besu/docs/Privacy/Creating-Sending-Private-Transactions.md

description: Creating and sending private transactions
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# Creating and Sending Private Transactions 

The [EEA JavaScript library](https://github.com/PegaSysEng/eeajs) is provided to create and send signed 
RLP-encoded private transactions. 

!!! note
    Private transactions either deploy contracts or call contract functions. 
    Ether transfer transactions cannot be private. 

## Using Multinode Example 

To use the examples provided in EEA JS library with [your privacy network](Configuring-Privacy.md):

1. Clone the **PegaSysEng/eeajs** repository: 
     ```bash
     git clone https://github.com/PegaSysEng/eeajs.git
     ```

1. In the `eeajs` directory: 
   ```bash
   npm install
   ```

1. In the `example` directory, update the `keys.js` file to include:
    * Orion node public keys 
    * Pantheon node RPC URLs 
    * Pantheon node private keys 

1. If the `chainID` specified in the genesis file for your network is not `2018`, update `deployContract.js`, 
`storeValueFromNode1.js`, and `storeValueFromNode2.js` to specify your chain ID instead of `2018`. 

1. In the `example/multiNodeExample` directory, deploy the contract: 
   ```bash
   node deployContract.js
   ```

    A private transaction receipt is returned. 

    ```
    Transaction Hash  0x23b57ddc3ecf9c9a548e4401a411420ffc0002fd259a86d5656add7c6108beeb
    Waiting for transaction to be mined ...
    Private Transaction Receipt
     { contractAddress: '0xfee84481da8f4b9a998dfacb38091b3145bb01ab',
      from: '0x9811ebc35d7b06b3fa8dc5809a1f9c52751e1deb',
      to: null,
      output:
       '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',
      logs: [] } 
    ```   
   
1. Copy the contract address from the private transaction receipt and set the `CONTRACT_ADDRESS` environment variable: 
   
    ```bash
    export CONTRACT_ADDRESS=<Contract Address from Private Transaction Receipt>
    ```

    !!! example
        ```bash
        export CONTRACT_ADDRESS=0xfee84481da8f4b9a998dfacb38091b3145bb01ab 
        ```
   
1. Store a value in the contract from Node 1: 
    ```bash
    node storeValueFromNode1.js
    ```
   
    The value of 1000 (3e8 in hex) is stored by Node 1 and is visible to Node 1 and Node 2. 
   
    ```bash
    Transaction Hash: 0xd9d71cc6f64675e1a48183ded8f08930af317eb883ebae4c4eec66ae68618d85
    Waiting for transaction to be mined ...
    Event Emited: 0x0000000000000000000000009811ebc35d7b06b3fa8dc5809a1f9c52751e1deb00000000000000000000000000000000000000000000000000000000000003e8
    Waiting for transaction to be mined ...
    Get Value from http://localhost:8545: 0x00000000000000000000000000000000000000000000000000000000000003e8
    Waiting for transaction to be mined ...
    Get Value from http://localhost:8546: 0x00000000000000000000000000000000000000000000000000000000000003e8
    Waiting for transaction to be mined ...
    Get Value from http://localhost:8547: 0x
    ```

7. Store a value in the contract from Node 2: 
    ```bash
    node storeValueFromNode2.js
    ```
      
    The value of 42 (2a in hex) is stored by Node 1 and is visible to Node 1 and Node 2. 
      
    ```bash
    Transaction Hash: 0xa025433aec47a71b0230f12f43708812fd38ff7b7c1dc89a715f71dcbd5fbdbf
    Waiting for transaction to be mined ...
    Event Emited: 0x000000000000000000000000372a70ace72b02cc7f1757183f98c620254f9c8d000000000000000000000000000000000000000000000000000000000000002a
    Waiting for transaction to be mined ...
    Get Value from http://localhost:8545: 0x000000000000000000000000000000000000000000000000000000000000002a
    Waiting for transaction to be mined ...
    Get Value from http://localhost:8546: 0x000000000000000000000000000000000000000000000000000000000000002a
    Waiting for transaction to be mined ...
    Get Value from http://localhost:8547: 0x
    ```

    !!! note
        The Node 3 Orion log messages indicate payloads cannot be found. This is expected behaviour
        because Node 3 does not have access to the private transactions between Node 1 and Node 2.