public void Test_Decrypt()
{
var result = AESCryptor.Decrypt("JWm0M2KzKwxe8ylzkfujgQkyEq+kG1ZVirENQqCl8BI=", Key);
Output.WriteLine(result);
Assert.Equal("测试一下内容先", result);
}
public void Test_DecryptIv()
{
string iv = InitIv(16);
Output.WriteLine(iv);
var result = AESCryptor.Decrypt("JWm0M2KzKwxe8ylzkfujgV8i5XUnUaHOpY7MaND0Z3g=", Key, Encoding.UTF8, iv, 256, 128, CipherMode.CBC,
PaddingMode.PKCS7);
Output.WriteLine(result);
Assert.Equal("测试一下内容先", result);
}
public static byte[] DecryptToBytes(string encryptedData)
{
if (encryptedData == null)
{
return(null);
}
if (string.IsNullOrEmpty(encryptedData))
{
return(new byte[0]);
}
string[] values = encryptedData.Split(Utility.SEPARRAY, StringSplitOptions.None);
if (values.Length != 3)
{
return(null);
}
int keyIndex;
string beEncrypted = values[1];
string nonce = values[2];
if (!int.TryParse(values[0], out keyIndex))
{
return(null);
}
byte[] encrypted = StringTools.FromBase64String(beEncrypted);
byte[] binary;
AESCryptor.Decrypt(ref keyIndex, ref encrypted, out binary);
if (binary == null)
{
return(null);
}
byte[] binaryNonce = Encoding.UTF8.GetBytes(nonce);
byte[] data;
byte[] checkNonceBinary;
Utility.SeparateBytes(binary, binaryNonce.Length, out data, out checkNonceBinary);
if (!Utility.IsBytesSame(binaryNonce, checkNonceBinary))
{
return(null);
}
return(data);
}
public static string Decrypt(string encryptedData)
{
if (encryptedData == null)
{
return(null);
}
if (string.IsNullOrEmpty(encryptedData))
{
return(string.Empty);
}
string[] values = encryptedData.Split(Utility.SEPARRAY, StringSplitOptions.None);
if (values.Length != 3)
{
return(encryptedData);
}
int keyIndex;
string beEncrypted = values[1];
string nonce = values[2];
if (!int.TryParse(values[0], out keyIndex))
{
return(encryptedData);
}
byte[] encrypted = StringTools.FromBase64String(beEncrypted);
byte[] binary;
AESCryptor.Decrypt(ref keyIndex, ref encrypted, out binary);
if (binary == null)
{
return(encryptedData);
}
string data = Encoding.UTF8.GetString(binary);
string checkNonce = data.Substring(data.Length - NONCE_LENGTH);
if (checkNonce != nonce)
{
return(encryptedData);
}
return(data.Substring(0, data.Length - NONCE_LENGTH));
}
/// <summary>
/// New GTA V GameSave
/// </summary>
/// <param name="xIn">Gamesave stream</param>
/// <param name="key">Encryption key</param>
public V(Stream xIn, byte[] key, bool dec)
{
this.key = key;
MemoryStream xMem;
byte[] xInBuf = StreamUtils.ReadBytes(xIn, (int)xIn.Length);
if (dec)
{
byte[] deced = AESCryptor.Decrypt(xInBuf, key);
xMem = new MemoryStream(deced);
}
else
{
xMem = new MemoryStream(xInBuf);
}
this.Body = new Body(xMem);
}
public static byte[] BinaryDecrypt(byte[] encrypted, int you_know_what_is_this_key = 0)
{
if (encrypted == null)
{
return(null);
}
if (encrypted.Length == 0)
{
return(encrypted);
}
int keyIndex = you_know_what_is_this_key;
byte[] data;
AESCryptor.Decrypt(ref keyIndex, ref encrypted, out data);
return(data);
}
