using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls; using System.Security.Cryptography;
using System.Text; public partial class aes : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
} /// <summary>
/// AES 加密
/// </summary>
/// <param name="data"></param>
/// <param name="sKey"></param>
/// <returns></returns>
protected string Encrypt(string data, string sKey)
{
try
{
RijndaelManaged aes = new RijndaelManaged();
byte[] bData = UTF8Encoding.UTF8.GetBytes(data);
aes.Key = UTF8Encoding.UTF8.GetBytes(sKey);
aes.IV = UTF8Encoding.UTF8.GetBytes(sKey);
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.PKCS7; ICryptoTransform iCryptoTransform = aes.CreateEncryptor();
byte[] bResult = iCryptoTransform.TransformFinalBlock(bData, 0, bData.Length); // return Convert.ToBase64String(bResult); //返回base64加密;
return ByteToHex(bResult); //返回十六进制数据;
}
catch
{
throw;
}
}
/// <summary>
/// AES 解密
/// </summary>
/// <param name="data"></param>
/// <param name="sKey"></param>
/// <returns></returns>
protected string Decrypt(string data, string sKey)
{
try
{
RijndaelManaged aes = new RijndaelManaged();
//byte[] bData = Convert.FromBase64String(data); //解密base64;
byte[] bData = HexToByte(data); //16进制to byte[];
aes.Key = UTF8Encoding.UTF8.GetBytes(sKey);
aes.IV = UTF8Encoding.UTF8.GetBytes(sKey);
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.PKCS7; ICryptoTransform iCryptoTransform = aes.CreateDecryptor();
byte[] bResult = iCryptoTransform.TransformFinalBlock(bData, 0, bData.Length);
return Encoding.UTF8.GetString(bResult);
}
catch
{
throw;
}
}
/// <summary>
/// AES 字节 转换成十六进制字符串字节数组
/// </summary>
/// <param name="msg"></param>
/// <returns></returns>
private byte[] HexToByte(string msg)
{
//remove any spaces from the string
msg = msg.Replace(" ", "");
//create a byte array the length of the
//divided by 2 (Hex is 2 characters in length)
byte[] comBuffer = new byte[msg.Length / 2];
//loop through the length of the provided string
for (int i = 0; i < msg.Length; i += 2)
//convert each set of 2 characters to a byte
//and add to the array
comBuffer[i / 2] = (byte)Convert.ToByte(msg.Substring(i, 2), 16);
//return the array
return comBuffer;
}
/// <summary>
/// AES 十六进制字符串字节数组 转换 字节
/// </summary>
/// <param name="comByte"></param>
/// <returns></returns>
private string ByteToHex(byte[] comByte)
{
//create a new StringBuilder object
StringBuilder builder = new StringBuilder(comByte.Length * 3);
//loop through each byte in the array
foreach (byte data in comByte)
//convert the byte to a string and add to the stringbuilder
builder.Append(Convert.ToString(data, 16).PadLeft(2, '0').PadRight(3, ' '));
//return the converted value
return builder.ToString().ToUpper().Replace(" ", "");
}
/// <summary>
/// DES 加密算法
/// </summary>
/// <param name="message"></param>
/// <param name="key"></param>
/// <returns></returns>
protected string DESEncrypt(string message, string key)
{
DES des = new DESCryptoServiceProvider();
des.Mode = CipherMode.ECB;
des.Key = Encoding.UTF8.GetBytes(key);
des.IV = Encoding.UTF8.GetBytes(key); byte[] bytes = Encoding.UTF8.GetBytes(message);
byte[] resultBytes = des.CreateEncryptor().TransformFinalBlock(bytes, 0, bytes.Length); return Convert.ToBase64String(resultBytes); //密文以base64返回;(可根据实际需要返回16进制数据;)
}
/// <summary>
/// DES 解密算法
/// </summary>
/// <param name="message"></param>
/// <param name="key"></param>
/// <returns></returns>
protected string DESDecrypt(string message, string key)
{
DES des = new DESCryptoServiceProvider();
des.Mode = CipherMode.ECB;
des.Key = Encoding.UTF8.GetBytes(key);
des.IV = Encoding.UTF8.GetBytes(key); byte[] bytes = Convert.FromBase64String(message);
byte[] resultBytes = des.CreateDecryptor().TransformFinalBlock(bytes, 0, bytes.Length); return Encoding.UTF8.GetString(resultBytes);
}
/// <summary>
/// AES 加密测试
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Button1_Click(object sender, EventArgs e)
{
string data = this.TextBox1.Text.Trim(); //数据明文;
string sKey = "gfgfgfgfgfgfgfgf"; //注意密钥(Key)的长度;本例是16个字符(128位);
string Encrypted = Encrypt(data, sKey);
string Decrypted = Decrypt(Encrypted, sKey); Response.Write("AES加密码结果：" + Encrypted);
Response.Write("<br>");
Response.Write("AES解密码结果：" + Decrypted);
}
/// <summary>
/// DES 加密测试
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Button2_Click(object sender, EventArgs e)
{
string data = this.TextBox1.Text.Trim(); //数据明文;
string sKey = "56856854"; //密钥(Key)的长度;
string Encrypted = DESEncrypt(data, sKey);
string Decrypted = DESDecrypt(Encrypted, sKey);
Response.Write("DES加密码结果：" + Encrypted);
Response.Write("<br>");
Response.Write("DES解密码结果：" + Decrypted);
}
}
|