/** * 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(); }