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Add RSA keygen example using WebCrypto Api

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This commit is contained in:
Tankred Hase 2014-09-29 22:00:29 +02:00
parent bbe174828f
commit 15edf09972
1 changed files with 60 additions and 3 deletions
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63
src/crypto/public_key/rsa.js
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@ -1,16 +1,16 @@
// GPG4Browsers - An OpenPGP implementation in javascript // GPG4Browsers - An OpenPGP implementation in javascript
// Copyright (C) 2011 Recurity Labs GmbH // Copyright (C) 2011 Recurity Labs GmbH
// //
// This library is free software; you can redistribute it and/or // This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public // modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either // License as published by the Free Software Foundation; either
// version 3.0 of the License, or (at your option) any later version. // version 3.0 of the License, or (at your option) any later version.
// //
// This library is distributed in the hope that it will be useful, // This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of // but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details. // Lesser General Public License for more details.
// //
// You should have received a copy of the GNU Lesser General Public // You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software // License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
@ -134,6 +134,63 @@ function RSA() {
// Generate a new random private key B bits long, using public expt E // Generate a new random private key B bits long, using public expt E
function generate(B, E) { function generate(B, E) {
//
// Web Crypto RSA keygen proposal example
//
if (typeof window !== 'undefined' && window.crypto && window.crypto.subtle) {
var keyGenOpt = {
name: 'RSASSA-PKCS1-v1_5',
modulusLength: B, // the specified keysize in bits
publicExponent: new Uint8Array([0x01, 0x00, 0x01]), // Equivalent to 65537, TODO: use provided argument E
hash: {
name: 'SHA-256' // not required for actual RSA keys, but for crypto api 'sign' and 'verifiy'
}
};
var extractable = true; // make generated key extractable
window.crypto.subtle.generateKey(keyGenOpt, extractable, ['sign', 'verify'])
.then(onGenerated)
.then(onExported);
}
function onGenerated(key) {
// export the generated keys as JsonWebKey (JWK)
// https://tools.ietf.org/html/draft-ietf-jose-json-web-key-33
var p1 = window.crypto.subtle.exportKey('jwk', key.privateKey);
var p2 = window.crypto.subtle.exportKey('jwk', key.publicKey);
return window.Promise.all([p1, p2]);
}
function onExported(exported) {
// Exported JWK has the following encoded parameters: n, p, q, qi, ...
var privKey = exported[0];
var pubKey = exported[1];
console.log('Exported private key: ', privKey);
console.log('Exported public key: ', pubKey);
var d = privKey.d;
var dp = privKey.dp;
var dq = privKey.dq;
var e = privKey.e;
var n = privKey.n;
var p = privKey.p;
var q = privKey.q;
var qi = privKey.qi;
// TODO: map JWK parameters to local BigInteger type system?
// TODO: add async style callback
}
//
// JS code
//
var key = new keyObject(); var key = new keyObject();
var rng = new SecureRandom(); var rng = new SecureRandom();
var qs = B >> 1; var qs = B >> 1;