forked from coolaj86/bluecrypt-keypairs.js
WIP acme accounts
This commit is contained in:
parent
959d2ff009
commit
3156229e2c
9
app.js
9
app.js
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@ -49,10 +49,19 @@ function run() {
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$('.js-jwk').hidden = false;
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$$('input').map(function ($el) { $el.disabled = false; });
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$$('button').map(function ($el) { $el.disabled = false; });
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$('.js-toc-jwk').hidden = false;
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});
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});
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$('form.js-acme-account').addEventListener('submit', function (ev) {
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ev.preventDefault();
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ev.stopPropagation();
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$('.js-loading').hidden = false;
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ACME.accounts.create
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});
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$('.js-generate').hidden = false;
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$('.js-create-account').hidden = false;
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}
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window.addEventListener('load', run);
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21
index.html
21
index.html
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@ -43,10 +43,29 @@
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<label for="-modlen5">4096</label>
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</div>
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<button class="js-generate" hidden>Generate</button>
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<form>
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</form>
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<h2>ACME Account</h2>
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<form class="js-acme-account">
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<label for="-acmeEmail">Email:</label>
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<input class="js-email" type="email" id="-acmeEmail">
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<button class="js-create-account" hidden>Create Account</button>
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</form>
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<div class="js-loading" hidden>Loading</div>
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<details class="js-toc-jwk" hidden>
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<summary>JWK Keypair</summary>
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<pre><code class="js-jwk"> </code></pre>
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</details>
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<details class="js-toc-acme-account-request" hidden>
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<summary>ACME Account Request</summary>
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<pre><code class="js-acme-account-request"> </code></pre>
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</details>
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<details class="js-toc-acme-account-response" hidden>
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<summary>ACME Account Response</summary>
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<pre><code class="js-acme-account-response"> </code></pre>
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</details>
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<script src="./lib/ecdsa.js"></script>
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<script src="./lib/rsa.js"></script>
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28
lib/acme.js
28
lib/acme.js
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@ -7,6 +7,7 @@
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/* globals Promise */
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var ACME = exports.ACME = {};
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var Keypairs = exports.Keypairs || {};
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var Enc = exports.Enc || {};
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var Crypto = exports.Crypto || {};
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@ -120,7 +121,21 @@ ACME._registerAccount = function (me, options) {
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return;
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}
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var jwk = me.RSA.exportPublicJwk(options.accountKeypair);
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var jwk = options.accountKeypair.privateKeyJwk;
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var p;
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if (jwk) {
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p = Promise.resolve({ private: jwk, public: Keypairs.neuter(jwk) });
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} else {
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p = Keypairs.import({ pem: options.accountKeypair.privateKeyPem });
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}
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return p.then(function (pair) {
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if (pair.public.kid) {
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pair = JSON.parse(JSON.stringify(pair));
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delete pair.public.kid;
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delete pair.private.kid;
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}
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return pair;
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}).then(function (pair) {
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var contact;
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if (options.contact) {
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contact = options.contact.slice(0);
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@ -133,25 +148,25 @@ ACME._registerAccount = function (me, options) {
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, contact: contact
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};
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if (options.externalAccount) {
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// TODO is this really done by HMAC or is it arbitrary?
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body.externalAccountBinding = me.RSA.signJws(
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// TODO is HMAC the standard, or is this arbitrary?
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options.externalAccount.secret
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, undefined
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, { alg: "HS256"
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, { alg: options.externalAccount.alg || "HS256"
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, kid: options.externalAccount.id
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, url: me._directoryUrls.newAccount
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}
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, Buffer.from(JSON.stringify(jwk))
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, Buffer.from(JSON.stringify(pair.public))
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);
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}
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var payload = JSON.stringify(body);
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var jws = me.RSA.signJws(
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var jws = Keypairs.signJws(
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options.accountKeypair
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, undefined
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, { nonce: me._nonce
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, alg: (me._alg || 'RS256')
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, url: me._directoryUrls.newAccount
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, jwk: jwk
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, jwk: pair.public
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}
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, Buffer.from(payload)
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);
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@ -193,6 +208,7 @@ ACME._registerAccount = function (me, options) {
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account.key.kid = me._kid;
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return account;
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}).then(resolve, reject);
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});
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}
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if (me.debug) { console.debug('[acme-v2] agreeToTerms'); }
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@ -0,0 +1,127 @@
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;(function (exports) {
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'use strict';
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if (!exports.ASN1) { exports.ASN1 = {}; }
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if (!exports.Enc) { exports.Enc = {}; }
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if (!exports.PEM) { exports.PEM = {}; }
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var ASN1 = exports.ASN1;
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var Enc = exports.Enc;
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var PEM = exports.PEM;
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//
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// Packer
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//
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// Almost every ASN.1 type that's important for CSR
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// can be represented generically with only a few rules.
