/**
* return a parameter spec representing the passed in named curve. The routine returns null if the
* curve is not present.
*
* @param name the name of the curve requested
* @return a parameter spec for the curve, null if it is not available.
*/
public static ECNamedCurveParameterSpec getParameterSpec(String name) {
X9ECParameters ecP = org.spongycastle.crypto.ec.CustomNamedCurves.getByName(name);
if (ecP == null) {
try {
ecP = org.spongycastle.crypto.ec.CustomNamedCurves.getByOID(new ASN1ObjectIdentifier(name));
} catch (IllegalArgumentException e) {
// ignore - not an oid
}
if (ecP == null) {
ecP = org.spongycastle.asn1.x9.ECNamedCurveTable.getByName(name);
if (ecP == null) {
try {
ecP =
org.spongycastle.asn1.x9.ECNamedCurveTable.getByOID(new ASN1ObjectIdentifier(name));
} catch (IllegalArgumentException e) {
// ignore - not an oid
}
}
}
}
if (ecP == null) {
return null;
}
return new ECNamedCurveParameterSpec(
name, ecP.getCurve(), ecP.getG(), ecP.getN(), ecP.getH(), ecP.getSeed());
}
/**
* return an enumeration of the names of the available curves.
*
* @return an enumeration of the names of the available curves.
*/
public static Enumeration getNames() {
return org.spongycastle.asn1.x9.ECNamedCurveTable.getNames();
}