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114 lines
3.6 KiB
114 lines
3.6 KiB
// Copyright (c) 2014-2018, MyMonero.com
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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const monero_utils = require("../").monero_utils;
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it("MG_sigs", () => {
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function skvGen(len) {
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let skVec = [];
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for (let i = 0; i < len; i++) {
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skVec.push(monero_utils.skGen());
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}
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return skVec;
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}
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//initializes a key matrix;
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//first parameter is rows,
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//second is columns
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function keyMInit(rows, cols) {
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let rv = [];
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for (let i = 0; i < cols; i++) {
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rv.push([]);
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}
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return rv;
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}
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let j = 0;
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//Tests for MG Sigs
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//#MG sig: true one
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let N = 3; // cols
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let R = 2; // rows
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let xm = keyMInit(R, N); // = [[None]*N] #just used to generate test public keys
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let sk = skvGen(R);
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// [
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// [pubkey1, commitment1],
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// [pubkey2, commitment2],
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// ...
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// [pubkeyn, commitmentn]]
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// // Gen creates a signature which proves that for some column in the keymatrix "pk"
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// the signer knows a secret key for each row in that column
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let P = keyMInit(R, N); // = keyM[[None]*N] #stores the public keys;
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let ind = 2;
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let i = 0;
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for (j = 0; j < R; j++) {
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for (i = 0; i < N; i++) {
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xm[i][j] = monero_utils.skGen();
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P[i][j] = monero_utils.ge_scalarmult_base(xm[i][j]); // generate fake [pubkey, commit]
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}
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}
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for (j = 0; j < R; j++) {
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// our secret vector of [onetimesec, z]
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sk[j] = xm[ind][j];
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}
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let message = monero_utils.identity();
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let kimg = monero_utils.ge_scalarmult(
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monero_utils.hashToPoint(P[ind][0]),
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sk[0],
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);
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let rv = monero_utils.MLSAG_Gen(message, P, sk, kimg, ind);
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let c = monero_utils.MLSAG_ver(message, P, rv, kimg);
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expect(c).toEqual(true);
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xtmp = skvGen(R);
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xm = keyMInit(R, N); // = [[None]*N] #just used to generate test public keys
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sk = skvGen(R);
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for (j = 0; j < R; j++) {
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for (i = 0; i < N; i++) {
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xm[i][j] = monero_utils.skGen();
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P[i][j] = monero_utils.ge_scalarmult_base(xm[i][j]); // generate fake [pubkey, commit]
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}
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}
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sk[1] = skGen(); //assume we don't know one of the private keys..
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kimg = monero_utils.ge_scalarmult(
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monero_utils.hashToPoint(P[ind][0]),
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sk[0],
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);
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rv = monero_utils.MLSAG_Gen(message, P, sk, kimg, ind);
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c = monero_utils.MLSAG_ver(message, P, rv, kimg);
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expect(c).toEqual(false);
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});
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