。
/// </summary>
/// <param name="pToDecrypt">要解密的以Base64</param>
/// <param name="sKey">密钥，且必须为8位。</param>
/// <returns>已解密的字符串。</returns>
public string Decrypt(string pToDecrypt, string sKey)
{
byte[] inputByteArray = Convert.FromBase64String(pToDecrypt);
using (DESCryptoServiceProvider des = new DESCryptoServiceProvider())
{
des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
System.IO.MemoryStream ms = new System.IO.MemoryStream();
using (CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write))
{
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
cs.Close();
}
string str = Encoding.UTF8.GetString(ms.ToArray());
ms.Close();
return str;
}
}
[解决办法]
这个我只知道MD5加密
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大家都贴代码，我也把我的贴上:
/// <summary>
/// 加密解密类
/// </summary>
public static class DencryptHelper
{
private static byte[] _Key = { 0x73, 0x75, 0x6e, 0x68, 0x65, 0x61, 0x72, 0x74 };
private static byte[] _IV = { 0x73, 0x75, 0x6e, 0x68, 0x65, 0x61, 0x72, 0x74 };
#region 加密字符串
/// <summary>
/// 加密字符串
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static string Encrypt(string input)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] inputByteArray = Encoding.Default.GetBytes(input);
des.Key = _Key;
des.IV = _IV;
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
StringBuilder result = new StringBuilder();
foreach (byte b in ms.ToArray())
{
result.AppendFormat("{0:X2}", b);
}
return result.ToString();
}
#endregion
#region 解密字符串
/// <summary>
/// 解密字符串
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static string Decrypt(string input)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
int len = input.Length / 2;
byte[] inputByteArray = new byte[len];
for (int i = 0; i < len; i++)
{
inputByteArray[i] = (byte)Convert.ToInt32(input.Substring(i * 2, 2), 16);
}
des.Key = _Key;
des.IV = _IV;
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
return Encoding.Default.GetString(ms.ToArray());
}
#endregion
#region 使用散列方式加密 MD5加密
/// <summary>
/// 使用MD5对字符串进行加密
/// </summary>
/// <param name="input">需要加密的字符串</param>
/// <returns>加密后的字符串</returns>
public static string MD5Encrypt(string input)
{
string result = string.Empty;
//先将要加密的字符串转换成byte数组
byte[] inputData = Encoding.Default.GetBytes(input);
//在通过MD5类加密，并得到加密后的byte[]类型
byte[] data = MD5.Create().ComputeHash(inputData);
StringBuilder strBuild = new StringBuilder();
for (int i = 0; i < data.Length; i++)
{
//将每个byte数据转换成16进制。"X":表示大写16进制；"X2"：表示大写16进制保留2位；"x"：表示小写16进制
strBuild.Append(data[i].ToString("X2"));
}
result = strBuild.ToString();
return result;
}
/// <summary>
/// 使用MD5对字符串进行加密
/// </summary>
/// <param name="input">需要加密的字符串</param>
/// <param name="offset">加密前缀字符串</param>
/// <returns>加密后的字符串</returns>
public static string MD5Encrypt(string input, string offset)
{
string result = string.Empty;
//先将要加密的字符串转换成byte数组
byte[] inputData = Encoding.Default.GetBytes(offset + input);
//在通过MD5类加密，并得到加密后的byte[]类型
byte[] data = MD5.Create().ComputeHash(inputData);
StringBuilder strBuild = new StringBuilder();
for (int i = 0; i < data.Length; i++)
{
//将每个byte数据转换成16进制。"X":表示大写16进制；"X2"：表示大写16进制保留2位；"x"：表示小写16进制
strBuild.Append(data[i].ToString("X2"));
}
result = strBuild.ToString();
return result;
}
#endregion
}