@steemit/steem-js/lib/auth/ecc/src/hash.js

JavaScript library for the Steem blockchain

"use strict";

const createHash = require('create-hash');
const createHmac = require('create-hmac');

/** @arg {string|Buffer} data
    @arg {string} [digest = null] - 'hex', 'binary' or 'base64'
    @return {string|Buffer} - Buffer when digest is null, or string
*/
function sha1(data, encoding) {
  return createHash('sha1').update(data).digest(encoding);
}

/** @arg {string|Buffer} data
    @arg {string} [digest = null] - 'hex', 'binary' or 'base64'
    @return {string|Buffer} - Buffer when digest is null, or string
*/
function sha256(data, encoding) {
  return createHash('sha256').update(data).digest(encoding);
}

/** @arg {string|Buffer} data
    @arg {string} [digest = null] - 'hex', 'binary' or 'base64'
    @return {string|Buffer} - Buffer when digest is null, or string
*/
function sha512(data, encoding) {
  return createHash('sha512').update(data).digest(encoding);
}
function HmacSHA256(buffer, secret) {
  return createHmac('sha256', secret).update(buffer).digest();
}
function ripemd160(data) {
  return createHash('rmd160').update(data).digest();
}

// function hash160(buffer) {
//   return ripemd160(sha256(buffer))
// }
// 
// function hash256(buffer) {
//   return sha256(sha256(buffer))
// }

// 
// function HmacSHA512(buffer, secret) {
//   return crypto.createHmac('sha512', secret).update(buffer).digest()
// }

module.exports = {
  sha1: sha1,
  sha256: sha256,
  sha512: sha512,
  HmacSHA256: HmacSHA256,
  ripemd160: ripemd160
  // hash160: hash160,
  // hash256: hash256,
  // HmacSHA512: HmacSHA512
};