ethereum-tx-sign

Allows you to sign Ethereum transactions offline.

```rust // 1 mainnet, 3 ropsten const ETHCHAINID: u32 = 3;

let tx = ethereumtxsign::RawTransaction { nonce: web3::types::U256::from(0), to: Some(web3::types::H160::zero()), value: web3::types::U256::zero(), gas_price: web3::types::U256::from(10000), gas: web3::types::U256::from(21240), data: hex::decode( "7f7465737432000000000000000000000000000000000000000000000000000000600057" ).unwrap(), };

let mut data: [u8; 32] = Default::default(); data.copyfromslice(&hex::decode( "2a3526dd05ad2ebba87673f711ef8c336115254ef8fcd38c4d8166db9a8120e4" ).unwrap()); let privatekey = web3::types::H256(data); let rawrlpbytes = tx.sign(&privatekey, &ETHCHAINID);

let result = "f885808227108252f894000000000000000000000000000000000000000080a\ 47f746573743200000000000000000000000000000000000000000000000000\ 00006000572aa0b4e0309bc4953b1ca0c7eb7c0d15cc812eb4417cbd759aa09\ 3d38cb72851a14ca036e4ee3f3dbb25d6f7b8bd4dac0b4b5c717708d20ae6ff\ 08b6f71cbf0b9ad2f4"; asserteq!(result, hex::encode(rawrlp_bytes)); ```

That's it!