C#工具:加密解密帮助类
using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
//加密字符串,注意strEncrKey的长度为8位(如果要增加或者减少key长度,调整IV的长度就是了)
//public string DesEncrypt(string strText, string strEncrKey) //解密字符串,注意strEncrKey的长度为8位(如果要增加或者减少key长度,调整IV的长度就是了)
//public string DesDecrypt(string strText,string sDecrKey) //加密数据文件,注意strEncrKey的长度为8位(如果要增加或者减少key长度,调整IV的长度就是了)
//public void DesEncrypt(string m_InFilePath,string m_OutFilePath,string strEncrKey) //解密数据文件,注意strEncrKey的长度为8位(如果要增加或者减少key长度,调整IV的长度就是了)
//public void DesDecrypt(string m_InFilePath,string m_OutFilePath,string sDecrKey) //MD5加密
//public string MD5Encrypt(string strText)
using Common; namespace Commons
{
/// <summary>
/// DES对称加解密、AES RijndaelManaged加解密、Base64加密解密、MD5加密等操作辅助类
/// </summary>
public sealed class EncodeHelper
{
#region DES对称加密解密
public const string DEFAULT_ENCRYPT_KEY = ""; /// <summary>
/// 使用默认加密
/// </summary>
/// <param name="strText"></param>
/// <returns></returns>
public static string DesEncrypt(string strText)
{
try
{
return DesEncrypt(strText, DEFAULT_ENCRYPT_KEY);
}
catch
{
return "";
}
} /// <summary>
/// 使用默认解密
/// </summary>
/// <param name="strText"></param>
/// <returns></returns>
public static string DesDecrypt(string strText)
{
try
{
return DesDecrypt(strText, DEFAULT_ENCRYPT_KEY);
}
catch
{
return "";
}
} /// <summary>
/// Encrypt the string
/// Attention:key must be 8 bits
/// </summary>
/// <param name="strText">string</param>
/// <param name="strEncrKey">key</param>
/// <returns></returns>
public static string DesEncrypt(string strText, string strEncrKey)
{
byte[] byKey = null;
byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; byKey = Encoding.UTF8.GetBytes(strEncrKey.Substring(, ));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] inputByteArray = Encoding.UTF8.GetBytes(strText);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey, IV), CryptoStreamMode.Write);
cs.Write(inputByteArray, , inputByteArray.Length);
cs.FlushFinalBlock();
return Convert.ToBase64String(ms.ToArray());
} /// <summary>
/// Decrypt string
/// Attention:key must be 8 bits
/// </summary>
/// <param name="strText">Decrypt string</param>
/// <param name="sDecrKey">key</param>
/// <returns>output string</returns>
public static 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]; byKey = Encoding.UTF8.GetBytes(sDecrKey.Substring(, ));
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, , inputByteArray.Length);
cs.FlushFinalBlock();
Encoding encoding = new UTF8Encoding();
return encoding.GetString(ms.ToArray());
} /// <summary>
/// Encrypt files
/// Attention:key must be 8 bits
/// </summary>
/// <param name="m_InFilePath">Encrypt file path</param>
/// <param name="m_OutFilePath">output file</param>
/// <param name="strEncrKey">key</param>
public static void DesEncrypt(string m_InFilePath, string m_OutFilePath, string strEncrKey)
{
byte[] byKey = null;
byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; byKey = Encoding.UTF8.GetBytes(strEncrKey.Substring(, ));
FileStream fin = new FileStream(m_InFilePath, FileMode.Open, FileAccess.Read);
FileStream fout = new FileStream(m_OutFilePath, FileMode.OpenOrCreate, FileAccess.Write);
fout.SetLength();
//Create variables to help with read and write.
byte[] bin = new byte[]; //This is intermediate storage for the encryption.
long rdlen = ; //This is the total number of bytes written.
long totlen = fin.Length; //This is the total length of the input file.
int len; //This is the number of bytes to be written at a time. DES des = new DESCryptoServiceProvider();
CryptoStream encStream = new CryptoStream(fout, des.CreateEncryptor(byKey, IV), CryptoStreamMode.Write); //Read from the input file, then encrypt and write to the output file.
while (rdlen < totlen)
{
len = fin.Read(bin, , );
encStream.Write(bin, , len);
rdlen = rdlen + len;
}
encStream.Close();
fout.Close();
fin.Close();
} /// <summary>
/// Decrypt files
/// Attention:key must be 8 bits
/// </summary>
/// <param name="m_InFilePath">Decrypt filepath</param>
/// <param name="m_OutFilePath">output filepath</param>
/// <param name="sDecrKey">key</param>
public static void DesDecrypt(string m_InFilePath, string m_OutFilePath, string sDecrKey)
{
byte[] byKey = null;
byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; byKey = Encoding.UTF8.GetBytes(sDecrKey.Substring(, ));
FileStream fin = new FileStream(m_InFilePath, FileMode.Open, FileAccess.Read);
FileStream fout = new FileStream(m_OutFilePath, FileMode.OpenOrCreate, FileAccess.Write);
fout.SetLength();
//Create variables to help with read and write.
byte[] bin = new byte[]; //This is intermediate storage for the encryption.
long rdlen = ; //This is the total number of bytes written.
long totlen = fin.Length; //This is the total length of the input file.
int len; //This is the number of bytes to be written at a time. DES des = new DESCryptoServiceProvider();
CryptoStream encStream = new CryptoStream(fout, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write); //Read from the input file, then encrypt and write to the output file.
while (rdlen < totlen)
{
len = fin.Read(bin, , );
encStream.Write(bin, , len);
rdlen = rdlen + len;
}
encStream.Close();
fout.Close();
fin.Close();
}
#endregion #region 对称加密算法AES RijndaelManaged加密解密
private static readonly string Default_AES_Key = "@#kim123";
private static byte[] Keys = { 0x41, 0x72, 0x65, 0x79, 0x6F, 0x75, 0x6D, 0x79,
0x53,0x6E, 0x6F, 0x77, 0x6D, 0x61, 0x6E, 0x3F }; /// <summary>
/// 对称加密算法AES RijndaelManaged加密(RijndaelManaged（AES）算法是块式加密算法)
/// </summary>
/// <param name="encryptString">待加密字符串</param>
/// <returns>加密结果字符串</returns>
public static string AES_Encrypt(string encryptString)
{
return AES_Encrypt(encryptString, Default_AES_Key);
} /// <summary>
/// 对称加密算法AES RijndaelManaged加密(RijndaelManaged（AES）算法是块式加密算法)
/// </summary>
/// <param name="encryptString">待加密字符串</param>
/// <param name="encryptKey">加密密钥，须半角字符</param>
/// <returns>加密结果字符串</returns>
public static string AES_Encrypt(string encryptString, string encryptKey)
{
encryptKey = GetSubString(encryptKey, , "");
encryptKey = encryptKey.PadRight(, ' '); RijndaelManaged rijndaelProvider = new RijndaelManaged();
rijndaelProvider.Key = Encoding.UTF8.GetBytes(encryptKey.Substring(, ));
rijndaelProvider.IV = Keys;
ICryptoTransform rijndaelEncrypt = rijndaelProvider.CreateEncryptor(); byte[] inputData = Encoding.UTF8.GetBytes(encryptString);
byte[] encryptedData = rijndaelEncrypt.TransformFinalBlock(inputData, , inputData.Length); return Convert.ToBase64String(encryptedData);
} /// <summary>
/// 对称加密算法AES RijndaelManaged解密字符串
/// </summary>
/// <param name="decryptString">待解密的字符串</param>
/// <returns>解密成功返回解密后的字符串,失败返源串</returns>
public static string AES_Decrypt(string decryptString)
{
return AES_Decrypt(decryptString, Default_AES_Key);
} /// <summary>
/// 对称加密算法AES RijndaelManaged解密字符串
/// </summary>
/// <param name="decryptString">待解密的字符串</param>
/// <param name="decryptKey">解密密钥,和加密密钥相同</param>
/// <returns>解密成功返回解密后的字符串,失败返回空</returns>
public static string AES_Decrypt(string decryptString, string decryptKey)
{
try
{
decryptKey = GetSubString(decryptKey, , "");
