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https://github.com/everfinance/goether
A simple Ethereum wallet implementation and utilities in Golang
https://github.com/everfinance/goether
blockchain ethereum ethereum-client
Last synced: 6 days ago
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A simple Ethereum wallet implementation and utilities in Golang
- Host: GitHub
- URL: https://github.com/everfinance/goether
- Owner: everFinance
- License: mit
- Created: 2020-12-08T07:36:50.000Z (almost 4 years ago)
- Default Branch: main
- Last Pushed: 2023-07-20T03:52:30.000Z (over 1 year ago)
- Last Synced: 2024-06-20T16:32:53.996Z (5 months ago)
- Topics: blockchain, ethereum, ethereum-client
- Language: Go
- Homepage:
- Size: 56.6 KB
- Stars: 32
- Watchers: 3
- Forks: 6
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# goether
A simple Ethereum wallet implementation and utilities in Golang.
## Install
```shell
go get -u github.com/everFinance/goether
```
## Examples
[More examples...](./example)
Send Eth with data
```golang
prvHex := "your prvkey"
rpc := "https://infura.io/v3/{{InfuraKey}}"
testWallet, err := goether.NewWallet(prvHex, rpc)
if err != nil {
panic(err)
}
// default send DynamicFeeTx
txHash, err := testWallet.SendTx(
common.HexToAddress("0xa06b79E655Db7D7C3B3E7B2ccEEb068c3259d0C9"), // To
goether.EthToBN(0.12), // Value
[]byte("123"), // Data
nil)
// send with opts
nonce := int(1)
gasLimit := int(999999)
txHash, err := testWallet.SendTx(
common.HexToAddress("0xa06b79E655Db7D7C3B3E7B2ccEEb068c3259d0C9"),
goether.EthToBN(0.12),
[]byte("123"),
&goether.TxOpts{ // Configure nonce/gas yourself
Nonce: &nonce,
GasLimit: &gasLimit,
GasPrice: goether.GweiToBN(10),
})
```
Contract Interaction
```golang
abi := `[{"constant": true,"inputs": [{"name": "","type": "address"}],"name": "balanceOf","outputs": [{"name": "","type": "uint256"}],"payable": false,"stateMutability": "view","type": "function"},{"constant": false,"inputs": [{"name": "dst","type": "address"},{"name": "wad","type": "uint256"}],"name": "transfer","outputs": [{"name": "","type": "bool"}],"payable": false,"stateMutability": "nonpayable","type": "function"}]`
contractAddr := common.HexToAddress("contract address")
prvHex := "your prvkey"
rpc := "https://kovan.infura.io/v3/{{InfuraKey}}"
// init contract instance with wallet
testWallet, _ := goether.NewWallet(prvHex, rpc)
testContract, err := goether.NewContract(contractAddr, abi, rpc, testWallet)
if err != nil {
panic(err)
}
// ERC20 BalanceOf
amount, err := testContract.CallMethod(
"balanceOf", // Method name
"latest", // Tag
common.HexToAddress("0xa06b79e655db7d7c3b3e7b2cceeb068c3259d0c9")) // Args
// ERC20 Transfer
txHash, err := testContract.ExecMethod(
"transfer", // Method name
&goether.TxOpts{ // Configure nonce/gas yourself, nil load params from eth-node
Nonce: &nonce,
GasLimit: &gasLimit,
GasPrice: goether.GweiToBN(10),
},
common.HexToAddress("0xab6c371B6c466BcF14d4003601951e5873dF2AcA"), // Args
big.NewInt(100))
```
## Modules
### Signer
Ethereum Account which can be used to sign messages and transactions.
- [x] NewSignerFromMnemonic
- [x] SignTx
- [x] SignMsg
- [x] SignTypedData
- [x] GetPublicKey
- [x] GetPublicKeyHex
- [x] GetPrivateKey
- [x] Decrypt
### Wallet
Connect to Ethereum Network, execute state changing operations.
- [x] SendTx
- [x] SendLegacyTx
- [x] GetAddress
- [x] GetBalance
- [x] GetNonce
- [x] GetPendingNonce
### Contract
Creating Contract Instance for call & execute contract.
- [x] CallMethod
- [x] ExecMethod
- [x] EncodeData
- [x] EncodeDataHex
- [x] DecodeData
- [x] DecodeDataHex
- [x] DecodeEvent
- [x] DecodeEventHex
### Utils
- [x] EthToBN
- [x] GweiToBN
- [x] EIP712Hash
- [x] Ecrecover
- [x] Encrypt