代碼
//須添加對System.Web的引用
using System.Web.Security;
/// <summary>
/// SHA1加密字元串
/// </summary>
/// <param name="source">源字元串</param>
/// <returns>加密後的字元串</returns>
public string SHA1(string source)
{
return FormsAuthentication.HashPasswordForStoringInConfigFile(source, "SHA1");
}
/// MD5加密字元串
public string MD5(string source)
return FormsAuthentication.HashPasswordForStoringInConfigFile(source, "MD5");;
//須添加對System.Web的引用
using System.Web.Security;
/// <summary>
/// SHA1加密字元串
/// </summary>
/// <param name="source">源字元串</param>
/// <returns>加密後的字元串</returns>
public string SHA1(string source)
{
return FormsAuthentication.HashPasswordForStoringInConfigFile(source, "SHA1");
}
/// MD5加密字元串
public string MD5(string source)
return FormsAuthentication.HashPasswordForStoringInConfigFile(source, "MD5");;
//方法二(可逆加密解密)：
using System.Security.Cryptography;
public string Encode(string data)
byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);
DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
int i = cryptoProvider.KeySize;
MemoryStream ms = new MemoryStream();
CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateEncryptor(byKey, byIV), CryptoStreamMode.Write);
StreamWriter sw = new StreamWriter(cst);
sw.Write(data);
sw.Flush();
cst.FlushFinalBlock();
return Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length);
public string Decode(string data)
byte[] byEnc;
try
{
byEnc = Convert.FromBase64String(data);
}
catch
return null;
MemoryStream ms = new MemoryStream(byEnc);
CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateDecryptor(byKey, byIV), CryptoStreamMode.Read);
StreamReader sr = new StreamReader(cst);
return sr.ReadToEnd();
using System.Security.Cryptography;
public string Encode(string data)
byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);
DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
int i = cryptoProvider.KeySize;
MemoryStream ms = new MemoryStream();
CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateEncryptor(byKey, byIV), CryptoStreamMode.Write);
StreamWriter sw = new StreamWriter(cst);
sw.Write(data);
sw.Flush();
cst.FlushFinalBlock();
return Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length);
public string Decode(string data)
byte[] byEnc;
try
{
byEnc = Convert.FromBase64String(data);
}
catch
return null;
MemoryStream ms = new MemoryStream(byEnc);
CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateDecryptor(byKey, byIV), CryptoStreamMode.Read);
StreamReader sr = new StreamReader(cst);
return sr.ReadToEnd();
//方法三(MD5不可逆)：
//MD5不可逆加密
//32位加密
public string GetMD5_32(string s, string _input_charset)
MD5 md5 = new MD5CryptoServiceProvider();
byte[] t = md5.ComputeHash(Encoding.GetEncoding(_input_charset).GetBytes(s));
StringBuilder sb = new StringBuilder(32);
for (int i = 0; i < t.Length; i++)
sb.Append(t[i].ToString("x").PadLeft(2, '0'));
return sb.ToString();
//16位加密
public static string GetMd5_16(string ConvertString)
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
string t2 = BitConverter.ToString(md5.ComputeHash(UTF8Encoding.Default.GetBytes(ConvertString)), 4, 8);
t2 = t2.Replace("-", "");
return t2;
//MD5不可逆加密
//32位加密
public string GetMD5_32(string s, string _input_charset)
MD5 md5 = new MD5CryptoServiceProvider();
byte[] t = md5.ComputeHash(Encoding.GetEncoding(_input_charset).GetBytes(s));
StringBuilder sb = new StringBuilder(32);
for (int i = 0; i < t.Length; i++)
sb.Append(t[i].ToString("x").PadLeft(2, '0'));
return sb.ToString();
//16位加密
public static string GetMd5_16(string ConvertString)
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
string t2 = BitConverter.ToString(md5.ComputeHash(UTF8Encoding.Default.GetBytes(ConvertString)), 4, 8);
t2 = t2.Replace("-", "");
return t2;
//方法四(對稱加密)：
using System.IO;
private SymmetricAlgorithm mobjCryptoService;
private string Key;
/// <summary>
/// 對稱加密類的構造函數
/// </summary>
public SymmetricMethod()
mobjCryptoService = new RijndaelManaged();
Key = "Guz(%&hj7x89H$yuBI0456FtmaT5&fvHUFCy76*h%(HilJ$lhj!y6&(*jkP87jH7";
/// 獲得密鑰
/// <returns>密鑰</returns>