decryptKey = decryptKey.PadRight(, ' '); RijndaelManaged rijndaelProvider = new RijndaelManaged();
rijndaelProvider.Key = Encoding.UTF8.GetBytes(decryptKey);
rijndaelProvider.IV = Keys;
ICryptoTransform rijndaelDecrypt = rijndaelProvider.CreateDecryptor(); byte[] inputData = Convert.FromBase64String(decryptString);
byte[] decryptedData = rijndaelDecrypt.TransformFinalBlock(inputData, , inputData.Length); return Encoding.UTF8.GetString(decryptedData);
}
catch
{
return string.Empty;
}
} /// <summary>
/// 按字节长度(按字节,一个汉字为2个字节)取得某字符串的一部分
/// </summary>
/// <param name="sourceString">源字符串</param>
/// <param name="length">所取字符串字节长度</param>
/// <param name="tailString">附加字符串(当字符串不够长时，尾部所添加的字符串，一般为"...")</param>
/// <returns>某字符串的一部分</returns>
private static string GetSubString(string sourceString, int length, string tailString)
{
return GetSubString(sourceString, , length, tailString);
} /// <summary>
/// 按字节长度(按字节,一个汉字为2个字节)取得某字符串的一部分
/// </summary>
/// <param name="sourceString">源字符串</param>
/// <param name="startIndex">索引位置，以0开始</param>
/// <param name="length">所取字符串字节长度</param>
/// <param name="tailString">附加字符串(当字符串不够长时，尾部所添加的字符串，一般为"...")</param>
/// <returns>某字符串的一部分</returns>
private static string GetSubString(string sourceString, int startIndex, int length, string tailString)
{
string myResult = sourceString; //当是日文或韩文时(注:中文的范围:\u4e00 - \u9fa5, 日文在\u0800 - \u4e00, 韩文为\xAC00-\xD7A3)
if (System.Text.RegularExpressions.Regex.IsMatch(sourceString, "[\u0800-\u4e00]+") ||
System.Text.RegularExpressions.Regex.IsMatch(sourceString, "[\xAC00-\xD7A3]+"))
{
//当截取的起始位置超出字段串长度时
if (startIndex >= sourceString.Length)
{
return string.Empty;
}
else
{
return sourceString.Substring(startIndex,
((length + startIndex) > sourceString.Length) ? (sourceString.Length - startIndex) : length);
}
} //中文字符，如"中国人民abcd123"
if (length <= )
{
return string.Empty;
}
byte[] bytesSource = Encoding.Default.GetBytes(sourceString); //当字符串长度大于起始位置
if (bytesSource.Length > startIndex)
{
int endIndex = bytesSource.Length; //当要截取的长度在字符串的有效长度范围内
if (bytesSource.Length > (startIndex + length))
{
endIndex = length + startIndex;
}
else
{ //当不在有效范围内时,只取到字符串的结尾
length = bytesSource.Length - startIndex;
tailString = "";
} int[] anResultFlag = new int[length];
int nFlag = ;
//字节大于127为双字节字符
for (int i = startIndex; i < endIndex; i++)
{
if (bytesSource[i] > )
{
nFlag++;
if (nFlag == )
{
nFlag = ;
}
}
else
{
nFlag = ;
}
anResultFlag[i] = nFlag;
}
//最后一个字节为双字节字符的一半
if ((bytesSource[endIndex - ] > ) && (anResultFlag[length - ] == ))
{
length = length + ;
} byte[] bsResult = new byte[length];
Array.Copy(bytesSource, startIndex, bsResult, , length);
myResult = Encoding.Default.GetString(bsResult);
myResult = myResult + tailString; return myResult;
} return string.Empty; } /// <summary>
/// 加密文件流
/// </summary>
/// <param name="fs"></param>
/// <returns></returns>
public static CryptoStream AES_EncryptStrream(FileStream fs, string decryptKey)
{
decryptKey = GetSubString(decryptKey, , "");
decryptKey = decryptKey.PadRight(, ' '); RijndaelManaged rijndaelProvider = new RijndaelManaged();
rijndaelProvider.Key = Encoding.UTF8.GetBytes(decryptKey);
rijndaelProvider.IV = Keys; ICryptoTransform encrypto = rijndaelProvider.CreateEncryptor();
CryptoStream cytptostreamEncr = new CryptoStream(fs, encrypto, CryptoStreamMode.Write);
return cytptostreamEncr;
} /// <summary>
/// 解密文件流
/// </summary>
/// <param name="fs"></param>
/// <returns></returns>
public static CryptoStream AES_DecryptStream(FileStream fs, string decryptKey)
{
decryptKey = GetSubString(decryptKey, , "");
decryptKey = decryptKey.PadRight(, ' '); RijndaelManaged rijndaelProvider = new RijndaelManaged();
rijndaelProvider.Key = Encoding.UTF8.GetBytes(decryptKey);
rijndaelProvider.IV = Keys;
ICryptoTransform Decrypto = rijndaelProvider.CreateDecryptor();
CryptoStream cytptostreamDecr = new CryptoStream(fs, Decrypto, CryptoStreamMode.Read);
return cytptostreamDecr;
} /// <summary>
/// 对指定文件加密
/// </summary>
/// <param name="InputFile"></param>
/// <param name="OutputFile"></param>
/// <returns></returns>
public static bool AES_EncryptFile(string InputFile, string OutputFile)
{
try
{
string decryptKey = "www.iqidi.com"; FileStream fr = new FileStream(InputFile, FileMode.Open);
FileStream fren = new FileStream(OutputFile, FileMode.Create);
CryptoStream Enfr = AES_EncryptStrream(fren, decryptKey);
byte[] bytearrayinput = new byte[fr.Length];
fr.Read(bytearrayinput, , bytearrayinput.Length);
Enfr.Write(bytearrayinput, , bytearrayinput.Length);
Enfr.Close();
fr.Close();
fren.Close();
}
catch
{
//文件异常
return false;
}
return true;
} /// <summary>
/// 对指定的文件解压缩
/// </summary>
/// <param name="InputFile"></param>
/// <param name="OutputFile"></param>
/// <returns></returns>
public static bool AES_DecryptFile(string InputFile, string OutputFile)
{
try
{
string decryptKey = "www.iqidi.com";
FileStream fr = new FileStream(InputFile, FileMode.Open);
FileStream frde = new FileStream(OutputFile, FileMode.Create);
CryptoStream Defr = AES_DecryptStream(fr, decryptKey);
byte[] bytearrayoutput = new byte[];
int m_count = ; do
{
m_count = Defr.Read(bytearrayoutput, , bytearrayoutput.Length);
frde.Write(bytearrayoutput, , m_count);
if (m_count < bytearrayoutput.Length)
break;
} while (true); Defr.Close();
fr.Close();
frde.Close();
}
catch
{
//文件异常
return false;
}
return true;
} #endregion #region Base64加密解密
/// <summary>
/// Base64是一種使用64基的位置計數法。它使用2的最大次方來代表僅可列印的ASCII 字元。
/// 這使它可用來作為電子郵件的傳輸編碼。在Base64中的變數使用字元A-Z、a-z和0-9 ，
/// 這樣共有62個字元，用來作為開始的64個數字，最後兩個用來作為數字的符號在不同的
/// 系統中而不同。
/// Base64加密
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string Base64Encrypt(string str)
{
byte[] encbuff = System.Text.Encoding.UTF8.GetBytes(str);
return Convert.ToBase64String(encbuff);
} /// <summary>
/// Base64解密
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string Base64Decrypt(string str)
{
byte[] decbuff = Convert.FromBase64String(str);
return System.Text.Encoding.UTF8.GetString(decbuff);
}
#endregion #region MD5加密
/// <summary>
/// MD5 Encrypt
/// </summary>
/// <param name="strText">text</param>
/// <returns>md5 Encrypt string</returns>
public static string MD5Encrypt(string strText)
{
MD5 md5 = new MD5CryptoServiceProvider();
byte[] result = md5.ComputeHash(Encoding.Default.GetBytes(strText));
return Encoding.Default.GetString(result);
} public static string MD5EncryptHash(String input)
{
MD5 md5 = new MD5CryptoServiceProvider();
//the GetBytes method returns byte array equavalent of a string
byte[] res = md5.ComputeHash(Encoding.Default.GetBytes(input), , input.Length);
char[] temp = new char[res.Length];
//copy to a char array which can be passed to a String constructor
Array.Copy(res, temp, res.Length);
//return the result as a string
return new String(temp);
} public static string MD5EncryptHashHex(String input)
{
MD5 md5 = new MD5CryptoServiceProvider();
//the GetBytes method returns byte array equavalent of a string
byte[] res = md5.ComputeHash(Encoding.Default.GetBytes(input), , input.Length); String returnThis = string.Empty; for (int i = ; i < res.Length; i++)
{
