/**
* Return a PKCS8 representation of the key. The sequence returned represents a full
* PrivateKeyInfo object.
*
* @return a PKCS8 representation of the key.
*/
public byte[] getEncoded() {
X962Parameters params;
if (ecSpec instanceof ECNamedCurveSpec) {
DERObjectIdentifier curveOid = ECUtil.getNamedCurveOid(((ECNamedCurveSpec) ecSpec).getName());
if (curveOid == null) // guess it's the OID
{
curveOid = new DERObjectIdentifier(((ECNamedCurveSpec) ecSpec).getName());
}
params = new X962Parameters(curveOid);
} else if (ecSpec == null) {
params = new X962Parameters(DERNull.INSTANCE);
} else {
ECCurve curve = EC5Util.convertCurve(ecSpec.getCurve());
X9ECParameters ecP =
new X9ECParameters(
curve,
EC5Util.convertPoint(curve, ecSpec.getGenerator(), withCompression),
ecSpec.getOrder(),
BigInteger.valueOf(ecSpec.getCofactor()),
ecSpec.getCurve().getSeed());
params = new X962Parameters(ecP);
}
PrivateKeyInfo info;
ECPrivateKeyStructure keyStructure;
if (publicKey != null) {
keyStructure = new ECPrivateKeyStructure(this.getS(), publicKey, params);
} else {
keyStructure = new ECPrivateKeyStructure(this.getS(), params);
}
if (algorithm.equals("ECGOST3410")) {
info =
new PrivateKeyInfo(
new AlgorithmIdentifier(
CryptoProObjectIdentifiers.gostR3410_2001, params.getDERObject()),
keyStructure.getDERObject());
} else {
info =
new PrivateKeyInfo(
new AlgorithmIdentifier(X9ObjectIdentifiers.id_ecPublicKey, params.getDERObject()),
keyStructure.getDERObject());
}
return info.getDEREncoded();
}
