> ## Documentation Index
> Fetch the complete documentation index at: https://docs.hedera.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Manually sign a transaction

Sign a transaction using the private key(s) required to sign the transaction. You cannot sign the transaction with a public key. If your client operator account private key is the key used in the key field(s) of a transaction, you do not need to manually sign the transaction. The `execute(client)` method signs the transaction with the client operator account private key before it is submitted to a Hedera network.

<table><thead><tr><th /><th /><th /></tr></thead><tbody><tr><td><strong>Method</strong></td><td><strong>Type</strong></td><td><strong>Description</strong></td></tr><tr><td><code>sign(\<privateKey>)</code></td><td>PrivateKey</td><td>Sign the transaction with an ED25519 private key</td></tr><tr><td><code>signWith(\<publicKey, transactionSigner>)</code></td><td>PublicKey, TransactionSigner</td><td>Sign the transaction with a callback that may block waiting for user confirmation.</td></tr><tr><td><code>signWithOperator(\<client>)</code></td><td>Client</td><td>Sign the transaction with the client</td></tr><tr><td><code>signWithSigner(\<signer>)</code></td><td /><td>Sign the transaction with a local wallet. Local wallet available in Hedera JavaScript SDK only. >=<code>v2.11.0</code></td></tr></tbody></table>

<CodeGroup>
  ```java Java theme={null}
  //Create any transaction
  AccountUpdateTransaction transaction = new AccountUpdateTransaction()
       .setAccountId(accountId)
       .setKey(key);

  //Freeze the transaction for signing
  AccountUpdateTransaction freezeTransaction = transaction.freezeWith(client);

  //Sign the transaction with a private key
  AccountCreateTransaction signedTransaction = freezeTransaction
      .sign(PrivateKey.fromString("302e020100300506032b65700422042012a4a4add3d885bd61d7ce5cff88c5ef2d510651add00a7f64cb90de3359bc5c"));

  //v2.0.0    
  ```

  ```javascript JavaScript theme={null}
  //Create any transaction
  const transaction = await new AccountUpdateTransaction()
       .setAccountId(accountId)
       .setKey(key)
       .freezeWith(client);

  //Sign the transaction with a private key
  const signedTransaction = transaction
      .sign(PrivateKey.fromString("302e020100300506032b65700422042012a4a4add3d885bd61d7ce5cff88c5ef2d510651add00a7f64cb90de3359bc5c"));
  ```

  ```go Go theme={null}
  //Create any transaction
  transaction := hedera.NewAccountUpdateTransaction().
  		SetAccountID(newAccountId).
  		SetKey(updateKey.PublicKey())
  	
  //Freeze the transaction for signing
  freezeTransaction, err := transaction.FreezeWith(client)
  if err != nil {
      panic(err)
  }

  signedTransaction := freezeTransaction.Sign(hedera.PrivateKeyFromString("302e020100300506032b65700422042012a4a4add3d885bd61d7ce5cff88c5ef2d510651add00a7f64cb90de3359bc5c"))
  //v2.0.0
  ```

  ```rust Rust theme={null}
  // Create any transaction
  let transaction = AccountUpdateTransaction::new()
      .account_id(account_id)
      .key(key);

  // Freeze the transaction for signing
  let frozen_transaction = transaction.freeze_with(&client)?;

  // Sign the transaction with a private key
  let signed_transaction = frozen_transaction.sign(
      PrivateKey::from_str("302e020100300506032b65700422042012a4a4add3d885bd61d7ce5cff88c5ef2d510651add00a7f64cb90de3359bc5c")
  );

  // v0.34.0
  ```
</CodeGroup>