/// <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 specified</exception>
public static GMSSParameters FromId(byte[] OId)
{
if (OId == null)
{
throw new CryptoAsymmetricException("GMSSParamSets:FromId", "OId can not be null!", new ArgumentException());
}
if (OId.Length != 4)
{
throw new CryptoAsymmetricException("GMSSParamSets:FromId", "OId must be 4 bytes in length!", new ArgumentException());
}
if (OId[0] != (byte)AsymmetricEngines.GMSS)
{
throw new CryptoAsymmetricException("GMSSParamSets:FromId", "OId is not a valid GMSS parameter id!", new ArgumentException());
}
if (OId[3] == 1)
{
return((GMSSParameters)GMSSN2P10.DeepCopy());
}
else if (OId[3] == 2)
{
return((GMSSParameters)GMSSN2P20.DeepCopy());
}
else if (OId[3] == 3)
{
return((GMSSParameters)GMSSN2P40.DeepCopy());
}
else
{
throw new CryptoAsymmetricException("GMSSParamSets:FromId", "OId does not identify a valid param set!", 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 OId is specified</exception>
public static GMSSParameters FromName(GMSSParamNames ParamName)
{
switch (ParamName)
{
case GMSSParamNames.N2P10:
return((GMSSParameters)GMSSN2P10.DeepCopy());
case GMSSParamNames.N2P20:
return((GMSSParameters)GMSSN2P20.DeepCopy());
case GMSSParamNames.N2P40:
return((GMSSParameters)GMSSN2P40.DeepCopy());
default:
throw new CryptoAsymmetricException("GMSSParamSets:FromName", "The Parameter Name is not recognized!", new ArgumentException());
}
}
