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61 lines
2.3 KiB
JavaScript
61 lines
2.3 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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// Implementation of ECDSA following RFC6637 for Openpgpjs
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/**
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* @requires util
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* @requires crypto/hash
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* @requires crypto/public_key/elliptic/curves
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* @module crypto/public_key/elliptic/ecdsa
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*/
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import util from '../../../util';
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import hash from '../../hash';
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import { get as curvesGet } from './curves';
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/**
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* Sign a message using the provided key
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* @param {module:type/oid} oid Elliptic curve object identifier
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* @param {enums.hash} hash_algo Hash algorithm used to sign
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* @param {Uint8Array} m Message to sign
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* @param {Uint8Array} d Private key used to sign the message
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* @return {{r: BN, s: BN}} Signature of the message
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*/
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async function sign(oid, hash_algo, m, d) {
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const curve = curvesGet(oid);
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const key = curve.keyFromPrivate(d);
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return key.sign(m, hash_algo);
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}
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/**
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* Verifies if a signature is valid for a message
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* @param {module:type/oid} oid Elliptic curve object identifier
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* @param {enums.hash} hash_algo Hash algorithm used in the signature
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* @param {{r: BN, s: BN}} signature Signature to verify
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* @param {Uint8Array} m Message to verify
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* @param {Uint8Array} Q Public key used to verify the message
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* @return {Boolean}
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*/
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async function verify(oid, hash_algo, signature, m, Q) {
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const curve = curvesGet(oid);
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const key = curve.keyFromPublic(Q);
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return key.verify(m, signature, hash_algo);
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}
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export default { sign, verify };
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