bot18
Version:
A high-frequency cryptocurrency trading bot by Zenbot creator @carlos8f
47 lines (34 loc) • 1.7 kB
JavaScript
;
/* ------------------------------------------------------------------------ */
const CryptoJS = require ('crypto-js')
const { capitalize } = require ('./string')
const { stringToBase64, utf16ToBase64, urlencodeBase64 } = require ('./encode')
/* ------------------------------------------------------------------------ */
const hash = (request, hash = 'md5', digest = 'hex') => {
const result = CryptoJS[hash.toUpperCase ()] (request)
return (digest === 'binary') ? result : result.toString (CryptoJS.enc[capitalize (digest)])
}
/* ............................................. */
const hmac = (request, secret, hash = 'sha256', digest = 'hex') => {
const result = CryptoJS['Hmac' + hash.toUpperCase ()] (request, secret)
if (digest) {
const encoding = (digest === 'binary') ? 'Latin1' : capitalize (digest)
return result.toString (CryptoJS.enc[capitalize (encoding)])
}
return result
}
/* ............................................. */
const jwt = function JSON_web_token (request, secret, alg = 'HS256', hash = 'sha256') {
const encodedHeader = urlencodeBase64 (stringToBase64 (JSON.stringify ({ 'alg': alg, 'typ': 'JWT' })))
, encodedData = urlencodeBase64 (stringToBase64 (JSON.stringify (request)))
, token = [ encodedHeader, encodedData ].join ('.')
, signature = urlencodeBase64 (utf16ToBase64 (hmac (token, secret, hash, 'utf16')))
return [ token, signature ].join ('.')
}
/* ------------------------------------------------------------------------ */
module.exports = {
hash,
hmac,
jwt
}
/* ------------------------------------------------------------------------ */