23 lines
604 B
JavaScript
23 lines
604 B
JavaScript
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const snarkjs = require("@tornado/snarkjs");
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const bigInt = snarkjs.bigInt;
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module.exports = function hexBits(cir, witness, sig, nBits) {
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let v = bigInt(0);
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for (let i=nBits-1; i>=0; i--) {
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v = v.shiftLeft(1);
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const name = sig+"["+i+"]";
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const idx = cir.getSignalIdx(name);
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const vbit = bigInt(witness[idx].toString());
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if (vbit.equals(bigInt(1))) {
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v = v.add(bigInt(1));
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} else if (vbit.equals(bigInt(0))) {
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v;
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} else {
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console.log("Not Binary: "+name);
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}
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}
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return v.toString(16);
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};
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