private byte[] GetLegalKey()
string sTemp = Key;
mobjCryptoService.GenerateKey();
byte[] bytTemp = mobjCryptoService.Key;
int KeyLength = bytTemp.Length;
if (sTemp.Length > KeyLength)
sTemp = sTemp.Substring(0, KeyLength);
else if (sTemp.Length < KeyLength)
sTemp = sTemp.PadRight(KeyLength, ' ');
return ASCIIEncoding.ASCII.GetBytes(sTemp);
/// 獲得初始向量IV
/// <returns>初試向量IV</returns>
private byte[] GetLegalIV()
string sTemp = "E4ghj*Ghg7!rNIfb&95GUY86GfghUb#er57HBh(u%g6HJ($jhWk7&!hg4ui%$hjk";
mobjCryptoService.GenerateIV();
byte[] bytTemp = mobjCryptoService.IV;
int IVLength = bytTemp.Length;
if (sTemp.Length > IVLength)
sTemp = sTemp.Substring(0, IVLength);
else if (sTemp.Length < IVLength)
sTemp = sTemp.PadRight(IVLength, ' ');
/// 加密方法
/// <param name="Source">待加密的串</param>
/// <returns>經過加密的串</returns>
public string Encrypto(string Source)
byte[] bytIn = UTF8Encoding.UTF8.GetBytes(Source);
mobjCryptoService.Key = GetLegalKey();
mobjCryptoService.IV = GetLegalIV();
ICryptoTransform encrypto = mobjCryptoService.CreateEncryptor();
CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Write);
cs.Write(bytIn, 0, bytIn.Length);
cs.FlushFinalBlock();
ms.Close();
byte[] bytOut = ms.ToArray();
return Convert.ToBase64String(bytOut);
/// 解密方法
/// <param name="Source">待解密的串</param>
/// <returns>經過解密的串</returns>
public string Decrypto(string Source)
byte[] bytIn = Convert.FromBase64String(Source);
MemoryStream ms = new MemoryStream(bytIn, 0, bytIn.Length);
ICryptoTransform encrypto = mobjCryptoService.CreateDecryptor();
CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Read);
StreamReader sr = new StreamReader(cs);
using System.IO;
private SymmetricAlgorithm mobjCryptoService;
private string Key;
/// <summary>
/// 對稱加密類的構造函數
/// </summary>
public SymmetricMethod()
mobjCryptoService = new RijndaelManaged();
Key = "Guz(%&hj7x89H$yuBI0456FtmaT5&fvHUFCy76*h%(HilJ$lhj!y6&(*jkP87jH7";
/// 獲得密鑰
/// <returns>密鑰</returns>
private byte[] GetLegalKey()
string sTemp = Key;
mobjCryptoService.GenerateKey();
byte[] bytTemp = mobjCryptoService.Key;
int KeyLength = bytTemp.Length;
if (sTemp.Length > KeyLength)
sTemp = sTemp.Substring(0, KeyLength);
else if (sTemp.Length < KeyLength)
sTemp = sTemp.PadRight(KeyLength, ' ');
return ASCIIEncoding.ASCII.GetBytes(sTemp);
/// 獲得初始向量IV
/// <returns>初試向量IV</returns>
private byte[] GetLegalIV()
string sTemp = "E4ghj*Ghg7!rNIfb&95GUY86GfghUb#er57HBh(u%g6HJ($jhWk7&!hg4ui%$hjk";
mobjCryptoService.GenerateIV();
byte[] bytTemp = mobjCryptoService.IV;
int IVLength = bytTemp.Length;
if (sTemp.Length > IVLength)
sTemp = sTemp.Substring(0, IVLength);
else if (sTemp.Length < IVLength)
sTemp = sTemp.PadRight(IVLength, ' ');
/// 加密方法
/// <param name="Source">待加密的串</param>
/// <returns>經過加密的串</returns>
public string Encrypto(string Source)
byte[] bytIn = UTF8Encoding.UTF8.GetBytes(Source);
mobjCryptoService.Key = GetLegalKey();
mobjCryptoService.IV = GetLegalIV();
ICryptoTransform encrypto = mobjCryptoService.CreateEncryptor();
CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Write);
cs.Write(bytIn, 0, bytIn.Length);
cs.FlushFinalBlock();
ms.Close();
byte[] bytOut = ms.ToArray();
return Convert.ToBase64String(bytOut);
/// 解密方法
/// <param name="Source">待解密的串</param>
/// <returns>經過解密的串</returns>
public string Decrypto(string Source)
byte[] bytIn = Convert.FromBase64String(Source);
MemoryStream ms = new MemoryStream(bytIn, 0, bytIn.Length);
ICryptoTransform encrypto = mobjCryptoService.CreateDecryptor();
CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Read);
StreamReader sr = new StreamReader(cs);
//方法五：
using System.Text;
//預設密鑰向量
private static byte[] Keys = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
/**//**//**//// <summary>
/// DES加密字元串
/// <param name="encryptString">待加密的字元串</param>
/// <param name="encryptKey">加密密鑰,要求為8位</param>
/// <returns>加密成功傳回加密後的字元串，失敗傳回源串</returns>
public static string EncryptDES(string encryptString, string encryptKey)
byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 8));
byte[] rgbIV = Keys;
byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, dCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, 0, inputByteArray.Length);
cStream.FlushFinalBlock();
return Convert.ToBase64String(mStream.ToArray());
return encryptString;
/// DES解密字元串
/// <param name="decryptString">待解密的字元串</param>
/// <param name="decryptKey">解密密鑰,要求為8位,和加密密鑰相同</param>
/// <returns>解密成功傳回解密後的字元串，失敗返源串</returns>
public static string DecryptDES(string decryptString, string decryptKey)
byte[] rgbKey = Encoding.UTF8.GetBytes(decryptKey);
byte[] inputByteArray = Convert.FromBase64String(decryptString);
DESCryptoServiceProvider DCSP = new DESCryptoServiceProvider();
CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
return Encoding.UTF8.GetString(mStream.ToArray());
return decryptString;
}
using System.Text;
//預設密鑰向量
private static byte[] Keys = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
/**//**//**//// <summary>
/// DES加密字元串
/// <param name="encryptString">待加密的字元串</param>
/// <param name="encryptKey">加密密鑰,要求為8位</param>
/// <returns>加密成功傳回加密後的字元串，失敗傳回源串</returns>
public static string EncryptDES(string encryptString, string encryptKey)
byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 8));
byte[] rgbIV = Keys;
byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, dCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, 0, inputByteArray.Length);
cStream.FlushFinalBlock();
return Convert.ToBase64String(mStream.ToArray());
return encryptString;
/// DES解密字元串
/// <param name="decryptString">待解密的字元串</param>
/// <param name="decryptKey">解密密鑰,要求為8位,和加密密鑰相同</param>
/// <returns>解密成功傳回解密後的字元串，失敗返源串</returns>
public static string DecryptDES(string decryptString, string decryptKey)
byte[] rgbKey = Encoding.UTF8.GetBytes(decryptKey);
byte[] inputByteArray = Convert.FromBase64String(decryptString);
DESCryptoServiceProvider DCSP = new DESCryptoServiceProvider();
CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
return Encoding.UTF8.GetString(mStream.ToArray());
return decryptString;
//方法六(檔案加密)：
//加密檔案
private static void EncryptData(String inName, String outName, byte[] desKey, byte[] desIV)
//Create the file streams to handle the input and output files.
FileStream fin = new FileStream(inName, FileMode.Open, FileAccess.Read);
FileStream fout = new FileStream(outName, FileMode.OpenOrCreate, FileAccess.Write);
fout.SetLength(0);
//Create variables to help with read and write.
byte[] bin = new byte[100]; //This is intermediate storage for the encryption.
long rdlen = 0; //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(desKey, desIV), CryptoStreamMode.Write);
//Read from the input file, then encrypt and write to the output file.
while (rdlen < totlen)
len = fin.Read(bin, 0, 100);
encStream.Write(bin, 0, len);
rdlen = rdlen + len;
encStream.Close();
fout.Close();
fin.Close();
//解密檔案
private static void DecryptData(String inName, String outName, byte[] desKey, byte[] desIV)
CryptoStream encStream = new CryptoStream(fout, des.CreateDecryptor(desKey, desIV), CryptoStreamMode.Write);
//加密檔案
private static void EncryptData(String inName, String outName, byte[] desKey, byte[] desIV)
//Create the file streams to handle the input and output files.
FileStream fin = new FileStream(inName, FileMode.Open, FileAccess.Read);
FileStream fout = new FileStream(outName, FileMode.OpenOrCreate, FileAccess.Write);
fout.SetLength(0);
//Create variables to help with read and write.
byte[] bin = new byte[100]; //This is intermediate storage for the encryption.
long rdlen = 0; //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(desKey, desIV), CryptoStreamMode.Write);
//Read from the input file, then encrypt and write to the output file.
while (rdlen < totlen)
len = fin.Read(bin, 0, 100);
encStream.Write(bin, 0, len);
rdlen = rdlen + len;
encStream.Close();
fout.Close();
fin.Close();
//解密檔案
private static void DecryptData(String inName, String outName, byte[] desKey, byte[] desIV)
CryptoStream encStream = new CryptoStream(fout, des.CreateDecryptor(desKey, desIV), CryptoStreamMode.Write);