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

description: Creating and sending private transactions

Creating and Sending Private Transactions

Create and send private transactions using:

• web3.js-eea client library or web3j client library
• eea_sendTransaction with EthSigner
• eea_sendRawTransaction

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

Methods for Private Transactions

A private transaction creates a Privacy Marker Transaction in addition to the private transaction itself. Use eth_getTransactionReceipt to get the transaction receipt for the Privacy Maker Transaction and eea_getTransactionReceipt to get the transaction receipt for the private transaction.

Use eth_getTransactionByHash to get the Privacy Marker Transaction with the transaction hash returned when submitting the private transaction. Use priv_getPrivateTransaction to get the private transaction with the input value from the Privacy Marker Transaction.

Separate private states are maintained for each privacy group so the account nonce for an account is specific to the privacy group. That is, the nonce for account A for privacy group ABC is different to the account nonce for account A for privacy group AB. Use priv_getTransactionCount to get the account nonce for an account for the specified privacy group.

!!! note If sending a large number of private transactions, you may need to calculate the nonce for the account and privacy group outside the client.