f3a23e3a39
* Browserify is incredibly high dependency count, so it was removed (esbuild will be added in future commit). * NodeJS now comes with built-in support for testing, so mocha and chai are no longer required, removing most dependencies from this project. * eslint isn't necessary for an unmaintained project, and can be used on a per-developer basis. * package is only used to get version, which is useless and an unnecessary security risk. * yargs brings in 16 dependencies and can be replaced with minimist which is just 1. * normalized transitive dependencies of big-integer to all the same version. These changes get us down to 5 dependencies total, with only one being relevant at runtime. Also removes usage of `assert` and `Buffer`, which are NodeJS things. Fixes a minor bug in `stringifybigint` that was incorrectly checking if something was a native `bigint`.
74 lines
1.7 KiB
JavaScript
74 lines
1.7 KiB
JavaScript
const {unstringifyBigInts} = require("./stringifybigint.js");
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const fs = require("fs");
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const assert = require("assert");
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const process = require("node:process")
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var argv = require('minimist')(process.argv.slice(2), { boolean: ['h', 'help'] });
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if (argv.help || argv.h) {
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console.log(`node buildpkey.js -i "witness.json" -o "witness.bin"
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-i --input default: witness.json
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-o --output default: witness.bin
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-h --help
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Copyright (C) 2018 0kims association
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This program comes with ABSOLUTELY NO WARRANTY;
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This is free software, and you are welcome to redistribute it under certain conditions;
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see the COPYING file in the official repo directory at https://github.com/iden3/circom`)
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process.exit()
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}
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const inputName = argv.input || argv.i || "witness.json";
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const outputName = argv.output || argv.o || "witness.bin";
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const witness = unstringifyBigInts(JSON.parse(fs.readFileSync(inputName, "utf8")));
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function writeUint32(h, val) {
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h.dataView.setUint32(h.offset, val, true);
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h.offset += 4;
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}
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function writeBigInt(h, bi) {
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for (let i=0; i<8; i++) {
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const v = bi.shiftRight(i*32).and(0xFFFFFFFF).toJSNumber();
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writeUint32(h, v);
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}
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}
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function calculateBuffLen(witness) {
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let size = 0;
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// beta2, delta2
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size += witness.length * 32;
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return size;
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}
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const buffLen = calculateBuffLen(witness);
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const buff = new ArrayBuffer(buffLen);
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const h = {
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dataView: new DataView(buff),
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offset: 0
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};
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// writeUint32(h, witness.length);
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for (let i=0; i<witness.length; i++) {
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writeBigInt(h, witness[i]);
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}
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assert.equal(h.offset, buffLen);
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var wstream = fs.createWriteStream(outputName);
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wstream.write(Buffer.from(buff));
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wstream.end();
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