48 lines
1.2 KiB
JavaScript
48 lines
1.2 KiB
JavaScript
|
|
var crypto = require('crypto')
|
|
|
|
|
|
var base64url = (str) =>
|
|
str.toString('base64').replace(/=/g, '').replace(/\+/g, '-').replace(/\//g, '_')
|
|
|
|
var kid = (jwk) => {
|
|
if (jwk.kid) {
|
|
return jwk.kid
|
|
}
|
|
var keys =
|
|
jwk.kty === 'RSA' ? {e: jwk.e, kty: jwk.kty, n: jwk.n} :
|
|
jwk.kty === 'EC' ? {crv: jwk.crv, kty: jwk.kty, x: jwk.x, y: jwk.y} :
|
|
jwk.kty === 'oct' ? {k: jwk.k, kty: jwk.kty} : undefined
|
|
return keys
|
|
? base64url(crypto.createHash('sha256').update(JSON.stringify(keys)).digest())
|
|
: undefined
|
|
}
|
|
|
|
var x5t = (cert) => {
|
|
var s1 = cert.replace(/(?:-----(?:BEGIN|END) CERTIFICATE-----|\s)/g, '')
|
|
var s2 = Buffer.from(s1, 'base64')
|
|
var s3 = crypto.createHash('sha1').update(s2).digest('hex').toUpperCase()
|
|
return base64url(Buffer.from(s3, 'hex'))
|
|
}
|
|
|
|
var pem = (jwk) => {
|
|
var pem = require('jwk-to-pem')
|
|
return pem(jwk, {private: true})
|
|
}
|
|
|
|
var sign = (jwt) => {
|
|
var jws = require('jws')
|
|
return jws.sign(jwt)
|
|
}
|
|
|
|
var jwt = (str) => {
|
|
var [header, payload, signature] = str.split('.')
|
|
return {
|
|
header: JSON.parse(Buffer.from(header, 'base64').toString('binary')),
|
|
payload: JSON.parse(Buffer.from(payload, 'base64').toString('utf8')),
|
|
signature,
|
|
}
|
|
}
|
|
|
|
module.exports = {base64url, kid, x5t, pem, sign, jwt}
|