加密和解密
Code
1
using System;2
using System.IO;3
using System.Windows.Forms;4
using System.Collections.Generic;5
using System.Text;6
using System.Security.Cryptography;7
namespace MyDes8


{9

/**//// <summary>10
/// DES加/解密与MD5加密11
/// </summary>12
public class My_Des13

{14

私有属性#region 私有属性15

/**//// <summary>16
/// MD5加密的字符串17
/// </summary>18
private string md5Str = null;19

/**//// <summary>20
/// DES加密的字符串21
/// </summary>22
private string encryptStr = null;23

/**//// <summary>24
/// DES解密的字符串25
/// </summary>26
private string decryptStr = null;27

/**//// <summary>28
/// DES密匙29
/// </summary>30
private string mydesKey = null;31

/**//// <summary>32
/// 返回的字符串33
/// </summary>34
private string mydesStr = null;35

/**//// <summary>36
/// 错误信息37
/// </summary>38
private string messAge = null;39
#endregion40

公共属性#region 公共属性41

/**//// <summary>42
/// MD5加密字符串43
/// </summary>44
public string MD5Str45

{46

get
{ return md5Str; }47

set
{ md5Str = value; }48
}49

/**//// <summary>50
/// DES加密的字符串51
/// </summary>52
public string EncryptStr53

{54

get
{ return encryptStr; }55

set
{ encryptStr = value; }56
}57

/**//// <summary>58
///DES 解密的字符串59
/// </summary>60
public string DecryptStr61

{62

get
{ return decryptStr; }63

set
{ decryptStr = value; }64
}65

/**//// <summary>66
/// DES密匙67
/// </summary>68
public string MyDesKey69

{70

get
{ return mydesKey; }71

set
{ mydesKey = value; }72
}73

/**//// <summary>74
/// 返回的字符串75
/// </summary>76
public string MyDesStr77

{78

get
{ return mydesStr; }79

set
{ mydesStr = value; }80
}81

/**//// <summary>82
/// 错误信息83
/// </summary>84
public string Message85

{86

get
{ return messAge; }87

set
{ messAge = value; }88
}89
#endregion90

公共方法#region 公共方法91

/**//// <summary>92
/// 执行DES加密93
/// </summary>94
public void DesEncrypt()95

{96
try97

{98
byte[] MyStr_E = Encoding.UTF8.GetBytes(this.encryptStr);99
byte[] MyKey_E = Encoding.UTF8.GetBytes(this.mydesKey);100
DESCryptoServiceProvider MyDes_E = new DESCryptoServiceProvider();101
MyDes_E.Key = MyKey_E;102
MyDes_E.IV = MyKey_E;103
MemoryStream MyMem_E = new MemoryStream();104
CryptoStream MyCry_E = new CryptoStream(MyMem_E, MyDes_E.CreateEncryptor(), CryptoStreamMode.Write);105
MyCry_E.Write(MyStr_E, 0, MyStr_E.Length);106
MyCry_E.FlushFinalBlock();107
MyCry_E.Close();108
this.mydesStr = Convert.ToBase64String(MyMem_E.ToArray());109
}110
catch (Exception Error)111

{112
this.messAge = "DES加密出错:"+Error.Message;113
}114
}115

/**//// <summary>116
/// 执行DES解密117
/// </summary>118
public void DesDecrypt()119

{120
try121

{122
byte[] MyStr_D = Convert.FromBase64String(this.decryptStr);123
byte[] MyKey_D = Encoding.UTF8.GetBytes(this.mydesKey);124
DESCryptoServiceProvider MyDes_D = new DESCryptoServiceProvider();125
MyDes_D.Key = MyKey_D;126
MyDes_D.IV = MyKey_D;127
MemoryStream MyMem_D = new MemoryStream();128
CryptoStream MyCry_D = new CryptoStream(MyMem_D, MyDes_D.CreateDecryptor(), CryptoStreamMode.Write); 129
MyCry_D.Write(MyStr_D, 0, MyStr_D.Length);130
MyCry_D.FlushFinalBlock();131
MyCry_D.Close();132
this.mydesStr = Encoding.UTF8.GetString(MyMem_D.ToArray());133
}134
catch (Exception Error)135

