81 lines
2.6 KiB
JavaScript
81 lines
2.6 KiB
JavaScript
// OpenPGP.js - An OpenPGP implementation in javascript
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// Copyright (C) 2015-2016 Decentral
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 3.0 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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/**
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* @fileoverview Wrapper for a KeyPair of an curve from indutny/elliptic library
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* @requires enums
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* @requires asn1.js
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* @module crypto/public_key/elliptic/indutnyKey
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*/
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import { loadScript, dl } from '../../../lightweight_helper';
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import config from '../../../config';
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export function keyFromPrivate(indutnyCurve, priv) {
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const keyPair = indutnyCurve.keyPair({ priv: priv });
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return keyPair;
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}
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export function keyFromPublic(indutnyCurve, pub) {
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const keyPair = indutnyCurve.keyPair({ pub: pub });
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if (keyPair.validate().result !== true) {
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throw new Error('Invalid elliptic public key');
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}
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return keyPair;
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}
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/**
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* Load elliptic on demand to global.openpgp.elliptic
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* @returns {Promise<elliptic>}
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*/
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async function loadEllipticPromise() {
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const path = config.indutnyEllipticPath;
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const options = config.indutnyEllipticFetchOptions;
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const ellipticDlPromise = dl(path, options).catch(() => dl(path, options));
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const ellipticContents = await ellipticDlPromise;
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const mainUrl = URL.createObjectURL(new Blob([ellipticContents], { type: 'text/javascript' }));
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await loadScript(mainUrl);
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URL.revokeObjectURL(mainUrl);
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if (!global.openpgp.elliptic) {
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throw new Error('Elliptic library failed to load correctly');
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}
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return global.openpgp.elliptic;
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}
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let ellipticPromise;
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function loadElliptic() {
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if (!config.externalIndutnyElliptic) {
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return require('elliptic');
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}
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if (!ellipticPromise) {
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ellipticPromise = loadEllipticPromise().catch(e => {
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ellipticPromise = undefined;
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throw e;
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});
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}
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return ellipticPromise;
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}
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export async function getIndutnyCurve(name) {
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if (!config.useIndutnyElliptic) {
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throw new Error('This curve is only supported in the full build of OpenPGP.js');
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}
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const elliptic = await loadElliptic();
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return new elliptic.ec(name);
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}
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