Change license, flesh out README a bit.
* The example should eventually be expanded upon. * The language may need more refinement.
This commit is contained in:
parent
3e6df11c4b
commit
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@ -0,0 +1,47 @@
|
||||||
|
## Contributing
|
||||||
|
|
||||||
|
Thank your for contributing to this project! We welcome collaborators and
|
||||||
|
expect users to follow our [code of conduct](CODE_OF_CONDUCT.md) when
|
||||||
|
submitting code or comments.
|
||||||
|
|
||||||
|
1. [Fork the repo](https://github.com/poanetwork/threshold_crypto/fork).
|
||||||
|
2. Create your feature branch (`git checkout -b my-new-feature`).
|
||||||
|
3. Write tests that cover your work.
|
||||||
|
4. Run Rustfmt, Clippy, and all tests to ensure CI rules are satisfied.
|
||||||
|
Correct versions and feature flags can be found in the
|
||||||
|
[`.travis.yml`](https://github.com/poanetwork/hbbft/blob/master/.travis.yml)
|
||||||
|
file.
|
||||||
|
5. Commit your changes (`git commit -am 'Add some feature'`).
|
||||||
|
6. Push to your branch (`git push origin my-new-feature`).
|
||||||
|
7. Create a new PR (Pull Request).
|
||||||
|
|
||||||
|
### General
|
||||||
|
|
||||||
|
* We strive to follow the [Rust API
|
||||||
|
Guidelines](https://rust-lang-nursery.github.io/api-guidelines/about.html)
|
||||||
|
to maintain consistency and compatibility in our code.
|
||||||
|
* Commits should be one logical change that still allows all tests to pass.
|
||||||
|
We prefer smaller commits if there could be two levels of logic grouping.
|
||||||
|
The goal is to provide future contributors (including your future self) the
|
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|
reasoning behind your changes and allow them to cherry-pick, patch or port
|
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|
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|
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|
* If during your PR you reveal a pre-existing bug and know how to fix it: 1.
|
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|
If you can isolate the bug, fix it in a separate PR. 2. If the fix depends
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|
In either case, try to write a regression test that fails because of the
|
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|
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|
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|
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|
### Issues
|
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|
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|
Creating and discussing [Issues](https://github.com/poanetwork/hbbft/issues)
|
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|
provides significant value to the project. If you find a bug you can report it
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|
### Pull Requests
|
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|
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|
All pull requests should include:
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|
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|
* A clear, readable description of the purpose of the PR
|
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|
* A clear, readable description of changes
|
||||||
|
* Any additional concerns or comments (optional)
|
|
@ -0,0 +1,7 @@
|
||||||
|
threshold_crypto is copyright 2018, POA Networks, Ltd.
|
||||||
|
|
||||||
|
Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
||||||
|
http://www.apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
|
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|
http://opensource.org/licenses/MIT>, at your option. All files in the project
|
||||||
|
carrying such notice may not be copied, modified, or distributed except
|
||||||
|
according to those terms.
|
|
@ -1,12 +1,13 @@
|
||||||
[package]
|
[package]
|
||||||
name = "threshold_crypto"
|
name = "threshold_crypto"
|
||||||
|
# REMINDER: Update version in `README.md` when incrementing:
|
||||||
version = "0.1.0"
|
version = "0.1.0"
|
||||||
authors = ["Andreas Fackler <AndreasFackler@gmx.de>",
|
authors = ["Andreas Fackler <AndreasFackler@gmx.de>",
|
||||||
"Peter van Nostrand <jnz@riseup.net>"]
|
"Peter van Nostrand <jnz@riseup.net>"]
|
||||||
description = "Pairing threshold cryptography"
|
description = "Pairing threshold cryptography"
|
||||||
license = "LGPL-3.0"
|
license = "MIT/Apache-2.0"
|
||||||
repository = "https://github.com/poanetwork/threshold_crypto"
|
repository = "https://github.com/poanetwork/threshold_crypto"
|
||||||
readme = "https://github.com/poanetwork/threshold_crypto/blob/master/README.md"
|
readme = "README.md"
|
||||||
keywords = ["pairing", "threshold"]
|
keywords = ["pairing", "threshold"]
|
||||||
categories = ["cryptography"]
|
categories = ["cryptography"]
|
||||||
|
|
||||||
|
|
|
@ -0,0 +1,201 @@
|
||||||
|
Apache License
|
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|
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http://www.apache.org/licenses/
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APPENDIX: How to apply the Apache License to your work.
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@ -1,6 +1,6 @@
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MIT License
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Copyright (c) 2018 POA Networks, Ltd.
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Copyright (c) 2018, POA Networks, Ltd.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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SOFTWARE.