returnThis += Uri.HexEscape((char)res[i]);
}
returnThis = returnThis.Replace("%", "");
returnThis = returnThis.ToLower(); return returnThis;
} /// <summary>
/// MD5 三次加密算法.计算过程: (QQ使用)
/// 1. 验证码转为大写
/// 2. 将密码使用这个方法进行三次加密后,与验证码进行叠加
/// 3. 然后将叠加后的内容再次MD5一下,得到最终验证码的值
/// </summary>
/// <param name="s"></param>
/// <returns></returns>
public static string EncyptMD5_3_16(string s)
{
MD5 md5 = MD5CryptoServiceProvider.Create();
byte[] bytes = System.Text.Encoding.ASCII.GetBytes(s);
byte[] bytes1 = md5.ComputeHash(bytes);
byte[] bytes2 = md5.ComputeHash(bytes1);
byte[] bytes3 = md5.ComputeHash(bytes2); StringBuilder sb = new StringBuilder();
foreach (var item in bytes3)
{
sb.Append(item.ToString("x").PadLeft(, ''));
}
return sb.ToString().ToUpper();
}
#endregion /// <summary>
/// SHA256函数
/// </summary>
/// <param name="str">原始字符串</param>
/// <returns>SHA256结果(返回长度为44字节的字符串)</returns>
public static string SHA256(string str)
{
byte[] SHA256Data = Encoding.UTF8.GetBytes(str);
SHA256Managed Sha256 = new SHA256Managed();
byte[] Result = Sha256.ComputeHash(SHA256Data);
return Convert.ToBase64String(Result); //返回长度为44字节的字符串
} /// <summary>
/// 加密字符串
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static string EncryptString(string input)
{
return MD5Util.AddMD5Profix(Base64Util.Encrypt(MD5Util.AddMD5Profix(input)));
//return Base64.Encrypt(MD5.AddMD5Profix(Base64.Encrypt(input)));
} /// <summary>
/// 解密加过密的字符串
/// </summary>
/// <param name="input"></param>
/// <param name="throwException">解密失败是否抛异常</param>
/// <returns></returns>
public static string DecryptString(string input, bool throwException)
{
string res = "";
try
{
res = input;// Base64.Decrypt(input);
if (MD5Util.ValidateValue(res))
{
return MD5Util.RemoveMD5Profix(Base64Util.Decrypt(MD5Util.RemoveMD5Profix(res)));
}
else
{
throw new Exception("字符串无法转换成功！");
}
}
catch
{
if (throwException)
{
throw;
}
else
{
return "";
}
}
}
}
}
AESEncode
using System;
using System.Collections.Generic;
using System.Text; namespace Common
{
/// <summary>
/// 基于Base64的加密编码，
/// 可以设置不同的密码表来获取不同的编码合解码
/// </summary>
public class Base64Util
{
public Base64Util()
{
this.InitDict();
} protected static Base64Util s_b64 = new Base64Util(); #region Base64加密解密
/// <summary>
/// Base64是一種使用64基的位置計數法。它使用2的最大次方來代表僅可列印的ASCII 字元。
/// 這使它可用來作為電子郵件的傳輸編碼。在Base64中的變數使用字元A-Z、a-z和0-9 ，
/// 這樣共有62個字元，用來作為開始的64個數字，最後兩個用來作為數字的符號在不同的
/// 系統中而不同。
/// Base64加密
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string Base64Encrypt(string str)
{
byte[] encbuff = System.Text.Encoding.UTF8.GetBytes(str);
return Convert.ToBase64String(encbuff);
} /// <summary>
/// Base64解密
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string Base64Decrypt(string str)
{
byte[] decbuff = Convert.FromBase64String(str);
return System.Text.Encoding.UTF8.GetString(decbuff);
}
#endregion /// <summary>
/// 使用默认的密码表加密字符串
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static string Encrypt(string input)
{
return s_b64.Encode(input);
}
/// <summary>
/// 使用默认的密码表解密字符串
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static string Decrypt(string input)
{
return s_b64.Decode(input);
} /// <summary>
/// 获取具有标准的Base64密码表的加密类
/// </summary>
/// <returns></returns>
public static Base64Util GetStandardBase64()
{
Base64Util b64 = new Base64Util();
b64.Pad = "=";
b64.CodeTable = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
return b64;
} protected string m_codeTable = @"ABCDEFGHIJKLMNOPQRSTUVWXYZbacdefghijklmnopqrstu_wxyz0123456789*-";
protected string m_pad = "v";
protected Dictionary<int, char> m_t1 = new Dictionary<int, char>();
protected Dictionary<char, int> m_t2 = new Dictionary<char, int>(); /// <summary>
/// 密码表
/// </summary>
public string CodeTable
{
get { return m_codeTable; }
set
{
if (value == null)
{
throw new Exception("密码表不能为null");
}
else if (value.Length < )
{
throw new Exception("密码表长度必须至少为64");
}
else
{
this.ValidateRepeat(value);
this.ValidateEqualPad(value, m_pad);
m_codeTable = value;
this.InitDict();
}
}
}
/// <summary>
/// 补码
/// </summary>
public string Pad
{
get { return m_pad; }
set
{
if (value == null)
{
throw new Exception("密码表的补码不能为null");
}
else if (value.Length != )
{
throw new Exception("密码表的补码长度必须为1");
}
else
{
this.ValidateEqualPad(m_codeTable, value);
m_pad = value;
this.InitDict();
}
}
} /// <summary>
/// 返回编码后的字符串
/// </summary>
/// <param name="source"></param>
/// <returns></returns>
public string Encode(string source)
{
if (source == null || source == "")
{
return "";
}
else
{
StringBuilder sb = new StringBuilder();
byte[] tmp = System.Text.UTF8Encoding.UTF8.GetBytes(source);
int remain = tmp.Length % ;
int patch = - remain;
if (remain != )
{
Array.Resize(ref tmp, tmp.Length + patch);
}
int cnt = (int)Math.Ceiling(tmp.Length * 1.0 / );
for (int i = ; i < cnt; i++)
{
sb.Append(this.EncodeUnit(tmp[i * ], tmp[i * + ], tmp[i * + ]));
}
if (remain != )
{
sb.Remove(sb.Length - patch, patch);
for (int i = ; i < patch; i++)
{
sb.Append(m_pad);
}
}
return sb.ToString();
} }
protected string EncodeUnit(params byte[] unit)
{
int[] obj = new int[];
obj[] = (unit[] & 0xfc) >> ;
obj[] = ((unit[] & 0x03) << ) + ((unit[] & 0xf0) >> );
obj[] = ((unit[] & 0x0f) << ) + ((unit[] & 0xc0) >> );
obj[] = unit[] & 0x3f;
StringBuilder sb = new StringBuilder();
for (int i = ; i < obj.Length; i++)
{
sb.Append(this.GetEC((int)obj[i]));
}
return sb.ToString();
}
protected char GetEC(int code)
{
return m_t1[code];//m_codeTable[code];
} /// <summary>
/// 获得解码字符串
/// </summary>
/// <param name="source"></param>
/// <returns></returns>
public string Decode(string source)
{
if (source == null || source == "")
{
return "";
}
else
{
List<byte> list = new List<byte>();
char[] tmp = source.ToCharArray();
int remain = tmp.Length % ;
if (remain != )
{
Array.Resize(ref tmp, tmp.Length - remain);
}
int patch = source.IndexOf(m_pad);
if (patch != -)
{
patch = source.Length - patch;
}
int cnt = tmp.Length / ;
for (int i = ; i < cnt; i++)
{
this.DecodeUnit(list, tmp[i * ], tmp[i * + ], tmp[i * + ], tmp[i * + ]);
}
for (int i = ; i < patch; i++)
{
list.RemoveAt(list.Count - );
}
return System.Text.Encoding.UTF8.GetString(list.ToArray());
}
}
protected void DecodeUnit(List<byte> byteArr, params char[] chArray)
{
int[] res = new int[];
byte[] unit = new byte[chArray.Length];
for (int i = ; i < chArray.Length; i++)
{
unit[i] = this.FindChar(chArray[i]);
}
res[] = (unit[] << ) + ((unit[] & 0x30) >> );
res[] = ((unit[] & 0xf) << ) + ((unit[] & 0x3c) >> );
res[] = ((unit[] & 0x3) << ) + unit[];
for (int i = ; i < res.Length; i++)
{
byteArr.Add((byte)res[i]);
}
}
protected byte FindChar(char ch)
{
int pos = m_t2[ch];//m_codeTable.IndexOf(ch);
return (byte)pos;
} /// <summary>
/// 初始化双向哈西字典
/// </summary>
protected void InitDict()
{
m_t1.Clear();
m_t2.Clear();
m_t2.Add(m_pad[], -);
for (int i = ; i < m_codeTable.Length; i++)
{
m_t1.Add(i, m_codeTable[i]);
m_t2.Add(m_codeTable[i], i);
}
}
/// <summary>
/// 检查字符串中的字符是否有重复
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
protected void ValidateRepeat(string input)
{
for (int i = ; i < input.Length; i++)
{
if (input.LastIndexOf(input[i]) > i)
{
