@Override
public boolean equals(Object o) {
if (o == this) {
return true;
}
if (o instanceof OpenSSLECPublicKey) {
OpenSSLECPublicKey other = (OpenSSLECPublicKey) o;
return key.equals(other.key);
}
if (!(o instanceof ECPublicKey)) {
return false;
}
final ECPublicKey other = (ECPublicKey) o;
if (!getPublicKey().equals(other.getW())) {
return false;
}
final ECParameterSpec spec = getParams();
final ECParameterSpec otherSpec = other.getParams();
return spec.getCurve().equals(otherSpec.getCurve())
&& spec.getGenerator().equals(otherSpec.getGenerator())
&& spec.getOrder().equals(otherSpec.getOrder())
&& spec.getCofactor() == otherSpec.getCofactor();
}
/**
* Returns the 'order' parameter of a given ECDSA private key as a a byte buffer.
*
* @param key A PrivateKey instance. Must implement ECKey.
* @return A byte buffer corresponding to the 'order' parameter. This is a big-endian
* representation of a BigInteger.
*/
@CalledByNative
public static byte[] getECKeyOrder(PrivateKey key) {
if (key instanceof ECKey) {
ECParameterSpec params = ((ECKey) key).getParams();
return params.getOrder().toByteArray();
} else {
Log.w(TAG, "Not an ECKey instance!");
return null;
}
}
/**
* 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();
}
public PublicKeyDataObject getPublicKeyDataObject(
ASN1ObjectIdentifier usage, PublicKey publicKey) {
if (publicKey instanceof java.security.interfaces.RSAPublicKey) {
java.security.interfaces.RSAPublicKey pubKey =
(java.security.interfaces.RSAPublicKey) publicKey;
return new RSAPublicKey(usage, pubKey.getModulus(), pubKey.getPublicExponent());
} else {
ECPublicKey pubKey = (ECPublicKey) publicKey;
java.security.spec.ECParameterSpec params = pubKey.getParams();
return new ECDSAPublicKey(
usage,
((ECFieldFp) params.getCurve().getField()).getP(),
params.getCurve().getA(),
params.getCurve().getB(),
convertPoint(convertCurve(params.getCurve()), params.getGenerator()).getEncoded(),
params.getOrder(),
convertPoint(convertCurve(params.getCurve()), pubKey.getW()).getEncoded(),
params.getCofactor());
}
}
public void initialize(AlgorithmParameterSpec params, 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 = EC5Util.convertCurve(p.getCurve());
ECPoint g = EC5Util.convertPoint(curve, p.getGenerator(), 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
|| params instanceof ECNamedCurveGenParameterSpec) {
String curveName;
if (params instanceof ECGenParameterSpec) {
curveName = ((ECGenParameterSpec) params).getName();
} else {
curveName = ((ECNamedCurveGenParameterSpec) params).getName();
}
ECDomainParameters ecP = ECGOST3410NamedCurves.getByName(curveName);
if (ecP == null) {
throw new InvalidAlgorithmParameterException("unknown curve name: " + curveName);
}
this.ecParams =
new ECNamedCurveSpec(
curveName, ecP.getCurve(), ecP.getG(), ecP.getN(), ecP.getH(), ecP.getSeed());
java.security.spec.ECParameterSpec p = (java.security.spec.ECParameterSpec) ecParams;
ECCurve curve = EC5Util.convertCurve(p.getCurve());
ECPoint g = EC5Util.convertPoint(curve, p.getGenerator(), false);
param =
new ECKeyGenerationParameters(
new ECDomainParameters(curve, g, p.getOrder(), BigInteger.valueOf(p.getCofactor())),
random);
engine.init(param);
initialised = true;
} else if (params == null && BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa() != null) {
ECParameterSpec p = BouncyCastleProvider.CONFIGURATION.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 && BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa() == null) {
throw new InvalidAlgorithmParameterException("null parameter passed but no implicitCA set");
} else {
throw new InvalidAlgorithmParameterException(
"parameter object not a ECParameterSpec: " + params.getClass().getName());
}
}