Solidity with Crypto Zombie lesson 1 #11 Keccak256 and Typecasting

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Ethereum has the hash perform keccak256 inbuilt, which is a model of SHA3. A hash perform principally maps an enter right into a random 256-bit hexadecimal quantity. A slight change within the enter will trigger a big change within the hash.

It’s helpful for a lot of functions in Ethereum, however for proper now we’re simply going to make use of it for pseudo-random quantity technology.

Also vital, keccak256 expects a single parameter of sort bytes. This signifies that we have now to “pack” any parameters earlier than calling keccak25
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