/// <summary>
/// 3DES解密24位自定义填充类型
/// </summary>
/// <param name="decryptSource">解密的数据源</param>
/// <param name="decryptKey">解密的密匙</param>
/// <param name="decryptIV">解密的矢量</param>
/// <param name="paddingMode">填充类型</param>
/// <returns>解密串</returns>
public static string TripleDESDecrypt(string decryptSource, string decryptKey, string decryptIV, System.Security.Cryptography.PaddingMode paddingMode)
{
return(TripleDESDecrypt(decryptSource, decryptKey, decryptIV, paddingMode, 24, "ToBase64"));
}
/// <summary>
/// 3DES解密
/// </summary>
/// <param name="decryptSource">解密的数据源</param>
/// <param name="decryptKey">解密的密匙</param>
/// <param name="decryptIV">解密的矢量</param>
/// <param name="paddingMode">填充模式</param>
/// <param name="byteNum">字节</param>
/// <param name="outType">解密字节形式ToHex16,ToBase64</param>
/// <returns>解密串</returns>
public static string TripleDESDecrypt(string decryptSource, string decryptKey, string decryptIV, System.Security.Cryptography.PaddingMode paddingMode, int byteNum, string outType, System.Security.Cryptography.CipherMode mode = System.Security.Cryptography.CipherMode.ECB)
{
//构造一个对称算法
SymmetricAlgorithm mCSP = new TripleDESCryptoServiceProvider();
ICryptoTransform ct;
MemoryStream ms;
CryptoStream cs;
byte[] byt = new byte[0];
if (string.IsNullOrEmpty(outType))
{
return("解密配置不能空");
}
if ((decryptKey.Trim().Length) != byteNum)
{
return("解密字节错误");
}
byte[] Key = System.Text.Encoding.Default.GetBytes(decryptKey.Trim());
mCSP.Key = Key;
//默认矢量
if (String.IsNullOrEmpty(decryptIV))
{
decryptIV = decryptKey.Substring(0, 8);
}
mCSP.IV = System.Text.Encoding.Default.GetBytes(decryptIV);
mCSP.Mode = mode;
mCSP.Padding = paddingMode;
ct = mCSP.CreateDecryptor(mCSP.Key, mCSP.IV);
//输出16进制字符
if (outType == "ToHex16")
{
byt = ConvertHexToBytes(decryptSource);
}
//输出ToBase64字符
if (outType == "ToBase64")
{
byt = Convert.FromBase64String(decryptSource);
}
ms = new MemoryStream();
cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
cs.Write(byt, 0, byt.Length);
cs.FlushFinalBlock();
cs.Close();
return(Encoding.Default.GetString(ms.ToArray()).Replace("\0", "").Trim());
}
/// <summary>
/// 3DES加密自定义字节位填充类型
/// </summary>
/// <param name="encryptSource">加密的数据源</param>
/// <param name="encryptKey">加密的密匙</param>
/// <param name="encryptIV">加密的矢量</param>
/// <param name="paddingMode">自定义填充类型</param>
/// <param name="byteNum">自定义字节数</param>
/// <param name="outType">输出字节形式ToHex16,ToBase64</param>
/// <returns>加密串</returns>
public static string TripleDESEncrypt(string encryptSource, string encryptKey, string encryptIV, System.Security.Cryptography.PaddingMode paddingMode, int byteNum, string outType, System.Security.Cryptography.CipherMode mode = System.Security.Cryptography.CipherMode.ECB)
{
//构造一个对称算法
SymmetricAlgorithm mCSP = new TripleDESCryptoServiceProvider();
ICryptoTransform ct;
MemoryStream ms;
CryptoStream cs;
byte[] byt;
if (string.IsNullOrEmpty(outType))
{
return("输出配置不能空");
}
if ((encryptKey.Trim().Length) != byteNum)
{
return("加密字节");
}
byte[] Key = System.Text.Encoding.Default.GetBytes(encryptKey);
mCSP.Key = Key;
//默认矢量
if (String.IsNullOrEmpty(encryptIV))
{
encryptIV = encryptKey.Substring(0, 8);
}
mCSP.IV = System.Text.Encoding.Default.GetBytes(encryptIV);
//指定加密的运算模式
mCSP.Mode = mode;
//获取或设置加密算法的填充模式
mCSP.Padding = paddingMode;
ct = mCSP.CreateEncryptor(mCSP.Key, mCSP.IV);
byt = System.Text.Encoding.Default.GetBytes(encryptSource.Trim());
ms = new MemoryStream();
cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
cs.Write(byt, 0, byt.Length);
cs.FlushFinalBlock();
cs.Close();
string mToString = string.Empty;
//输出16进制字符
if (outType == "ToHex16")
{
mToString = ToHexString(ms.ToArray());
}
//输出ToBase64字符
if (outType == "ToBase64")
{
mToString = Convert.ToBase64String(ms.ToArray()).ToString().Replace("\0", "");
}
return(mToString);
}
