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Connect to the JSON-RPC node proxy

This tutorial walks you through connecting to the JSON-RPC node proxy and signing an Ethereum transaction using Quorum Key Manager (QKM) as remote and secure storage for your wallets.

Prerequisites​

Steps​

  1. In the QKM manifest file, specify an Ethereum store to allocate your Ethereum wallets, and the RPC node to proxy your calls using QKM.

    Example manifest file
    - kind: Vault
      type: azure
      name: akv-europe
      specs:
        keystore: AzureKeys
        specs:
          vaultName: <AZURE-VAULT-ID>
          tenantID: <TENANT-ID>
          clientID: <CLIENT-ID>
          clientSecret: <SECRET>

    - kind: Store
      type: key
      name: akv-keys
      specs:
        vault: akv-europe

    - kind: Store
      type: ethereum
      name: eth-accounts
      specs:
        key_store: akv-keys

    - kind: Node
      name: quorum-node
      specs:
        rpc:
          addr: http://quorum1:8545
        tessera:
          addr: http://tessera1:9080

  2. Start QKM with the manifest file by using the --manifest-path option:

    key-manager run --manifest-path=<PATH-TO-MANIFEST-FILE>

  3. Create an Ethereum account:

    curl -X POST 'http://localhost:8080/stores/eth-accounts/ethereum'

  4. Sign a transaction using the Ethereum account and the RPC node proxy:

    curl -H "Content-Type: application/json" -X POST --data '{"jsonrpc":"2.0","method":"eth_sendTransaction","params":[{"from": "0xd8c88f28748367a11d3c6fc010eef7b670ac016f","to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567", "data":"0xafed"}], "id":1}' http://localhost:8080/nodes/quorum-node

  5. Fetch the transaction receipt using the RPC node proxy:

    curl -H "Content-Type: application/json" -X POST --data '{"jsonrpc":"2.0","method":"eth_getTransactionReceipt","params":["0x8c961ba2c3f51f9088e1a12a81bb1ad9c551ccfad75615f39e4fc95c3bb7086b"],"id":1}' http://localhost:8080/nodes/quorum-node