@fioprotocol/fiojs/dist/ecc/hash.js

FioJS is a Utility SDK for packing, signing and encryption functionality for the FIO blockchain. It is used by the FIO TypeScript SDK

const createHash = require('create-hash')
const createHmac = require('create-hmac')
const Ripemd160 = require('ripemd160')

/** @namespace hash */

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

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

/** @arg {string|Buffer} data
    @arg {string} [resultEncoding = null] - 'hex', 'binary' or 'base64'
    @return {string|Buffer} - Buffer when resultEncoding is null, or string
*/
function sha512(data, resultEncoding) {
    return createHash('sha512').update(data).digest(resultEncoding)
}

function HmacSHA256(buffer, secret) {
    return createHmac('sha256', secret).update(buffer).digest()
}

function ripemd160(data) {
    try {
	    return createHash('rmd160').update(data).digest();
    } catch(e) {
	    try {
            return createHash('ripemd160').update(data).digest();
        } catch (e) {
            return new Ripemd160().update(data instanceof Uint8Array ? Buffer.from(data) : 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
}