liboqs/README.md

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liboqs
======================
liboqs is an open source C library for quantum-safe cryptographic algorithms.
- [Overview](#overview)
- [Status](#status)
* [Supported Algorithms](#supported-algorithms)
* [Limitatons and Security](#limitations-and-security)
- [Quickstart](#quickstart)
* [Ubuntu/macOS](#ubuntu/macOS)
* [Windows](#windows)
* [Others](#others)
- [Docs](#docs)
- [Contributing](#contributing)
- [License](#license)
- [Acknowledgements](#acknowledgements)
## Overview
liboqs provides:
- a collection of open source implementations of quantum-safe key encapsulation mechanism (KEM) and digital signature algorithms; the full list can be found [below](#supported-algorithms)
- a common API for these algorithms
- a test harness and benchmarking routines
liboqs is part of the **Open Quantum Safe (OQS)** project led by [Douglas Stebila](https://www.douglas.stebila.ca/research/) and [Michele Mosca](http://faculty.iqc.uwaterloo.ca/mmosca/), which aims to develop and integrate into applications quantum-safe cryptography to facilitate deployment and testing in real world contexts. In particular, OQS provides prototype integrations of liboqs into TLS and SSH, through [OpenSSL](https://github.com/open-quantum-safe/openssl) and [OpenSSH](https://github.com/open-quantum-safe/openssh-portable).
More information on OQS can be found [here](https://openquantumsafe.org/) and in the [associated](https://openquantumsafe.org/papers/SAC-SteMos16.pdf) [whitepapers](https://openquantumsafe.org/papers/NISTPQC-CroPaqSte19.pdf).
## Status
### Supported Algorithms
#### Key encapsulation mechanisms
- **BIKE**: BIKE1-L1, BIKE1-L3, BIKE1-L5, BIKE2-L1, BIKE2-L3, BIKE2-L5, BIKE3-L1, BIKE3-L3, BIKE3-L5 (NIST Round 1 version)
- **FrodoKEM**: FrodoKEM-640-AES, FrodoKEM-640-SHAKE, FrodoKEM-976-AES, FrodoKEM-976-SHAKE, FrodoKEM-1344-AES, FrodoKEM-1344-SHAKE
- **Kyber**: Kyber512, Kyber768, Kyber1024
- **NewHope**: NewHope-512-CCA, NewHope-1024-CCA
- **NTRU**: NTRU-HPS-2048-509, NTRU-HPS-2048-677, NTRU-HPS-4096-877, NTRU-HRSS-701
- **SABER**: LightSaber-KEM, Saber-KEM, FireSaber-KEM
- **SIKE**: SIDH-p434, SIDH-p503, SIDH-p610, SIDH-p751, SIKE-p434, SIKE-p503, SIKE-p610, SIKE-p751
#### Signature schemes
- **Dilithium**: Dilithium2, Dilithium3, Dilithium4
- **MQDSS**: MQDSS-31-48, MQDSS-31-64
- **Picnic**: Picnic-L1-FS, Picnic-L1-UR, Picnic-L3-FS, Picnic-L3-UR, Picnic-L5-FS, Picnic-L5-UR, Picnic2-L1-FS, Picnic2-L3-FS, Picnic2-L5-FS
- **qTESLA**: qTESLA-I, qTESLA-III-size, qTESLA-III-speed (NIST Round 1 version)
- **Rainbow**: Rainbow-Ia-Classic, Rainbow-Ia-Cyclic, Rainbow-Ia-Cyclic-Compressed, Rainbow-IIIc-Classic, Rainbow-IIIc-Cyclic, Rainbow-IIIc-Cyclic-Compressed, Rainbow-Vc-Classic, Rainbow-Vc-Cyclic, Rainbow-Vc-Cyclic-Compressed
- **SPHINCS+**: SPHINCS+-Haraka-128f-robust, SPHINCS+-Haraka-128f-simple, SPHINCS+-Haraka-128s-robust, SPHINCS+-Haraka-128s-simple, SPHINCS+-Haraka-192f-robust, SPHINCS+-Haraka-192f-simple, SPHINCS+-Haraka-192s-robust, SPHINCS+-Haraka-192s-simple, SPHINCS+-Haraka-256f-robust, SPHINCS+-Haraka-256f-simple, SPHINCS+-Haraka-256s-robust, SPHINCS+-Haraka-256s-simple, SPHINCS+-SHAKE256-128f-robust, SPHINCS+-SHAKE256-128f-simple, SPHINCS+-SHAKE256-128s-robust, SPHINCS+-SHAKE256-128s-simple, SPHINCS+-SHAKE256-192f-robust, SPHINCS+-SHAKE256-192f-simple, SPHINCS+-SHAKE256-192s-robust, SPHINCS+-SHAKE256-192s-simple, SPHINCS+-SHAKE256-256f-robust, SPHINCS+-SHAKE256-256f-simple, SPHINCS+-SHAKE256-256s-robust, SPHINCS+-SHAKE256-256s-simple
### Limitations and Security
As research advances, the supported algorithms may see rapid changes in their security, and may even prove insecure against both classical and quantum computers.
liboqs does not intend to "pick winners": algorithm support is informed by the NIST [Post-Quantum Cryptography Standardization](https://csrc.nist.gov/Projects/Post-Quantum-Cryptography/Post-Quantum-Cryptography-Standardization) project. We strongly recommend that applications and protocols rely on the outcomes of ths effort when deploying post-quantum cryptography.
