List of usage examples for org.bouncycastle.jce.spec ECNamedCurveSpec ECNamedCurveSpec
public ECNamedCurveSpec(String name, EllipticCurve curve, ECPoint g, BigInteger n, BigInteger h)
From source file:org.cesecore.keys.util.KeyTools.java
License:Open Source License
/** * Gets the key AlgorithmParameterSpec of supported keys. Can be used to initialize a KeyPairGenerator to generate a key of equal type and size. * /* ww w. j a v a2s . co m*/ * @param pk * PublicKey used to derive the AlgorithmParameterSpec * @return null if key is unsupported or pk is null, otherwise a AlgorithmParameterSpec. */ public static AlgorithmParameterSpec getKeyGenSpec(final PublicKey pk) { if (pk == null) { return null; } AlgorithmParameterSpec ret = null; if (pk instanceof RSAPublicKey) { log.debug("getKeyGenSpec: RSA"); final RSAPublicKey rpk = (RSAPublicKey) pk; ret = new RSAKeyGenParameterSpec(getKeyLength(pk), rpk.getPublicExponent()); } else if (pk instanceof DSAPublicKey) { log.debug("getKeyGenSpec: DSA"); final DSAPublicKey dpk = (DSAPublicKey) pk; final DSAParams params = dpk.getParams(); ret = new DSAParameterSpec(params.getP(), params.getQ(), params.getG()); } else if (pk instanceof ECPublicKey) { log.debug("getKeyGenSpec: ECPublicKey"); final ECPublicKey ecpub = (ECPublicKey) pk; final java.security.spec.ECParameterSpec sunsp = ecpub.getParams(); final EllipticCurve ecurve = new EllipticCurve(sunsp.getCurve().getField(), sunsp.getCurve().getA(), sunsp.getCurve().getB()); // ECParameterSpec par = new ECNamedCurveSpec(null, sunsp.getCurve(), sunsp.getGenerator(), sunsp.getOrder(), // BigInteger.valueOf(sunsp.getCofactor())); final ECParameterSpec params = new ECParameterSpec(ecurve, sunsp.getGenerator(), sunsp.getOrder(), sunsp.getCofactor()); if (log.isDebugEnabled()) { log.debug("Fieldsize: " + params.getCurve().getField().getFieldSize()); final EllipticCurve curve = params.getCurve(); log.debug("CurveA: " + curve.getA().toString(16)); log.debug("CurveB: " + curve.getB().toString(16)); log.debug("CurveSeed: " + curve.getSeed()); final ECFieldFp field = (ECFieldFp) curve.getField(); log.debug("CurveSfield: " + field.getP().toString(16)); final ECPoint p = params.getGenerator(); log.debug("Generator: " + p.getAffineX().toString(16) + ", " + p.getAffineY().toString(16)); log.debug("Order: " + params.getOrder().toString(16)); log.debug("CoFactor: " + params.getCofactor()); } ret = params; } else if (pk instanceof JCEECPublicKey) { log.debug("getKeyGenSpec: JCEECPublicKey"); final JCEECPublicKey ecpub = (JCEECPublicKey) pk; final org.bouncycastle.jce.spec.ECParameterSpec bcsp = ecpub.getParameters(); final ECCurve curve = bcsp.getCurve(); // TODO: this probably does not work for key generation with the Sun PKCS#11 provider. Maybe seed needs to be set to null as above? Or // something else, the BC curve is it the same? final ECParameterSpec params = new ECNamedCurveSpec(null, curve, bcsp.getG(), bcsp.getN(), bcsp.getH()); ret = params; // EllipticCurve ecc = new EllipticCurve(curve.) // ECParameterSpec sp = new ECParameterSpec(, bcsp.getG(), bcsp.getN(), bcsp.getH().intValue()); } return ret; }
From source file:org.ejbca.util.keystore.KeyTools.java
License:Open Source License
