SecureRandom random)
throws InvalidAlgorithmParameterException
{
if (params instanceof ECParameterSpec)
{
ECParameterSpec p = (ECParameterSpec)params;
this.ecParams = params;
param = new ECKeyGenerationParameters(new ECDomainParameters(p.getCurve(), p.getG(), p.getN()), random);
engine.init(param);
initialised = true;
}
else if (params instanceof java.security.spec.ECParameterSpec)
{
java.security.spec.ECParameterSpec p = (java.security.spec.ECParameterSpec)params;
this.ecParams = params;
ECCurve curve;
ECPoint g;
ECField field = p.getCurve().getField();
if (field instanceof ECFieldFp)
{
curve = new ECCurve.Fp(((ECFieldFp)p.getCurve().getField()).getP(), p.getCurve().getA(), p.getCurve().getB());
g = new ECPoint.Fp(curve, new ECFieldElement.Fp(((ECCurve.Fp)curve).getQ(), p.getGenerator().getAffineX()), new ECFieldElement.Fp(((ECCurve.Fp)curve).getQ(), p.getGenerator().getAffineY()));
}
else
{
ECFieldF2m fieldF2m = (ECFieldF2m)field;
int m = fieldF2m.getM();
int ks[] = ECUtil.convertMidTerms(fieldF2m.getMidTermsOfReductionPolynomial());
curve = new ECCurve.F2m(m, ks[0], ks[1], ks[2], p.getCurve().getA(), p.getCurve().getB());
g = new ECPoint.F2m(curve, new ECFieldElement.F2m(m, ks[0], ks[1], ks[2], p.getGenerator().getAffineX()), new ECFieldElement.F2m(m, ks[0], ks[1], ks[2], p.getGenerator().getAffineY()), false);
}
param = new ECKeyGenerationParameters(new ECDomainParameters(curve, g, p.getOrder(), BigInteger.valueOf(p.getCofactor())), random);
engine.init(param);
initialised = true;
}
else if (params instanceof ECGenParameterSpec)
{
if (this.algorithm.equals("ECGOST3410"))
{
ECDomainParameters ecP = ECGOST3410NamedCurves.getByName(((ECGenParameterSpec)params).getName());
if (ecP == null)
{
throw new InvalidAlgorithmParameterException("unknown curve name: " + ((ECGenParameterSpec)params).getName());
}
this.ecParams = new ECNamedCurveParameterSpec(
((ECGenParameterSpec)params).getName(),
ecP.getCurve(),
ecP.getG(),
ecP.getN(),
ecP.getH(),
ecP.getSeed());
}
else
{
X9ECParameters ecP = X962NamedCurves.getByName(((ECGenParameterSpec)params).getName());
if (ecP == null)
{
ecP = SECNamedCurves.getByName(((ECGenParameterSpec)params).getName());
if (ecP == null)
{
ecP = NISTNamedCurves.getByName(((ECGenParameterSpec)params).getName());
}
if (ecP == null)
{
throw new InvalidAlgorithmParameterException("unknown curve name: " + ((ECGenParameterSpec)params).getName());
}
}
this.ecParams = new ECNamedCurveSpec(
((ECGenParameterSpec)params).getName(),
ecP.getCurve(),
ecP.getG(),
ecP.getN(),
ecP.getH(),
ecP.getSeed());
}
java.security.spec.ECParameterSpec p = (java.security.spec.ECParameterSpec)ecParams;
ECCurve curve;
ECPoint g;
ECField field = p.getCurve().getField();
if (field instanceof ECFieldFp)
{
curve = new ECCurve.Fp(((ECFieldFp)p.getCurve().getField()).getP(), p.getCurve().getA(), p.getCurve().getB());
g = new ECPoint.Fp(curve, new ECFieldElement.Fp(((ECCurve.Fp)curve).getQ(), p.getGenerator().getAffineX()), new ECFieldElement.Fp(((ECCurve.Fp)curve).getQ(), p.getGenerator().getAffineY()));
}
else
{
ECFieldF2m fieldF2m = (ECFieldF2m)field;
int m = fieldF2m.getM();
int ks[] = ECUtil.convertMidTerms(fieldF2m.getMidTermsOfReductionPolynomial());
curve = new ECCurve.F2m(m, ks[0], ks[1], ks[2], p.getCurve().getA(), p.getCurve().getB());
g = new ECPoint.F2m(curve, new ECFieldElement.F2m(m, ks[0], ks[1], ks[2], p.getGenerator().getAffineX()), new ECFieldElement.F2m(m, ks[0], ks[1], ks[2], p.getGenerator().getAffineY()), false);
}
param = new ECKeyGenerationParameters(new ECDomainParameters(curve, g, p.getOrder(), BigInteger.valueOf(p.getCofactor())), random);
engine.init(param);
initialised = true;
}
else if (params == null && ProviderUtil.getEcImplicitlyCa() != null)
{
ECParameterSpec p = ProviderUtil.getEcImplicitlyCa();
this.ecParams = params;
param = new ECKeyGenerationParameters(new ECDomainParameters(p.getCurve(), p.getG(), p.getN()), random);
engine.init(param);
initialised = true;
}
else if (params == null && ProviderUtil.getEcImplicitlyCa() == null)