{136
this.messAge ="DES解密出错:" +Error.Message;137
}138
}139

/**//// <summary>140
/// 执行MD5加密141
/// </summary>142
public void MD5JiaMi()143

{144
MD5CryptoServiceProvider MyMD5 = new MD5CryptoServiceProvider();145
try146

{147
Byte[] MyMD5_Str = MyMD5.ComputeHash(Encoding.UTF8.GetBytes(this.md5Str));148
this.MyDesStr = Encoding.UTF8.GetString(MyMD5_Str);149
}150
catch (Exception Error)151

{152
this.messAge ="MD5加密出错:"+ Error.Message;153
}154
}155
#endregion156
}157
}
1
using System;2
using System.Collections.Generic;3
using System.Text;4
using System.IO;5
using System.Security.Cryptography;6
namespace ZZZ.Common7


{8

/**//// <summary>9
/// DES 加解密10
/// </summary>11
public class DES12

{13

/**//// <summary>14
/// DES加密15
/// </summary>16
/// <param name="input">待加密的字符串</param>17
/// <param name="key">加密密钥</param>18
/// <returns></returns>19
public static string Encrypt(string EncryptString, byte[] Key, byte[] IV)20

{21
byte[] inputByteArray = Encoding.UTF8.GetBytes(EncryptString);22
DESCryptoServiceProvider des = new DESCryptoServiceProvider();23
MemoryStream mStream = new MemoryStream();24
CryptoStream cStream = new CryptoStream(mStream, des.CreateEncryptor(Key, IV), CryptoStreamMode.Write);25
cStream.Write(inputByteArray, 0, inputByteArray.Length);26
cStream.FlushFinalBlock();27
return Convert.ToBase64String(mStream.ToArray());28
}29

/**//// <summary>30
/// DES解密31
/// </summary>32
/// <param name="input">待解密的字符串</param>33
/// <param name="key">解密密钥,要求为8位,和加密密钥相同</param>34
/// <returns>解密成功返回解密后的字符串,失败返源串</returns>35
public static string Decrypt(string DecryptString, byte[] Key, byte[] IV)36

{37
try38

{39
byte[] inputByteArray = Convert.FromBase64String(DecryptString);40
DESCryptoServiceProvider des = new DESCryptoServiceProvider();41
MemoryStream mStream = new MemoryStream();42
CryptoStream cStream = new CryptoStream(mStream, des.CreateDecryptor(Key, IV), CryptoStreamMode.Write);43
cStream.Write(inputByteArray, 0, inputByteArray.Length);44
cStream.FlushFinalBlock();45
return Encoding.UTF8.GetString(mStream.ToArray());46
}47
catch48

{49
return string.Empty;50
}51
}52
}53

/**//// <summary>54
/// RSA加解密算法55
/// </summary>56
public class RSA57

{58

/**//// <summary>59
/// RSA加密函数60
/// </summary>61
/// <param name="xmlPublicKey">说明KEY必须是XML的行式,返回的是字符串</param>62
/// <param name="EncryptString"></param>63
/// <returns></returns>64
public string Encrypt(string xmlPublicKey, string EncryptString)65

{66
byte[] PlainTextBArray;67
byte[] CypherTextBArray;68
string Result;69
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();70
rsa.FromXmlString(xmlPublicKey);71
PlainTextBArray = (new UnicodeEncoding()).GetBytes(EncryptString);72
CypherTextBArray = rsa.Encrypt(PlainTextBArray, false);73
Result = Convert.ToBase64String(CypherTextBArray);74
return Result;75
}76

/**//// <summary>77
/// RSA解密函数78
/// </summary>79
/// <param name="xmlPrivateKey"></param>80
/// <param name="DecryptString"></param>81
/// <returns></returns>82
public string Decrypt(string xmlPrivateKey, string DecryptString)83

{84
byte[] PlainTextBArray;85
byte[] DypherTextBArray;86
string Result;87
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();88
rsa.FromXmlString(xmlPrivateKey);89
PlainTextBArray = Convert.FromBase64String(DecryptString);90
DypherTextBArray = rsa.Decrypt(PlainTextBArray, false);91
Result = (new UnicodeEncoding()).GetString(DypherTextBArray);92
return Result;93
}94

/**//// <summary>95
/// 产生RSA的密钥96
/// </summary>97
/// <param name="xmlKeys">私钥</param>98
/// <param name="xmlPublicKey">公钥</param>99
public void RSAKey(out string xmlKeys, out string xmlPublicKey)100

