1、加密
public class Encrypts
{
/// <summary>
/// 构造方法
/// </summary>
public Encrypts()
{
}
/// <summary>
/// 使用缺省密钥字符串加密
/// </summary>
/// <param name= "original "> 明文 </param>
/// <returns> 密文 </returns>
public static string Encrypt(string original)
{
return Encrypt(original, "haha");
}
/// <summary>
/// 使用缺省密钥解密
/// </summary>
/// <param name= "original "> 密文 </param>
/// <returns> 明文 </returns>
public static string Decrypt(string original)
{
try
{
return Decrypt(original, "haha", System.Text.Encoding.Default);
}
catch
{
return ("");
}
}
/// <summary>
/// 使用给定密钥解密
/// </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>
/// 使用缺省密钥解密,返回指定编码方式明文
/// </summary>
/// <param name= "original "> 密文 </param>
/// <param name= "encoding "> 编码方式 </param>
/// <returns> 明文 </returns>
public static string Decrypt(string original, Encoding encoding)
{
return Decrypt(original, "haha", encoding);
}
/// <summary>
/// 使用给定密钥加密
/// </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>
/// 使用给定密钥解密
/// </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));
}
/// <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, 0, 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, 0, encrypted.Length);
}
/// <summary>
/// 使用给定密钥加密
/// </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("haha");
return Encrypt(original, key);
}
/// <summary>
/// 使用缺省密钥解密数据
/// </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 = System.Text.Encoding.Default.GetBytes("haha");
return Decrypt(encrypted, key);
}
}
2、解密
public class EncryDecry
{
#region 加密
/// <summary>
/// 加密
/// </summary>
/// <param name="data">明文</param>
/// <param name="Key_64">Key_64 长度8位</param>
/// <param name="Iv_64">Key_64 长度8位</param>
/// <returns></returns>
public static string Encrypt(string data, string Key_64, string Iv_64)
{
string KEY_64 = Key_64;// "12345678";
string IV_64 = Iv_64;// "12345678";
try
{
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();
sw.Flush();
return Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length);
}
catch (Exception x)
{
return x.Message;
}
}
#endregion
#region 解密
/// <summary>
/// 解密
/// </summary>
/// <param name="data">密文</param>
/// <param name="Key_64">Key_64 长度8位</param>
/// <param name="Iv_64">Key_64 长度8位</param>
/// <returns></returns>
public static string Decrypt(string data, string Key_64, string Iv_64)
{
string KEY_64 = Key_64;// "12345678";密钥
string IV_64 = Iv_64;// "12345678"; 向量
try
{
byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);
byte[] byEnc;
byEnc = Convert.FromBase64String(data); //把需要解密的字符串转为8位无符号数组
DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
MemoryStream ms = new MemoryStream(byEnc);
CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateDecryptor(byKey, byIV), CryptoStreamMode.Read);
StreamReader sr = new StreamReader(cst);
return sr.ReadToEnd();
}
catch (Exception x)
{
return x.Message;
}
}
#endregion
}