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exports.ASN1 = function ASN1(/*type, hexstrings...*/) {
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var args = Array.prototype.slice.call(arguments);
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var typ = args.shift();
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var str = args.join('').replace(/\s+/g, '').toLowerCase();
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var len = (str.length/2);
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var lenlen = 0;
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var hex = typ;
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// We can't have an odd number of hex chars
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if (len !== Math.round(len)) {
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throw new Error("invalid hex");
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}
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// The first byte of any ASN.1 sequence is the type (Sequence, Integer, etc)
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// The second byte is either the size of the value, or the size of its size
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// 1. If the second byte is < 0x80 (128) it is considered the size
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// 2. If it is > 0x80 then it describes the number of bytes of the size
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// ex: 0x82 means the next 2 bytes describe the size of the value
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// 3. The special case of exactly 0x80 is "indefinite" length (to end-of-file)
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if (len > 127) {
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lenlen += 1;
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while (len > 255) {
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lenlen += 1;
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len = len >> 8;
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}
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}
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if (lenlen) { hex += Enc.numToHex(0x80 + lenlen); }
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return hex + Enc.numToHex(str.length/2) + str;
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};
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// The Integer type has some special rules
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ASN1.UInt = function UINT() {
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var str = Array.prototype.slice.call(arguments).join('');
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var first = parseInt(str.slice(0, 2), 16);
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// If the first byte is 0x80 or greater, the number is considered negative
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// Therefore we add a '00' prefix if the 0x80 bit is set
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if (0x80 & first) { str = '00' + str; }
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return ASN1('02', str);
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};
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// The Bit String type also has a special rule
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ASN1.BitStr = function BITSTR() {
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var str = Array.prototype.slice.call(arguments).join('');
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// '00' is a mask of how many bits of the next byte to ignore
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return ASN1('03', '00' + str);
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};
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ASN1.pack = function (arr) {
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var typ = Enc.numToHex(arr[0]);
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var str = '';
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if (Array.isArray(arr[1])) {
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arr[1].forEach(function (a) {
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str += ASN1.pack(a);
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});
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} else if ('string' === typeof arr[1]) {
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str = arr[1];
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} else {
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throw new Error("unexpected array");
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}
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if ('03' === typ) {
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return ASN1.BitStr(str);
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} else if ('02' === typ) {
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return ASN1.UInt(str);
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} else {
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return ASN1(typ, str);
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}
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};
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Object.keys(ASN1).forEach(function (k) {
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exports.ASN1[k] = ASN1[k];
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});
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ASN1 = exports.ASN1;
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PEM.packBlock = function (opts) {
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// TODO allow for headers?
