急：关于 DES 加密解密的问题。

Question

public string Decrypt(string pToDecrypt, string sKey)
{
DESCryptoServiceProvider provider1 = new DESCryptoServiceProvider();
byte[] buffer1 = new byte[pToDecrypt.Length / 2];
for (int num1 = 0; num1 < (pToDecrypt.Length / 2); num1++)
{
int num2 = Convert.ToInt32(pToDecrypt.Substring(num1 * 2, 2), 0x10);
buffer1[num1] = (byte) num2;
}
provider1.Key = Encoding.ASCII.GetBytes(sKey);
provider1.IV = Encoding.ASCII.GetBytes(sKey);
MemoryStream stream1 = new MemoryStream();
CryptoStream stream2 = new CryptoStream(stream1, provider1.CreateDecryptor(), CryptoStreamMode.Write);
stream2.Write(buffer1, 0, buffer1.Length);
stream2.FlushFinalBlock();
StringBuilder builder1 = new StringBuilder();
return Encoding.Default.GetString(stream1.ToArray());
}
==============================================
以上是解密的方法。
调用是这样的：this.Decrypt("48FC50F3F5EB1A4B9CF9FA16765A4812", "2%b<5X7*");
"48FC50F3F5EB1A4B9CF9FA16765A4812" 是"127.0.0.1"加密后的字符
"2%b<5X7*" 是KEY我想问的是这个："48FC50F3F5EB1A4B9CF9FA16765A4812"
是通过加密过来的。他的长度是32位。我不知道是怎么加密过来的！
谁能告诉我怎么样才能达到这样的效果？我自己写了一个加密
public string Encryptor(string pToEncryptor, string sKey)
{
DESCryptoServiceProvider provider1 = new DESCryptoServiceProvider(); byte[] buffer1 = ASCIIEncoding.Default.GetBytes(pToEncryptor); provider1.Key = Encoding.ASCII.GetBytes(sKey);
provider1.IV = Encoding.ASCII.GetBytes(sKey);
MemoryStream stream1 = new MemoryStream();
CryptoStream stream2 = new CryptoStream(stream1, provider1.CreateEncryptor(), CryptoStreamMode.Write);
stream2.Write(buffer1, 0, buffer1.Length);
stream2.FlushFinalBlock();
StringBuilder builder1 = new StringBuilder();
return Encoding.Default.GetString(stream1.ToArray());
}但是出来的String 是一堆不知道是什么的String

Answer 1

把stream1.ToArray()的每个字节转换成16进制数字,再连起来

Answer 2

现在写这样 好象还是不行
public string Encryptor(string pToEncryptor, string sKey)
{
DESCryptoServiceProvider provider1 = new DESCryptoServiceProvider(); byte[] buffer1 = ASCIIEncoding.Default.GetBytes(pToEncryptor); provider1.Key = Encoding.ASCII.GetBytes(sKey);
provider1.IV = Encoding.ASCII.GetBytes(sKey);
MemoryStream stream1 = new MemoryStream();
CryptoStream stream2 = new CryptoStream(stream1, provider1.CreateEncryptor(), CryptoStreamMode.Write);
stream2.Write(buffer1, 0, buffer1.Length);
stream2.FlushFinalBlock();
StringBuilder builder1 = new StringBuilder();
string n = null;
for(int i=0;i<stream1.ToArray().Length;i++)
{
n += Convert.ToInt32((stream1.ToArray())[i]).ToString();
}

return n;
}

Answer 3

哪个高手能把我写个个加密的方法
把
string=127.0.0.1
key="2%b<5X7*"
加密后变成"48FC50F3F5EB1A4B9CF9FA16765A4812"

Answer 4

//byte[] Data = Encoding.ASCII.GetBytes("IrisSkin is good !!!");
                
//sha1 crypto service, digital signatures are created from the hash
                //string datastr = Convert.ToBase64String(Data); // DSA-SHA1 算法
                if (!SkinEngine.DSA.VerifyData(SkinEngine.DSAHash, Convert.FromBase64String(base.Engine.SerialNumber)))byte[] SignedValue = Convert.FromBase64String("flcRzsRtDNr2XBiCoY7NrAC352AiFA/4YuLs4nDCyOHZX5xvWtgH/g==");
textBox1.Text = Convert.ToBase64String(SignedValue); this.Text = dsa.VerifyData(Data, SignedValue).ToString();

Answer 5

System.Security.Cryptography.DSACryptoServiceProvider dsa = new DSACryptoServiceProvider(); DSAParameters p = new DSAParameters();
p.Counter = 31;
p.X = Convert.FromBase64String("SXJpc1NraW4gaXMgZ29vZCAhISE=");
p.P = Convert.FromBase64String("v7aWx402hheC7WRlmLBlBE/DL3CI8b/Vmj/dCEQRMao1kVRmGL/fWhJGrnQUg4OU/cISGW1+DSu/iIhSKBZV4Q==");
p.Q = Convert.FromBase64String("qRjCfkW/dk6mL4iUSTb5dZTKx30=");
p.G = Convert.FromBase64String("aXWT+c/HfeIDCPzilyuoMXd1tHV3n1uiBa35dDRZqZ25o9PmMtaeHIBZAGPik5/qhDGf+sGm76QAGs5PzmM3dA==");
p.Seed = Convert.FromBase64String("Z7UfhiqEbRBHn4yq4GYjuX/XMFI=");

dsa.ImportParameters(p);