/** * Gets the key AlgorithmParameterSpec of supported keys. Can be used to initialize a KeyPairGenerator to generate a key of equal type and size. * @param pk PublicKey used to derive the AlgorithmParameterSpec * @return null if key is unsupported or pk is null, otherwise a AlgorithmParameterSpec. *///from w w w. j a va2s . c o m public static AlgorithmParameterSpec getKeyGenSpec(final PublicKey pk) { if (pk == null) { return null; } AlgorithmParameterSpec ret = null; if (pk instanceof RSAPublicKey) { log.debug("getKeyGenSpec: RSA"); final RSAPublicKey rpk = (RSAPublicKey) pk; ret = new RSAKeyGenParameterSpec(getKeyLength(pk), rpk.getPublicExponent()); } else if (pk instanceof DSAPublicKey) { log.debug("getKeyGenSpec: DSA"); final DSAPublicKey dpk = (DSAPublicKey) pk; final DSAParams params = dpk.getParams(); ret = new DSAParameterSpec(params.getP(), params.getQ(), params.getG()); } else if (pk instanceof ECPublicKey) { log.debug("getKeyGenSpec: ECPublicKey"); final ECPublicKey ecpub = (ECPublicKey) pk; final java.security.spec.ECParameterSpec sunsp = ecpub.getParams(); final EllipticCurve ecurve = new EllipticCurve(sunsp.getCurve().getField(), sunsp.getCurve().getA(), sunsp.getCurve().getB()); //ECParameterSpec par = new ECNamedCurveSpec(null, sunsp.getCurve(), sunsp.getGenerator(), sunsp.getOrder(), BigInteger.valueOf(sunsp.getCofactor())); final ECParameterSpec params = new ECParameterSpec(ecurve, sunsp.getGenerator(), sunsp.getOrder(), sunsp.getCofactor()); if (log.isDebugEnabled()) { log.debug("Fieldsize: " + params.getCurve().getField().getFieldSize()); final EllipticCurve curve = params.getCurve(); log.debug("CurveA: " + curve.getA().toString(16)); log.debug("CurveB: " + curve.getB().toString(16)); log.debug("CurveSeed: " + curve.getSeed()); final ECFieldFp field = (ECFieldFp) curve.getField(); log.debug("CurveSfield: " + field.getP().toString(16)); final ECPoint p = params.getGenerator(); log.debug("Generator: " + p.getAffineX().toString(16) + ", " + p.getAffineY().toString(16)); log.debug("Order: " + params.getOrder().toString(16)); log.debug("CoFactor: " + params.getCofactor()); } ret = params; } else if (pk instanceof JCEECPublicKey) { log.debug("getKeyGenSpec: JCEECPublicKey"); final JCEECPublicKey ecpub = (JCEECPublicKey) pk; final org.bouncycastle.jce.spec.ECParameterSpec bcsp = ecpub.getParameters(); final ECCurve curve = bcsp.getCurve(); //TODO: this probably does not work for key generation with the Sun PKCS#11 provider. Maybe seed needs to be set to null as above? Or something else, the BC curve is it the same? final ECParameterSpec params = new ECNamedCurveSpec(null, curve, bcsp.getG(), bcsp.getN(), bcsp.getH()); ret = params; //EllipticCurve ecc = new EllipticCurve(curve.) //ECParameterSpec sp = new ECParameterSpec(, bcsp.getG(), bcsp.getN(), bcsp.getH().intValue()); } return ret; }
From source file:org.xipki.security.p11.sun.ECParameters.java
License:Open Source License
protected void engineInit(final byte[] params) throws IOException { if (params.length < 30) { try {/*from ww w . jav a2s .c o m*/ ASN1ObjectIdentifier oid = (ASN1ObjectIdentifier) ASN1ObjectIdentifier.fromByteArray(params); ECParameterSpec spec = SunNamedCurveExtender.lookupCurve(oid.getId()); if (spec == null) { throw new IOException("unknown named curve: " + oid); } namedCurve = spec; return; } catch (IllegalArgumentException e) { } } // The code below is incomplete. // It is left as a starting point for a complete parsing implementation. X9ECParameters x9EcParams = X9ECParameters.getInstance(params); ECCurve curve = x9EcParams.getCurve(); ECNamedCurveSpec ecNamedCurveSpec = new ECNamedCurveSpec("dummy", curve, x9EcParams.getG(), x9EcParams.getN(), x9EcParams.getH()); ECParameterSpec spec = new ECParameterSpec(ecNamedCurveSpec.getCurve(), ecNamedCurveSpec.getGenerator(), ecNamedCurveSpec.getOrder(), ecNamedCurveSpec.getCofactor()); try { engineInit(spec); } catch (InvalidParameterSpecException e) { throw new IOException("InvalidParameterSpecException: " + e.getMessage(), e); } }