Module com.hedera.hashgraph.sdk

Package com.hedera.hashgraph.sdk

Class EthereumTransactionData

java.lang.Object

com.hedera.hashgraph.sdk.EthereumTransactionData

Direct Known Subclasses:

EthereumTransactionDataEip1559, EthereumTransactionDataEip2930, EthereumTransactionDataLegacy

public abstract class EthereumTransactionData
extends Object

This class represents the data of an Ethereum transaction.

It may be of subclass EthereumTransactionDataLegacy, EthereumTransactionDataEip2930 or EthereumTransactionDataEip1559.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static final class	EthereumTransactionData.SignatureData	The result of signing a transaction: the r and s signature components and the recovery id.

Field Summary

Fields

Modifier and Type	Field	Description
byte[]	callData	The raw call data.

Constructor Summary

Constructors

Constructor	Description
EthereumTransactionData(byte[] callData)

Method Summary

Modifier and Type	Method	Description
(package private) static boolean	ethereumBodyIsSigned(EthereumTransactionData body)
(package private) static EthereumTransactionData	fromBytes(byte[] bytes)
abstract byte[]	sign(PrivateKey privateKey)	Sign this transaction body with the given ECDSA private key, populating the signature fields (r, s and the recovery id / v), and return the resulting signed RLP encoding.
(package private) static EthereumTransactionData.SignatureData	signMessage(byte[] message, PrivateKey privateKey)	Sign a raw message (already keccak256-able) with an ECDSA key and extract the r/s/recoveryId components.
(package private) static EthereumTransactionData.SignatureData	signTypedTransaction(byte[] unsignedListRlp, int typePrefix, PrivateKey privateKey)	Sign a typed (non-legacy) Ethereum transaction.
abstract byte[]	toBytes()	Serialize the ethereum transaction data into bytes using RLP
abstract String	toString()	Serialize the ethereum transaction data into a string

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

callData

public byte[] callData

The raw call data.

Constructor Details

EthereumTransactionData

EthereumTransactionData(byte[] callData)

Method Details

fromBytes

static EthereumTransactionData fromBytes(byte[] bytes)

toBytes

public abstract byte[] toBytes()

Serialize the ethereum transaction data into bytes using RLP

Returns:

the serialized transaction as a byte array

sign

public abstract byte[] sign(PrivateKey privateKey)

Sign this transaction body with the given ECDSA private key, populating the signature fields (r, s and the recovery id / v), and return the resulting signed RLP encoding.

Parameters:

privateKey - the ECDSA secp256k1 key to sign with

Returns:

the signed RLP-encoded transaction

toString

public abstract String toString()

Serialize the ethereum transaction data into a string

Overrides:

toString in class Object

Returns:

the serialized transaction as a string

signTypedTransaction

static EthereumTransactionData.SignatureData signTypedTransaction(byte[] unsignedListRlp,
 int typePrefix,
 PrivateKey privateKey)

Sign a typed (non-legacy) Ethereum transaction. The message that is signed is the type prefix byte concatenated with the RLP-encoded unsigned payload list. PrivateKeyECDSA.sign(byte[]) applies keccak256 internally, so the raw message is passed without pre-hashing.

Parameters:

unsignedListRlp - the RLP encoding of the unsigned payload list (without the type prefix)

typePrefix - the EIP transaction type prefix byte

privateKey - the ECDSA key

Returns:

the r/s/recoveryId signature components

signMessage

static EthereumTransactionData.SignatureData signMessage(byte[] message,
 PrivateKey privateKey)

Sign a raw message (already keccak256-able) with an ECDSA key and extract the r/s/recoveryId components.

Parameters:

message - the message to sign

privateKey - the ECDSA key

Returns:

the r/s/recoveryId signature components

ethereumBodyIsSigned

static boolean ethereumBodyIsSigned(EthereumTransactionData body)

Parameters:

body - an ethereum transaction body

Returns:

whether the body carries a non-empty signature (both r and s present)