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return '-----BEGIN ' + opts.type + '-----\n'
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+ Enc.bufToBase64(opts.bytes).match(/.{1,64}/g).join('\n') + '\n'
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+ '-----END ' + opts.type + '-----'
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;
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};
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Enc.bufToBase64 = function (u8) {
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var bin = '';
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u8.forEach(function (i) {
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bin += String.fromCharCode(i);
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});
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return btoa(bin);
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};
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Enc.hexToBuf = function (hex) {
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var arr = [];
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hex.match(/.{2}/g).forEach(function (h) {
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arr.push(parseInt(h, 16));
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});
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return 'undefined' !== typeof Uint8Array ? new Uint8Array(arr) : arr;
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};
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Enc.numToHex = function (d) {
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d = d.toString(16);
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if (d.length % 2) {
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return '0' + d;
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}
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return d;
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};
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}('undefined' !== typeof window ? window : module.exports));
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@ -0,0 +1,161 @@
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// Copyright 2018 AJ ONeal. All rights reserved
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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;(function (exports) {
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'use strict';
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if (!exports.ASN1) { exports.ASN1 = {}; }
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if (!exports.Enc) { exports.Enc = {}; }
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if (!exports.PEM) { exports.PEM = {}; }
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var ASN1 = exports.ASN1;
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var Enc = exports.Enc;
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var PEM = exports.PEM;
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//
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// Parser
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//
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// Although I've only seen 9 max in https certificates themselves,
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// but each domain list could have up to 100
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ASN1.ELOOPN = 102;
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ASN1.ELOOP = "uASN1.js Error: iterated over " + ASN1.ELOOPN + "+ elements (probably a malformed file)";
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// I've seen https certificates go 29 deep
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ASN1.EDEEPN = 60;
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ASN1.EDEEP = "uASN1.js Error: element nested " + ASN1.EDEEPN + "+ layers deep (probably a malformed file)";
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// Container Types are Sequence 0x30, Container Array? (0xA0, 0xA1)
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// Value Types are Boolean 0x01, Integer 0x02, Null 0x05, Object ID 0x06, String 0x0C, 0x16, 0x13, 0x1e Value Array? (0x82)
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// Bit String (0x03) and Octet String (0x04) may be values or containers
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// Sometimes Bit String is used as a container (RSA Pub Spki)
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ASN1.CTYPES = [ 0x30, 0x31, 0xa0, 0xa1 ];
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ASN1.VTYPES = [ 0x01, 0x02, 0x05, 0x06, 0x0c, 0x82 ];
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ASN1.parse = function parseAsn1Helper(buf) {
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//var ws = ' ';
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function parseAsn1(buf, depth, eager) {
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if (depth.length >= ASN1.EDEEPN) { throw new Error(ASN1.EDEEP); }
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var index = 2; // we know, at minimum, data starts after type (0) and lengthSize (1)
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var asn1 = { type: buf[0], lengthSize: 0, length: buf[1] };
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var child;
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var iters = 0;
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var adjust = 0;
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var adjustedLen;
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// Determine how many bytes the length uses, and what it is
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if (0x80 & asn1.length) {
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asn1.lengthSize = 0x7f & asn1.length;
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// I think that buf->hex->int solves the problem of Endianness... not sure
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asn1.length = parseInt(Enc.bufToHex(buf.slice(index, index + asn1.lengthSize)), 16);
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index += asn1.lengthSize;
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}
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// High-order bit Integers have a leading 0x00 to signify that they are positive.
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// Bit Streams use the first byte to signify padding, which x.509 doesn't use.
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if (0x00 === buf[index] && (0x02 === asn1.type || 0x03 === asn1.type)) {
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// However, 0x00 on its own is a valid number
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if (asn1.length > 1) {
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index += 1;
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adjust = -1;
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}
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}
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adjustedLen = asn1.length + adjust;
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//console.warn(depth.join(ws) + '0x' + Enc.numToHex(asn1.type), index, 'len:', asn1.length, asn1);
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function parseChildren(eager) {
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asn1.children = [];
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//console.warn('1 len:', (2 + asn1.lengthSize + asn1.length), 'idx:', index, 'clen:', 0);
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while (iters < ASN1.ELOOPN && index < (2 + asn1.length + asn1.lengthSize)) {
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iters += 1;
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depth.length += 1;
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child = parseAsn1(buf.slice(index, index + adjustedLen), depth, eager);
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depth.length -= 1;
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// The numbers don't match up exactly and I don't remember why...