throw new Exception("密码表中含有重复字符：" + input[i]);
}
}
}
/// <summary>
/// 检查字符串是否包含补码字符
/// </summary>
/// <param name="input"></param>
/// <param name="pad"></param>
protected void ValidateEqualPad(string input, string pad)
{
if (input.IndexOf(pad) > -)
{
throw new Exception("密码表中包含了补码字符：" + pad);
}
} protected void Test()
{ //m_codeTable = @"STUVWXYZbacdefghivklABCDEFGHIJKLMNOPQRmnopqrstu!wxyz0123456789+/";
//m_pad = "j"; this.InitDict(); string test = "abc ABC 你好！◎＃￥％……!@#$%^";
string encode = this.Encode("false");
string decode = this.Decode(encode);
Console.WriteLine(encode);
Console.WriteLine(test == decode);
}
}
}
Base64Util
using System;
using System.Security.Cryptography;
using System.Text;
namespace Maticsoft.Common.DEncrypt
{
/// <summary>
/// Encrypt 的摘要说明。
/// LiTianPing
/// </summary>
public class DEncrypt
{
/// <summary>
/// 构造方法
/// </summary>
public DEncrypt()
{
} #region 使用 缺省密钥字符串 加密/解密string /// <summary>
/// 使用缺省密钥字符串加密string
/// </summary>
/// <param name="original">明文</param>
/// <returns>密文</returns>
public static string Encrypt(string original)
{
return Encrypt(original,"MATICSOFT");
}
/// <summary>
/// 使用缺省密钥字符串解密string
/// </summary>
/// <param name="original">密文</param>
/// <returns>明文</returns>
public static string Decrypt(string original)
{
return Decrypt(original,"MATICSOFT",System.Text.Encoding.Default);
} #endregion #region 使用 给定密钥字符串 加密/解密string
/// <summary>
/// 使用给定密钥字符串加密string
/// </summary>
/// <param name="original">原始文字</param>
/// <param name="key">密钥</param>
/// <param name="encoding">字符编码方案</param>
/// <returns>密文</returns>
public static string Encrypt(string original, string key)
{
byte[] buff = System.Text.Encoding.Default.GetBytes(original);
byte[] kb = System.Text.Encoding.Default.GetBytes(key);
return Convert.ToBase64String(Encrypt(buff,kb));
}
/// <summary>
/// 使用给定密钥字符串解密string
/// </summary>
/// <param name="original">密文</param>
/// <param name="key">密钥</param>
/// <returns>明文</returns>
public static string Decrypt(string original, string key)
{
return Decrypt(original,key,System.Text.Encoding.Default);
} /// <summary>
/// 使用给定密钥字符串解密string,返回指定编码方式明文
/// </summary>
/// <param name="encrypted">密文</param>
/// <param name="key">密钥</param>
/// <param name="encoding">字符编码方案</param>
/// <returns>明文</returns>
public static string Decrypt(string encrypted, string key,Encoding encoding)
{
byte[] buff = Convert.FromBase64String(encrypted);
byte[] kb = System.Text.Encoding.Default.GetBytes(key);
return encoding.GetString(Decrypt(buff,kb));
}
#endregion #region 使用 缺省密钥字符串 加密/解密/byte[]
/// <summary>
/// 使用缺省密钥字符串解密byte[]
/// </summary>
/// <param name="encrypted">密文</param>
/// <param name="key">密钥</param>
/// <returns>明文</returns>
public static byte[] Decrypt(byte[] encrypted)
{
byte[] key = System.Text.Encoding.Default.GetBytes("MATICSOFT");
return Decrypt(encrypted,key);
}
/// <summary>
/// 使用缺省密钥字符串加密
/// </summary>
/// <param name="original">原始数据</param>
/// <param name="key">密钥</param>
/// <returns>密文</returns>
public static byte[] Encrypt(byte[] original)
{
byte[] key = System.Text.Encoding.Default.GetBytes("MATICSOFT");
return Encrypt(original,key);
}
#endregion #region 使用 给定密钥 加密/解密/byte[] /// <summary>
/// 生成MD5摘要
/// </summary>
/// <param name="original">数据源</param>
/// <returns>摘要</returns>
public static byte[] MakeMD5(byte[] original)
{
MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
byte[] keyhash = hashmd5.ComputeHash(original);
hashmd5 = null;
return keyhash;
} /// <summary>
/// 使用给定密钥加密
/// </summary>
/// <param name="original">明文</param>
/// <param name="key">密钥</param>
/// <returns>密文</returns>
public static byte[] Encrypt(byte[] original, byte[] key)
{
TripleDESCryptoServiceProvider des = new TripleDESCryptoServiceProvider();
des.Key = MakeMD5(key);
des.Mode = CipherMode.ECB; return des.CreateEncryptor().TransformFinalBlock(original, , original.Length);
} /// <summary>
/// 使用给定密钥解密数据
/// </summary>
/// <param name="encrypted">密文</param>
/// <param name="key">密钥</param>
/// <returns>明文</returns>
public static byte[] Decrypt(byte[] encrypted, byte[] key)
{
TripleDESCryptoServiceProvider des = new TripleDESCryptoServiceProvider();
des.Key = MakeMD5(key);
des.Mode = CipherMode.ECB; return des.CreateDecryptor().TransformFinalBlock(encrypted, , encrypted.Length);
} #endregion }
}
DEncrypt
using System;
using System.Security.Cryptography;
using System.Text;
namespace Maticsoft.Common.DEncrypt
{
/// <summary>
/// DES加密/解密类。
/// LiTianPing
/// </summary>
public class DESEncrypt
{
public DESEncrypt()
{
} #region ========加密======== /// <summary>
/// 加密
/// </summary>
/// <param name="Text"></param>
/// <returns></returns>
public static string Encrypt(string Text)
{
return Encrypt(Text,"MATICSOFT");
}
/// <summary>
/// 加密数据
/// </summary>
/// <param name="Text"></param>
/// <param name="sKey"></param>
/// <returns></returns>
public static string Encrypt(string Text,string sKey)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] inputByteArray;
inputByteArray=Encoding.Default.GetBytes(Text);
des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(, ));
des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(, ));
System.IO.MemoryStream ms=new System.IO.MemoryStream();
CryptoStream cs=new CryptoStream(ms,des.CreateEncryptor(),CryptoStreamMode.Write);
cs.Write(inputByteArray,,inputByteArray.Length);
cs.FlushFinalBlock();
StringBuilder ret=new StringBuilder();
foreach( byte b in ms.ToArray())
{
ret.AppendFormat("{0:X2}",b);
}
return ret.ToString();
} #endregion #region ========解密======== /// <summary>
/// 解密
/// </summary>
/// <param name="Text"></param>
/// <returns></returns>
public static string Decrypt(string Text)
{
return Decrypt(Text,"MATICSOFT");
}
/// <summary>
/// 解密数据
/// </summary>
/// <param name="Text"></param>
/// <param name="sKey"></param>
/// <returns></returns>
public static string Decrypt(string Text,string sKey)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
int len;
len=Text.Length/;
byte[] inputByteArray = new byte[len];
int x,i;
for(x=;x<len;x++)
{
i = Convert.ToInt32(Text.Substring(x * , ), );
inputByteArray[x]=(byte)i;
}
des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(, ));
des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(, ));
System.IO.MemoryStream ms=new System.IO.MemoryStream();
CryptoStream cs=new CryptoStream(ms,des.CreateDecryptor(),CryptoStreamMode.Write);
cs.Write(inputByteArray,,inputByteArray.Length);
cs.FlushFinalBlock();
return Encoding.Default.GetString(ms.ToArray());
} #endregion }
}
DESEncrypt
using System;
using System.Security.Cryptography;
using System.Text;
using System.IO; namespace Common
{
public class Encrypt
{
public Encrypt()
{
} //密钥
private static byte[] arrDESKey = new byte[] {, , , , , , , };
private static byte[] arrDESIV = new byte[] {, , , , , , , }; /// <summary>
/// 加密。
/// </summary>
/// <param name="m_Need_Encode_String"></param>
/// <returns></returns>
public static string Encode(string m_Need_Encode_String)
{
if (m_Need_Encode_String == null)
{
throw new Exception("Error: \n源字符串为空！！");
}
DESCryptoServiceProvider objDES = new DESCryptoServiceProvider();
