Merge branch 'develop' of github.com:JacobEberhardt/ZoKrates into stabilize-ci
This commit is contained in:
schaeff
commit
6e972a6ab6
5 changed files with 25 additions and 138 deletions
|
|
@ -27,6 +27,9 @@ jobs:
|
|||
- run:
|
||||
name: Run tests
|
||||
command: LIBSNARK_SOURCE_PATH=$HOME/libsnark cargo test --release
|
||||
- run:
|
||||
name: Run integration tests
|
||||
command: LIBSNARK_SOURCE_PATH=$HOME/libsnark cargo test --release -- --ignored
|
||||
- save_cache:
|
||||
paths:
|
||||
- /usr/local/cargo/registry
|
||||
|
|
|
|||
145
README.md
145
README.md
|
|
@ -1,3 +1,6 @@
|
|||
|
||||
<img src="http://www.redaktion.tu-berlin.de/fileadmin/fg308/icons/projekte/logos/ZoKrates_logo.svg" width="100%" height="180">
|
||||
|
||||
# Zokrates
|
||||
|
||||
[](https://gitter.im/ZoKrates/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
|
||||
|
|
@ -9,143 +12,19 @@ Zokrates is a toolbox for zkSNARKs on Ethereum.
|
|||
|
||||
_This is a proof-of-concept implementation. It has not been tested for production._
|
||||
|
||||
# Motivation
|
||||
## Getting Started
|
||||
|
||||
Ethereum runs computations on all nodes of the network, resulting in high costs, limits in complexity, and low privacy.
|
||||
SNARKs have been enabling to only verify computations on-chain for a fraction of the cost of running them, but are hard to grasp and work with.
|
||||
Have a look at the documentation [zokrates.github.io](https://zokrates.github.io/) for more informations about using Zokrates.
|
||||
A getting started tutorial can be found [here](https://zokrates.github.io/sha256example.html).
|
||||
|
||||
Zokrates bridges this gap. It helps you create offchain programs and link them to the Ethereum blockchain, expanding the possibilities for your Dapp.
|
||||
## Getting Help
|
||||
|
||||
# Installation
|
||||
If you run into problems, Zokrates has a Gitter room. You can come ask for help at [gitter.im/ZoKrates/Lobby](https://gitter.im/ZoKrates/Lobby).
|
||||
|
||||
Using Docker is currently the recommended way to get started with Zokrates.
|
||||
## License
|
||||
|
||||
```bash
|
||||
docker run -ti zokrates/zokrates /bin/bash
|
||||
```
|
||||
Or build yourself with the following commands.
|
||||
```bash
|
||||
git clone https://github.com/JacobEberhardt/ZoKrates
|
||||
cd ZoKrates
|
||||
docker build -t zokrates .
|
||||
docker run -ti zokrates /bin/bash
|
||||
cd ZoKrates/target/release
|
||||
```
|
||||
ZoKrates is released under the GNU Lesser General Public License v3.
|
||||
|
||||
## Contributing
|
||||
|
||||
# Example
|
||||
|
||||
First, create the textfile `add.code` and implement your program:
|
||||
```
|
||||
def main(field a, field b, field c) -> (field):
|
||||
return a + b + c
|
||||
```
|
||||
The keyword `field` declares the type of the parameters used as elements of the underlying finite field.
|
||||
|
||||
Then run the different phases of the protocol:
|
||||
```
|
||||
./zokrates compile -i 'add.code'
|
||||
./zokrates setup
|
||||
./zokrates compute-witness -a 1 2 3
|
||||
./zokrates generate-proof
|
||||
./zokrates export-verifier
|
||||
```
|
||||
|
||||
# API reference
|
||||
|
||||
Zokrates provides a command line interface.
|
||||
You can see an overview of the available subcommands by running
|
||||
|
||||
```
|
||||
./zokrates
|
||||
```
|
||||
|
||||
#### `compile`
|
||||
```
|
||||
./zokrates compile -i /path/to/add.code
|
||||
```
|
||||
|
||||
Compiles a `.code` file into ZoKrates internal representation of arithmetic circuits.
|
||||
|
||||
Creates a compiled `.code` file at `./out.code`.
|
||||
|
||||
#### `compute-witness`
|
||||
```
|
||||
./zokrates compute-witness -a 1 2 3
|
||||
```
|
||||
|
||||
Computes a witness for the compiled program found at `./out.code` and arguments to the program.
|
||||
A witness is a valid assignment of the variables, which include the results of the computation.
|
||||
|
||||
Creates a witness file at `./witness`
|
||||
|
||||
#### `setup`
|
||||
```
|
||||
./zokrates setup
|
||||
```
|
||||
|
||||
Generates a trusted setup for the compiled program found at `./out.code`.
|
||||
|
||||
Creates a proving key and a verifying key at `./proving.key` and `./verifying.key`.
|
||||
These keys are derived from a source of randomness, commonly referred to as “toxic waste”. Anyone having access to the source of randomness can produce fake proofs that will be accepted by a verifier following the protocol.
|
||||
|
||||
#### `export-verifier`
|
||||
```
|
||||
./zokrates export-verifier
|
||||
```
|
||||
|
||||
Using the verifying key at `./verifying.key`, generates a Solidity contract which contains the generated verification key and a public function to verify a solution to the compiled program at `./out.code`.
|
||||
|
||||
Creates a verifier contract at `./verifier.sol`.
|
||||
|
||||
#### `generate-proof`
|
||||
```
|
||||
./zokrates generate-proof
|
||||
```
|
||||
|
||||
Using the proving key at `./proving.key`, generates a proof for a computation of the compiled program `./out.code` resulting in `./witness`.
