multiparty / jigg Goto Github PK

JavaScript implementation of garbled gates and 2PC boolean circuit protocols

License: Other

JavaScript 100.00%

cybersecurity garbled-circuits javascript javascript-library mpc multi-party multi-party-computation multiparty multiparty-computation privacy-enhancing-technologies web-security

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victorcaidatavant themighty1 pqcfox fabriclabs martindale

jigg's Issues

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

Does jigg support Bristol format or Bristol fashion?

Hi, the README.md says
JIGG can parse a circuit in the standardized 'Bristol Format'
but tutorial/intro.md says
In particular, JIGG accepts circuits specified using the Bristol Fashion.

Is it both?

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)

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?

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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	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);
	};