/**
* initialise the key generator.
*
* @param param the parameters to be used for key generation
*/
public void Init(
KeyGenerationParameters parameters)
{
if (parameters == null)
throw new ArgumentNullException("parameters");
this.uninitialised = false;
engineInit(parameters);
}
public void Init(
KeyGenerationParameters parameters)
{
if (parameters == null)
throw new ArgumentNullException("parameters");
// Note: If we start accepting instances of KeyGenerationParameters,
// must apply constraint checking on strength (see DsaParametersGenerator.Init)
this.param = (DsaKeyGenerationParameters) parameters;
}
protected virtual void engineInit(
KeyGenerationParameters parameters)
{
this.random = parameters.Random;
this.strength = (parameters.Strength + 7) / 8;
}
public void Init(
KeyGenerationParameters parameters)
{
if (parameters is RsaKeyGenerationParameters)
{
this.param = (RsaKeyGenerationParameters)parameters;
}
else
{
this.param = new RsaKeyGenerationParameters(
DefaultPublicExponent, parameters.Random, parameters.Strength, DefaultTests);
}
}
public void Init(
KeyGenerationParameters parameters)
{
if (parameters is ECKeyGenerationParameters)
{
ECKeyGenerationParameters ecP = (ECKeyGenerationParameters) parameters;
this.publicKeyParamSet = ecP.PublicKeyParamSet;
this.parameters = ecP.DomainParameters;
}
else
{
DerObjectIdentifier oid;
switch (parameters.Strength)
{
case 192:
oid = X9ObjectIdentifiers.Prime192v1;
break;
case 224:
oid = SecObjectIdentifiers.SecP224r1;
break;
case 239:
oid = X9ObjectIdentifiers.Prime239v1;
break;
case 256:
oid = X9ObjectIdentifiers.Prime256v1;
break;
case 384:
oid = SecObjectIdentifiers.SecP384r1;
break;
case 521:
oid = SecObjectIdentifiers.SecP521r1;
break;
default:
throw new InvalidParameterException("unknown key size.");
}
X9ECParameters ecps = FindECCurveByOid(oid);
this.parameters = new ECDomainParameters(
ecps.Curve, ecps.G, ecps.N, ecps.H, ecps.GetSeed());
}
this.random = parameters.Random;
if (this.random == null)
{
this.random = new SecureRandom();
}
}