package org.fisco.bcos.groupsig.app;
import java.math.BigInteger;
import org.fisco.bcos.channel.client.Service;
import org.fisco.bcos.groupsig.contract.TestGroupSig;
import org.fisco.bcos.groupsig.contract.TestRingSig;
import org.fisco.bcos.web3j.crypto.Credentials;
import org.fisco.bcos.web3j.crypto.gm.GenCredential;
import org.fisco.bcos.web3j.protocol.Web3j;
import org.fisco.bcos.web3j.protocol.channel.ChannelEthereumService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class SigServiceApp {
private Logger logger = LoggerFactory.getLogger(SigServiceApp.class);
// web3j
private Web3j web3j;
private ApplicationContext context;
// solidity object
// call back group signature algorithm implemented in precompiled contract
private TestGroupSig groupSig;
// call back ring signature algorithm implemented in precompiled contract
private TestRingSig ringSig;
private RequestSigService sigService;
private Credentials credentials;
private static final BigInteger gasPrice = new BigInteger("3000000000");
private static final BigInteger gasLimit = new BigInteger("3000000000");
// construct function
public SigServiceApp(RequestSigService paramSigService) {
sigService = paramSigService;
}
// load web3j configuration(define node&&channel port information) and init credentials
public boolean loadConfig() throws Exception {
System.out.println("please wait ...");
Service service;
try {
context = new ClassPathXmlApplicationContext("classpath:node/application.xml");
service = context.getBean(Service.class);
service.run();
} catch (Exception e) {
logger.error("load config failed, error msg: " + e.getMessage());
throw new Exception("load config failed, error msg: " + e.getMessage());
}
credentials = GenCredential.create();
// channel eth service
ChannelEthereumService channelService = new ChannelEthereumService();
channelService.setChannelService(service);
channelService.setTimeout(5000);
web3j = Web3j.build(channelService, service.getGroupId());
return true;
}
// deploy contract: return contract address
public void deployGroupSigContract(
String groupName, String memberName, String message, StringBuffer address)
throws Exception {
String errorMsg = "deploy group sig contract failed, error_msg: ";
try {
Service service = context.getBean(Service.class);
service.run();
} catch (Exception e) {
logger.error(errorMsg + e.getMessage());
throw new Exception(errorMsg + e.getMessage());
}
// callback group sig service
SigStruct sigObj = new SigStruct();
boolean ret = sigService.groupSig(sigObj, groupName, memberName, message);
System.out.println("### SIG: " + sigObj.getSig());
System.out.println("### GPK: " + sigObj.getGPK());
System.out.println("### PBC_PARAM: " + sigObj.getParam());
if (!ret) throw new Exception(errorMsg + "call rpc failed");
try {
groupSig =
TestGroupSig.deploy(
web3j,
credentials,
gasPrice,
gasLimit,
sigObj.getSig(),
message,
sigObj.getGPK(),
sigObj.getParam())
.send();
} catch (Exception e) {
logger.error(errorMsg + e.getMessage());
throw new Exception(errorMsg + e.getMessage());
}
address.append(groupSig.getContractAddress());
}
// deploy ring_sig contract
public void deployRingSigContract(
String message, String ringName, int memberPos, int ringSize, StringBuffer address)
throws Exception {
try {
Service service = context.getBean(Service.class);
service.run();
} catch (Exception e) {
logger.error("init service failed, error msg: " + e.getMessage());
throw new Exception("init service failed, error msg: " + e.getMessage());
}
SigStruct ringSigObj = new SigStruct();
boolean ret =
sigService.linkableRingSig(ringSigObj, message, ringName, memberPos, ringSize);
if (!ret) throw new Exception("call rpc failed");
try {
ringSig =
TestRingSig.deploy(
web3j,
credentials,
gasPrice,
gasLimit,
ringSigObj.getSig(),
message,
ringSigObj.getParam())
.send();
} catch (Exception e) {
logger.error("deploy ring sig contract failed, error_msg: " + e.getMessage());
throw new Exception("deploy ring sig contract failed, error_msg:" + e.getMessage());
}
address.append(ringSig.getContractAddress());
}
// update group sig data
public void updateGroupSigData(
String contractAddr,
String groupName,
String memberName,
String message,
StringBuffer updatedSig)
throws Exception {
SigStruct sigObj = new SigStruct();
boolean ret = sigService.groupSig(sigObj, groupName, memberName, message);
if (!ret) {
throw new Exception("call rpc failed");
}
groupSig = TestGroupSig.load(contractAddr, web3j, credentials, gasPrice, gasLimit);
try {
groupSig.update_group_sig_data(
sigObj.getSig(), message, sigObj.getGPK(), sigObj.getParam())
.send();
String sig = groupSig.get_group_sig().send();
updatedSig.append(sig);
} catch (Exception e) {
logger.error("update group sig data failed, error_msg: " + e.getMessage());
throw new Exception("update group sig data failed, error_msg: " + e.getMessage());
}
}
// send signature to blockchain
public void groupSigVerify(String contractAddress, StringBuffer verifyResult) throws Exception {
groupSig = TestGroupSig.load(contractAddress, web3j, credentials, gasPrice, gasLimit);
try {
groupSig.verify_group_sig().send();
boolean ret = groupSig.get_group_verify_result().send();
if (ret) verifyResult.append("true");
else verifyResult.append("false");
} catch (Exception e) {
logger.error("get cns code failed, error msg: " + e.getMessage());
throw new Exception("get cns code failed, error msg: " + e.getMessage());
}
}
// update ring sig data
public void updateRingSigData(
String contractAddr,
String message,
String ringName,
int memberPos,
int ringSize,
StringBuffer verifyResult)
throws Exception {
SigStruct ringSigObj = new SigStruct();
boolean ret =
sigService.linkableRingSig(ringSigObj, message, ringName, memberPos, ringSize);
if (!ret) {
throw new Exception("call rpc failed");
}
ringSig = TestRingSig.load(contractAddr, web3j, credentials, gasPrice, gasLimit);
try {
ringSig.update_ring_sig_data(ringSigObj.getSig(), message, ringSigObj.getParam())
.send();
String result = ringSig.get_ring_sig().send();
verifyResult.append(result);
} catch (Exception e) {
logger.error("update ring sig data failed, error msg: " + e.getMessage());
throw new Exception("update ring sig data failed, error msg: " + e.getMessage());
}
}
// ring sig verify
public void ringSigVerify(String contractAddress, StringBuffer verifyResult) throws Exception {
// load contract
ringSig = TestRingSig.load(contractAddress, web3j, credentials, gasPrice, gasLimit);
try {
ringSig.verify_ring_sig().send();
boolean ret = ringSig.get_ring_verify_result().send();
if (ret) verifyResult.append("true");
else verifyResult.append("false");
} catch (Exception e) {
logger.error("get cns code failed, error_msg: " + e.getMessage());
throw new Exception("get cns code failed, error_msg: " + e.getMessage());
}
}
}
