private void Dispose(bool Disposing)
{
if (!_isDisposed && Disposing)
{
try
{
if (_mcElieceParams != null)
{
_mcElieceParams.Dispose();
_mcElieceParams = null;
}
if (_rngEngine != null)
{
_rngEngine.Dispose();
_rngEngine = null;
}
_M = 0;
_N = 0;
_T = 0;
_fieldPoly = 0;
}
catch { }
_isDisposed = true;
}
}
/// <summary>
/// Initialize this class
/// </summary>
///
/// <param name="CiphersParams">The MPKCParameters instance containing thecipher settings</param>
public MPKCKeyGenerator(MPKCParameters CiphersParams)
{
_mcElieceParams = (MPKCParameters)CiphersParams;
// set source of randomness
_rngEngine = GetPrng(_mcElieceParams.RandomEngine);
_M = _mcElieceParams.M;
_N = _mcElieceParams.N;
_T = _mcElieceParams.T;
_fieldPoly = _mcElieceParams.FieldPolynomial;
}
/// <summary>
/// Initialize this class
/// </summary>
///
/// <param name="CiphersParams">The MPKCParameters instance containing thecipher settings</param>
public MPKCKeyGenerator(MPKCParameters CiphersParams)
{
_mcElieceParams = (MPKCParameters)CiphersParams;
// set source of randomness
_rngEngine = GetPrng(_mcElieceParams.RandomEngine);
_M = _mcElieceParams.M;
_N = _mcElieceParams.N;
_T = _mcElieceParams.T;
_fieldPoly = _mcElieceParams.FieldPolynomial;
}
/// <summary>
/// Get the cipher engine
/// </summary>
///
/// <param name="CipherParams">The engine type</param>
///
/// <returns>An initialized cipher</returns>
private IMPKCCiphers GetEngine(MPKCParameters CipherParams)
{
switch (CipherParams.CCA2Engine)
{
case McElieceCiphers.KobaraImai:
return(new KobaraImaiCipher(CipherParams));
case McElieceCiphers.Pointcheval:
return(new PointchevalCipher(CipherParams));
default:
return(new FujisakiCipher(CipherParams));
}
}
/// <summary>
/// Compare this object instance with another
/// </summary>
///
/// <param name="Obj">Object to compare</param>
///
/// <returns>True if equal, otherwise false</returns>
public override bool Equals(Object Obj)
{
if (this == Obj)
{
return(true);
}
if (Obj == null && this != null)
{
return(false);
}
MPKCParameters other = (MPKCParameters)Obj;
if (Digest != other.Digest)
{
return(false);
}
if (CCA2Engine != other.CCA2Engine)
{
return(false);
}
if (RandomEngine != other.RandomEngine)
{
return(false);
}
if (M != other.M)
{
return(false);
}
if (N != other.N)
{
return(false);
}
if (T != other.T)
{
return(false);
}
if (FieldPolynomial != other.FieldPolynomial)
{
return(false);
}
return(true);
}
/// <summary>
/// Initialize this class
/// </summary>
///
/// <param name="CipherParams">The McEliece cipher used to encrypt the hash</param>
/// <param name="Digest">The type of digest engine used</param>
public MPKCSign(MPKCParameters CipherParams, Digests Digest = Digests.SHA512)
{
_dgtEngine = GetDigest(CipherParams.Digest);
_asyCipher = GetEngine(CipherParams);
}
/// <summary>
/// Get the cipher engine
/// </summary>
///
/// <param name="CipherParams">The engine type</param>
///
/// <returns>An initialized cipher</returns>
private IMPKCCiphers GetEngine(MPKCParameters CipherParams)
{
switch (CipherParams.CCA2Engine)
{
case McElieceCiphers.KobaraImai:
return new KobaraImaiCipher(CipherParams);
case McElieceCiphers.Pointcheval:
return new PointchevalCipher(CipherParams);
default:
return new FujisakiCipher(CipherParams);
}
}
/// <summary>
/// Initialize this class
/// </summary>
///
/// <param name="CipherParams">The McEliece cipher used to encrypt the hash</param>
/// <param name="Digest">The type of digest engine used</param>
public MPKCSign(MPKCParameters CipherParams, Digests Digest = Digests.SHA512)
{
_dgtEngine = GetDigest(CipherParams.Digest);
_asyCipher = GetEngine(CipherParams);
}
/// <summary>
/// Initialize this class
/// </summary>
///
/// <param name="CipherParams">The cipher engine</param>
public MPKCEncrypt(MPKCParameters CipherParams)
{
_encEngine = GetEngine(CipherParams);
}
/// <summary>
/// Initialize this class
/// </summary>
///
/// <param name="CipherParams">The cipher engine</param>
public MPKCEncrypt(MPKCParameters CipherParams)
{
_encEngine = GetEngine(CipherParams);
}
private void Dispose(bool Disposing)
{
if (!_isDisposed && Disposing)
{
try
{
if (_mcElieceParams != null)
{
_mcElieceParams.Dispose();
_mcElieceParams = null;
}
if (_rngEngine != null)
{
_rngEngine.Dispose();
_rngEngine = null;
}
_M = 0;
_N = 0;
_T = 0;
_fieldPoly = 0;
}
catch { }
_isDisposed = true;
}
}
