Signal-Android/libtextsecure/src/main/java/org/whispersystems/textsecure/internal/push/PreKeyEntity.java

79 lines
2.6 KiB
Java

/**
* Copyright (C) 2014 Open Whisper Systems
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.whispersystems.textsecure.internal.push;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import org.whispersystems.libaxolotl.InvalidKeyException;
import org.whispersystems.libaxolotl.ecc.Curve;
import org.whispersystems.libaxolotl.ecc.ECPublicKey;
import org.whispersystems.textsecure.internal.util.Base64;
import java.io.IOException;
public class PreKeyEntity {
@JsonProperty
private int keyId;
@JsonProperty
@JsonSerialize(using = ECPublicKeySerializer.class)
@JsonDeserialize(using = ECPublicKeyDeserializer.class)
private ECPublicKey publicKey;
public PreKeyEntity() {}
public PreKeyEntity(int keyId, ECPublicKey publicKey) {
this.keyId = keyId;
this.publicKey = publicKey;
}
public int getKeyId() {
return keyId;
}
public ECPublicKey getPublicKey() {
return publicKey;
}
private static class ECPublicKeySerializer extends JsonSerializer<ECPublicKey> {
@Override
public void serialize(ECPublicKey value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
gen.writeString(Base64.encodeBytesWithoutPadding(value.serialize()));
}
}
private static class ECPublicKeyDeserializer extends JsonDeserializer<ECPublicKey> {
@Override
public ECPublicKey deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
try {
return Curve.decodePoint(Base64.decodeWithoutPadding(p.getValueAsString()), 0);
} catch (InvalidKeyException e) {
throw new IOException(e);
}
}
}
}