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What does the AES algorithm do?

hi，

We have a variety of circuits available under circuits/bristol , What does AES-128.txt do? there are two inputs here, are they key and message for AES encryption? there is 1 output，it's length is 128bit, what is the content of this output?

look forward for your reply ,thanks

Potential security issue with incorrect doubling

Doubling is implemented here

jigg/src/modules/label.js

Lines 23 to 29 in afb4af1

Label.prototype.double = function () {
const bytes = this.bytes.slice();
const leastbyte = bytes[0];
bytes.copyWithin(0,1,15); // Logical left shift by 1 byte
bytes[14] = leastbyte; // Restore old least byte as new greatest (non-pointer) byte
return new Label(bytes);
};

This is supposed to be based on the D4 method in Fig6 of the BHKR13 paper https://eprint.iacr.org/2013/426.pdf

But the paper says that this must be "Circular left shift" of BITS, but your code performs a shift of BYTES.
Maybe this does not introduce an exploitable attack vector but definitely the implementation is not in line with the paper.
Is this a bug or was this done on purpose to avoid bit shifting?

Error while running `npm test`

Hello, first of all thank you for providing such a good tool so that I don't have to know too much about the principles of MPC and can try to use it。

but when I run it, I find that there is an error, after searching no problem, hope to get your help, thanks

➜  jigg npm test

> [email protected] test ~/workspace/jigg
> mocha test/test.js --timeout 120000



  Exhaustive regular server: logic-and-4-bit.txt
    ✓ Inputs 00 00 (1337ms)
    ✓ Inputs 00 01 (327ms)
    ✓ Inputs 00 10 (326ms)
    ✓ Inputs 00 11 (333ms)
    ✓ Inputs 01 00 (335ms)
    ✓ Inputs 01 01 (325ms)
    ✓ Inputs 01 10 (326ms)
    ✓ Inputs 01 11 (324ms)
    ✓ Inputs 10 00 (332ms)
    ✓ Inputs 10 01 (333ms)
    ✓ Inputs 10 10 (359ms)
    ✓ Inputs 10 11 (340ms)
    ✓ Inputs 11 00 (341ms)
    ✓ Inputs 11 01 (342ms)
    ✓ Inputs 11 10 (343ms)
    ✓ Inputs 11 11 (342ms)

  SHA256 Garbling Server
    1) Input 0
stderr in node [ 'demo/server.js',
  '3001',
  'Garbler',
  '000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F',
  'hex',
  'sha-256-reverse.txt',
  'false' ]
events.js:167
      throw er; // Unhandled 'error' event
      ^

Error: listen EADDRINUSE :::3001
    at Server.setupListenHandle [as _listen2] (net.js:1286:14)
    at listenInCluster (net.js:1334:12)
    at Server.listen (net.js:1421:7)
    at Object.<anonymous> (/Users/linfang/workspace/prove/jigg-master/demo/server.js:21:12)
    at Module._compile (internal/modules/cjs/loader.js:688:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:699:10)
    at Module.load (internal/modules/cjs/loader.js:598:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:537:12)
    at Function.Module._load (internal/modules/cjs/loader.js:529:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:741:12)
Emitted 'error' event at:
    at emitErrorNT (net.js:1313:8)
    at process._tickCallback (internal/process/next_tick.js:63:19)
    at Function.Module.runMain (internal/modules/cjs/loader.js:744:11)
    at startup (internal/bootstrap/node.js:285:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:739:3)

stderr in node [ 'demo/server.js',
  '3001',
  'Garbler',
  '0000000000000000000000000000000000000000000000000000000000000000',
  'hex',
  'sha-256-reverse.txt',
  'false' ]
events.js:173
    throw err; // Unhandled 'error' event
    ^

Error [ERR_UNHANDLED_ERROR]: Unhandled error. (Role already taken!)
    at Socket.emit (events.js:171:17)
    at Socket.emit (~/workspace/jigg/node_modules/socket.io/lib/socket.js:142:10)
    at Server.join (~/workspace/jigg/src/jiggServer.js:52:12)
    at Socket.emit (events.js:182:13)
    at~/workspace/jigg/node_modules/socket.io/lib/socket.js:528:12
    at process._tickCallback (internal/process/next_tick.js:61:11)

socket.io v 4 does not work

Hi, I just wanted to give you a heads-up that the recent socket.io version 4.0.1 wil result in not being able to connect to the server.
Installing an earlier version with e.g. npm install [email protected] resolves the issue.

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