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// probably something with adjustedLen or some such, but the tests pass
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index += (2 + child.lengthSize + child.length);
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//console.warn('2 len:', (2 + asn1.lengthSize + asn1.length), 'idx:', index, 'clen:', (2 + child.lengthSize + child.length));
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if (index > (2 + asn1.lengthSize + asn1.length)) {
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if (!eager) { console.error(JSON.stringify(asn1, ASN1._replacer, 2)); }
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throw new Error("Parse error: child value length (" + child.length
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+ ") is greater than remaining parent length (" + (asn1.length - index)
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+ " = " + asn1.length + " - " + index + ")");
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}
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asn1.children.push(child);
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//console.warn(depth.join(ws) + '0x' + Enc.numToHex(asn1.type), index, 'len:', asn1.length, asn1);
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}
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if (index !== (2 + asn1.lengthSize + asn1.length)) {
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//console.warn('index:', index, 'length:', (2 + asn1.lengthSize + asn1.length));
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throw new Error("premature end-of-file");
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}
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if (iters >= ASN1.ELOOPN) { throw new Error(ASN1.ELOOP); }
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delete asn1.value;
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return asn1;
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}
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// Recurse into types that are _always_ containers
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if (-1 !== ASN1.CTYPES.indexOf(asn1.type)) { return parseChildren(eager); }
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// Return types that are _always_ values
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asn1.value = buf.slice(index, index + adjustedLen);
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if (-1 !== ASN1.VTYPES.indexOf(asn1.type)) { return asn1; }
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// For ambigious / unknown types, recurse and return on failure
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// (and return child array size to zero)
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try { return parseChildren(true); }
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catch(e) { asn1.children.length = 0; return asn1; }
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}
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var asn1 = parseAsn1(buf, []);
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var len = buf.byteLength || buf.length;
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if (len !== 2 + asn1.lengthSize + asn1.length) {
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throw new Error("Length of buffer does not match length of ASN.1 sequence.");
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}
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return asn1;
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};
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ASN1._replacer = function (k, v) {
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if ('type' === k) { return '0x' + Enc.numToHex(v); }
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if (v && 'value' === k) { return '0x' + Enc.bufToHex(v.data || v); }
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return v;
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};
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// don't replace the full parseBlock, if it exists
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PEM.parseBlock = PEM.parseBlock || function (str) {
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var der = str.split(/\n/).filter(function (line) {
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return !/-----/.test(line);
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}).join('');
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return { der: Enc.base64ToBuf(der) };
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};
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Enc.base64ToBuf = function (b64) {
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return Enc.binToBuf(atob(b64));
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};
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Enc.binToBuf = function (bin) {