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THE SOFTWARE.
|
105
README.md
105
README.md
|
@ -1,15 +1,110 @@
|
||||||
# Pairing cryptography and threshold signatures
|
# threshold_crypto
|
||||||
|
|
||||||
[![Build Status](https://travis-ci.org/poanetwork/threshold_crypto.svg?branch=master)](https://travis-ci.org/poanetwork/threshold_crypto)
|
[![Build Status](https://travis-ci.org/poanetwork/threshold_crypto.svg?branch=master)](https://travis-ci.org/poanetwork/threshold_crypto)
|
||||||
|
|
||||||
This crate contains constructions of asymmetric key cryptography and threshold
|
A pairing-based threshold cryptosystem for collaborative decryption and
|
||||||
signatures on top of `pairing` crate.
|
signatures.
|
||||||
|
|
||||||
### Examples
|
Provides constructors for encrypted message handling within a public key
|
||||||
|
encryption system. It utilizes the pairing elliptic curve library to create
|
||||||
|
and enable reconstruction of public and private key shares.
|
||||||
|
|
||||||
You can run a file from the [`examples`](examples) directory using:
|
In a network environment, messages are signed and encrypted, and key and
|
||||||
|
signature shares are distributed to network participants. A message can be
|
||||||
|
decrypted and authenticated only with cooperation from at least `threshold +
|
||||||
|
1` nodes.
|
||||||
|
|
||||||
|
## Usage
|
||||||
|
|
||||||
|
`Cargo.toml`:
|
||||||
|
|
||||||
|
```toml
|
||||||
|
[dependencies]
|
||||||
|
rand = "0.4"
|
||||||
|
threshold_crypto = { version = "0.1", git = "https://github.com/poanetwork/threshold_crypto" }
|
||||||
|
```
|
||||||
|
|
||||||
|
`main.rs`:
|
||||||
|
|
||||||
|
```rust
|
||||||
|
extern crate rand;
|
||||||
|
extern crate threshold_crypto;
|
||||||
|
|
||||||
|
use threshold_crypto::SecretKey;
|
||||||
|
|
||||||
|
/// Very basic secret key usage.
|
||||||
|
fn main() {
|
||||||
|
let sk0: SecretKey = rand::random();
|
||||||
|
let sk1: SecretKey = rand::random();
|
||||||
|
|
||||||
|
let pk0 = sk0.public_key();
|
||||||
|
|
||||||
|
let msg0 = b"Real news";
|
||||||
|
let msg1 = b"Fake news";
|
||||||
|
|
||||||
|
assert!(pk0.verify(&sk0.sign(msg0), msg0));
|
||||||
|
assert!(!pk0.verify(&sk1.sign(msg0), msg0)); // Wrong key.
|
||||||
|
assert!(!pk0.verify(&sk0.sign(msg1), msg0)); // Wrong message.
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
### More Examples
|
||||||
|
|
||||||
|
Run examples from the [`examples`](examples) directory using:
|
||||||
|
|
||||||
```
|
```
|
||||||
$ MLOCK_SECRETS=false cargo run --example <example name>
|
$ MLOCK_SECRETS=false cargo run --example <example name>
|
||||||
```
|
```
|
||||||
|
|
||||||
|
Also see the
|
||||||
|
[distributed_key_generation](https://github.com/poanetwork/threshold_crypto/blob/d81953b55d181311c2a4eed2b6c34059fcf3fdae/src/poly.rs#L967)
|
||||||
|
test.
|
||||||
|
|
||||||
|
## More Details
|
||||||
|
|
||||||
|
The basic usage outline is: choose a threshold value t, create a key set, then
|
||||||
|
distribute N secret key shares among the participants and publish the public
|
||||||
|
master key. A third party can now encrypt a message to the public master key
|
||||||
|
and any set of `t + 1` participants *(but no fewer!)* can collaborate to
|
||||||
|
decrypt it. Also, any `t + 1` participants can collaborate to sign a message,
|
||||||
|
producing a signature that can be verified against the public master key.
|
||||||
|
|
||||||
|
This cryptosystem has the property that signatures are unique, i.e.
|
||||||
|
independent of which particular participants produced it. If `S1` and `S2` are
|
||||||
|
signatures for the same message, produced by two different sets of `t + 1`
|
||||||
|
secret key share holders each, then they won't just both be valid, but in fact
|
||||||
|
equal. This is useful in some applications, for example it allows using the
|
||||||
|
signature of a message as a pseudorandom number that is unknown to anyone
|
||||||
|
until `t + 1` participants agree to reveal it.
|
||||||
|
|
||||||
|
In its simplest form, threshold cryptography requires a trusted dealer who
|
||||||
|
produces the secret key shares and distributes them. However, there are ways
|
||||||
|
to produce the keys themselves in a way that guarantees that nobody except the
|
||||||
|
corresponding participant knows their secret in the end, and this crate
|
||||||
|
includes the basic tools to implement such a *Distributed Key Generation*
|
||||||
|
scheme.
|
||||||
|
|
||||||
|
One major application for this library is within distributed networks that
|
||||||
|
must tolerate up to `t` adversarial (malicious or faulty) nodes. Because `t +
|
||||||
|
1` nodes are required to sign or reveal information, messages can be trusted
|
||||||
|
by third-parties as representing the consensus of the network.
|
||||||
|
|
||||||
|
## License
|
||||||
|
|
||||||
|
Licensed under either of:
|
||||||
|
|
||||||
|
* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
|
||||||
|
* MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
|
||||||
|
|
||||||
|
at your option.
|
||||||
|
|
||||||
|
## Contributing
|
||||||
|
|
||||||
|
See the [CONTRIBUTING](CONTRIBUTING.md) document for contribution, testing and
|
||||||
|
pull request protocol.
|
||||||
|
|
||||||
|
Unless you explicitly state otherwise, any contribution intentionally
|
||||||
|
submitted for inclusion in the work by you, as defined in the Apache-2.0
|
||||||
|
license, shall be dual licensed as above, without any additional terms or
|
||||||
|
conditions.
|
||||||
|
>>>>>>> Change license, flesh out README a bit.
|
||||||
|
|
Loading…
Reference in New Issue