AES DES MD5 加密

2013-11-18 15:19:17

 

AES 加密解密


/// <summary>
/// AES 加密解密
/// </summary>
public class AES
{
//默认**向量
private static byte[] Keys = { 0x41, 0x72, 0x65, 0x79, 0x6F, 0x75, 0x6D, 0x79, 0x53, 0x6E, 0x6F, 0x77, 0x6D, 0x61, 0x6E, 0x3F };


//**
public static string KeyValue = "12345678901234567890123456789012";


/// <summary>
/// AES加密
/// </summary>
/// <param name="encryptString">待加密的字符串</param>
/// <param name="encryptKey">加***,要求为32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 EncryptAES(string encryptString, string encryptKey)
{
try
{
byte[] inputData = UTF8Encoding.UTF8.GetBytes(encryptString);


RijndaelManaged rijndaelProvider = new RijndaelManaged();
rijndaelProvider.Key = UTF8Encoding.UTF8.GetBytes(encryptKey.Substring(0, 32));
rijndaelProvider.IV = Keys;
ICryptoTransform rijndaelEncrypt = rijndaelProvider.CreateEncryptor();


byte[] encryptedData = rijndaelEncrypt.TransformFinalBlock(inputData, 0, inputData.Length);


return Convert.ToBase64String(encryptedData);
}
catch
{
return "Encrypt Failed!";
}
}


/// <summary>
/// AES解密
/// </summary>
/// <param name="decryptString">待解密的字符串</param>
/// <param name="decryptKey">解***,要求为32位,和加***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 DecryptAES(string decryptString, string decryptKey)
{
try
{
byte[] inputData = Convert.FromBase64String(decryptString);


RijndaelManaged rijndaelProvider = new RijndaelManaged();
rijndaelProvider.Key = UTF8Encoding.UTF8.GetBytes(decryptKey.Substring(0, 32));
rijndaelProvider.IV = Keys;
ICryptoTransform rijndaelDecrypt = rijndaelProvider.CreateDecryptor();


byte[] decryptedData = rijndaelDecrypt.TransformFinalBlock(inputData, 0, inputData.Length);
return UTF8Encoding.UTF8.GetString(decryptedData);
}
catch
{
return "Decrypt Failed!"; 
}
}
}
DES 加密解密


/// <summary>
/// DES 加密解密
/// </summary>
public class DES
{
//默认**向量
private static byte[] Keys = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };


//**
public static string KeyValue = "19840117";


/// <summary>
/// DES加密
/// </summary>
/// <param name="encryptString">待加密的字符串</param>
/// <param name="encryptKey">加***,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 EncryptDES(string encryptString, string encryptKey)
{
try
{
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());
}
catch
{
return "Encrypt Failed!";
}
}


/// <summary>
/// DES解密
/// </summary>
/// <param name="decryptString">待解密的字符串</param>
/// <param name="decryptKey">解***,要求为8位,和加***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 DecryptDES(string decryptString, string decryptKey)
{
try
{
byte[] rgbKey = Encoding.UTF8.GetBytes(decryptKey);
byte[] rgbIV = Keys;
byte[] inputByteArray = Convert.FromBase64String(decryptString);
DESCryptoServiceProvider DCSP = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, 0, inputByteArray.Length);
cStream.FlushFinalBlock();
return Encoding.UTF8.GetString(mStream.ToArray());
}
catch
{
return "Decrypt Failed!"; 
}
}
}


哈希加密包括MD5,SHA1加密


/// <summary>
/// 哈希加密包括MD5,SHA1加密
/// </summary>
public class Hash
{
/// <summary>
/// MD5函数
/// </summary>
/// <param name="str">原始字符串</param>
/// <returns>MD5结果</returns>
public static string MD5(string str)
{
MD5 md5 = new MD5CryptoServiceProvider();
byte[] data = System.Text.Encoding.Default.GetBytes(str);
byte[] result = md5.ComputeHash(data);
string ret = "";
for (int i = 0; i < result.Length; i++)
ret += result[i].ToString("x").PadLeft(2, '0');
return ret;
}


/// <summary>
/// SHA1函数
/// </summary>
/// <param name="str">原始字符串</param>
/// <returns>SHA1结果</returns>
public static string SHA1(string str)
{
SHA1 sha1 = new SHA1CryptoServiceProvider();
byte[] data = System.Text.Encoding.Default.GetBytes(str);
byte[] result = sha1.ComputeHash(data);
return Convert.ToBase64String(result); //返回长度为64字节的字符串
}
}