{101
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();102
xmlKeys = rsa.ToXmlString(true);103
xmlPublicKey = rsa.ToXmlString(false);104
}105
}106
}107

108

109
MD5加密--(MD5解密技术好像才刚刚出现,代码是不会有的了)110

111
// 与asp兼容的md5编码函数。112
// 目前仅支持 Md5OLD=1 的情况,也就是不对输入的字串进行ansi编码。绝大部分asp程序都是用这种方式获得md5编码。113
// 输出的md5编码为16位。如需32位编码,请将最后的 WordToHex(b) + WordToHex(c) 修改为:114
// WordToHex(a) + WordToHex(b) + WordToHex(c) + WordToHex(d)115

116
using System;117
namespace MyFunc118


{119
public class MyMD5120

{121
private const int BITS_TO_A_BYTE = 8;122
private const int BYTES_TO_A_WORD = 4;123
private const int BITS_TO_A_WORD = 32;124
private int[] m_lOnBits;125
private int[] m_l2Power;126
private int GetASC(string SourceStr)127

{128
Byte[] BytesofString = System.Text.Encoding.Default.GetBytes(SourceStr.Substring(0,1));129
if (BytesofString.Length == 1)130

{131
return BytesofString[0];132
}133
else134

{135
int tmpNum = BytesofString[0] * 0x100 + BytesofString[1];136
if (tmpNum>0x8000) tmpNum -= 0x10000;137
return tmpNum;138
}139
}140
private int LShift(int lValue, int iShiftBits)141

{142
if (iShiftBits==0) return lValue;143
if (iShiftBits==31)144

{145
if (lValue % 2==1)146
return Convert.ToInt32(0x80000000-0x100000000);147
else148
return 0;149
}150
long tmpLShift;151
if ((lValue & m_l2Power[31 - iShiftBits])!=0)152

{153
tmpLShift = ((lValue & m_lOnBits[31 - (iShiftBits + 1)]) * m_l2Power[iShiftBits]) | Convert.ToInt32(0x80000000-0x100000000);154
}155
else156
tmpLShift=(lValue & m_lOnBits[31 - iShiftBits]) * m_l2Power[iShiftBits];157
tmpLShift %= 0x100000000;158
if (tmpLShift>=0x80000000) tmpLShift -= 0x100000000;159
return Convert.ToInt32(tmpLShift);160
}161
private int RShift(int lValue,int iShiftBits)162

{163
if (iShiftBits==0) return lValue;164
if (iShiftBits==31)165

{166
if ((lValue & 0x80000000)!=0)167
return 1;168
else169
return 0;170
}171
int tmpRShift = (lValue & 0x7FFFFFFE) / m_l2Power[iShiftBits];172
if ((lValue & 0x80000000)!=0)173

{174
tmpRShift |= (0x40000000 / m_l2Power[iShiftBits - 1]);175
}176
return tmpRShift;177
}178
private int RotateLeft(int lValue, int iShiftBits)179

{180
return (LShift(lValue, iShiftBits) | RShift(lValue, (32 - iShiftBits)));181
}182
private int AddUnsigned(int lX, int lY)183

{184
long lX4,lY4,lX8,lY8,lResult;185
lX8 = lX & 0x80000000;186
lY8 = lY & 0x80000000;187
lX4 = lX & 0x40000000;188
lY4 = lY & 0x40000000;189
lResult = (lX & 0x3FFFFFFF) + (lY & 0x3FFFFFFF);190
if ((lX4 & lY4)!=0)191

{192
lResult = lResult ^ 0x80000000 ^ lX8 ^ lY8;193
}194
else195

{196
if ((lX4 | lY4)!=0)197

{198
if ((lResult & 0x40000000)!=0)199
lResult = lResult ^ 0xC0000000 ^ lX8 ^ lY8;200
else201
lResult = lResult ^ 0x40000000 ^ lX8 ^ lY8;202
}203
else204

{205
lResult = lResult ^ lX8 ^ lY8;206
}207
}208
lResult %= 0x100000000;209
if (lResult>=0x80000000) lResult -= 0x100000000;210
return Convert.ToInt32(lResult);211
}212
private int md5_F(int x, int y, int z)213

{214
return (x & y) | ((x ^ -1) & z);215
}216
private int md5_G(int x, int y, int z)217

{218
return (x & z) | (y & (z ^ -1));219
}220
private int md5_H(int x, int y, int z)221