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var arr = bin.split('').map(function (ch) {
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return ch.charCodeAt(0);
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});
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return 'undefined' !== typeof Uint8Array ? new Uint8Array(arr) : arr;
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};
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Enc.bufToHex = function (u8) {
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var hex = [];
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var i, h;
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var len = (u8.byteLength || u8.length);
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for (i = 0; i < len; i += 1) {
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h = u8[i].toString(16);
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if (h.length % 2) { h = '0' + h; }
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hex.push(h);
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}
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return hex.join('').toLowerCase();
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};
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Enc.numToHex = function (d) {
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d = d.toString(16);
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if (d.length % 2) {
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return '0' + d;
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}
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return d;
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};
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}('undefined' !== typeof window ? window : module.exports));
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175
lib/keypairs.js
175
lib/keypairs.js
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@ -5,6 +5,7 @@
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var Keypairs = exports.Keypairs = {};
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var Rasha = exports.Rasha || require('rasha');
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var Eckles = exports.Eckles || require('eckles');
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var Enc = exports.Enc || {};
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Keypairs._stance = "We take the stance that if you're knowledgeable enough to"
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+ " properly and securely use non-standard crypto then you shouldn't need Bluecrypt anyway.";
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@ -76,6 +77,163 @@ Keypairs.publish = function (opts) {
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return Keypairs.thumbprint({ jwk: jwk }).then(function (thumb) { jwk.kid = thumb; return jwk; });
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};
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// JWT a.k.a. JWS with Claims using Compact Serialization
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Keypairs.signJwt = function (opts) {
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||||
return Keypairs.thumbprint({ jwk: opts.jwk }).then(function (thumb) {
|
||||
var header = opts.header || {};
|
||||
var claims = JSON.parse(JSON.stringify(opts.claims || {}));
|
||||
header.typ = 'JWT';
|
||||
|
||||
if (!header.kid) { header.kid = thumb; }
|
||||
if (!header.alg && opts.alg) { header.alg = opts.alg; }
|
||||
if (!claims.iat && (false === claims.iat || false === opts.iat)) {
|
||||
claims.iat = undefined;
|
||||
} else if (!claims.iat) {
|
||||
claims.iat = Math.round(Date.now()/1000);
|
||||
}
|
||||
|
||||
if (opts.exp) {
|
||||
claims.exp = setTime(opts.exp);
|
||||
} else if (!claims.exp && (false === claims.exp || false === opts.exp)) {
|
||||
claims.exp = undefined;
|
||||
} else if (!claims.exp) {
|
||||
throw new Error("opts.claims.exp should be the expiration date as seconds, human form (i.e. '1h' or '15m') or false");
|
||||
}
|
||||
|
||||
if (opts.iss) { claims.iss = opts.iss; }
|
||||
if (!claims.iss && (false === claims.iss || false === opts.iss)) {
|
||||
claims.iss = undefined;
|
||||
} else if (!claims.iss) {
|
||||
throw new Error("opts.claims.iss should be in the form of https://example.com/, a secure OIDC base url");
|
||||
}
|
||||
|
||||
return Keypairs.signJws({
|
||||
jwk: opts.jwk
|
||||
, pem: opts.pem
|
||||
, protected: header
|
||||
, header: undefined
|
||||
, payload: claims
|
||||
}).then(function (jws) {
|
||||
return [ jws.protected, jws.payload, jws.signature ].join('.');
|
||||
});
|
||||
});
|
||||
};
|
||||
|
||||
Keypairs.signJws = function (opts) {
|
||||
return Keypairs.thumbprint(opts).then(function (thumb) {
|
||||
|
||||
function alg() {
|
||||
if (!opts.jwk) {
|
||||
throw new Error("opts.jwk must exist and must declare 'typ'");
|
||||
}
|
||||
return ('RSA' === opts.jwk.kty) ? "RS256" : "ES256";
|
||||
}
