ASP.NET AES、DES加密
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2024-03-13 23:00:04
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首先，引入
using System.Security.Cryptography;
编写代码
/// <summary>
/// AES、DES加解密工具类
/// </summary>
public class EncryptUtil
{
private static readonly string AESKEY = "GHYU80DV3465QSFG";//16或者32位
//private static readonly string DESKEY = ConfigurationManager.AppSettings["DESKEY"].Trim();
private static readonly string DESKEY = "PORG56JK";//8位
/// <summary>
/// AES加密
/// </summary>
/// <param name="data">要加密的字符串</param>
/// <returns>加密后的字符串</returns>
public static string EncryptAES(string data)
{
try
{
RijndaelManaged aes = new RijndaelManaged();
byte[] bData = UTF8Encoding.UTF8.GetBytes(data);
aes.Key = UTF8Encoding.UTF8.GetBytes(AESKEY);
aes.IV = UTF8Encoding.UTF8.GetBytes(AESKEY);
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加密
/// </summary>
/// <param name="data">要加密的字符串</param>
/// <param name="sKey">**串（16位或32位）</param>
/// <returns>加密后的字符串</returns>
public static string EncryptAES(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">要解密的字符串</param>
/// <returns>解密后的字符串</returns>
public static string DecryptAES(string data)
{
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(AESKEY);
aes.IV = UTF8Encoding.UTF8.GetBytes(AESKEY);
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解密
/// </summary>
/// <param name="data">要解密的字符串</param>
/// <param name="sKey">**串（16位或32位字符串）</param>
/// <returns>解密后的字符串</returns>
public static string DecryptAES(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>
/// DES加密
/// </summary>
/// <param name="data">要加密的字符串</param>
/// <returns>加密后的字符串</returns>
public static string EncryptDES(string data)
{
DES des = new DESCryptoServiceProvider();
des.Mode = CipherMode.ECB;
des.Key = Encoding.UTF8.GetBytes(DESKEY);
des.IV = Encoding.UTF8.GetBytes(DESKEY);
byte[] bytes = Encoding.UTF8.GetBytes(data);
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;)
return ByteToHex(resultBytes);//十六位
}
/// <summary>
/// DES加密
/// </summary>
/// <param name="data">要加密的字符串</param>
/// <param name="key">**串（8位字符串）</param>
/// <returns>加密后的字符串</returns>
public static string EncryptDES(string data, 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(data);
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;)
return ByteToHex(resultBytes);//十六位
}
/// <summary>
/// DES解密
/// </summary>
/// <param name="data">要解密的字符串</param>
/// <param name="key">**串（8位字符串）</param>
/// <returns>解密后的字符串</returns>
public static string DecryptDES(string data)
{
DES des = new DESCryptoServiceProvider();
des.Mode = CipherMode.ECB;
des.Key = Encoding.UTF8.GetBytes(DESKEY);
des.IV = Encoding.UTF8.GetBytes(DESKEY);
//byte[] bytes = Convert.FromBase64String(data);
byte[] bytes = HexToByte(data);
byte[] resultBytes = des.CreateDecryptor().TransformFinalBlock(bytes, 0, bytes.Length);
return Encoding.UTF8.GetString(resultBytes);
}
/// <summary>
/// DES解密
/// </summary>
/// <param name="data">要解密的字符串</param>
/// <param name="key">**串（8位字符串）</param>
/// <returns>解密后的字符串</returns>
public static string DecryptDES(string data, 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(data);
byte[] bytes = HexToByte(data);
byte[] resultBytes = des.CreateDecryptor().TransformFinalBlock(bytes, 0, bytes.Length);
return Encoding.UTF8.GetString(resultBytes);
}
// method to convert hex string into a byte array
private static byte[] HexToByte(string data)
{
data = data.Replace(" ", "");
byte[] comBuffer = new byte[data.Length / 2];
for (int i = 0; i < data.Length; i += 2)
comBuffer[i / 2] = (byte)Convert.ToByte(data.Substring(i, 2), 16);
return comBuffer;
}
// method to convert a byte array into a hex string
private static string ByteToHex(byte[] comByte)
{
StringBuilder builder = new StringBuilder(comByte.Length * 3);
foreach (byte data in comByte)
builder.Append(Convert.ToString(data, 16).PadLeft(2, '0').PadRight(3, ' '));
return builder.ToString().ToUpper().Replace(" ", "");
}
}
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