{222
return (x ^ y ^ z);223
}224
private int md5_I(int x, int y, int z)225

{226
return (y ^ (x | (z ^ -1)));227
}228
private void md5_FF(ref int a, int b, int c, int d, int x, int s, int ac)229

{230
a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_F(b, c, d), x), ac));231
a = RotateLeft(a, s);232
a = AddUnsigned(a, b);233
}234
private void md5_GG(ref int a, int b, int c, int d, int x, int s, int ac)235

{236
a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_G(b, c, d), x), ac));237
a = RotateLeft(a, s);238
a = AddUnsigned(a, b);239
}240
private void md5_HH(ref int a, int b, int c, int d, int x, int s, int ac)241

{242
a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_H(b, c, d), x), ac));243
a = RotateLeft(a, s);244
a = AddUnsigned(a, b);245
}246
private void md5_II(ref int a, int b, int c, int d, int x, int s, int ac)247

{248
a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_I(b, c, d), x), ac));249
a = RotateLeft(a, s);250
a = AddUnsigned(a, b);251
}252
private int[] ConvertToWordArray(string sMessage)253

{254
int lMessageLength,lNumberOfWords,lBytePosition,lByteCount,lWordCount;255
const int MODULUS_BITS = 512;256
const int CONGRUENT_BITS = 448;257
lMessageLength = sMessage.Length;258
lNumberOfWords = (((lMessageLength + ((MODULUS_BITS - CONGRUENT_BITS) / BITS_TO_A_BYTE)) / (MODULUS_BITS / BITS_TO_A_BYTE)) + 1) * (MODULUS_BITS / BITS_TO_A_WORD);259
int[] lWordArray = new int [lNumberOfWords];260
lBytePosition = 0;261
lByteCount = 0;262
while (lByteCount < lMessageLength)263

{264
lWordCount = lByteCount / BYTES_TO_A_WORD;265
lBytePosition = (lByteCount % BYTES_TO_A_WORD) * BITS_TO_A_BYTE;266
lWordArray[lWordCount] |= LShift(GetASC(sMessage.Substring(lByteCount, 1)), lBytePosition);267
lByteCount++;268
}269
lWordCount = lByteCount / BYTES_TO_A_WORD;270
lBytePosition = (lByteCount % BYTES_TO_A_WORD) * BITS_TO_A_BYTE;271
lWordArray[lWordCount] |= LShift(0x80, lBytePosition);272
lWordArray[lNumberOfWords - 2] = LShift(lMessageLength, 3);273
lWordArray[lNumberOfWords - 1] = RShift(lMessageLength, 29);274
return lWordArray;275
}276
private string WordToHex(int lValue)277

{278
string WordToHextmp,tmpStr;279
WordToHextmp = "";280
int lByte;281
for (int lCount = 0; lCount<=3; lCount++)282

{283
lByte = RShift(lValue, lCount * BITS_TO_A_BYTE) & m_lOnBits[BITS_TO_A_BYTE - 1];284
tmpStr = "0" + Convert.ToString(lByte,16);285
WordToHextmp += tmpStr.Substring(tmpStr.Length-2, 2);286
}287
return WordToHextmp;288
}289
public string MD5(string sMessage)290

{291

m_lOnBits = new int[31]
{1,3,7,15,31,63,127,255,511,1023,2047,4095,8191,16383,32767,65535,131071,262143,524287,1048575,2097151,4194303,8388607,16777215,33554431,67108863,134217727,268435455,536870911,1073741823,2147483647};292

m_l2Power = new int[31]
{1,2,4,8,16,32,64,128,256,512,1024,2048,4096,8192,16384,32768,65536,131072,262144,524288,1048576,2097152,4194304,8388608,16777216,33554432,67108864,134217728,268435456,536870912,1073741824};293
const int S11 = 7;294
const int S12 = 12;295
const int S13 = 17;296
const int S14 = 22;297
const int S21 = 5;298
const int S22 = 9;299
const int S23 = 14;300
const int S24 = 20;301
const int S31 = 4;302
const int S32 = 11;303
const int S33 = 16;304
const int S34 = 23;305
const int S41 = 6;306
const int S42 = 10;307
const int S43 = 15;308
const int S44 = 21;309
int k,AA,BB,CC,DD,a,b,c,d;310
int[] x = ConvertToWordArray(sMessage);311
a = 0x67452301;312
b = Convert.ToInt32(0xEFCDAB89-0x100000000);313
c = Convert.ToInt32(0x98BADCFE-0x100000000);314
d = 0x10325476;315
for (k = 0; k < x.Length; k += 16)316