|
||||
|
||||
function sign(pem) {
|
||||
var header = opts.header;
|
||||
var protect = opts.protected;
|
||||
var payload = opts.payload;
|
||||
|
||||
// Compute JWS signature
|
||||
var protectedHeader = "";
|
||||
// Because unprotected headers are allowed, regrettably...
|
||||
// https://stackoverflow.com/a/46288694
|
||||
if (false !== protect) {
|
||||
if (!protect) { protect = {}; }
|
||||
if (!protect.alg) { protect.alg = alg(); }
|
||||
// There's a particular request where Let's Encrypt explicitly doesn't use a kid
|
||||
if (!protect.kid && false !== protect.kid) { protect.kid = thumb; }
|
||||
protectedHeader = JSON.stringify(protect);
|
||||
}
|
||||
|
||||
// Not sure how to handle the empty case since ACME POST-as-GET must be empty
|
||||
//if (!payload) {
|
||||
// throw new Error("opts.payload should be JSON, string, or ArrayBuffer (it may be empty, but that must be explicit)");
|
||||
//}
|
||||
// Trying to detect if it's a plain object (not Buffer, ArrayBuffer, Array, Uint8Array, etc)
|
||||
if (payload && ('string' !== typeof payload)
|
||||
&& ('undefined' === typeof payload.byteLength)
|
||||
&& ('undefined' === typeof payload.byteLength)
|
||||
) {
|
||||
payload = JSON.stringify(payload);
|
||||
}
|
||||
// Converting to a buffer, even if it was just converted to a string
|
||||
if ('string' === typeof payload) {
|
||||
payload = Enc.binToBuf(payload);
|
||||
}
|
||||
|
||||
// node specifies RSA-SHAxxx even when it's actually ecdsa (it's all encoded x509 shasums anyway)
|
||||
var nodeAlg = "SHA" + (((protect||header).alg||'').replace(/^[^\d]+/, '')||'256');
|
||||
var protected64 = Enc.strToUrlBase64(protectedHeader);
|
||||
var payload64 = Enc.bufToUrlBase64(payload);
|
||||
var binsig = require('crypto')
|
||||
.createSign(nodeAlg)
|
||||
.update(protect ? (protected64 + "." + payload64) : payload64)
|
||||
.sign(pem)
|
||||
;
|
||||
if ('EC' === opts.jwk.kty) {
|
||||
// ECDSA JWT signatures differ from "normal" ECDSA signatures
|
||||
// https://tools.ietf.org/html/rfc7518#section-3.4
|
||||
binsig = convertIfEcdsa(binsig);
|
||||
}
|
||||
|
||||
var sig = binsig.toString('base64')
|
||||
.replace(/\+/g, '-')
|
||||
.replace(/\//g, '_')
|
||||
.replace(/=/g, '')
|
||||
;
|
||||
|
||||
return {
|
||||
header: header
|
||||
, protected: protected64 || undefined
|
||||
, payload: payload64
|
||||
, signature: sig
|
||||
};
|
||||
}
|
||||
|
||||
function convertIfEcdsa(binsig) {
|
||||
// should have asn1 sequence header of 0x30
|
||||
if (0x30 !== binsig[0]) { throw new Error("Impossible EC SHA head marker"); }
|
||||
var index = 2; // first ecdsa "R" header byte
|
||||
var len = binsig[1];
|
||||
var lenlen = 0;
|
||||
// Seek length of length if length is greater than 127 (i.e. two 512-bit / 64-byte R and S values)
|
||||
if (0x80 & len) {
|
||||
lenlen = len - 0x80; // should be exactly 1
|
||||
len = binsig[2]; // should be <= 130 (two 64-bit SHA-512s, plus padding)
|
||||
index += lenlen;
|
||||
}
|
||||
// should be of BigInt type
|
||||
if (0x02 !== binsig[index]) { throw new Error("Impossible EC SHA R marker"); }
|
||||
index += 1;
|
||||
|
||||
var rlen = binsig[index];
|
||||
var bits = 32;
|
||||
if (rlen > 49) {
|
||||
bits = 64;
|
||||
} else if (rlen > 33) {
|
||||
bits = 48;
|
||||
}
|
||||
var r = binsig.slice(index + 1, index + 1 + rlen).toString('hex');
|
||||
var slen = binsig[index + 1 + rlen + 1]; // skip header and read length
|
||||
var s = binsig.slice(index + 1 + rlen + 1 + 1).toString('hex');
|
||||
if (2 *slen !== s.length) { throw new Error("Impossible EC SHA S length"); }
|
||||
// There may be one byte of padding on either
|
||||
while (r.length < 2*bits) { r = '00' + r; }
|
||||
while (s.length < 2*bits) { s = '00' + s; }
|
||||
if (2*(bits+1) === r.length) { r = r.slice(2); }
|
||||
if (2*(bits+1) === s.length) { s = s.slice(2); }
|
||||
return Enc.hexToBuf(r + s);
|
||||
}
|
||||
|
||||
if (opts.pem && opts.jwk) {
|
||||
return sign(opts.pem);
|
||||
} else {
|
||||
return Keypairs.export({ jwk: opts.jwk }).then(sign);
|
||||
}
|
||||
});
|
||||
};
|
||||
|
||||
function setTime(time) {
|
||||
if ('number' === typeof time) { return time; }
|
||||
|
||||
|
|
@ -106,4 +264,21 @@ function setTime(time) {
|
|||
return now + (mult * num);
|
||||
}
|
||||
|
||||
Enc.hexToBuf = function (hex) {
|
||||
var arr = [];
|
||||
hex.match(/.{2}/g).forEach(function (h) {
|
||||
arr.push(parseInt(h, 16));
|
||||
});
|
||||
return 'undefined' !== typeof Uint8Array ? new Uint8Array(arr) : arr;
|
||||
};
|
||||
Enc.strToUrlBase64 = function (str) {
|
||||
return Enc.bufToUrlBase64(Enc.binToBuf(str));
|
||||
};
|
||||
Enc.binToBuf = function (bin) {
|
||||
var arr = bin.split('').map(function (ch) {
|
||||
return ch.charCodeAt(0);
|
||||
});
|
||||
return 'undefined' !== typeof Uint8Array ? new Uint8Array(arr) : arr;
|
||||
};
|
||||
|
||||
}('undefined' !== typeof module ? module.exports : window));
|
||||
|
|
|
|||
Loading…
Reference in New Issue