MemoryStream objMemoryStream = new MemoryStream();
CryptoStream objCryptoStream = new CryptoStream(objMemoryStream, objDES.CreateEncryptor(arrDESKey, arrDESIV),
CryptoStreamMode.Write);
StreamWriter objStreamWriter = new StreamWriter(objCryptoStream);
objStreamWriter.Write(m_Need_Encode_String);
objStreamWriter.Flush();
objCryptoStream.FlushFinalBlock();
objMemoryStream.Flush();
return Convert.ToBase64String(objMemoryStream.GetBuffer(), , (int) objMemoryStream.Length);
} /// <summary>
/// 解密。
/// </summary>
/// <param name="m_Need_Encode_String"></param>
/// <returns></returns>
public static string Decode(string m_Need_Encode_String)
{
if (m_Need_Encode_String == null)
{
throw new Exception("Error: \n源字符串为空！！");
}
DESCryptoServiceProvider objDES = new DESCryptoServiceProvider();
byte[] arrInput = Convert.FromBase64String(m_Need_Encode_String);
MemoryStream objMemoryStream = new MemoryStream(arrInput);
CryptoStream objCryptoStream = new CryptoStream(objMemoryStream, objDES.CreateDecryptor(arrDESKey, arrDESIV),
CryptoStreamMode.Read);
StreamReader objStreamReader = new StreamReader(objCryptoStream);
return objStreamReader.ReadToEnd();
} /// <summary>
/// md5
/// </summary>
/// <param name="encypStr"></param>
/// <returns></returns>
public static string Md5(string encypStr)
{
string retStr;
MD5CryptoServiceProvider m5 = new MD5CryptoServiceProvider();
byte[] inputBye;
byte[] outputBye;
inputBye = System.Text.Encoding.ASCII.GetBytes(encypStr);
outputBye = m5.ComputeHash(inputBye);
retStr = Convert.ToBase64String(outputBye);
return (retStr);
} #region TripleDES加密 /// <summary>
/// TripleDES加密
/// </summary>
public static string TripleDESEncrypting(string strSource)
{
try
{
byte[] bytIn = Encoding.Default.GetBytes(strSource);
byte[] key =
{
, , , , , , , , , , , , , , , , , , , , ,
, ,
}; //定义密钥
byte[] IV = {, , , , , , , }; //定义偏移量
TripleDESCryptoServiceProvider TripleDES = new TripleDESCryptoServiceProvider();
TripleDES.IV = IV;
TripleDES.Key = key;
ICryptoTransform encrypto = TripleDES.CreateEncryptor();
System.IO.MemoryStream ms = new System.IO.MemoryStream();
CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Write);
cs.Write(bytIn, , bytIn.Length);
cs.FlushFinalBlock();
byte[] bytOut = ms.ToArray();
return System.Convert.ToBase64String(bytOut);
}
catch (Exception ex)
{
throw new Exception("加密时候出现错误!错误提示:\n" + ex.Message);
}
} #endregion #region TripleDES解密 /// <summary>
/// TripleDES解密
/// </summary>
public static string TripleDESDecrypting(string Source)
{
try
{
byte[] bytIn = System.Convert.FromBase64String(Source);
byte[] key =
{
, , , , , , , , , , , , , , , , , , , , ,
, ,
}; //定义密钥
byte[] IV = {, , , , , , , }; //定义偏移量
TripleDESCryptoServiceProvider TripleDES = new TripleDESCryptoServiceProvider();
TripleDES.IV = IV;
TripleDES.Key = key;
ICryptoTransform encrypto = TripleDES.CreateDecryptor();
System.IO.MemoryStream ms = new System.IO.MemoryStream(bytIn, , bytIn.Length);
CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Read);
StreamReader strd = new StreamReader(cs, Encoding.Default);
return strd.ReadToEnd();
}
catch (Exception ex)
{
throw new Exception("解密时候出现错误!错误提示:\n" + ex.Message);
}
} #endregion
}
}
Encrypt
using System;
using System.Text;
using System.Security.Cryptography;
namespace Maticsoft.Common.DEncrypt
{
/// <summary>
/// 得到随机安全码（哈希加密）。
/// </summary>
public class HashEncode
{
public HashEncode()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
/// <summary>
/// 得到随机哈希加密字符串
/// </summary>
/// <returns></returns>
public static string GetSecurity()
{
string Security = HashEncoding(GetRandomValue());
return Security;
}
/// <summary>
/// 得到一个随机数值
/// </summary>
/// <returns></returns>
public static string GetRandomValue()
{
Random Seed = new Random();
string RandomVaule = Seed.Next(, int.MaxValue).ToString();
return RandomVaule;
}
/// <summary>
/// 哈希加密一个字符串
/// </summary>
/// <param name="Security"></param>
/// <returns></returns>
public static string HashEncoding(string Security)
{
byte[] Value;
UnicodeEncoding Code = new UnicodeEncoding();
byte[] Message = Code.GetBytes(Security);
SHA512Managed Arithmetic = new SHA512Managed();
Value = Arithmetic.ComputeHash(Message);
Security = "";
foreach(byte o in Value)
{
Security += (int) o + "O";
}
return Security;
}
}
}
HashEncode
using System;
using System.IO;
using System.Collections.Generic;
using System.Text; namespace Commons
{
/// <summary>
/// MD5各种长度加密字符、验证MD5等操作辅助类
/// </summary>
public class MD5Util
{
public MD5Util()
{
} /// <summary>
/// 获得32位的MD5加密
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static string GetMD5_32(string input)
{
System.Security.Cryptography.MD5 md5 = System.Security.Cryptography.MD5.Create();
byte[] data = md5.ComputeHash(System.Text.Encoding.Default.GetBytes(input));
StringBuilder sb = new StringBuilder();
for (int i = ; i < data.Length; i++)
{
sb.Append(data[i].ToString("x2"));
}
return sb.ToString();
} /// <summary>
/// 获得16位的MD5加密
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static string GetMD5_16(string input)
{
return GetMD5_32(input).Substring(, );
} /// <summary>
/// 获得8位的MD5加密
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static string GetMD5_8(string input)
{
return GetMD5_32(input).Substring(, );
} /// <summary>
/// 获得4位的MD5加密
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static string GetMD5_4(string input)
{
return GetMD5_32(input).Substring(, );
} /// <summary>
/// 添加MD5的前缀，便于检查有无篡改
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static string AddMD5Profix(string input)
{
return GetMD5_4(input) + input;
} /// <summary>
/// 移除MD5的前缀
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static string RemoveMD5Profix(string input)
{
return input.Substring();
} /// <summary>
/// 验证MD5前缀处理的字符串有无被篡改
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool ValidateValue(string input)
{
bool res = false;
if (input.Length >= )
{
string tmp = input.Substring();
if (input.Substring(, ) == GetMD5_4(tmp))
{
res = true;
}
}
return res;
} #region MD5签名验证
/// <summary>
/// 对给定文件路径的文件加上标签
/// </summary>
/// <param name="path">要加密的文件的路径</param>
/// <returns>标签的值</returns>
public static bool AddMD5(string path)
{
bool IsNeed = true; if (CheckMD5(path)) //已进行MD5处理
IsNeed = false; try
{
FileStream fsread = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read);
byte[] md5File = new byte[fsread.Length];
fsread.Read(md5File, , (int)fsread.Length); // 将文件流读取到Buffer中
fsread.Close(); if (IsNeed)
{
string result = MD5Buffer(md5File, , md5File.Length); // 对Buffer中的字节内容算MD5
byte[] md5 = System.Text.Encoding.ASCII.GetBytes(result); // 将字符串转换成字节数组以便写人到文件中
FileStream fsWrite = new FileStream(path, FileMode.Open, FileAccess.ReadWrite);
fsWrite.Write(md5File, , md5File.Length); // 将文件，MD5值 重新写入到文件中。
fsWrite.Write(md5, , md5.Length);
fsWrite.Close();
}
else
{
FileStream fsWrite = new FileStream(path, FileMode.Open, FileAccess.ReadWrite);
fsWrite.Write(md5File, , md5File.Length);
fsWrite.Close();
}
}
catch
{
return false;
} return true;
} /// <summary>
/// 对给定路径的文件进行验证
/// </summary>
/// <param name="path"></param>
/// <returns>是否加了标签或是否标签值与内容值一致</returns>
