Hash Function (Vyper Code Example)

Vyper supports the same hash function available in Solidity, keccack256.

# pragma version ^0.4.0

@external
@pure
def get_hash(addr: address, num: uint256, ) -> bytes32:
    # input of keccak256 can be String, Bytes or bytes32
    return keccak256(
        # convert different data into Bytes
        concat(
            convert(addr, bytes32),
            convert(num, bytes32),
            convert("THIS IS A STRING", Bytes[16])
        )
    )

@external
@pure
def get_message_hash(str: String[100]) -> bytes32:
    return keccak256(str)

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