|
||||
|
||||
Returns the proof, for example:
|
||||
```
|
||||
A = 0x45582d7906c967b1fd1cac0aad3efefa526e4cd888b8ecb5907b46c2eb1f781, 0x8158089a63a6aafa4afc3bbfd5ebf392e5ef61d0c5faf2e2445c9112450f29c
|
||||
A_p = 0x5e4fe0bfa79a571b8918138ee5d7b3d0ad394c9bb8f7d2e1549f7e3c3bab7e9, 0x1708b5ba3d138e433406c792f679ae6902fc9f7c6131305a9a5f826dbe2d71fb
|
||||
B = [0x34f5c5b7518597452e55a69bf9171a63837a98a1c1c1870b610b2cfe79c4573, 0x18e56afd179d67960db838a8fdb128eb78d5dd2c1ffcd564f9d0dada928ed71f], [0xf160ea8d2dc33b564a45c0998309b4bf5a050cc8f6288793b7401b37d1eb1a2, 0x23ade8ba2c64300b5ff90e18641516407054a21179829252fd87f1bd61a3be34]
|
||||
B_p = 0xc88b87d45f90da42b9c455da16dad76996ef5b1e859a4f0db7dcef4f7e3b2fd, 0x20ed7c62dd8c6c47506e6db1d4837daa42ae80b931227153054539dcbf6f3778
|
||||
C = 0x2c230cbffbcb6211d2cf8f434df291a413721e3bef5ada4030d532d14b6ea504, 0x21421565f75429d0922c8cf00b68e4da23c61670e787ce6a5de14a5a86ebdcb0
|
||||
C_p = 0xce11fe724ce1ce183c15c4f5405d9607d6c769422aa9f62f4868478324a2f5, 0x1e585b35ed22ef32fd70ef960818f1514d1dd94b3517c127e782de24173c69f9
|
||||
H = 0x2306e74a1a7e318d2d3c40cbea708b0e0b91cd1548c9db6261fc2bd815740978, 0xde538e4e99b0e20e84cdbbd3bc08c37bca0af21edd67faf52bc4027a9b00f7c
|
||||
K = 0x1868436121f271e9fbf78a8f75bb4077e2d4f208891793fd5b468afc3b05c0e4, 0x1021c3ecb15c3fd7340d4eb5bf446e1ad457020e4f8b7cc82f8af64507a35fbe
|
||||
```
|
||||
|
||||
Passed to the verifier contract, this proof can be checked.
|
||||
For example, using `web3`, a call would look like the following:
|
||||
```
|
||||
Verifier.at(<verifier contract address>).verifyTx(A, A_p, B, B_p, C, C_p, H, K, [...publicInputs, ...outputs])
|
||||
```
|
||||
|
||||
Where `A, ..., K` are defined as above (adding brackets and quotes: `A = ["0x123", "0x345"]`), `publicInputs` are the public inputs supplied to witness generation and `outputs` are the results of the computation.
|
||||
|
||||
# Contributing
|
||||
|
||||
Want to contribute to ZoKrates? Great!
|
||||
First, fork this repository.
|
||||
|
||||
Then, install `rustfmt`
|
||||
```
|
||||
rustup component add rustfmt-preview
|
||||
```
|
||||
|
||||
Make sure you're using rust nightly.
|
||||
|
||||
Then, run normal tests with
|
||||
```
|
||||
cargo test
|
||||
```
|
||||
and run long and expensive tests with
|
||||
```
|
||||
cargo test -- --ignored
|
||||
```
|
||||
|
||||
Finally, before pushing your changes, make sure to run `cargo +nightly fmt` to format your code.
|
||||
|
||||
Thank you for contributing to ZoKrates!
|
||||
Unless you explicitly state otherwise, any contribution you intentionally submit for inclusion in the work shall be licensed as above, without any additional terms or conditions.
|
||||
|
|
|
|||
|
|
@ -10,6 +10,7 @@
|
|||
- [Functions](./concepts/functions.md)
|
||||
- [Control flow](./concepts/control_flow.md)
|
||||
- [Comments](./concepts/comments.md)
|
||||
- [Standard Library](./concepts/stdlib.md)
|
||||
|
||||
- [Reference](reference/index.md)
|
||||
- [CLI](reference/cli.md)
|
||||
|
|
|
|||
|
|
@ -117,8 +117,10 @@ mod test {
|
|||
&mut r,
|
||||
Some(String::from("./path/to/file")),
|
||||
None::<
|
||||
fn(&Option<String>, &String)
|
||||
-> Result<(BufReader<Empty>, String, String), io::Error>,
|
||||
fn(
|
||||
&Option<String>,
|
||||
&String,
|
||||
) -> Result<(BufReader<Empty>, String, String), io::Error>,
|
||||
>,
|
||||
);
|
||||
assert_eq!(
|
||||
|
|
@ -140,8 +142,10 @@ mod test {
|
|||
&mut r,
|
||||
Some(String::from("./path/to/file")),
|
||||
None::<
|
||||
fn(&Option<String>, &String)
|
||||
-> Result<(BufReader<Empty>, String, String), io::Error>,
|
||||
fn(
|
||||
&Option<String>,
|
||||
&String,
|
||||
) -> Result<(BufReader<Empty>, String, String), io::Error>,
|
||||
>,
|
||||
);
|
||||
assert!(res.is_ok());
|
||||
|
|
|
|||
|
|
@ -5,7 +5,7 @@ extern crate lazy_static;
|
|||
extern crate num;
|
||||
extern crate num_bigint;
|
||||
extern crate reduce; // better reduce function than Iter.fold
|
||||
extern crate serde; // serialization deserialization
|
||||
extern crate serde; // serialization deserialization
|
||||
extern crate serde_json;
|
||||
#[macro_use]
|
||||
extern crate serde_derive;
|
||||
|
|
|
|||
Loading…
Reference in a new issue