Ethereum & EVM compatible

getEthereumSignedTransaction

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

This function for :

• .ETHEREUM - ethereum (ETH)

• .ETH_CLASSIC - ethereum classic (ETC)

• .ETH_KOVAN - ethereum kovan (ETHt)

• .ETH_ROPSTEN - ethereum ropsten (ETHt)

• .ETH_GOERLI - ethereum goerli (ETHt)

• .ETH_RINKEBY - ethereum rinkeby (ETHt)

• .FLR_COSTON - flare network coston (CFLR)

• .RSK - rsk smart bitcoin (RBTC)

• .RSK_TESTNET - rsk smart bitcoin testnet (RBTCt)

• .XDC - xcd network (XDC)

• .XDC_APOTHEM - xdc apothem (XDCt)

• .BSC - binance smart chain (BNB)

• .BSC_TESTNET - binance smart chain testnet (BNBt)

• .POLYGON - polygon (MATIC)

• .POLYGON_TESTNET - polygon testnet (MATICt)

• .CHAN - other evm networks

Parameters

• coinType: ethereum networks coin type

• ethereumTransaction: (EthereumTransation)ethereum transaction parameter

class EthereumTransaction

Name	Type	Description
addressPath	String	sign key path for ethereum transaction
nonce	String	account nonce for ethereum transaction
to	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	String	chain id
symbol	String	symbol for ethereum transaction symbol value used for evm chain (.CHAN)
txType	String	(optional)Type of ethereum transaction
maxPriorityFpg	String	(optional)max_priority_fpg of ethereum transaction
maxFeePerGas	String	(optional)max_fee_per gas of ethereum transaction
accessList	String	(optional)access_list of ethereum transaction

Returns

• result: (Bool) true if successful, false if error occurred

• txData: signed transaction

Requirements

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

Example

let ethereumTransaction : EthereumTransaction = EthereumTransaction( addressPath:"", nonce:"", to:"", amount:"", gasLimit:"", gasPrice:"", data:"", chainId:"0" )
  
// test data
ethereumTransaction.addressPath = "m/44'/60'/0'/0/0"
ethereumTransaction.nonce = "14"
ethereumTransaction.to = "0xe5c23dAa6480e45141647E5AeB321832150a28D4"
ethereumTransaction.amount = "500000000000000"
ethereumTransaction.gasLimit = "21000"
ethereumTransaction.gasPrice = "6000000000"
ethereumTransaction.data = "0x"
ethereumTransaction.chainId = "1"
  
DcentMgr.getEthereumSignedTransaction(coinType:.ETHEREUM , ethereumTransaction:ethereumTransaction){ (result, txData) in
    print("Ethereum Transaction closure")
    if result == false {
        print("FAIL !!!")
    }else{
        print(txData)
    }
}

getTokenSignedTransaction

This fuction for :

• .ERC20 - ethereum erc20 token

• .ETC_ERC20 - ethereum classic erc20 token

• .ERC20_KOVAN - ethereum kovan erc20 token(ETH

• .ERC20_ROPSTEN - ethereum ropsten erc20 token

• .ERC20_GOERLI - ethereum goerli erc20 token

• .ERC20_RINKEBY - ethereum rinkeby erc20 token

• .FLR20_COSTON - flare network coston token

• .RRC20 - rsk smart bitcoin rrc20 token

• .RRC20_TESTNET - rsk smart bitcoin testnet rrc20 token

• .XRC20 - xcd network xrc20 token

• .XRC20_APOTHEM - xdc apothem xrc20 token

• .BEP20 - binance smart chain bep20 token

• .BEP20_TESTNET - binance smart chain testnet bep20 token

• .POLYGON_ERC20 - polygon erc20 token

• .POLY_ERC20_TEST - polygon testnet erc20 token

• .CH20 - other evm networks erc20 token

Parameters

• coinType: erc20 type

• tokenTransaction: (TokenTransation)erc20 token transaction parameter

class TokenTransaction

Name	Type	Description
addressPath	String	sign key path for ethereum transaction
nonce	String	account nonce for ethereum transaction
to	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 ERC20 transaction
chainId	String	chain id
symbol	String	symbol of fee account for ERC20 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
tokenSymbol	String	symbol of contract for ERC20 transaction

Returns

• result: (Bool) true if successful, false if error occurred

• txData: signed transaction

Requirements

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

Example

let erc20Transaction : TokenTransaction = TokenTransaction(addressPath: "", nonce: "", to: "", amount: "", gasLimit: "", gasPrice: "", data: "", tokenName: "", contractAddress: "", decimals: "", tokenSymbol: "")
  
// test data
erc20Transaction.addressPath = "m/44'/60'/0'/0/0"
erc20Transaction.nonce = "14"
erc20Transaction.to = "0xe5c23dAa6480e45141647E5AeB321832150a28D4"
erc20Transaction.amount = "60000000000000000"
erc20Transaction.gasLimit = "70000"
erc20Transaction.gasPrice = "3000000000"
erc20Transaction.data = ""
erc20Transaction.chainId = "1"
erc20Transaction.tokenName = "OmiseGO"
erc20Transaction.contractAddress = "0xd26114cd6ee289accf82350c8d8487fedb8a0c07"
erc20Transaction.decimals = "18"
erc20Transaction.tokenSymbol = "OMG"
  
DDcentMgr.getTokenSignedTransaction(coinType:.ERC20, tokenTransaction:erc20Transaction){ (result, txData) in
    print("ERC20 Token Transaction closure")
    if result == false {
        print("FAIL !!!")
    }else{
        print(txData)
    }
}

getMessageSign

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

This fuction for :

• .ETHEREUM - ethereum (ETH)

• .ETH_CLASSIC - ethereum classic (ETC). ??

• .ETH_KOVAN - ethereum kovan (ETHt)

• .ETH_ROPSTEN - ethereum ropsten (ETHt)

• .ETH_GOERLI - ethereum goerli (ETHt)

• .ETH_RINKEBY - ethereum rinkeby (ETHt)

• .FLR_COSTON - flare network coston (CFLR) ??

• .RSK - rsk smart bitcoin (RBTC)

• .RSK_TESTNET - rsk smart bitcoin testnet (RBTCt)

• .XDC - xcd network (XDC)

• .XDC_APOTHEM - xdc apothem (XDCt)

• .BSC - binance smart chain (BNB)

• .BSC_TESTNET - binance smart chain testnet (BNBt)

• .POLYGON - polygon (MATIC)

• .POLYGON_TESTNET - polygon testnet (MATICt)

• .CHAN - other evm networks

• .KLAYTN - klaytn mainnet (KLAY)

• .KLAYTN_TESTNET - klaytn baobab (KLAYt)

Parameters

• coinType: EVM coin type

• messageSign: (MessageSign)evm message sign data parameter

• isFull: (Bool) true for personal sign or the_sign of EVM / false for signTypedDatt(EIP-721) of EVM

class MessageSign

Name	Type	Description
message	String	message for sigining
key	String	sign key path for evm message sign

Returns

• result: (Bool) true if successful, false if error occurred

• addr: the address used to sign the data

• sign: signed data

Example

let messageSign : MessageSign = MessageSign(message: "sign TEST!!", key: "m/44'/60'/0'/0/0")
DcentMgr.getMessgaeSign(coin: .ETHEREUM, messageSign: messageSign, isFull: false) { (result, addr, sign) in
    if result == false {
        print("FAIL !!!")
    }else{
        print(addr)
	print(sign)
    }
}