protected virtual void Dispose(bool disposing)
{
lock (this)
{
if (_disposed)
{
return;
}
_disposed = true;
}
if (disposing)
{
if (_encryptCtx != IntPtr.Zero)
{
Libcrypto.clean(_encryptCtx);
}
if (_decryptCtx != IntPtr.Zero)
{
Libcrypto.clean(_decryptCtx);
}
_encryptCtx = IntPtr.Zero;
_decryptCtx = IntPtr.Zero;
}
}
protected override void cipherUpdate(bool isCipher, int length, byte[] buf, byte[] outbuf)
{
if (_disposed)
{
throw new ObjectDisposedException(this.ToString());
}
int len = Libcrypto.update(isCipher ? _encryptCtx : _decryptCtx, buf, length, outbuf);
}
public static void InitAviable()
{
List <string> remove_ciphers = new List <string>();
foreach (string cipher in _ciphers.Keys)
{
if (!Libcrypto.is_cipher(cipher))
{
remove_ciphers.Add(cipher);
}
}
foreach (string cipher in remove_ciphers)
{
_ciphers.Remove(cipher);
}
}
protected override void initCipher(byte[] iv, bool isCipher)
{
base.initCipher(iv, isCipher);
IntPtr ctx;
byte[] realkey;
if (_method.StartsWith("rc4-md5"))
{
byte[] temp = new byte[keyLen + ivLen];
realkey = new byte[keyLen];
Array.Copy(_key, 0, temp, 0, keyLen);
Array.Copy(iv, 0, temp, keyLen, ivLen);
realkey = MbedTLS.MD5(temp);
}
else
{
realkey = _key;
}
if (isCipher)
{
if (_encryptCtx == IntPtr.Zero)
{
ctx = Libcrypto.init(Method, realkey, iv, 1);
_encryptCtx = ctx;
}
else
{
ctx = _encryptCtx;
}
}
else
{
if (_decryptCtx == IntPtr.Zero)
{
ctx = Libcrypto.init(Method, realkey, iv, 0);
_decryptCtx = ctx;
}
else
{
ctx = _decryptCtx;
}
}
}
public static bool isSupport()
{
return(Libcrypto.isSupport());
}