We realize some parties may want to deploy quantum-safe cryptography prior to the conclusion of the NIST standardization project. We strongly recommend such attempts make use of so-called **hybrid cryptography**, in which quantum-safe public-key algorithms are used alongside traditional public key algorithms (like RSA or elliptic curves) so that the solution is at least no less secure than existing traditional cryptography.
## Quickstart
### Ubuntu/macOS
0. Install dependencies:
On Ubuntu:
sudo apt install autoconf automake libtool gcc libssl-dev python3-pytest unzip xsltproc doxygen graphviz
On macOS, using a package manager of your choice (we've picked Homebrew):
brew install autoconf automake libtool openssl wget doxygen graphviz
pip3 install pytest
1. Get the source:
git clone -b master https://github.com/open-quantum-safe/liboqs.git
cd liboqs
and build:
autoreconf -i
./configure
make clean
make -j
(If on macOS you encounter an error like `Can't exec "libtoolize": No such file or directory at ...`, try running with `LIBTOOLIZE=glibtoolize autoreconf -i`.)
2. The main build result is `liboqs.a`, a static library. (This may be placed in the `.libs` directory.) There are also a variety of programs built under the `tests` directory:
- `test_kem`: Simple test harness for key encapsulation mechanisms
- `test_sig`: Simple test harness for key signature schemes
- `kat_kem`: Program that generates known answer test (KAT) values for key encapsulation mechanisms using the same procedure as the NIST submission requirements, for checking against submitted KAT values using `tests/test_kat.py`
- `kat_sig`: Program that generates known answer test (KAT) values for signature schemes using the same procedure as the NIST submission requirements, for checking against submitted KAT values using `tests/test_kat.py`
- `speed_kem`: Benchmarking program for key encapsulation mechanisms; see `./speed_kem --help` for usage instructions
- `speed_sig`: Benchmarking program for signature mechanisms; see `./speed_sig --help` for usage instructions
- `example_kem`: Minimal runnable example showing the usage of the KEM API
- `example_sig`: Minimal runnable example showing the usage of the signature API
- `test_aes`, `test_sha3`: Simple test harnesses for crypto sub-components
A range of tests (including all `test_*` and `kat_*` programs above) can be run using
python3 -m pytest
3. To generate HTML documentation of the API, run:
make docs
Then open `docs/doxygen/html/index.html` in your web browser.
### Windows
Binaries can be generated using the Visual Studio solution in the `VisualStudio` folder. The supported schemes are defined in the projects' `winconfig.h` file.
### Others
Instructions for OpenBSD and ARM can be found in the [wiki](https://github.com/open-quantum-safe/liboqs/wiki/Building).
## Docs
Further information can be found in the [wiki](https://github.com/open-quantum-safe/liboqs/wiki).
## Contributing
Contributions that meet the acceptance criteria are gratefully welcomed. See our [Contributing Guide](https://github.com/open-quantum-safe/liboqs/wiki/Contributing-Guide) for more details.
## License
liboqs is licensed under the MIT License; see [LICENSE.txt](https://github.com/open-quantum-safe/liboqs/blob/master/LICENSE.txt) for details.
liboqs includes some third party libraries or modules that are licensed differently; the corresponding subfolder contains the license that applies in that case. In particular:
- `src/crypto/aes/aes_c.c`: public domain
- `src/crypto/sha3/fips202.c`: CC0 (public domain)
- `src/crypto/sha3/keccak4x`: CC0 (public domain), except `brg_endian.h`
- `src/kem/bike/x86_64`: Apache License v2.0
- `src/kem/kyber/pqclean_*`: public domain
- `src/kem/newhope/pqclean_*`: public domain
- `src/kem/ntru/pqclean_*`: public domain
- `src/kem/saber/pqclean_*`: public domain
- `src/sig/dilithium/pqclean_*`: public domain
- `src/sig/mqdss/pqclean_*`: CC0 (public domain)
- `src/sig/picnic/external/sha3`: CC0 (public domain)
## Acknowledgements
Various companies, including Amazon Web Services, evolutionQ, Microsoft Research, and Cisco Systems, have dedicated programmer time to contribute source code to OQS. [Various people](CONTRIBUTORS) have contributed source code to liboqs.
Financial support for the development of Open Quantum Safe has been provided by Amazon Web Services and the Tutte Institute for Mathematics and Computing.
Research projects which developed specific components of OQS have been supported by various research grants, including funding from the Natural Sciences and Engineering Research Council of Canada (NSERC); see the source papers for funding acknowledgments.