/*
 * ISC License (ISC)
 * Copyright 2021 aeternity developers
 *
 *  Permission to use, copy, modify, and/or distribute this software for any
 *  purpose with or without fee is hereby granted, provided that the above
 *  copyright notice and this permission notice appear in all copies.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
 *  REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 *  AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
 *  INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 *  LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
 *  OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 *  PERFORMANCE OF THIS SOFTWARE.
 */

import { blake2b } from 'blakejs'
import type { Data } from 'blakejs'

/**
 * Calculate 256bits Blake2b hash of `input`
 * @rtype (input: String) => hash: String
 * @param {Data} input - Data to hash
 * @return {Buffer} Hash
 */
export function hash (input: Data): Buffer {
  return Buffer.from(blake2b(input, null, 32)) // 256 bits
}