public static bool CheckMD5(string path)
{
try
{
FileStream get_file = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read);
byte[] md5File = new byte[get_file.Length]; // 读入文件
get_file.Read(md5File, , (int)get_file.Length);
get_file.Close(); string result = MD5Buffer(md5File, , md5File.Length - ); // 对文件除最后32位以外的字节计算MD5，这个32是因为标签位为32位。
string md5 = System.Text.Encoding.ASCII.GetString(md5File, md5File.Length - , ); //读取文件最后32位，其中保存的就是MD5值
return result == md5;
}
catch
{
return false;
}
} /// <summary>
/// 计算文件的MD5值
/// </summary>
/// <param name="MD5File">MD5签名文件字符数组</param>
/// <param name="index">计算起始位置</param>
/// <param name="count">计算终止位置</param>
/// <returns>计算结果</returns>
private static string MD5Buffer(byte[] MD5File, int index, int count)
{
System.Security.Cryptography.MD5CryptoServiceProvider get_md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();
byte[] hash_byte = get_md5.ComputeHash(MD5File, index, count);
string result = System.BitConverter.ToString(hash_byte); result = result.Replace("-", "");
return result;
}
#endregion private void Test()
{
string o = "i love u";
o = AddMD5Profix(o);
//o += " ";
Console.WriteLine(o);
Console.WriteLine(ValidateValue(o)); o = RemoveMD5Profix(o);
Console.WriteLine(o); }
}
}
MD5Util
using System;
using System.Text;
using System.Security.Cryptography;
using System.IO;
using System.Text.RegularExpressions;
using System.Collections;
using Core.Common; namespace Common
{
/// <summary>
/// MySecurity(安全类) 的摘要说明。
/// </summary>
public class MySecurity
{
/// <summary>
/// 初始化安全类
/// </summary>
public MySecurity()
{
///默认密码
key = "";
}
private string key; //默认密钥 private byte[] sKey;
private byte[] sIV; #region 加密字符串
/// <summary>
/// 加密字符串
/// </summary>
/// <param name="inputStr">输入字符串</param>
/// <param name="keyStr">密码，可以为“”</param>
/// <returns>输出加密后字符串</returns>
public static string SEncryptString(string inputStr, string keyStr)
{
MySecurity ws = new MySecurity();
return ws.EncryptString(inputStr, keyStr);
}
/// <summary>
/// 加密字符串
/// </summary>
/// <param name="inputStr">输入字符串</param>
/// <param name="keyStr">密码，可以为“”</param>
/// <returns>输出加密后字符串</returns>
public string EncryptString(string inputStr, string keyStr)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
if (keyStr == "")
keyStr = key;
byte[] inputByteArray = Encoding.Default.GetBytes(inputStr);
byte[] keyByteArray = Encoding.Default.GetBytes(keyStr);
SHA1 ha = new SHA1Managed();
byte[] hb = ha.ComputeHash(keyByteArray);
sKey = new byte[];
sIV = new byte[];
for (int i = ; i < ; i++)
sKey[i] = hb[i];
for (int i = ; i < ; i++)
sIV[i - ] = hb[i];
des.Key = sKey;
des.IV = sIV;
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, , inputByteArray.Length);
cs.FlushFinalBlock();
StringBuilder ret = new StringBuilder();
foreach (byte b in ms.ToArray())
{
ret.AppendFormat("{0:X2}", b);
}
cs.Close();
ms.Close();
return ret.ToString();
}
#endregion #region 加密字符串 密钥为系统默认 0123456789
/// <summary>
/// 加密字符串 密钥为系统默认
/// </summary>
/// <param name="inputStr">输入字符串</param>
/// <returns>输出加密后字符串</returns>
static public string SEncryptString(string inputStr)
{
MySecurity ws = new MySecurity();
return ws.EncryptString(inputStr, "");
}
#endregion #region 加密文件
/// <summary>
/// 加密文件
/// </summary>
/// <param name="filePath">输入文件路径</param>
/// <param name="savePath">加密后输出文件路径</param>
/// <param name="keyStr">密码，可以为“”</param>
/// <returns></returns>
public bool EncryptFile(string filePath, string savePath, string keyStr)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
if (keyStr == "")
keyStr = key;
FileStream fs = File.OpenRead(filePath);
byte[] inputByteArray = new byte[fs.Length];
fs.Read(inputByteArray, , (int)fs.Length);
fs.Close();
byte[] keyByteArray = Encoding.Default.GetBytes(keyStr);
SHA1 ha = new SHA1Managed();
byte[] hb = ha.ComputeHash(keyByteArray);
sKey = new byte[];
sIV = new byte[];
for (int i = ; i < ; i++)
sKey[i] = hb[i];
for (int i = ; i < ; i++)
sIV[i - ] = hb[i];
des.Key = sKey;
des.IV = sIV;
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, , inputByteArray.Length);
cs.FlushFinalBlock();
fs = File.OpenWrite(savePath);
foreach (byte b in ms.ToArray())
{
fs.WriteByte(b);
}
fs.Close();
cs.Close();
ms.Close();
return true;
}
#endregion #region 解密字符串
/// <summary>
/// 解密字符串
/// </summary>
/// <param name="inputStr">要解密的字符串</param>
/// <param name="keyStr">密钥</param>
/// <returns>解密后的结果</returns>
static public string SDecryptString(string inputStr, string keyStr)
{
MySecurity ws = new MySecurity();
return ws.DecryptString(inputStr, keyStr);
}
/// <summary>
/// 解密字符串 密钥为系统默认
/// </summary>
/// <param name="inputStr">要解密的字符串</param>
/// <returns>解密后的结果</returns>
static public string SDecryptString(string inputStr)
{
MySecurity ws = new MySecurity();
return ws.DecryptString(inputStr, "");
}
/// <summary>
/// 解密字符串
/// </summary>
/// <param name="inputStr">要解密的字符串</param>
/// <param name="keyStr">密钥</param>
/// <returns>解密后的结果</returns>
public string DecryptString(string inputStr, string keyStr)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
if (keyStr == "")
keyStr = key;
byte[] inputByteArray = new byte[inputStr.Length / ];
for (int x = ; x < inputStr.Length / ; x++)
{
int i = (Convert.ToInt32(inputStr.Substring(x * , ), ));
inputByteArray[x] = (byte)i;
}
byte[] keyByteArray = Encoding.Default.GetBytes(keyStr);
SHA1 ha = new SHA1Managed();
byte[] hb = ha.ComputeHash(keyByteArray);
sKey = new byte[];
sIV = new byte[];
for (int i = ; i < ; i++)
sKey[i] = hb[i];
for (int i = ; i < ; i++)
sIV[i - ] = hb[i];
des.Key = sKey;
des.IV = sIV;
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, , inputByteArray.Length);
cs.FlushFinalBlock();
StringBuilder ret = new StringBuilder();
return System.Text.Encoding.Default.GetString(ms.ToArray());
}
#endregion #region 解密文件
/// <summary>
/// 解密文件
/// </summary>
/// <param name="filePath">输入文件路径</param>
/// <param name="savePath">解密后输出文件路径</param>
/// <param name="keyStr">密码，可以为“”</param>
/// <returns></returns>
public bool DecryptFile(string filePath, string savePath, string keyStr)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
if (keyStr == "")
keyStr = key;
FileStream fs = File.OpenRead(filePath);
byte[] inputByteArray = new byte[fs.Length];
fs.Read(inputByteArray, , (int)fs.Length);
fs.Close();
byte[] keyByteArray = Encoding.Default.GetBytes(keyStr);
SHA1 ha = new SHA1Managed();
byte[] hb = ha.ComputeHash(keyByteArray);
sKey = new byte[];
sIV = new byte[];
for (int i = ; i < ; i++)
sKey[i] = hb[i];
for (int i = ; i < ; i++)
sIV[i - ] = hb[i];
des.Key = sKey;
des.IV = sIV;
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, , inputByteArray.Length);
cs.FlushFinalBlock();
fs = File.OpenWrite(savePath);
foreach (byte b in ms.ToArray())
{
fs.WriteByte(b);
}
fs.Close();
cs.Close();
ms.Close();
return true;
}
#endregion #region Base64加密
/// <summary>
/// Base64加密
/// </summary>
/// <param name="text">要加密的字符串</param>
/// <returns></returns>
public static string EncodeBase64(string text)
{
//如果字符串为空，则返回
if (StringHelper.IsNullOrEmpty<string>(text))
{
return "";
} try
{
