org.whispersystems.libaxolotl.state.PreKeyRecord Maven / Gradle / Ivy
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package org.whispersystems.libaxolotl.state;
import com.google.protobuf.ByteString;
import org.whispersystems.libaxolotl.InvalidKeyException;
import org.whispersystems.libaxolotl.ecc.Curve;
import org.whispersystems.libaxolotl.ecc.ECKeyPair;
import org.whispersystems.libaxolotl.ecc.ECPrivateKey;
import org.whispersystems.libaxolotl.ecc.ECPublicKey;
import java.io.IOException;
import static org.whispersystems.libaxolotl.state.StorageProtos.PreKeyRecordStructure;
public class PreKeyRecord {
private PreKeyRecordStructure structure;
public PreKeyRecord(int id, ECKeyPair keyPair) {
this.structure = PreKeyRecordStructure.newBuilder()
.setId(id)
.setPublicKey(ByteString.copyFrom(keyPair.getPublicKey()
.serialize()))
.setPrivateKey(ByteString.copyFrom(keyPair.getPrivateKey()
.serialize()))
.build();
}
public PreKeyRecord(byte[] serialized) throws IOException {
this.structure = PreKeyRecordStructure.parseFrom(serialized);
}
public int getId() {
return this.structure.getId();
}
public ECKeyPair getKeyPair() {
try {
ECPublicKey publicKey = Curve.decodePoint(this.structure.getPublicKey().toByteArray(), 0);
ECPrivateKey privateKey = Curve.decodePrivatePoint(this.structure.getPrivateKey().toByteArray());
return new ECKeyPair(publicKey, privateKey);
} catch (InvalidKeyException e) {
throw new AssertionError(e);
}
}
public byte[] serialize() {
return this.structure.toByteArray();
}
}