Ethereum & EVM compatible

getEthereumSignedTransaction

The D'CENT Android SDK provides functions for signing transaction of coins.

This function for :

ETHEREUM (ETH) - ethereum
ETH_CLASSIC (ETC) - ethereum classic
ETHEREUM_GOERLI (ETHt) - etheruem goerli
FLARE_COSTON (CFLR) - flare network coston
RSK (RBTC)- rsk smart bitcoin
RSK_TESTNET (RBTCt) - rsk smart bitcoin testnet
XDC (XDC) - xdc network
XDC_APOTHEM (XDCt) - xdc apothem
BSC (BNB) - binance smart chain
BSC_TESTNET (BNBt) - binance smart chain testnet
POLYGON (MATIC) - polygon
POLYGON_TESTNET (MATICt) - polygon testnet
ETH_CHAIN - other evm networks

Parameters

Parameter Type Description

Parameter	Type	Description
coinType	`CoinType`	ethereum coin type.
transaction	EtheruemTransaction	ethereum transaction parameters.

coinType

CoinType

ethereum coin type.

transaction

EtheruemTransaction

ethereum transaction parameters.

class EthereumTransaction

Name Type Description

Name	Type	Description
hdKeyPath	`Bip44KeyPath`	sign key path for ethereum transaction
nonce	`String`	account nonce for ethereum transaction
toAddr	`String`	recipient's address of ethereum transaction
amount	`String`	amount of ether to be sent. ( WEI unit value )
gasLimit	`String`	gas limit value of ethereum transaction
gasPrice	`String`	gas price for ethereum transaction
data	`String`	transaction data of ethereum transaction
chainId	`int`	chain id
symbol	`String`	symbol of contract for ethereum transaction
tx_type	`byte`	(optional)Type of ethereum transaction
max_priority_fpg	`String`	(optional)max_priority_fpg of ethereum transaction
max_fee_per_gas	`String`	(optional)max_fee_per gas of ethereum transaction
access_list	`String`	(optional)access_list of ethereum transaction

hdKeyPath

Bip44KeyPath

sign key path for ethereum transaction

nonce

String

account nonce for ethereum transaction

toAddr

String

recipient's address of ethereum transaction

amount

String

amount of ether to be sent. ( WEI unit value )

gasLimit

String

gas limit value of ethereum transaction

gasPrice

String

gas price for ethereum transaction

data

String

transaction data of ethereum transaction

chainId

int

chain id

symbol

String

symbol of contract for ethereum transaction

tx_type

byte

(optional)Type of ethereum transaction

max_priority_fpg

String

(optional)max_priority_fpg of ethereum transaction

max_fee_per_gas

String

(optional)max_fee_per gas of ethereum transaction

access_list

String

(optional)access_list of ethereum transaction

Returns

String - signed transaction.

Requirements

Refer to "D`CENT Firmware Update History" to determine which D'CENT Biometric Wallet versions are supported on each network.

Example

EthereumTransanction ethereumTransanction;
ethereumTransanction = new EthereumTransanction.Builder()
                .keyPath(Bip44KeyPath.valueOf("m/44'/60'/0'/0/0"))
                .nonce("14")
                .toAddr("0xe5c23dAa6480e45141647E5AeB321832150a28D4")
                .amount("500000000000000")
                .gasLimit("21000")
                .gasPrice("6000000000")
                .data("0x")
                .chainId("1")
                .symbol("ETH")
                .build();
String response = mDcentmanager.getEthereumSignedTransaction(CoinType.ETHEREUM, ethereumTransanction);

getTokenSignedTransaction

This function for :

ERC20 - ethereum erc20 token
ETC_ERC20 - ethereum classic erc20 token
ERC20_KOVAN - etheruem kovan erc20 token
ERC20_ROPSTEN - etheruem ropsten erc20 token
ERC20_GOERLI - etheruem goerli erc20 token
ERC20_RINKEBY - etheruem rinkeby erc20 token
FRC20_COSTON - flare network coston token
RRC20 - rsk smart bitcoin token
RRC20_TESTNET - rsk smart bitcoin testnet token
XRC20 - xdc xrc20 token
XRC20_APOTHEM - xdc apothem xrc20 token
BSC_BEP20 - binance smart chain bep20 token
BSC_BEP20_TESTNET - binance smart chain bep20 testnet token
POLYGON_ERC20 - polygon erc20 token
POLYGON_ERC20_TESTNET - polygon erc20 testnet token
ECH_ERC20 - other evm erc20 token

Parameters

Parameter Type Description

Parameter	Type	Description
coinType	`CoinType`	erc20 type.
transaction	TokenTransaction	token transaction parameters.

coinType

CoinType

erc20 type.

transaction

TokenTransaction

token transaction parameters.