char[] Base64Code = new char[]{'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T',
'U','V','W','X','Y','Z','a','b','c','d','e','f','g','h','i','j','k','l','m','n',
'o','p','q','r','s','t','u','v','w','x','y','z','','','','','','','','',
'','','+','/','='};
byte empty = (byte);
ArrayList byteMessage = new ArrayList(Encoding.Default.GetBytes(text));
StringBuilder outmessage;
int messageLen = byteMessage.Count;
int page = messageLen / ;
int use = ;
if ((use = messageLen % ) > )
{
for (int i = ; i < - use; i++)
byteMessage.Add(empty);
page++;
}
outmessage = new System.Text.StringBuilder(page * );
for (int i = ; i < page; i++)
{
byte[] instr = new byte[];
instr[] = (byte)byteMessage[i * ];
instr[] = (byte)byteMessage[i * + ];
instr[] = (byte)byteMessage[i * + ];
int[] outstr = new int[];
outstr[] = instr[] >> ;
outstr[] = ((instr[] & 0x03) << ) ^ (instr[] >> );
if (!instr[].Equals(empty))
outstr[] = ((instr[] & 0x0f) << ) ^ (instr[] >> );
else
outstr[] = ;
if (!instr[].Equals(empty))
outstr[] = (instr[] & 0x3f);
else
outstr[] = ;
outmessage.Append(Base64Code[outstr[]]);
outmessage.Append(Base64Code[outstr[]]);
outmessage.Append(Base64Code[outstr[]]);
outmessage.Append(Base64Code[outstr[]]);
}
return outmessage.ToString();
}
catch (Exception ex)
{
throw ex;
}
}
#endregion #region Base64解密
/// <summary>
/// Base64解密
/// </summary>
/// <param name="text">要解密的字符串</param>
public static string DecodeBase64(string text)
{
//如果字符串为空，则返回
if (StringHelper.IsNullOrEmpty<string>(text))
{
return "";
} //将空格替换为加号
text = text.Replace(" ", "+"); try
{
if ((text.Length % ) != )
{
return "包含不正确的BASE64编码";
}
if (!Regex.IsMatch(text, "^[A-Z0-9/+=]*$", RegexOptions.IgnoreCase))
{
return "包含不正确的BASE64编码";
}
string Base64Code = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
int page = text.Length / ;
ArrayList outMessage = new ArrayList(page * );
char[] message = text.ToCharArray();
for (int i = ; i < page; i++)
{
byte[] instr = new byte[];
instr[] = (byte)Base64Code.IndexOf(message[i * ]);
instr[] = (byte)Base64Code.IndexOf(message[i * + ]);
instr[] = (byte)Base64Code.IndexOf(message[i * + ]);
instr[] = (byte)Base64Code.IndexOf(message[i * + ]);
byte[] outstr = new byte[];
outstr[] = (byte)((instr[] << ) ^ ((instr[] & 0x30) >> ));
if (instr[] != )
{
outstr[] = (byte)((instr[] << ) ^ ((instr[] & 0x3c) >> ));
}
else
{
outstr[] = ;
}
if (instr[] != )
{
outstr[] = (byte)((instr[] << ) ^ instr[]);
}
else
{
outstr[] = ;
}
outMessage.Add(outstr[]);
if (outstr[] != )
outMessage.Add(outstr[]);
if (outstr[] != )
outMessage.Add(outstr[]);
}
byte[] outbyte = (byte[])outMessage.ToArray(Type.GetType("System.Byte"));
return Encoding.Default.GetString(outbyte);
}
catch (Exception ex)
{
throw ex;
}
}
#endregion
}
}
MySecurity
using System;
using System.Text;
using System.Security.Cryptography;
namespace Maticsoft.Common.DEncrypt
{
/// <summary>
/// RSA加密解密及RSA签名和验证
/// </summary>
public class RSACryption
{
public RSACryption()
{
} #region RSA 加密解密 #region RSA 的密钥产生 /// <summary>
/// RSA 的密钥产生 产生私钥 和公钥
/// </summary>
/// <param name="xmlKeys"></param>
/// <param name="xmlPublicKey"></param>
public void RSAKey(out string xmlKeys,out string xmlPublicKey)
{
System.Security.Cryptography.RSACryptoServiceProvider rsa=new RSACryptoServiceProvider();
xmlKeys=rsa.ToXmlString(true);
xmlPublicKey = rsa.ToXmlString(false);
}
#endregion #region RSA的加密函数
//##############################################################################
//RSA 方式加密
//说明KEY必须是XML的行式,返回的是字符串
//在有一点需要说明！！该加密方式有 长度 限制的！！
//############################################################################## //RSA的加密函数 string
public string RSAEncrypt(string xmlPublicKey,string m_strEncryptString )
{ byte[] PlainTextBArray;
byte[] CypherTextBArray;
string Result;
RSACryptoServiceProvider rsa=new RSACryptoServiceProvider();
rsa.FromXmlString(xmlPublicKey);
PlainTextBArray = (new UnicodeEncoding()).GetBytes(m_strEncryptString);
CypherTextBArray = rsa.Encrypt(PlainTextBArray, false);
Result=Convert.ToBase64String(CypherTextBArray);
return Result; }
//RSA的加密函数 byte[]
public string RSAEncrypt(string xmlPublicKey,byte[] EncryptString )
{ byte[] CypherTextBArray;
string Result;
RSACryptoServiceProvider rsa=new RSACryptoServiceProvider();
rsa.FromXmlString(xmlPublicKey);
CypherTextBArray = rsa.Encrypt(EncryptString, false);
Result=Convert.ToBase64String(CypherTextBArray);
return Result; }
#endregion #region RSA的解密函数
//RSA的解密函数 string
public string RSADecrypt(string xmlPrivateKey, string m_strDecryptString )
{
byte[] PlainTextBArray;
byte[] DypherTextBArray;
string Result;
System.Security.Cryptography.RSACryptoServiceProvider rsa=new RSACryptoServiceProvider();
rsa.FromXmlString(xmlPrivateKey);
PlainTextBArray =Convert.FromBase64String(m_strDecryptString);
DypherTextBArray=rsa.Decrypt(PlainTextBArray, false);
Result=(new UnicodeEncoding()).GetString(DypherTextBArray);
return Result; } //RSA的解密函数 byte
public string RSADecrypt(string xmlPrivateKey, byte[] DecryptString )
{
byte[] DypherTextBArray;
string Result;
System.Security.Cryptography.RSACryptoServiceProvider rsa=new RSACryptoServiceProvider();
rsa.FromXmlString(xmlPrivateKey);
DypherTextBArray=rsa.Decrypt(DecryptString, false);
Result=(new UnicodeEncoding()).GetString(DypherTextBArray);
return Result; }
#endregion #endregion #region RSA数字签名 #region 获取Hash描述表
//获取Hash描述表
public bool GetHash(string m_strSource, ref byte[] HashData)
{
//从字符串中取得Hash描述
byte[] Buffer;
System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5");
Buffer = System.Text.Encoding.GetEncoding("GB2312").GetBytes(m_strSource);
HashData = MD5.ComputeHash(Buffer); return true;
} //获取Hash描述表
public bool GetHash(string m_strSource, ref string strHashData)
{ //从字符串中取得Hash描述
byte[] Buffer;
byte[] HashData;
System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5");
Buffer = System.Text.Encoding.GetEncoding("GB2312").GetBytes(m_strSource);
HashData = MD5.ComputeHash(Buffer); strHashData = Convert.ToBase64String(HashData);
return true; } //获取Hash描述表
public bool GetHash(System.IO.FileStream objFile, ref byte[] HashData)
{ //从文件中取得Hash描述
System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5");
HashData = MD5.ComputeHash(objFile);
objFile.Close(); return true; } //获取Hash描述表
public bool GetHash(System.IO.FileStream objFile, ref string strHashData)
{ //从文件中取得Hash描述
byte[] HashData;
System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5");
HashData = MD5.ComputeHash(objFile);
objFile.Close(); strHashData = Convert.ToBase64String(HashData); return true; }
#endregion #region RSA签名
//RSA签名
public bool SignatureFormatter(string p_strKeyPrivate, byte[] HashbyteSignature, ref byte[] EncryptedSignatureData)
{ System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); RSA.FromXmlString(p_strKeyPrivate);
System.Security.Cryptography.RSAPKCS1SignatureFormatter RSAFormatter = new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);
//设置签名的算法为MD5
RSAFormatter.SetHashAlgorithm("MD5");
//执行签名
EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature); return true; } //RSA签名
public bool SignatureFormatter(string p_strKeyPrivate, byte[] HashbyteSignature, ref string m_strEncryptedSignatureData)
