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.
V2
V1
Method
Type
Description
sign(<privateKey>)
PrivateKey
Sign the transaction with an Ed25519 private key
signWith(<publicKey, transactionSigner>)
PublicKey, TransactionSigner
Sign the transaction with a callback that may block waiting for user confirmation.
signWithOperator(<client>)
Client
Sign the transaction with the client
Java
1
//Create any transaction
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AccountUpdateTransaction transaction = new AccountUpdateTransaction()
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     .setAccountId(accountId)
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     .setKey(key);
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​
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//Freeze the transaction for signing
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AccountUpdateTransaction freezeTransaction = transaction.freezeWith(client);
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​
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//Sign the transaction with a private key
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AccountCreateTransaction signedTransaction = freezeTransaction
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    .sign(PrivateKey.fromString("302e020100300506032b65700422042012a4a4add3d885bd61d7ce5cff88c5ef2d510651add00a7f64cb90de3359bc5c");
12
​
13
//v2.0.0    
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JavaScript
1
//Create any transaction
2
const transaction = await new AccountUpdateTransaction()
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     .setAccountId(accountId)
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     .setKey(key)
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     .freezeWith(client);
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​
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//Sign the transaction with a private key
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const signedTransaction = transaction
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    .sign(PrivateKey.fromString("302e020100300506032b65700422042012a4a4add3d885bd61d7ce5cff88c5ef2d510651add00a7f64cb90de3359bc5c");
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Go
1
//Create any transaction
2
transaction := hedera.NewAccountUpdateTransaction().
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		SetAccountID(newAccountId).
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		SetKey(updateKey.PublicKey())
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//Freeze the transaction for signing
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freezeTransaction, err := transaction.FreezeWith(client)
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if err != nil {
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    panic(err)
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}
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​
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signedTransaction := freezeTransaction.Sign(hedera.PrivateKeyFromString("302e020100300506032b65700422042012a4a4add3d885bd61d7ce5cff88c5ef2d510651add00a7f64cb90de3359bc5c"))
13
//v2.0.0
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Method
Type
Description
sign(<privateKey>)
Ed25519PrivateKey
Sign the transaction with an Ed25519 private key
Java
1
//Create any transaction
2
AccountUpdateTransaction transaction = new AccountUpdateTransaction()
3
     .setAccountId(accountId)
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     .setKey(publicKey);
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​
6
//Freeze the transaction for signing
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Transaction freezeTransaction = transaction.build(client);
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​
9
//Sign the transaction with a private key
10
AccountCreateTransaction signedTransaction = freezeTransaction
11
    .sign(Ed25519PrivateKey.fromString("302e020100300506032b65700422042012a4a4add3d885bd61d7ce5cff88c5ef2d510651add00a7f64cb90de3359bc5c");
12
​
13
//v1.3.2  
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JavaScript
1
//Create any transaction
2
const transaction = new AccountUpdateTransaction()
3
     .setAccountId(accountId)
4
     .setKey(publicKey);
5
​
6
//Freeze the transaction for signing
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const freezeTransaction = transaction.build(client);
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​
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//Sign the transaction with a private key
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const signedTransaction = freezeTransaction
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    .sign(Ed25519PrivateKey.fromString("302e020100300506032b65700422042012a4a4add3d885bd61d7ce5cff88c5ef2d510651add00a7f64cb90de3359bc5c");
12
​
13
//v1.4.4
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​

Create an unsigned transaction

Submit a transaction

Last modified 6d ago

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