ethereum

ethereum-sdk

Ethereum SDK is used to interact with the Ethereum blockchain or Evm blockchains, it contains various functions can be used to web3 wallet.

Installation

go get

To obtain the latest version, simply require the project using :

go get -u github.com/sonr-io/coins/ethereum

Usage

New Address

	p, _ := hex.DecodeString("559376194bb4c9a9dfb33fde4a2ab15daa8a899a3f43dee787046f57d5f7b10a")
	prvKey, _ := btcec.PrivKeyFromBytes(p)
	address := GetNewAddress(prvKey.PubKey())
	addr, err := PubKeyToAddr(prvKey.PubKey().SerializeUncompressed())
	if err != nil {
		// todo
	}

Transfer

	transaction := NewEthTransaction(
		big.NewInt(int64(00)),
		big.NewInt(int64(420000)),
		big.NewInt(int64(200000000000)),
		big.NewInt(int64(100000000000000000)),
		"0x1ca96f8cfe7276bb053b25e57188f1b5ec6a4728", "0x",
	)
	hash, raw, _ := transaction.GetSigningHash(big.NewInt(int64(10)))
	tx, err := transaction.SignTransaction(big.NewInt(int64(10)), prvKey)
	if err != nil {
		// todo
	}

Transfer Token

	transfer, _ := token.Transfer("0x1ca96f8cfe7276bb053b25e57188f1b5ec6a4728", big.NewInt(int64(100000000000000000)))
	transaction := NewEthTransaction(
		big.NewInt(int64(00)),
		big.NewInt(int64(420000)),
		big.NewInt(int64(200000000000)),
		big.NewInt(int64(0)),
		"0x1ca96f8cfe7276bb053b25e57188f1b5ec6a4728", hex.EncodeToString(transfer),
	)
	tx, err := transaction.SignTransaction(big.NewInt(int64(10)), prvKey)
	if err != nil {
		// todo
	}

Sign message

    prv := "49c0722d56d6bac802bdf5c480a17c870d1d18bc4355d8344aa05390eb778280"
    prvB, err := hex.DecodeString(prv)
    assert.NoError(t, err)
    msg := "0x49c0722d56d6bac802bdf5c480a17c870d1d18bc4355d8344aa05390eb778280"
    prvKey, pub := btcec.PrivKeyFromBytes(prvB)
    sig, err := SignEthTypeMessage(msg, prvKey, true)   //true means using the format "\x19Ethereum Signed Message:\n%d%s"
	if err != nil {
	// todo
	}

Verify Signed message

    sig:="d87758593e0b89f8a2deef5e053ce484fe971a75124bf5d89d6f4d4f586604120d0110d03c91260fec9ec917354caae50c1744d246e30ff48def277d7d9aec831b"
    msg:="0x49c0722d56d6bac802bdf5c480a17c870d1d18bc4355d8344aa05390eb778280"
    addr:="0xd74c65ad81aa8537327e9ba943011a8cec7a7b6b"
    err := VerifySignMsg(sig, msg, addr, true) //true means using the format "\x19Ethereum Signed Message:\n%d%s"
    if err != nil {
        // todo
    }

EIP712

    var typedData TypedData
    str := `{"domain":{"name":"AuthTransfer","chainId":1,"verifyingContract":"0x1243C09717e4441341472c4b142B8ac0B71F7672"},"message":{"details":[{"token":"0x0000000000000000000000000000000000000000","expiration":1853395200}],"spenders":["0x1B256B89462710a6b459540B999AbE5771d45A6e"],"nonce":0},"primaryType":"Permits","types":{"EIP712Domain":[{"name":"name","type":"string"},{"name":"chainId","type":"uint256"},{"name":"verifyingContract","type":"address"}],"Permits":[{"name":"details","type":"PermitDetails[]"},{"name":"spenders","type":"address[]"},{"name":"nonce","type":"uint256"}],"PermitDetails":[{"name":"token","type":"address"},{"name":"expiration","type":"uint256"}]}}`
    err := json.Unmarshal([]byte(str), &typedData)
    assert.NoError(t, err)
    hash, str2, err := TypedDataAndHash(typedData)
	if err != nil {
	// todo
	}

Dynamic Fee Tx

	tx := NewEthDynamicFeeTx(big.NewInt(int64(11155111)),
        16,
        big.NewInt(int64(420000)),
        big.NewInt(int64(20000000000)),
        420000,
        big.NewInt(int64(1234)), "2de4898dd458d6dce097e29026d446300e3815fa", "", AccessList{})
    p, _ := hex.DecodeString("5dfce364a4e9020d1bc187c9c14060e1a2f8815b3b0ceb40f45e7e39eb122103")
    prvKey, _ := btcec.PrivKeyFromBytes(p)
    txStr, err := tx.SignTransaction(prvKey)
    if err != nil {
        // todo
    }

Credits This project includes code adapted from the following sources:

• go-ethereum - Ethereum Go SDK

If you are the original author and would like credit adjusted, please contact us.

License

Most packages or folder are MIT licensed, see package or folder for the respective license.