Metadata-Version: 2.1
Name: py_ecc
Version: 1.7.0
Summary: Elliptic curve crypto in python including secp256k1 and alt_bn128
Home-page: https://github.com/ethereum/py_ecc
Author: Vitalik Buterin
Author-email: 
License: MIT
Description: py_ecc
        ==========================
        Elliptic curve crypto in python including secp256k1 and alt_bn128
        
        [![GitHub](https://img.shields.io/github/license/mashape/apistatus.svg)](https://github.com/ethereum/py_ecc) [![Build Status](https://circleci.com/gh/ethereum/py_ecc.svg?style=shield)](https://circleci.com/gh/ethereum/py_ecc) [![PyPI version](https://badge.fury.io/py/py-ecc.svg)](https://badge.fury.io/py/py-ecc)
        
        
        ## Quickstart
        ```sh
        pip install py_ecc
        ```
        
        ## BLS Signatures
        
        ```python
        from py_ecc import bls
        
        domain = 43
        
        private_key = 5566
        public_key = bls.privtopub(private_key)
        
        # Hash your message to 32 bytes
        message_hash = b'\xab' * 32
        
        # Signing
        signature = bls.sign(message_hash, private_key, domain)
        
        # Verifying
        assert bls.verify(message_hash, public_key, signature, domain)
        ```
        
        Think of a `domain` as a version. Signing and verifying would not work on different domains. Setting a new domain in an upgraded system prevents it from being affected by the old messages and signatures.
        
        ### Aggregating Signatures and Public Keys
        
        ```python
        private_keys = [3, 14, 159]
        public_keys = [bls.privtopub(key) for key in private_keys]
        signatures = [bls.sign(message_hash, key, domain) for key in private_keys]
        
        # Aggregating
        agg_sig = bls.aggregate_signatures(signatures)
        agg_pub = bls.aggregate_pubkeys(public_keys)
        
        # Verifying
        assert bls.verify(message_hash, agg_pub, agg_sig, domain)
        ```
        
        ### Multiple Aggregation
        
        ```python
        message_hash_1, message_hash_2 = b'\xaa' * 32, b'\xbb' * 32
        
        msg_hashes = [message_hash_1, message_hash_2]
        agg_pubs = [agg_pub_1, agg_pub_2]
        agg_agg_sig = bls.aggregate_signatures([agg_sig_1, agg_sig_2])
        
        assert bls.verify_multiple(agg_pubs, msg_hashes, agg_agg_sig, domain)
        ```
        
        ## Developer Setup
        
        If you would like to hack on py_ecc, please check out the [Ethereum Development Tactical Manual](https://github.com/ethereum/ethereum-dev-tactical-manual) for information on how we do:
        
        - Testing
        - Pull Requests
        - Code Style
        - Documentation
        
        ## Got bug?
        Feel free to create issue under https://github.com/ethereum/py_ecc/issues
        
        
        ## Copyright and Licensing
        Project is licensed under the MIT license.
        
        
        ## Release setup
        
        To release a new version:
        
        ```sh
        make release bump=$$VERSION_PART_TO_BUMP$$
        ```
        
        #### How to bumpversion
        
        The version format for this repo is `{major}.{minor}.{patch}` for stable, and
        `{major}.{minor}.{patch}-{stage}.{devnum}` for unstable (`stage` can be alpha or beta).
        
        To issue the next version in line, specify which part to bump,
        like `make release bump=minor` or `make release bump=devnum`.
        
        If you are in a beta version, `make release bump=stage` will switch to a stable.
        
        To issue an unstable version when the current version is stable, specify the
        new version explicitly, like `make release bump="--new-version 4.0.0-alpha.1 devnum"`
        
Platform: UNKNOWN
Classifier: Development Status :: 3 - Alpha
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Natural Language :: English
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: Implementation :: PyPy
Requires-Python: >=3.5, <4
Description-Content-Type: text/markdown
Provides-Extra: lint
Provides-Extra: test
Provides-Extra: dev
