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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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package sun.security.ec;
import java.io.IOException;
import java.security.*;
import java.security.interfaces.*;
import java.security.spec.*;
import sun.security.util.ECParameters;
import sun.security.util.ECUtil;
import sun.security.x509.*;
/**
* Key implementation for EC public keys.
*
* @since 1.6
* @author Andreas Sterbenz
*/
public final class ECPublicKeyImpl extends X509Key implements ECPublicKey {
private static final long serialVersionUID = -2462037275160462289L;
private ECPoint w;
private ECParameterSpec params;
/**
* Construct a key from its components. Used by the
* ECKeyFactory.
*/
@SuppressWarnings("deprecation")
ECPublicKeyImpl(ECPoint w, ECParameterSpec params)
throws InvalidKeyException {
this.w = w;
this.params = params;
// generate the encoding
algid = new AlgorithmId
(AlgorithmId.EC_oid, ECParameters.getAlgorithmParameters(params));
key = ECUtil.encodePoint(w, params.getCurve());
}
/**
* Construct a key from its encoding.
*/
ECPublicKeyImpl(byte[] encoded) throws InvalidKeyException {
decode(encoded);
}
// see JCA doc
public String getAlgorithm() {
return "EC";
}
// see JCA doc
public ECPoint getW() {
return w;
}
// see JCA doc
public ECParameterSpec getParams() {
return params;
}
// Internal API to get the encoded point. Currently used by SunPKCS11.
// This may change/go away depending on what we do with the public API.
@SuppressWarnings("deprecation")
public byte[] getEncodedPublicValue() {
return key.clone();
}
/**
* Parse the key. Called by X509Key.
*/
@SuppressWarnings("deprecation")
protected void parseKeyBits() throws InvalidKeyException {
AlgorithmParameters algParams = this.algid.getParameters();
if (algParams == null) {
throw new InvalidKeyException("EC domain parameters must be " +
"encoded in the algorithm identifier");
}
try {
params = algParams.getParameterSpec(ECParameterSpec.class);
w = ECUtil.decodePoint(key, params.getCurve());
} catch (IOException e) {
throw new InvalidKeyException("Invalid EC key", e);
} catch (InvalidParameterSpecException e) {
throw new InvalidKeyException("Invalid EC key", e);
}
}
// return a string representation of this key for debugging
public String toString() {
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