當我們要發佈的軟體內有某些資料有敏感資訊時，用此物件進行簡單的加密解密來使用即可。
// 用靜態的方式共用物件
public static class AesTools
{
// 密鑰和iv值建議16位數以上
private static string Aeskey = "1234567890654321";
private static string Aesiv = "1234567890654321";
// 加密
public static string Encrypt(string plainText)
{
using (Aes aesAlg = Aes.Create())
{
aesAlg.Key = Encoding.UTF8.GetBytes(Aeskey);
aesAlg.IV = Encoding.UTF8.GetBytes(Aesiv);
ICryptoTransform encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);
using (MemoryStream msEncrypt = new MemoryStream())
{
using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
{
using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
{
swEncrypt.Write(plainText);
}
}
return Convert.ToBase64String(msEncrypt.ToArray());
}
}
}
// 解密
public static string Decrypt(string cipherText)
{
using (Aes aesAlg = Aes.Create())
{
aesAlg.Key = Encoding.UTF8.GetBytes(Aeskey);
aesAlg.IV = Encoding.UTF8.GetBytes(Aesiv);
ICryptoTransform decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);
using (MemoryStream msDecrypt = new MemoryStream(Convert.FromBase64String(cipherText)))
{
using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
{
using (StreamReader srDecrypt = new StreamReader(csDecrypt))
{
return srDecrypt.ReadToEnd();
}
}
}
}
}
// 自訂Key iv加密
public static string EncryptCus(string plainText, string key, string iv)
{
using (Aes aesAlg = Aes.Create())
{
aesAlg.Key = Encoding.UTF8.GetBytes(key);
aesAlg.IV = Encoding.UTF8.GetBytes(iv);
ICryptoTransform encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);
using (MemoryStream msEncrypt = new MemoryStream())
{
using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
{
using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
{
swEncrypt.Write(plainText);
}
}
return Convert.ToBase64String(msEncrypt.ToArray());
}
}
}
// 自訂Key iv解密
public static string DecryptCus(string cipherText, string key, string iv)
{
using (Aes aesAlg = Aes.Create())
{
aesAlg.Key = Encoding.UTF8.GetBytes(key);
aesAlg.IV = Encoding.UTF8.GetBytes(iv);
ICryptoTransform decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);
using (MemoryStream msDecrypt = new MemoryStream(Convert.FromBase64String(cipherText)))
{
using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
{
using (StreamReader srDecrypt = new StreamReader(csDecrypt))
{
return srDecrypt.ReadToEnd();
}
}
}
}
}
}