{317
AA = a;318
BB = b;319
CC = c;320
DD = d;321
md5_FF(ref a, b, c, d, x[k + 0], S11, Convert.ToInt32(0xD76AA478-0x100000000));322
md5_FF(ref d, a, b, c, x[k + 1], S12, Convert.ToInt32(0xE8C7B756-0x100000000));323
md5_FF(ref c, d, a, b, x[k + 2], S13, 0x242070DB);324
md5_FF(ref b, c, d, a, x[k + 3], S14, Convert.ToInt32(0xC1BDCEEE-0x100000000));325
md5_FF(ref a, b, c, d, x[k + 4], S11, Convert.ToInt32(0xF57C0FAF-0x100000000));326
md5_FF(ref d, a, b, c, x[k + 5], S12, 0x4787C62A);327
md5_FF(ref c, d, a, b, x[k + 6], S13, Convert.ToInt32(0xA8304613-0x100000000));328
md5_FF(ref b, c, d, a, x[k + 7], S14, Convert.ToInt32(0xFD469501-0x100000000));329
md5_FF(ref a, b, c, d, x[k + 8], S11, 0x698098D8);330
md5_FF(ref d, a, b, c, x[k + 9], S12, Convert.ToInt32(0x8B44F7AF-0x100000000));331
md5_FF(ref c, d, a, b, x[k + 10], S13, Convert.ToInt32(0xFFFF5BB1-0x100000000));332
md5_FF(ref b, c, d, a, x[k + 11], S14, Convert.ToInt32(0x895CD7BE-0x100000000));333
md5_FF(ref a, b, c, d, x[k + 12], S11, 0x6B901122);334
md5_FF(ref d, a, b, c, x[k + 13], S12, Convert.ToInt32(0xFD987193-0x100000000));335
md5_FF(ref c, d, a, b, x[k + 14], S13, Convert.ToInt32(0xA679438E-0x100000000));336
md5_FF(ref b, c, d, a, x[k + 15], S14, 0x49B40821);337
md5_GG(ref a, b, c, d, x[k + 1], S21, Convert.ToInt32(0xF61E2562-0x100000000));338
md5_GG(ref d, a, b, c, x[k + 6], S22, Convert.ToInt32(0xC040B340-0x100000000));339
md5_GG(ref c, d, a, b, x[k + 11], S23, 0x265E5A51);340
md5_GG(ref b, c, d, a, x[k + 0], S24, Convert.ToInt32(0xE9B6C7AA-0x100000000));341
md5_GG(ref a, b, c, d, x[k + 5], S21, Convert.ToInt32(0xD62F105D-0x100000000));342
md5_GG(ref d, a, b, c, x[k + 10], S22, 0x2441453);343
md5_GG(ref c, d, a, b, x[k + 15], S23, Convert.ToInt32(0xD8A1E681-0x100000000));344
md5_GG(ref b, c, d, a, x[k + 4], S24, Convert.ToInt32(0xE7D3FBC8-0x100000000));345
md5_GG(ref a, b, c, d, x[k + 9], S21, 0x21E1CDE6);346
md5_GG(ref d, a, b, c, x[k + 14], S22, Convert.ToInt32(0xC33707D6-0x100000000));347
md5_GG(ref c, d, a, b, x[k + 3], S23, Convert.ToInt32(0xF4D50D87-0x100000000));348
md5_GG(ref b, c, d, a, x[k + 8], S24, 0x455A14ED);349
md5_GG(ref a, b, c, d, x[k + 13], S21, Convert.ToInt32(0xA9E3E905-0x100000000));350
md5_GG(ref d, a, b, c, x[k + 2], S22, Convert.ToInt32(0xFCEFA3F8-0x100000000));351
md5_GG(ref c, d, a, b, x[k + 7], S23, 0x676F02D9);352
md5_GG(ref b, c, d, a, x[k + 12], S24, Convert.ToInt32(0x8D2A4C8A-0x100000000));353
md5_HH(ref a, b, c, d, x[k + 5], S31, Convert.ToInt32(0xFFFA3942-0x100000000));354
md5_HH(ref d, a, b, c, x[k + 8], S32, Convert.ToInt32(0x8771F681-0x100000000));355
md5_HH(ref c, d, a, b, x[k + 11], S33, 0x6D9D6122);356
