77 lines
1.9 KiB
JavaScript
77 lines
1.9 KiB
JavaScript
'use strict';
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var crypto = require('crypto');
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var ursa = require('ursa');
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var forge = require('node-forge');
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function binstr2b64(binstr) {
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return new Buffer(binstr, 'binary').toString('base64');
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}
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function toAcmePrivateKey(privkeyPem) {
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var forgePrivkey = forge.pki.privateKeyFromPem(privkeyPem);
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return {
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kty: "RSA"
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, n: binstr2b64(forgePrivkey.n)
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, e: binstr2b64(forgePrivkey.e)
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, d: binstr2b64(forgePrivkey.d)
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, p: binstr2b64(forgePrivkey.p)
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, q: binstr2b64(forgePrivkey.q)
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, dp: binstr2b64(forgePrivkey.dP)
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, dq: binstr2b64(forgePrivkey.dQ)
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, qi: binstr2b64(forgePrivkey.qInv)
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};
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}
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function generateRsaKeypair(bitlen, exp, cb) {
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var keypair = ursa.generatePrivateKey(bitlen /*|| 2048*/, exp /*65537*/);
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var pems = {
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publicKeyPem: keypair.toPublicPem().toString('ascii') // ascii PEM: ----BEGIN...
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, privateKeyPem: keypair.toPrivatePem().toString('ascii') // ascii PEM: ----BEGIN...
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};
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// I would have chosen sha1 or sha2... but whatever
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pems.publicKeyMd5 = crypto.createHash('md5').update(pems.publicKeyPem).digest('hex');
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// json { n: ..., e: ..., iq: ..., etc }
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pems.privateKeyJwk = toAcmePrivateKey(pems.privateKeyPem);
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pems.privateKeyJson = pems.privateKeyJwk;
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// TODO thumbprint
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cb(null, pems);
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}
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function parseAccountPrivateKey(pkj, cb) {
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Object.keys(pkj).forEach(function (key) {
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pkj[key] = new Buffer(pkj[key], 'base64');
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});
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var priv;
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try {
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priv = ursa.createPrivateKeyFromComponents(
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pkj.n // modulus
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, pkj.e // exponent
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, pkj.p
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, pkj.q
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, pkj.dp
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, pkj.dq
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, pkj.qi
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, pkj.d
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);
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} catch(e) {
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cb(e);
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return;
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}
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cb(null, {
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privateKeyPem: priv.toPrivatePem.toString('ascii')
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, publicKeyPem: priv.toPublicPem.toString('ascii')
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});
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}
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module.exports.parseAccountPrivateKey = parseAccountPrivateKey;
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module.exports.generateRsaKeypair = generateRsaKeypair;
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module.exports.toAcmePrivateKey = toAcmePrivateKey;
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