89 lines
3.0 KiB
Java
89 lines
3.0 KiB
Java
/**
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* Copyright (C) 2014 Open Whisper Systems
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.whispersystems.textsecure.api.push;
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import com.google.thoughtcrimegson.GsonBuilder;
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import com.google.thoughtcrimegson.JsonDeserializationContext;
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import com.google.thoughtcrimegson.JsonDeserializer;
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import com.google.thoughtcrimegson.JsonElement;
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import com.google.thoughtcrimegson.JsonParseException;
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import com.google.thoughtcrimegson.JsonPrimitive;
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import com.google.thoughtcrimegson.JsonSerializationContext;
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import com.google.thoughtcrimegson.JsonSerializer;
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import org.whispersystems.libaxolotl.ecc.ECPublicKey;
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import org.whispersystems.textsecure.internal.util.Base64;
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import org.whispersystems.textsecure.internal.push.PreKeyEntity;
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import java.io.IOException;
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import java.lang.reflect.Type;
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public class SignedPreKeyEntity extends PreKeyEntity {
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private byte[] signature;
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public SignedPreKeyEntity() {}
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public SignedPreKeyEntity(int keyId, ECPublicKey publicKey, byte[] signature) {
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super(keyId, publicKey);
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this.signature = signature;
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}
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public byte[] getSignature() {
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return signature;
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}
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public static String toJson(SignedPreKeyEntity entity) {
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GsonBuilder builder = new GsonBuilder();
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return forBuilder(builder).create().toJson(entity);
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}
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public static SignedPreKeyEntity fromJson(String serialized) {
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GsonBuilder builder = new GsonBuilder();
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return forBuilder(builder).create().fromJson(serialized, SignedPreKeyEntity.class);
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}
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public static GsonBuilder forBuilder(GsonBuilder builder) {
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return PreKeyEntity.forBuilder(builder)
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.registerTypeAdapter(byte[].class, new ByteArrayJsonAdapter());
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}
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private static class ByteArrayJsonAdapter
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implements JsonSerializer<byte[]>, JsonDeserializer<byte[]>
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{
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@Override
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public JsonElement serialize(byte[] signature, Type type,
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JsonSerializationContext jsonSerializationContext)
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{
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return new JsonPrimitive(Base64.encodeBytesWithoutPadding(signature));
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}
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@Override
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public byte[] deserialize(JsonElement jsonElement, Type type,
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JsonDeserializationContext jsonDeserializationContext)
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throws JsonParseException
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{
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try {
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return Base64.decodeWithoutPadding(jsonElement.getAsJsonPrimitive().getAsString());
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} catch (IOException e) {
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throw new JsonParseException(e);
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}
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}
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}
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}
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