/// <summary>
/// Executes a selftest
/// </summary>
/// <remarks>
/// Call this method to make sure that the instance is able to produce
/// valid output according to the specification.
/// </remarks>
/// <returns>
/// true: selftest passed / false: selftest failed
/// </returns>
public static bool RunSelfTest()
{
uint unHi, unLo;
BlowfishECB bfe;
unHi = TEST_VECTOR_PLAIN[0];
unLo = TEST_VECTOR_PLAIN[1];
bfe = new BlowfishECB(TEST_KEY, 0, TEST_KEY.Length);
bfe.EncryptBlock(unHi, unLo, out unHi, out unLo);
if ((TEST_VECTOR_CIPHER[0] != unHi) ||
(TEST_VECTOR_CIPHER[1] != unLo))
{
return(false);
}
bfe.DecryptBlock(unHi, unLo, out unHi, out unLo);
if ((TEST_VECTOR_PLAIN[0] != unHi) ||
(TEST_VECTOR_PLAIN[1] != unLo))
{
return(false);
}
return(true);
}
// notice that return byte[] size must be multiple of block size
private static byte[] decryptBytes(BlowfishECB blowFish, byte[] data)
{
if (data.Length % BlowfishECB.BLOCK_SIZE > 0)
{
throw new Exception("cannot decrypt, data not in multiple of block size");
}
byte[] decrypted_data = new byte[data.Length];
blowFish.Decrypt(data, 0, decrypted_data, 0, data.Length);
return(decrypted_data);
}
//////////////////////////////////////////////////////////////////////
/// <summary>
/// Returns an identical, non-shallow copy of the current instance.
/// This can be very useful if you need multiple instances all using
/// the same key, since the expensive cipher setup will be bypassed.
/// </summary>
/// <returns>
/// The new instance, which usually typecasted back.
/// </returns>
public object Clone()
{
BlowfishECB result;
result = new BlowfishECB();
result.m_pbox = (uint[])this.m_pbox.Clone();
result.m_sbox1 = (uint[])this.m_sbox1.Clone();
result.m_sbox2 = (uint[])this.m_sbox2.Clone();
result.m_sbox3 = (uint[])this.m_sbox3.Clone();
result.m_sbox4 = (uint[])this.m_sbox4.Clone();
result.m_block = (byte[])this.m_block.Clone();
result.m_nIsWeakKey = this.m_nIsWeakKey;
return(result);
}
// notice that return byte[] size must be multiple of block size
private static byte[] encryptBytes(BlowfishECB blowFish, byte[] data)
{
int l_block_size = BlowfishECB.BLOCK_SIZE;
int nMod = data.Length % l_block_size;
int nLen = (nMod == 0) ? data.Length : data.Length - nMod + l_block_size;
// console_WriteLine("mod/len = " + nMod + "/" + nLen);
byte[] encrypted_data = new byte[nLen];
blowFish.Encrypt(data, 0, encrypted_data, 0, data.Length - nMod);
if (nMod > 0)
{
byte[] last_data = new byte[l_block_size];
Array.Copy(data, data.Length - nMod, last_data, 0, nMod);
blowFish.Encrypt(last_data, 0, encrypted_data, data.Length - nMod, l_block_size);
}
return(encrypted_data);
}
private void InvokeMsg()
{
string fragmentMsg = string.Empty;
string revStr = string.Empty;
while (true)
{
try
{
Dictionary <string, byte[]> dic = new Dictionary <string, byte[]>();
if (MsgQueue.Count > 0 && MsgQueue.TryDequeue(out dic))
{
foreach (var key in dic.Keys)
{
byte[] arrRecMsg = new byte[1024 * 1024];
int length = int.Parse(key.Split('_')[1]);
arrRecMsg = dic[key];
if (arrRecMsg == null || arrRecMsg.Length == 0)
{
continue;
}
if (this.IsEncrypt)
{
byte[] arrRecMsgDecrypt = null;
if ((arrRecMsg.Length - 4) % BlowfishECB.BLOCK_SIZE == 0)
{
arrRecMsgDecrypt = BlowfishECB.decryptBytes(Key, arrRecMsg.Skip(4).ToArray());
}
else
{
//arrRecMsgDecrypt = BlowfishECB.decryptBytes(Key, arrRecMsg);
BlowFish b = new BlowFish(Key);
arrRecMsgDecrypt = b.Decrypt_ECB(arrRecMsg.Skip(4).ToArray());
}
revStr = System.Text.Encoding.UTF8.GetString(arrRecMsgDecrypt);
//Program.logger.LogInfo("Key：" + System.Text.Encoding.Default.GetString(Key));
//Program.logger.LogInfo("原始报文：" + System.Text.Encoding.Default.GetString(arrRecMsg));
}
else
{
revStr = System.Text.Encoding.UTF8.GetString(arrRecMsg.Skip(4).Take(length - 4).ToArray());
}
List <string> messages = new List <string>();
if (!string.IsNullOrEmpty(fragmentMsg) && revStr.IndexOf(messageStart) > 0 && revStr.IndexOf(messageEnd) > revStr.IndexOf(messageStart))
{
int indexEnd = revStr.IndexOf(messageEnd);
int indexStart = revStr.IndexOf(messageStart);
revStr = fragmentMsg + revStr.Substring(indexStart);
fragmentMsg = string.Empty;
}
#region 消息截取，获取格式正常的消息
while (revStr.IndexOf(messageStart) > -1)
{
int indexEnd = revStr.IndexOf(messageEnd);
int indexStart = revStr.IndexOf(messageStart);
if (indexEnd > -1)
{
if (indexStart < indexEnd)
{
var msgItem = revStr.Substring(indexStart, indexEnd + messageEnd.Length - indexStart);
if (messages.Count > 0 && messages.Last() == msgItem)
{
revStr = revStr.Substring(indexEnd + messageEnd.Length);
continue;
}
else
{
messages.Add(msgItem);
revStr = revStr.Substring(indexEnd + messageEnd.Length);
}
}
else
{
if (indexStart > 0)
{
revStr = revStr.Substring(indexStart);
}
else
{
revStr = revStr.Substring(indexEnd + messageEnd.Length);
}
}
}
else
{
if (indexStart > -1)
{
fragmentMsg = revStr.Substring(indexStart);
revStr = fragmentMsg;
}
break;
}
}
#endregion
if (MessageReceive != null)
{
messages.ForEach(_ => MessageReceive.Invoke(_));
messages.Clear();
}
}
}
else
{
Thread.Sleep(100);
}
}
catch (Exception ex)
{
Program.logger.LogInfoDetail("Ayers 消息分析线程异常：{0}", ex.Message);
}
}
}
public static byte[] decryptBytes(byte[] key, byte[] data)
{
BlowfishECB blowFish = new BlowfishECB(key, 0, key.Length);
return(decryptBytes(blowFish, data));
}