md5_HH(ref b, c, d, a, x[k + 14], S34, Convert.ToInt32(0xFDE5380C-0x100000000));357
md5_HH(ref a, b, c, d, x[k + 1], S31, Convert.ToInt32(0xA4BEEA44-0x100000000));358
md5_HH(ref d, a, b, c, x[k + 4], S32, 0x4BDECFA9);359
md5_HH(ref c, d, a, b, x[k + 7], S33, Convert.ToInt32(0xF6BB4B60-0x100000000));360
md5_HH(ref b, c, d, a, x[k + 10], S34, Convert.ToInt32(0xBEBFBC70-0x100000000));361
md5_HH(ref a, b, c, d, x[k + 13], S31, 0x289B7EC6);362
md5_HH(ref d, a, b, c, x[k + 0], S32, Convert.ToInt32(0xEAA127FA-0x100000000));363
md5_HH(ref c, d, a, b, x[k + 3], S33, Convert.ToInt32(0xD4EF3085-0x100000000));364
md5_HH(ref b, c, d, a, x[k + 6], S34, 0x4881D05);365
md5_HH(ref a, b, c, d, x[k + 9], S31, Convert.ToInt32(0xD9D4D039-0x100000000));366
md5_HH(ref d, a, b, c, x[k + 12], S32, Convert.ToInt32(0xE6DB99E5-0x100000000));367
md5_HH(ref c, d, a, b, x[k + 15], S33, 0x1FA27CF8);368
md5_HH(ref b, c, d, a, x[k + 2], S34, Convert.ToInt32(0xC4AC5665-0x100000000));369
md5_II(ref a, b, c, d, x[k + 0], S41, Convert.ToInt32(0xF4292244-0x100000000));370
md5_II(ref d, a, b, c, x[k + 7], S42, 0x432AFF97);371
md5_II(ref c, d, a, b, x[k + 14], S43, Convert.ToInt32(0xAB9423A7-0x100000000));372
md5_II(ref b, c, d, a, x[k + 5], S44, Convert.ToInt32(0xFC93A039-0x100000000));373
md5_II(ref a, b, c, d, x[k + 12], S41, 0x655B59C3);374
md5_II(ref d, a, b, c, x[k + 3], S42, Convert.ToInt32(0x8F0CCC92-0x100000000));375
md5_II(ref c, d, a, b, x[k + 10], S43, Convert.ToInt32(0xFFEFF47D-0x100000000));376
md5_II(ref b, c, d, a, x[k + 1], S44, Convert.ToInt32(0x85845DD1-0x100000000));377
md5_II(ref a, b, c, d, x[k + 8], S41, 0x6FA87E4F);378
md5_II(ref d, a, b, c, x[k + 15], S42, Convert.ToInt32(0xFE2CE6E0-0x100000000));379
md5_II(ref c, d, a, b, x[k + 6], S43, Convert.ToInt32(0xA3014314-0x100000000));380
md5_II(ref b, c, d, a, x[k + 13], S44, 0x4E0811A1);381
md5_II(ref a, b, c, d, x[k + 4], S41, Convert.ToInt32(0xF7537E82-0x100000000));382
md5_II(ref d, a, b, c, x[k + 11], S42, Convert.ToInt32(0xBD3AF235-0x100000000));383
md5_II(ref c, d, a, b, x[k + 2], S43, 0x2AD7D2BB);384
md5_II(ref b, c, d, a, x[k + 9], S44, Convert.ToInt32(0xEB86D391-0x100000000));385
a = AddUnsigned(a, AA);386
b = AddUnsigned(b, BB);387
c = AddUnsigned(c, CC);388
d = AddUnsigned(d, DD);389
}390
return WordToHex(a) + WordToHex(b) + WordToHex(c) + WordToHex(d).ToLower();391
}392

/**//// <summary>393
/// 十六位加密394
/// </summary>395
/// <param name="str"></param>396
/// <param name="size"></param>397
/// <returns></returns>398
public string MD5(string str,int size)399

{400
string s = MD5(str);401
if (size == 32)402

{403
return s;404
}405
return s.Substring(8, 16);406
}407
}408
}

浙公网安备 33010602011771号