AES
using System;
using System.Security.Cryptography;
using System.Text;
namespace Helper.Encryption
{
/// <summary>
/// 加密
/// </summary>
public class AES
{
/// <summary>
/// DES加密字符串
/// </summary>
/// <param name="encryptString">待加密的字符串</param>
/// <param name="encryptKey">加密密钥,要求为8位</param>
/// <returns>加密成功返回加密后的字符串,失败返回源串</returns>
public static string AESEncrypt(string encryptString, string encryptKey)
{
try
{
if (string.IsNullOrEmpty(encryptString)) return null;
Byte[] toEncryptArray = Encoding.UTF8.GetBytes(encryptString);
System.Security.Cryptography.RijndaelManaged rm = new System.Security.Cryptography.RijndaelManaged
{
Key = Encoding.UTF8.GetBytes(encryptKey),
Mode = System.Security.Cryptography.CipherMode.ECB,
Padding = System.Security.Cryptography.PaddingMode.PKCS7
};
System.Security.Cryptography.ICryptoTransform cTransform = rm.CreateEncryptor();
Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
return Convert.ToBase64String(resultArray, 0, resultArray.Length);
}
catch (Exception ex)
{
return "";
}
}
/// <summary>
/// DES解密字符串
/// </summary>
/// <param name="decryptString">待解密的字符串</param>
/// <param name="decryptKey">解密密钥,要求为8位,和加密密钥相同</param>
/// <returns>解密成功返回解密后的字符串,失败返源串</returns>
public static string AESDecrypt(string decryptString, string decryptKey)
{
try
{
if (string.IsNullOrEmpty(decryptString)) return null;
Byte[] toEncryptArray = Convert.FromBase64String(decryptString);
System.Security.Cryptography.RijndaelManaged rm = new System.Security.Cryptography.RijndaelManaged
{
Key = Encoding.UTF8.GetBytes(decryptKey),
Mode = System.Security.Cryptography.CipherMode.ECB,
Padding = System.Security.Cryptography.PaddingMode.PKCS7
};
System.Security.Cryptography.ICryptoTransform cTransform = rm.CreateDecryptor();
Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
return Encoding.UTF8.GetString(resultArray);
}
catch (Exception ex)
{
return "";
}
}
}
}
DES
using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
namespace Helper.Encryption
{
public class DES
{
/// <summary>
/// 32位Key值：
/// </summary>
private static byte[] DESKey = new byte[] { 0x03, 0x0B, 0x13, 0x1B, 0x23, 0x2B, 0x33, 0x3B, 0x43, 0x4B, 0x9B, 0x93, 0x8B, 0x83, 0x7B, 0x73, 0x6B, 0x63, 0x5B, 0x53, 0xF3, 0xFB, 0xA3, 0xAB, 0xB3, 0xBB, 0xC3, 0xEB, 0xE3, 0xDB, 0xD3, 0xCB };
#region DES加密
/// <summary>
/// DES加密
/// </summary>
/// <param name="strSource">待加密字串</param>
/// <returns>加密后的字符串</returns>
public static string DESEncrypt(string strSource)
{
return DESEncrypt(strSource, DESKey);
}
/// <summary>
/// DES加密
/// </summary>
/// <param name="strSource">待加密字串</param>
/// <param name="key">Key值</param>
/// <returns>加密后的字符串</returns>
public static string DESEncrypt(string strSource, byte[] key)
{
SymmetricAlgorithm sa = Rijndael.Create();
sa.Key = key;
sa.Mode = CipherMode.ECB;
sa.Padding = PaddingMode.Zeros;
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, sa.CreateEncryptor(), CryptoStreamMode.Write);
byte[] byt = Encoding.Unicode.GetBytes(strSource);
cs.Write(byt, 0, byt.Length);
cs.FlushFinalBlock();
cs.Close();
return Convert.ToBase64String(ms.ToArray());
}
#endregion
#region DES解密
/// <summary>
/// DES解密
/// </summary>
/// <param name="strSource">待解密的字串</param>
/// <returns>解密后的字符串</returns>
public static string DESDecrypt(string strSource)
{
return DESDecrypt(strSource, DESKey);
}
/// <summary>
/// DES解密
/// </summary>
/// <param name="strSource">待解密的字串</param>
/// <param name="key">32位Key值</param>
/// <returns>解密后的字符串</returns>
public static string DESDecrypt(string strSource, byte[] key)
{
SymmetricAlgorithm sa = Rijndael.Create();
sa.Key = key;
sa.Mode = CipherMode.ECB;
sa.Padding = PaddingMode.Zeros;
ICryptoTransform ct = sa.CreateDecryptor();
byte[] byt = Convert.FromBase64String(strSource);
