90 lines
3.1 KiB
JavaScript
90 lines
3.1 KiB
JavaScript
/*
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Copyright 2018 0KIMS association.
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This file is part of snarkJS.
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snarkJS is a free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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snarkJS is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with snarkJS. If not, see <https://www.gnu.org/licenses/>.
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*/
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import * as utils from "./powersoftau_utils.js";
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import * as binFileUtils from "@iden3/binfileutils";
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export default async function exportJson(pTauFilename, verbose) {
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const {fd, sections} = await binFileUtils.readBinFile(pTauFilename, "ptau", 1);
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const {curve, power} = await utils.readPTauHeader(fd, sections);
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const pTau = {};
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pTau.q = curve.q;
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pTau.power = power;
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pTau.contributions = await utils.readContributions(fd, curve, sections);
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pTau.tauG1 = await exportSection(2, "G1", (2 ** power)*2 -1, "tauG1");
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pTau.tauG2 = await exportSection(3, "G2", (2 ** power), "tauG2");
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pTau.alphaTauG1 = await exportSection(4, "G1", (2 ** power), "alphaTauG1");
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pTau.betaTauG1 = await exportSection(5, "G1", (2 ** power), "betaTauG1");
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pTau.betaG2 = await exportSection(6, "G2", 1, "betaG2");
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pTau.lTauG1 = await exportLagrange(12, "G1", "lTauG1");
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pTau.lTauG2 = await exportLagrange(13, "G2", "lTauG2");
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pTau.lAlphaTauG1 = await exportLagrange(14, "G1", "lAlphaTauG2");
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pTau.lBetaTauG1 = await exportLagrange(15, "G1", "lBetaTauG2");
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await fd.close();
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return pTau;
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async function exportSection(sectionId, groupName, nPoints, sectionName) {
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const G = curve[groupName];
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const sG = G.F.n8*2;
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const res = [];
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await binFileUtils.startReadUniqueSection(fd, sections, sectionId);
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for (let i=0; i< nPoints; i++) {
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if ((verbose)&&i&&(i%10000 == 0)) console.log(`${sectionName}: ` + i);
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const buff = await fd.read(sG);
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res.push(G.fromRprLEM(buff, 0));
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}
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await binFileUtils.endReadSection(fd);
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return res;
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}
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async function exportLagrange(sectionId, groupName, sectionName) {
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const G = curve[groupName];
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const sG = G.F.n8*2;
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const res = [];
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await binFileUtils.startReadUniqueSection(fd, sections, sectionId);
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for (let p=0; p<=power; p++) {
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if (verbose) console.log(`${sectionName}: Power: ${p}`);
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res[p] = [];
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const nPoints = (2 ** p);
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for (let i=0; i<nPoints; i++) {
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if ((verbose)&&i&&(i%10000 == 0)) console.log(`${sectionName}: ${i}/${nPoints}`);
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const buff = await fd.read(sG);
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res[p].push(G.fromRprLEM(buff, 0));
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}
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}
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await binFileUtils.endReadSection(fd);
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return res;
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}
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}
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