private Entropy()
{
try
{
random = SecureRandom.getInstance("SHA1PRNG");
}
catch (NoSuchAlgorithmException)
{
random = new SecureRandom();
return;
}
}
/// <summary>
/// AES解密
/// </summary>
/// <param name="data"></param>
/// <param name="key"></param>
/// <returns></returns>
public static string DeAES(byte[] content, string key)
{
KeyGenerator kgen = KeyGenerator.getInstance("AES");
SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
secureRandom.setSeed(Encoding.ASCII.GetBytes(key));
kgen.init(128, secureRandom);
SecretKey secretKey = kgen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
using (AesCryptoServiceProvider aesProvider = new AesCryptoServiceProvider())
{
aesProvider.Key = enCodeFormat;
aesProvider.Mode = CipherMode.ECB;
aesProvider.Padding = PaddingMode.PKCS7;
using (ICryptoTransform cryptoTransform = aesProvider.CreateDecryptor())
{
byte[] inputBuffers = content;
byte[] results = cryptoTransform.TransformFinalBlock(inputBuffers, 0, inputBuffers.Length);
aesProvider.Clear();
return Encoding.UTF8.GetString(results);
}
}
}