fabric-idemix-identity-demo

Demo Application for using Identity Mixer Identity in Fabric with Fabric Gateway Client API for Java and Fabric Gateway SDK for Java

Getting Started

Open a Terminal & Set Fabric Path. This is where our modified fabric-samples for Idemix Identity will reside.

FABRIC_PATH=~/Desktop/test && cd $FABRIC_PATH

Clone the repository

git clone https://github.com/KarthikKavinA/idemix-demo-fabric-samples.git

Navigate to test-network folder

cd idemix-demo-fabric-samples/test-network

Bring down the network to remove any crypto materials if any exists already

./network.sh down

Bring Up the network with Fabric CA

./network.sh up -ca

Create a channel named "mychannel"

./network.sh createChannel -c mychannel

Deploy the Go Chaincode to "mychannel"

Note: (Only Golang Chaincodes will have support for Idemix, Other chaincodes won't work with Idemix). For More Details, click here.

./network.sh deployCC -c mychannel -ccn basic -ccl go -ccp ../asset-transfer-basic/chaincode-go

Interacting with the network - Invocation and Query

a) Set Environmental Variables - (Org1MSP)

export FABRIC_CFG_PATH=${PWD}/./config
. scripts/envVar.sh
setGlobals 1

b) Invoking the Chaincode - (Note: x509 MSP is set in above env variables)

peer chaincode invoke -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --tls --cafile ${PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem -C mychannel -n basic --peerAddresses localhost:7051 --tlsRootCertFiles ${PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt --peerAddresses localhost:9051 --tlsRootCertFiles ${PWD}/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt -c '{"function":"InitLedger","Args":[]}'

c) Query the Chaincode

peer chaincode query -C mychannel -n basic -c '{"Args":["GetAllAssets"]}' | jq .

Submit Transaction using Idemix Identity from CLI

a) Generating an Idemix Credential for an User

FABRIC_PATH=~/Desktop/test
cd $FABRIC_PATH/idemix-demo-fabric-samples/test-network/organizations/peerOrganizations/org1.example.com
idemixgen signerconfig --ca-input=idemixmsp --admin --enrollmentId=appUser --org-unit=org1

b) Setting Environmental Variables for Idemix Identity

export CORE_PEER_ADDRESS=localhost:7051
export CORE_PEER_TLS_ROOTCERT_FILE=$FABRIC_PATH/idemix-demo-fabric-samples/test-network/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt
export CORE_PEER_TLS_ENABLED=true
export CORE_PEER_LOCALMSPTYPE=idemix
export CORE_PEER_LOCALMSPID=Org1IdemixMSP
export CORE_PEER_MSPCONFIGPATH=$FABRIC_PATH/idemix-demo-fabric-samples/test-network/organizations/peerOrganizations/org1.example.com/idemix-config

c) Invoking the Chaincode - (Note: idemix MSP is set in above env variables)

cd $FABRIC_PATH/idemix-demo-fabric-samples/test-network
export FABRIC_CFG_PATH=$PWD/./config
peer chaincode invoke -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --tls --cafile ${PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem -C mychannel -n basic --peerAddresses localhost:7051 --tlsRootCertFiles ${PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt --peerAddresses localhost:9051 --tlsRootCertFiles ${PWD}/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt -c '{"function":"TransferAsset","Args":["asset6","Kavin"]}'

d) Query the Chaicode using Idemix Identity

peer chaincode query -C mychannel -n basic -c '{"Args":["GetAllAssets"]}' | jq .

Submit Transaction using Idemix Identity - Fabric Gateway SDK for Java

a) Clone this Repository & Import into your favorite IDE

FABRIC_PATH=~/Desktop/test && cd $FABRIC_PATH
https://github.com/KarthikKavinA/fabric-idemix-identity-demo.git

b) Enroll an Admin User

Enroll an Admin User by running the class named "EnrollAdmin". Note that the file Admin Identity (admin.id) was created under "wallet" folder.

c) Register, Enroll & Store an User

Register, Enroll & Store a new User in a Wallet by running the class named "RegisterAndEnrollAndStoreUserInWallet". Note that the file User Identity was created under "wallet" folder.

d) Submit a Transaction

Submit a Transaction to the Network by running the class named "SubmitTxUsingOldGatewayJavaSDK". Please note that, we are selecting an Idemix Identity from a wallet which we have created in a previous step.

Submit Transaction using Idemix Identity - Fabric Gateway Client API for Java

To submit a transaction to a fabric network using Fabric Gateway Client API for Java, Run the class named "SubmitTxUsingIdemixIdentity". By default, it will create a new asset & query all assets by using an Idemix Identity from a fabric network.