com.klaytn.caver.account.AccountKeyLegacy Maven / Gradle / Ivy
/*
* Copyright 2020 The caver-java Authors
*
* Licensed under the Apache License, Version 2.0 (the “License”);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an “AS IS” BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.klaytn.caver.account;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import com.klaytn.caver.tx.account.AccountKey;
import org.web3j.utils.Numeric;
import java.io.IOException;
import java.util.Arrays;
/**
* AccountKeyLegacy represents a key of legacy account types. If an account has AccountKeyLegacy,
* the tx validation process is done like below (as Ethereum did):
*
* Get the public key from ecrecover(txhash, txsig)
* Get the address of the public key
* The address is the sender
*
*/
@JsonSerialize(using = AccountKeyLegacy.AccountKeyLegacySerializer.class)
public class AccountKeyLegacy implements IAccountKey{
/**
* AccountKeyLegacy's RLP-encoded data.
*/
private static final byte[] RLP = new byte[]{(byte) 0x01, (byte) 0xc0};
/**
* AccountKeyLegacy's Type attribute.
*/
private static final String TYPE = "0x01";
/**
* Creates an AccountKeyLegacy instance
*/
public AccountKeyLegacy() {
}
/**
* Decodes a RLP-encoded AccountKeyLegacy string
* @param rlpEncodedKey A RLP-encoded AccountKeyLegacy string
* @return AccountKeyLegacy
*/
public static AccountKeyLegacy decode(String rlpEncodedKey) {
return decode(Numeric.hexStringToByteArray(rlpEncodedKey));
}
/**
* Decodes a RLP-encoded AccountKeyLegacy byte array
* @param rlpEncodedKey RLP-encoded AccountKeyLegacy byte array
* @return AccountKeyLegacy
*/
public static AccountKeyLegacy decode(byte[] rlpEncodedKey) {
if(!Arrays.equals(RLP, rlpEncodedKey)) {
throw new RuntimeException("Invalid RLP-encoded account key String");
}
return new AccountKeyLegacy();
}
/**
* Encodes a AccountKeyLegacy Object by RLP-encoding method.
* @return RLP-encoded AccountKeyLegacy string
*/
@Override
public String getRLPEncoding() {
return Numeric.toHexString(RLP);
}
/**
* Returns an AccountKeyLegacy's type attribute
* @return AccountKeyLegacy's type attribute
*/
public static String getType() {
return TYPE;
}
/**
* Serialize class to AccountKeyLegacy object into JSON.
*/
public static class AccountKeyLegacySerializer extends JsonSerializer {
@Override
public void serialize(AccountKeyLegacy value, JsonGenerator gen, SerializerProvider serializers) throws IOException, JsonProcessingException {
gen.writeStartObject();
gen.writeFieldName("keyType");
gen.writeNumber(Numeric.toBigInt(getType()));
gen.writeFieldName("key");
gen.writeStartObject();
gen.writeEndObject();
gen.writeEndObject();
}
}
}