const string
DESKey = "AQWSEDRF";
const string DESIV
= "HGFEDCBA";
public static string
DESDecrypt(string stringToDecrypt)
{
byte[] key;
byte[] IV;
byte[] inputByteArray;
key = Convert2ByteArray(DESKey);
IV = Convert2ByteArray(DESIV);
int len = stringToDecrypt.Length;
inputByteArray = Convert.FromBase64String(stringToDecrypt);
DESCryptoServiceProvider des
= new DESCryptoServiceProvider();
MemoryStream ms =
new MemoryStream();
CryptoStream cs =
new CryptoStream(ms, des.CreateDecryptor(key, IV),
CryptoStreamMode.Write);
try
{
cs.Write(inputByteArray,
0, inputByteArray.Length);
cs.FlushFinalBlock();
Encoding encoding
= Encoding.UTF8;
return encoding.GetString(ms.ToArray());
}
catch (System.Exception ex)
{
throw ex;
}
finally
{
ms.Close();
cs.Close();
}
}
public static string
DESEncrypt(string stringToEncrypt)
{
byte[] key;
byte[] IV;
byte[] inputByteArray;
key = Convert2ByteArray(DESKey);
IV = Convert2ByteArray(DESIV);
inputByteArray = Encoding.UTF8.GetBytes(stringToEncrypt);
DESCryptoServiceProvider des
= new DESCryptoServiceProvider();
MemoryStream ms =
new MemoryStream();
CryptoStream cs =
new CryptoStream(ms, des.CreateEncryptor(key, IV),
CryptoStreamMode.Write);
try
{
cs.Write(inputByteArray,
0, inputByteArray.Length);
cs.FlushFinalBlock();
return
Convert.ToBase64String(ms.ToArray());
}
catch (System.Exception ex)
{
throw ex;
}
finally
{
ms.Close();
cs.Close();
}
}
static byte[]
Convert2ByteArray(string strInput)
{
int intCounter;
char[] arrChar;
arrChar = strInput.ToCharArray();
byte[] arrByte
= new byte[arrChar.Length];
for (intCounter
= 0; intCounter
< arrByte.Length; intCounter++)
arrByte[intCounter]
= Convert.ToByte(arrChar[intCounter]);
return arrByte;
}
ฟอรัมที่เกี่ยวข้อง
http://forums.asp.net/p/1238171/2258386.aspx#2258386
Supa Sethasiripong [MSFT]
MSDN Community Support | Feedback to us
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