/// <summary>
/// Retrieve a parameter set by its identity code
/// </summary>
///
/// <param name="OId">The 3 byte parameter set identity code</param>
///
/// <returns>A populated parameter set</returns>
///
/// <exception cref="RLWEException">Thrown if an invalid or unknown OId is used.</exception>
public static RLWEParameters FromId(byte[] OId)
{
if (OId == null)
{
throw new RLWEException("RLWEParamSets:FromId", "OId can not be null!", new ArgumentNullException());
}
if (OId.Length != 3)
{
throw new RLWEException("RLWEParamSets:FromId", "OId must be 3 bytes in length!", new ArgumentOutOfRangeException());
}
if (OId[0] != 2)
{
throw new RLWEException("RLWEParamSets:FromId", "OId is not a valid RLWE parameter id!", new ArgumentException());
}
if (OId[2] == 0)
{
return((RLWEParameters)RLWEN256Q7681.Clone());
}
else if (OId[2] == 1)
{
return((RLWEParameters)RLWEN512Q12289.Clone());
}
throw new RLWEException("RLWEParamSets:FromId", "OId does not identify a valid param set!", new ArgumentOutOfRangeException());
}
/// <summary>
/// Retrieve a parameter set by its identity code
/// </summary>
///
/// <param name="OId">The 4 byte parameter set identity code</param>
///
/// <returns>A populated parameter set</returns>
///
/// <exception cref="CryptoAsymmetricException">Thrown if an invalid or unknown OId is used.</exception>
public static RLWEParameters FromId(byte[] OId)
{
if (OId == null)
{
throw new CryptoAsymmetricException("RLWEParamSets:FromId", "OId can not be null!", new ArgumentNullException());
}
if (OId.Length != 4)
{
throw new CryptoAsymmetricException("RLWEParamSets:FromId", "OId must be 4 bytes in length!", new ArgumentOutOfRangeException());
}
if (OId[0] != (byte)AsymmetricEngines.RingLWE)
{
throw new CryptoAsymmetricException("RLWEParamSets:FromId", "OId is not a valid RLWE parameter id!", new ArgumentException());
}
if (OId[3] == 1)
{
return((RLWEParameters)RLWEN256Q7681.DeepCopy());
}
else if (OId[3] == 2)
{
return((RLWEParameters)RLWEN512Q12289.DeepCopy());
}
throw new CryptoAsymmetricException("RLWEParamSets:FromId", "OId does not identify a valid param set!", new ArgumentOutOfRangeException());
}
/// <summary>
/// Retrieve a parameter set by its enumeration name
/// </summary>
///
/// <param name="Name">The enumeration name</param>
///
/// <returns>A populated parameter set</returns>
///
/// <exception cref="RLWEException">Thrown if an invalid or unknown parameter name is used.</exception>
public static RLWEParameters FromName(RLWEParamNames Name)
{
switch (Name)
{
case RLWEParamNames.N256Q7681:
return((RLWEParameters)RLWEN256Q7681.Clone());
case RLWEParamNames.N512Q12289:
return((RLWEParameters)RLWEN512Q12289.Clone());
default:
throw new RLWEException("RLWEParamSets:FromName", "The enumeration name is unknown!", new ArgumentException());
}
}
/// <summary>
/// Retrieve a parameter set by its enumeration name
/// </summary>
///
/// <param name="ParamName">The enumeration name</param>
///
/// <returns>A populated parameter set</returns>
///
/// <exception cref="CryptoAsymmetricException">Thrown if an invalid or unknown parameter name is used.</exception>
public static RLWEParameters FromName(RLWEParamNames ParamName)
{
switch (ParamName)
{
case RLWEParamNames.N256Q7681:
return((RLWEParameters)RLWEN256Q7681.DeepCopy());
case RLWEParamNames.N512Q12289:
return((RLWEParameters)RLWEN512Q12289.DeepCopy());
default:
throw new CryptoAsymmetricException("RLWEParamSets:FromName", "The enumeration name is unknown!", new ArgumentException());
}
}