MemoryStream ms = new MemoryStream(byt);
CryptoStream cs = new CryptoStream(ms, ct, CryptoStreamMode.Read);
StreamReader sr = new StreamReader(cs, Encoding.Unicode);
return sr.ReadToEnd().Trim('\0');
}
#endregion
}
}
MD5
using System.Security.Cryptography;
using System.Text;
namespace Helper.Encryption
{
public class MD5
{
#region MD5函数
/// <summary>
/// MD5函数,需引用：using System.Security.Cryptography;
/// </summary>
/// <param name="str">原始字符串</param>
/// <returns>MD5结果</returns>
public static string Encrypto(string str)
{
//微软md5方法参考return FormsAuthentication.HashPasswordForStoringInConfigFile(str, "md5");
byte[] b = Encoding.Default.GetBytes(str);
b = new MD5CryptoServiceProvider().ComputeHash(b);
string ret = "";
for (int i = 0; i < b.Length; i++)
ret += b[i].ToString("x").PadLeft(2, '0');
return ret;
}
#endregion
}
}
SHA256
using System;
using System.Security.Cryptography;
using System.Text;
namespace Helper.Encryption
{
public partial class SHA256
{
#region SHA256函数
/// <summary>
/// SHA256函数
/// </summary>
/// /// <param name="str">原始字符串</param>
/// <returns>SHA256结果</returns>
public static string Encrypto(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
}
#endregion
}
}
Symmetric
using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
namespace Helper.Encryption
{
/// <summary>
/// 对称加密
/// </summary>
public class Symmetric
{
private SymmetricAlgorithm mobjCryptoService;
private string Key;
/// <summary>
/// 对称加密类的构造函数
/// </summary>
public Symmetric()
{
mobjCryptoService = new RijndaelManaged();
Key = "Guz(%&hj7x89H$yuBI0456FtmaT5&fvHUFCy76*h%(HilJ$lhj!y6&(*jkP87jH7";
}
/// <summary>
/// 获得密钥
/// </summary>
/// <returns>密钥</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);
}
/// <summary>
/// 获得初始向量IV
/// </summary>
/// <returns>初试向量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, ' ');
return ASCIIEncoding.ASCII.GetBytes(sTemp);
}
/// <summary>
/// 加密方法
/// </summary>
/// <param name="Source">待加密的串</param>
/// <returns>经过加密的串</returns>
public string Encrypto(string Source)
{
byte[] bytIn = UTF8Encoding.UTF8.GetBytes(Source);
MemoryStream ms = new MemoryStream();
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);
}
/// <summary>
/// 解密方法
/// </summary>
/// <param name="Source">待解密的串</param>
/// <returns>经过解密的串</returns>
public string Decrypto(string Source)
{
byte[] bytIn = Convert.FromBase64String(Source);
MemoryStream ms = new MemoryStream(bytIn, 0, bytIn.Length);
mobjCryptoService.Key = GetLegalKey();
mobjCryptoService.IV = GetLegalIV();
ICryptoTransform encrypto = mobjCryptoService.CreateDecryptor();
CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Read);
StreamReader sr = new StreamReader(cs);
return sr.ReadToEnd();
}
}
}
UCS2
/// <summary>
/// 使用UCS2进行编码，用于发送Unicode字符
/// </summary>
/// <param name="str">短信内容</param>
/// <returns>编码结果</returns>
string encodeUnicode(string str)
{
Encoding encodingUTF = Encoding.BigEndianUnicode;
string strDestination = string.Empty;
byte[] encodedBytes = encodingUTF.GetBytes(str);
for (int i = 0; i < encodedBytes.Length; i++)
{
strDestination += BitConverter.ToString(encodedBytes, i, 1);
}
//下面一句加上后，编码包括长度，如“中文”编码为044E2D6587；
//strDestination = String.Format("{0:X2}{1}", strDestination.Length / 2, strDestination);
return strDestination;
}
/// <summary>
/// 对UCS2编码进行解码
/// </summary>
/// <param name="s">解码字符串</param>
/// <returns>解码结果</returns>
public string decodingUnicode(string s)
{
byte[] buf = new byte[s.Length];
for (int i = 0; i < s.Length; i += 4)
{
buf[i / 2] = byte.Parse(s.Substring(2 + i, 2), System.Globalization.NumberStyles.AllowHexSpecifier);
buf[i / 2 + 1] = byte.Parse(s.Substring(i, 2), System.Globalization.NumberStyles.AllowHexSpecifier);
}
return Encoding.Unicode.GetString(buf).Trim();
}