{ byte[] EncryptedSignatureData; System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); RSA.FromXmlString(p_strKeyPrivate);
System.Security.Cryptography.RSAPKCS1SignatureFormatter RSAFormatter = new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);
//设置签名的算法为MD5
RSAFormatter.SetHashAlgorithm("MD5");
//执行签名
EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature); m_strEncryptedSignatureData = Convert.ToBase64String(EncryptedSignatureData); return true; } //RSA签名
public bool SignatureFormatter(string p_strKeyPrivate, string m_strHashbyteSignature, ref byte[] EncryptedSignatureData)
{ byte[] HashbyteSignature; HashbyteSignature = Convert.FromBase64String(m_strHashbyteSignature);
System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); RSA.FromXmlString(p_strKeyPrivate);
System.Security.Cryptography.RSAPKCS1SignatureFormatter RSAFormatter = new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);
//设置签名的算法为MD5
RSAFormatter.SetHashAlgorithm("MD5");
//执行签名
EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature); return true; } //RSA签名
public bool SignatureFormatter(string p_strKeyPrivate, string m_strHashbyteSignature, ref string m_strEncryptedSignatureData)
{ byte[] HashbyteSignature;
byte[] EncryptedSignatureData; HashbyteSignature = Convert.FromBase64String(m_strHashbyteSignature);
System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); RSA.FromXmlString(p_strKeyPrivate);
System.Security.Cryptography.RSAPKCS1SignatureFormatter RSAFormatter = new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);
//设置签名的算法为MD5
RSAFormatter.SetHashAlgorithm("MD5");
//执行签名
EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature); m_strEncryptedSignatureData = Convert.ToBase64String(EncryptedSignatureData); return true; }
#endregion #region RSA 签名验证 public bool SignatureDeformatter(string p_strKeyPublic, byte[] HashbyteDeformatter, byte[] DeformatterData)
{ System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); RSA.FromXmlString(p_strKeyPublic);
System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);
//指定解密的时候HASH算法为MD5
RSADeformatter.SetHashAlgorithm("MD5"); if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData))
{
return true;
}
else
{
return false;
} } public bool SignatureDeformatter(string p_strKeyPublic, string p_strHashbyteDeformatter, byte[] DeformatterData)
{ byte[] HashbyteDeformatter; HashbyteDeformatter = Convert.FromBase64String(p_strHashbyteDeformatter); System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); RSA.FromXmlString(p_strKeyPublic);
System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);
//指定解密的时候HASH算法为MD5
RSADeformatter.SetHashAlgorithm("MD5"); if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData))
{
return true;
}
else
{
return false;
} } public bool SignatureDeformatter(string p_strKeyPublic, byte[] HashbyteDeformatter, string p_strDeformatterData)
{ byte[] DeformatterData; System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); RSA.FromXmlString(p_strKeyPublic);
System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);
//指定解密的时候HASH算法为MD5
RSADeformatter.SetHashAlgorithm("MD5"); DeformatterData =Convert.FromBase64String(p_strDeformatterData); if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData))
{
return true;
}
else
{
return false;
} } public bool SignatureDeformatter(string p_strKeyPublic, string p_strHashbyteDeformatter, string p_strDeformatterData)
{ byte[] DeformatterData;
byte[] HashbyteDeformatter; HashbyteDeformatter = Convert.FromBase64String(p_strHashbyteDeformatter);
System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); RSA.FromXmlString(p_strKeyPublic);
System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);
//指定解密的时候HASH算法为MD5
RSADeformatter.SetHashAlgorithm("MD5"); DeformatterData =Convert.FromBase64String(p_strDeformatterData); if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData))
{
return true;
}
else
{
return false;
} } #endregion #endregion }
}
RSACryption
using System;
using System.Security.Cryptography;
using System.Text; namespace Core.Common
{
/// <summary>
/// 非对称加密验证辅助类
/// </summary>
public class RSASecurityHelper
{
/// <summary>
/// 对注册信息数据采用非对称加密的方式加密
/// </summary>
/// <param name="originalString">未加密的文本，如机器码</param>
/// <param name="encrytedString">加密后的文本，如注册序列号</param>
/// <returns>如果验证成功返回True，否则为False</returns>
public static bool Validate(string originalString, string encrytedString)
{
bool bPassed = false;
using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider())
{
try
{
rsa.FromXmlString(UIConstants.PublicKey); //公钥
RSAPKCS1SignatureDeformatter formatter = new RSAPKCS1SignatureDeformatter(rsa);
formatter.SetHashAlgorithm("SHA1"); byte[] key = Convert.FromBase64String(encrytedString); //验证
SHA1Managed sha = new SHA1Managed();
byte[] name = sha.ComputeHash(ASCIIEncoding.ASCII.GetBytes(originalString));
if (formatter.VerifySignature(name, key))
{
bPassed = true;
}
}
catch
{
}
}
return bPassed;
}
}
}
RSASecurityHelper
using System;
using System.Collections.Generic;
using System.Text;
using System.Web;
using System.Text.RegularExpressions; namespace hic.Common
{
public class SecurityHelper
{
/// <summary>
/// MD5字符串加密
/// </summary>
/// <param name="source">待加密字符串</param>
/// <returns></returns>
public static string MD5(string source)
{
return MD5(source, true);
} /// <summary>
/// MD5字符串加密
/// </summary>
/// <param name="source">待加密字符串</param>
/// <param name="ishalf">加密是16位还是32位，如果为true则是16位。</param>
/// <returns></returns>
public static string MD5(string source, bool ishalf)
{
string outputStr = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(source, "MD5").ToLower();
if (ishalf)//16位MD5加密（取32位加密的9~25字符）
outputStr = outputStr.Substring(, );
return outputStr;
} /// <summary>
/// 对字符串进行Base64编码
/// </summary>
/// <param name="source">待编码字符串</param>
/// <returns></returns>
public static string EncodeBase64(string source)
{
UnicodeEncoding code = new UnicodeEncoding();
byte[] bytes = code.GetBytes(source);
return Convert.ToBase64String(bytes);
} /// <summary>
/// 对字符串进行Base64解码
/// </summary>
/// <param name="source">待解码字符串</param>
/// <returns></returns>
public static string DecodeBase64(string source)
{
UnicodeEncoding code = new UnicodeEncoding();
byte[] bytes = Convert.FromBase64String(source);
return code.GetString(bytes);
} /// <summary>
/// 检查当前IP是否是受限IP
/// </summary>
/// <param name="LimitedIP">受限的IP，格式如:192.168.1.110|212.235.*.*|232.*.*.*</param>
/// <returns>返回true表示IP未受到限制</returns>
public static bool CheckIPIsLimited(string limitedIP)
{
string currentIP = GetUserIP();
if (limitedIP == null || limitedIP.Trim() == string.Empty)
return true;
limitedIP.Replace(".", @"\.");
limitedIP.Replace("*", @"[^\.]{1,3}");
Regex reg = new Regex(limitedIP, RegexOptions.Compiled);
Match match = reg.Match(currentIP);
return !match.Success;
} /// <summary>
/// 得到用户IP
/// </summary>
/// <returns></returns>
public static string GetUserIP()
{
return HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"].ToString();
}
}
}
SecurityHelper
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