Hash Data
There are many different hashing algorithms exposed in the util-crypto package.
Blake2
Keccak
sha512
for all of them see here
Example of Blake2 hashing
const { blake2AsHex } = require('@polkadot/util-crypto');
const hash = blake2AsHex("data goes here")
console.log(hash)
//result: { hash: '0xce73267ed8316b4350672f32ba49af86a7ae7af1267beb868a27f3fda03c044a' }