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84 lines
3.0 KiB
84 lines
3.0 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 mnemonic = require("../../cryptonote_utils/mnemonic");
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const monero_utils = require("../../").monero_utils;
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function randomBit() {
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// get random 32 bits in hex
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const rand32bits = mnemonic.mn_random(32);
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// take 4 bits "nibble" and convert to binary
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// then take last index
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return monero_utils.padLeft(
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parseInt(rand32bits[0], 16).toString(2),
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4,
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0,
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)[3];
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}
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//Tests for Borromean signatures
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//#boro true one, false one, C != sum Ci, and one out of the range..
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const N = 64;
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let xv = [], // vector of secret keys, 1 per ring (nrings)
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P1v = [], //key64, arr of commitments Ci
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P2v = [], //key64
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indi = []; // vector of secret indexes, 1 per ring (nrings), can be a string
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let indi_2 = [];
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let indi_3 = [];
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let indi_4 = [];
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let generated = false;
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function generate_parameters() {
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if (generated) {
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const indiCopy = [...indi];
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return { xv, P1v, P2v, indi: indiCopy, N };
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} else {
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for (let j = 0; j < N; j++) {
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indi[j] = randomBit(); /*?.*/
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xv[j] = monero_utils.skGen(); /*?.*/
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if (+indi[j] === 0) {
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P1v[j] = monero_utils.ge_scalarmult_base(xv[j]); /*?.*/
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} else {
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P1v[j] = monero_utils.ge_scalarmult_base(xv[j]); // calculate aG = xv[j].G /*?.*/
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P1v[j] = monero_utils.ge_add(P1v[j], monero_utils.H2[j]); // calculate aG + H2 /*?.*/
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}
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P2v[j] = monero_utils.ge_sub(P1v[j], monero_utils.H2[j]); /*?.*/
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}
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generated = true;
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return { xv, P1v, P2v, indi, N };
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}
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}
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module.exports = { generate_parameters };
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