いくつかの一般的な暗号化方法の実現
6426 ワード
いくつかの一般的な暗号化方法の実現
1.ACSIIコード暗号化
//ACSII
private static string ACSIIPWd(string rpwd)
{
string Ret;
byte[] array = System.Text.Encoding.ASCII.GetBytes(rpwd);
byte[] byteArray = new byte[array.Length];
for (int i = 0; i < array.Length; i++)
{
int asciicode = (int)(array[i]);
asciicode = asciicode + 1;
byteArray[i] = (byte)asciicode;
}
System.Text.ASCIIEncoding asciiEncoding = new System.Text.ASCIIEncoding();
string strCharacter = asciiEncoding.GetString(byteArray);
Ret = strCharacter;
return Ret;
}
2.MD 5暗号化
//MD5
private static string MD5PWd(string rpwd)
{
string Ret;
MD5 md5 = new MD5CryptoServiceProvider();
byte[] palindata = Encoding.Default.GetBytes(rpwd);//
byte[] encryptdata = md5.ComputeHash(palindata);//
Ret = Convert.ToBase64String(encryptdata);
return Ret;
}
3.RSA暗号化
//RSA
private static string RSAPWD1(string myKeyContainerName)
{
string ret = "";
CspParameters cp = new CspParameters();
cp.KeyContainerName = myKeyContainerName;
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(cp);
ret = rsa.ToXmlString(true);
Console.WriteLine("Key is :
" + rsa.ToXmlString(true));
return ret;
}
4.DES暗号化
//DES
private static string DESPWD(string ciphertext)
{
string desPWD = "";
byte[] buffer;
DESCryptoServiceProvider DesCSP = new DESCryptoServiceProvider();
MemoryStream ms = new MemoryStream();//
CryptoStream cryStream = new CryptoStream(ms, DesCSP.CreateEncryptor(), CryptoStreamMode.Write);//
StreamWriter sw = new StreamWriter(cryStream);
sw.WriteLine(ciphertext);//
sw.Close();
cryStream.Close();
buffer = ms.ToArray();//
desPWD = Convert.ToBase64String(buffer);//
return desPWD;
}