solidity-sha3

solidity-sha3

web3.sha3 doesn't always match the behavior of sha3 in Solidity. This one does.

• Hashes integers (default size: uint256)
• Hashes tightly-packed arguments
• Supports hex strings and BigNumber instances

Install

$ npm install --save solidity-sha3

Usage

import sha3 from 'solidity-sha3'

sha3('a') // 0x3ac225168df54212a25c1c01fd35bebfea408fdac2e31ddd6f80a4bbf9a5f1cb
sha3('0x0a') // 0xc65a7bb8d6351c1cf70c95a316cc6a92839c986682d98bc35f958f4883f9d2a8
sha3(1) // 0xb10e2d527612073b26eecdfd717e6a320cf44b4afac2b0732d9fcbe2b7fa0cf6
sha3(new BigNumber('100')) // 0x26700e13983fefbd9cf16da2ed70fa5c6798ac55062a4803121a869731e308d2
sha3('a', 1) // 0xb5cafab5b83d18303877bb912b2d66ca18ab7390cfd9be8a2e66cc5096e0ea02

You can also hash a value at a specific size:

import { sha3withsize } from 'solidity-sha3'

// same as sha3(uint32(1)) in Solidity
sha3withsize(1, 32) // 0x51f81bcdfc324a0dff2b5bec9d92e21cbebc4d5e29d3a3d30de3e03fbeab8d7f

// same as sha3(1) in Solidity
sha3withsize(1, 8) // 0x5fe7f977e71dba2ea1a68e21057beebb9be2ac30c6410aa38d4f3fbe41dcffd2

License

ISC © Raine Revere