class TokenTransaction

Name Type Description

Name	Type	Description
hdKeyPath	`Bip44KeyPath`	sign key path for ethereum transaction
nonce	`String`	account nonce for ethereum transaction
toAddr	`String`	address to send
amount	`String`	amount of ETH to send
gasLimit	`String`	gas limit value
gasPrice	`String`	gas price for ethereum transaction
tokenName	`String`	token name of contract for ERC20 transaction
contractAddress	`String`	address of contract for ERC20 transaction
decimals	`String`	decimals of contract for ERC20 transaction
symbol	`String`	symbol of contract for ERC20 transaction
chainId	`String`	chain id
feeSymbol	`String`	symbol of fee Account for ERC20 transaction

hdKeyPath

Bip44KeyPath

sign key path for ethereum transaction

nonce

String

account nonce for ethereum transaction

toAddr

String

address to send

amount

String

amount of ETH to send

gasLimit

String

gas limit value

gasPrice

String

gas price for ethereum transaction

tokenName

String

token name of contract for ERC20 transaction

contractAddress

String

address of contract for ERC20 transaction

decimals

String

decimals of contract for ERC20 transaction

symbol

String

symbol of contract for ERC20 transaction

chainId

String

chain id

feeSymbol

String

symbol of fee Account for ERC20 transaction

Returns

String - signed transaction.

Requirements

Refer to "D`CENT Firmware Update History" to determine which D'CENT Biometric Wallet versions are supported on each network.

Example

TokenTransaction erc20transaction;
erc20transaction = new TokenTransaction.Builder()
                .keyPath(Bip44KeyPath.valueOf("m/44'/60'/0'/0/0"))
                .nonce("14")
                .toAddr("0xe5c23dAa6480e45141647E5AeB321832150a28D4")
                .amount("60000000000000000")
                .gasLimit("70000")
                .gasPrice("3000000000")
                .tokenName("OmiseGO")
                .contractAddress("0xd26114cd6ee289accf82350c8d8487fedb8a0c07")
                .decimals("18")
                .symbol("OMG")
                .chainId("1")
                .feeSymbol("ETH")
                .build();

String response = mDcentmanager.getTokenSignedTransaction(CoinType.ERC20, erc20transaction)

getEthereumMessageSigned

Get the sign value of "EVM" message sign(personal_sign & signTypedData).

This function for :

ETHEREUM (ETH) - ethereum
ETHEREUM_GOERLI (ETHt) - etheruem goerli
RSK (RBTC)- rsk smart bitcoin
RSK_TESTNET (RBTCt) - rsk smart bitcoin testnet
XDC (XDC) - xdc network
XDC_APOTHEM (XDCt) - xdc apothem
BSC (BNB) - binance smart chain
BSC_TESTNET (BNBt) - binance smart chain testnet
POLYGON (MATIC) - polygon
POLYGON_TESTNET (MATICt) - polygon testnet
ETH_CHAIN - other evm networks
KLAYTN (KLAY) - klaytn
KLAY_BAOBAB (KLAYt) - klaytn baobab

Parameters

Parameter Type Description

Parameter	Type	Description
coinType	`CoinType`	coin type.
transaction	EthMesageSignData	ethereum message sign data parameters.
command	`String`	data sign command.(`"msg_sign"` \| `"sign_data"`) - `"msg_sign"` for personal_sign or 'eth_sign' of EVM - `"sign_data"` for signTypedData(EIP-721) of EVM

coinType

CoinType

coin type.

transaction

EthMesageSignData

ethereum message sign data parameters.

command

String

data sign command.("msg_sign" | "sign_data") - "msg_sign" for personal_sign or 'eth_sign' of EVM - "sign_data" for signTypedData(EIP-721) of EVM

class EthMessageSignData

Name Type Description

Name	Type	Description
hdKeyPath	`Bip44KeyPath`	sign key path for ethereum sign data transaction
data	`String`	message for signing

hdKeyPath

Bip44KeyPath

sign key path for ethereum sign data transaction

data

String

message for signing

Returns

HashMap<String, String> - signedData{address,sign}

Requirements

D'CENT Biometric Wallet version 1.3.0. or higher is required.
- (for EIP-721) version 2.11.1. or higher is required.

Example(ethereum personal_sign)

EthMesageSignData ethMesageSignData;
ethMesageSignData = new EthMesageSignData.Builder()
                    	.keyPath(Bip44KeyPath.valueOf("m/44'/60'/0'/0/0"))
                    	.data("Message Sign TEST")
                    	.build();
HashMap<String, String> response = mDcentmanager.getEthereumMessageSigned(CoinType.ETHEREUM, ethMesageSignData, "msg_sign");
String address = response.get("address");
String sign = response.get("sign");

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Last updated 9 months ago