https://github.com/fedejinich/hhego

Hybrid Homomorphic Encryption Scheme written in go
https://github.com/fedejinich/hhego

Last synced: 11 days ago
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Hybrid Homomorphic Encryption Scheme written in go

• Host: GitHub
• URL: https://github.com/fedejinich/hhego
• Owner: fedejinich
• Created: 2023-05-09T01:27:46.000Z (almost 2 years ago)
• Default Branch: master
• Last Pushed: 2023-11-23T16:13:14.000Z (about 1 year ago)
• Last Synced: 2023-11-23T17:24:54.701Z (about 1 year ago)
• Language: Go
• Size: 331 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# hhego

`hhego` is a monorepo for all Go-based tools used as part of the HHE (Hybrid Homomorphic Encryption) Proof of Concept. 

### Components

- **bfv**: `lattigo` wrapper, designed to create hybrid homomorphic encryption schemes.

- **pasta**: contains PASTA symmetric cipher.

- **js**: A script for generating votes in the `fhBallot` project.

- **jni**: Java bindings to integrate it with `rskj`.

- **workspace**: a place for small tests. 

The goal of `hhego` is to integrate these components with `rskj`, enabling support for hybrid homomorphic encryption on Rootstock.

## Installation and Usage

### JNI

The JNI component enables the use of `bfv` in Java applications, in this PoC we use it to integrate it with `rskj` and use it as a precompiled contract.

To build this library, use the following command:

```bash

make macos

```

The output should be `libbfv_jni.dylib`, a dynamic library for mac.

##### Bash Script

There's also a bash script that builds and copies the output to `rskj`.

```bash

./build_jni_mac.sh

```

### JS 

The JS component includes a Go script designed to generate encrypted votes for the `fhBallot` project. To execute this script, run:

```bash

go run votes.go

```

This script produces a JSON output with the following structure:

```json

{

    "votes": [[1, 0, 0, 0], [0, 1, 0, 0]], // Generated votes

    "votesPasta": [[30447, 62405, 62714, 38763], [30446, 62406, 62714, 38763]], // Encrypted votes using PASTA

    "pastaSK": [1, 1, 1, 1, 1], // BFV-encrypted PASTA secret key

	"rk": [1, 1, 1, 1, 1], // Relinearization key (for converting PASTA votes to BFV votes)

	"bfvSK": [1, 1, 1, 1, 1] // BFV secret key (used for encrypting PASTA SK)

}

```

##### Bash Script

There's also a bash script that builds and copies the output to `rskj`.

```bash

./generate_votes.sh

```