using System;
using System.Text;
using System.Globalization;
using System.Security.Cryptography;
using System.Windows.Forms;
namespace Jh.Encrypts
{
public class JhEncrypt
{
///
1<summary>
2/// 构造方法
3/// </summary>
public JhEncrypt()
{
}
///
1<summary>
2/// 使用缺省密钥字符串加密
3/// </summary>
///
1<param name="original"/>
明文
///
1<returns>密文</returns>
public static string Encrypt(string original)
{
return Encrypt(original,"JASONHEUNG");
}
///
1<summary>
2/// 使用缺省密钥解密
3/// </summary>
///
1<param name="original"/>
密文
///
1<returns>明文</returns>
public static string Decrypt(string original)
{
return Decrypt(original,"JASONHEUNG",System.Text.Encoding.Default);
}
///
1<summary>
2/// 使用给定密钥解密
3/// </summary>
///
1<param name="original"/>
密文
///
1<param name="key"/>
密钥
///
1<returns>明文</returns>
public static string Decrypt(string original, string key)
{
return Decrypt(original,key,System.Text.Encoding.Default);
}
///
1<summary>
2/// 使用缺省密钥解密,返回指定编码方式明文
3/// </summary>
///
1<param name="original"/>
密文
///
1<param name="encoding"/>
编码方式
///
1<returns>明文</returns>
public static string Decrypt(string original,Encoding encoding)
{
return Decrypt(original,"JASONHEUNG",encoding);
}
///
1<summary>
2/// 使用给定密钥加密
3/// </summary>
///
1<param name="original"/>
原始文字
///
1<param name="key"/>
密钥
///
1<param name="encoding"/>
字符编码方案
///
1<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));
}
///
1<summary>
2/// 使用给定密钥解密
3/// </summary>
///
1<param name="encrypted"/>
密文
///
1<param name="key"/>
密钥
///
1<param name="encoding"/>
字符编码方案
///
1<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));
}
///
1<summary>
2/// 生成MD5摘要
3/// </summary>
///
1<param name="original"/>
数据源
///
1<returns>摘要</returns>
public static byte[] MakeMD5(byte[] original)
{
MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
byte[] keyhash = hashmd5.ComputeHash(original);
hashmd5 = null;
return keyhash;
}
///
1<summary>
2/// 使用给定密钥加密
3/// </summary>
///
1<param name="original"/>
明文
///
1<param name="key"/>
密钥
///
1<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, 0, original.Length);
}
///
1<summary>
2/// 使用给定密钥解密数据
3/// </summary>
///
1<param name="encrypted"/>
密文
///
1<param name="key"/>
密钥
///
1<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, 0, encrypted.Length);
}
///
1<summary>
2/// 使用给定密钥加密
3/// </summary>
///
1<param name="original"/>
原始数据
///
1<param name="key"/>
密钥
///
1<returns>密文</returns>
public static byte[] Encrypt(byte[] original)
{
byte[] key = System.Text.Encoding.Default.GetBytes("JASONHEUNG");
return Encrypt(original,key);
}
///
1<summary>
2/// 使用缺省密钥解密数据
3/// </summary>
///
1<param name="encrypted"/>
密文
///
1<param name="key"/>
密钥
///
1<returns>明文</returns>
public static byte[] Decrypt(byte[] encrypted)
{
byte[] key = System.Text.Encoding.Default.GetBytes("JASONHEUNG");
return Decrypt(encrypted,key);
}
}
}