Answer 6

string text1 = "abcdefghigklmnopqrstuvwxyzABCDEFGHIGKLMNOPQRSTUVWXYZ0123456789`~!@#$%^&*()_+|-=[]{};':<>?,./";
                        string text2 = text1.Substring(0x36, 1) + text1.Substring(0x44, 1) + text1.Substring(1, 1) + text1.Substring(0x56, 1) + text1.Substring(0x39, 1) + text1.Substring(0x31, 1) + text1.Substring(0x3b, 1) + text1.Substring(0x47, 1);
                        string text3 = _Default.Decrypt(SifuData.UserDn(), text2);
                        string text4 = _Default.Decrypt("48FC50F3F5EB1A4B9CF9FA16765A4812", text2);
                        string text5 = _Default.Decrypt("24D673EB0598C4C8CD7A07F2B31E321B", text2);
                        string text6 = base.Request.Url.AbsoluteUri.ToLower();这个里面也有跟楼上写的有点类似。
"abcdefghigklmnopqrstuvwxyzABCDEFGHIGKLMNOPQRSTUVWXYZ0123456789`~!@#$%^&*()_+|-=[]{};':<>?,./"楼上你给我的这段代码我越看越糊涂。。
能不能帮忙把方法完整的写一下啊？

Answer 7

string text1 = "abcdefghigklmnopqrstuvwxyzABCDEFGHIGKLMNOPQRSTUVWXYZ0123456789`~!@#$%^&*()_+|-=[]{};':<>?,./";
                        string text2 = text1.Substring(0x36, 1) + text1.Substring(0x44, 1) + text1.Substring(1, 1) + text1.Substring(0x56, 1) + text1.Substring(0x39, 1) + text1.Substring(0x31, 1) + text1.Substring(0x3b, 1) + text1.Substring(0x47, 1);
                        string text3 = _Default.Decrypt(SifuData.UserDn(), text2);
                        string text4 = _Default.Decrypt("48FC50F3F5EB1A4B9CF9FA16765A4812", text2);
                        string text5 = _Default.Decrypt("24D673EB0598C4C8CD7A07F2B31E321B", text2);
                        string text6 = base.Request.Url.AbsoluteUri.ToLower();这个里面也有跟楼上写的有点类似。
"abcdefghigklmnopqrstuvwxyzABCDEFGHIGKLMNOPQRSTUVWXYZ0123456789`~!@#$%^&*()_+|-=[]{};':<>?,./"楼上你给我的这段代码我越看越糊涂。。
能不能帮忙把方法完整的写一下啊？

Answer 8

string text1 = "abcdefghigklmnopqrstuvwxyzABCDEFGHIGKLMNOPQRSTUVWXYZ0123456789`~!@#$%^&*()_+|-=[]{};':<>?,./";
                        string text2 = text1.Substring(0x36, 1) + text1.Substring(0x44, 1) + text1.Substring(1, 1) + text1.Substring(0x56, 1) + text1.Substring(0x39, 1) + text1.Substring(0x31, 1) + text1.Substring(0x3b, 1) + text1.Substring(0x47, 1);
                        string text3 = _Default.Decrypt(SifuData.UserDn(), text2);
                        string text4 = _Default.Decrypt("48FC50F3F5EB1A4B9CF9FA16765A4812", text2);
                        string text5 = _Default.Decrypt("24D673EB0598C4C8CD7A07F2B31E321B", text2);
                        string text6 = base.Request.Url.AbsoluteUri.ToLower();这个里面也有跟楼上写的有点类似。
"abcdefghigklmnopqrstuvwxyzABCDEFGHIGKLMNOPQRSTUVWXYZ0123456789`~!@#$%^&*()_+|-=[]{};':<>?,./"

Answer 9

你的思路是对的，但需要稍微改动一下 public static string Encryptor(string pToEncryptor, string sKey)
{
 DESCryptoServiceProvider provider1 = new DESCryptoServiceProvider();  byte[] buffer1 = ASCIIEncoding.Default.GetBytes(pToEncryptor);  provider1.Key = Encoding.ASCII.GetBytes(sKey);
 provider1.IV = Encoding.ASCII.GetBytes(sKey);
 MemoryStream stream1 = new MemoryStream();
 CryptoStream stream2 = new CryptoStream(stream1, provider1.CreateEncryptor(), CryptoStreamMode.Write);
 stream2.Write(buffer1, 0, buffer1.Length);
 stream2.FlushFinalBlock();
 StringBuilder builder1 = new StringBuilder();
byte[] buffer2 =stream1.ToArray();
for(int i=0;i<buffer2.Length;i++)
{
builder1.Append(buffer2[i].ToString("X"));
}
 return builder1.ToString();
}

Answer 10

楼上的代码现改一个地方,
builder1.Append(buffer2[i].ToString("X"));
改为
builder1.Append(buffer2[i].ToString("X2"));测试实现楼主的要求

Answer 11

数据加密类库和实例下载 
 
说明：数据加密类库和实例，可以对字符串，流，文件进行tripledes加密，也可以生成md5密文
开发语言：C#
开放工具版本:vs2005
主要知识点:tripledes加密相关方法的掌握
开发者:codestudy 
联系方式:www.codestudy.cn 
下载地址：
http://www.codestudy.cn/showtopic-4.aspx