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#################

NOTES FOR FABRIC ZK DEMO

#################

compile the circuit and generate test proof

./run.sh

generate proof with nodejs

npm run prove demo1_js/demo1.wasm demo1_js/demo1_final.zkey input.json

verify proof

npm run verify demo1_js/verification_key.json publicSignals.json proof.json

hyperledger network up from fabric-samples/test-network

cd fabric-samples/test-network ./network.sh up createChannel -c mychannel -ca

install javascript chaincode asset transfer

./network.sh deployCC -ccn basic -ccp ../asset-transfer-basic/#

chaincode-javascript/ -ccl javascript

install javascript chaincode fabcar: chaincode/fabcar/javascript

./network.sh deployCC -ccn fabcar -ccp ../chaincode/fabcar/javascript -ccl javascript

sending test transaction

export CORE_PEER_TLS_ENABLED=true export PATH=${PWD}/../bin:$PATH export FABRIC_CFG_PATH=$PWD/../config/ export CORE_PEER_LOCALMSPID="Org1MSP" export PEER0_ORG1_CA=${PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt export CORE_PEER_TLS_ROOTCERT_FILE=$PEER0_ORG1_CA export CORE_PEER_MSPCONFIGPATH=${PWD}/organizations/peerOrganizations/org1.example.com/users/[email protected]/msp export CORE_PEER_ADDRESS=localhost:7051

test query

peer chaincode query -C mychannel -n fabcar -c '{"Args":["queryAllCars"]}'
--peerAddresses localhost:7051 --tlsRootCertFiles ./organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt

test transaction

peer chaincode invoke -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --tls --cafile /home/dsz/fabric-samples/test-network/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem -C mychannel -n fabcar --peerAddresses localhost:7051 --tlsRootCertFiles /home/dsz/fabric-samples/test-network/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt --peerAddresses localhost:9051 --tlsRootCertFiles /home/dsz/fabric-samples/test-network/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt -c '{"function":"createCar","Args":["CAR11", "Nissan", "Leaf", "green", "Siobhán"]}'

query verify

peer chaincode query -C mychannel -n fabcar -c '{"Args":["verify","["970299","970299"]"]}'
--peerAddresses localhost:7051 --tlsRootCertFiles ./organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt

change owner with wrong proof

peer chaincode invoke -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --tls --cafile /home/dsz/fabric-samples/test-network/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem -C mychannel -n fabcar --peerAddresses localhost:7051 --tlsRootCertFiles /home/dsz/fabric-samples/test-network/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt --peerAddresses localhost:9051 --tlsRootCertFiles /home/dsz/fabric-samples/test-network/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt -c '{"function":"changeCarOwner","Args":["CAR11","Johny","["970298","970298"]"]}'

change owner with good proof

peer chaincode invoke -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --tls --cafile /home/dsz/fabric-samples/test-network/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem -C mychannel -n fabcar --peerAddresses localhost:7051 --tlsRootCertFiles /home/dsz/fabric-samples/test-network/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt --peerAddresses localhost:9051 --tlsRootCertFiles /home/dsz/fabric-samples/test-network/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt -c '{"function":"changeCarOwner","Args":["CAR11","Johny","["970299","970299"]"]}'

shut down fabric

./network.sh down

prube

docker volume prune