Elliptic curve crypto in python including secp256k1 and alt_bn128
Project description
py_ecc
Elliptic curve crypto in python including secp256k1 and alt_bn128
Quickstart
pip install py_ecc
BLS Signatures
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
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
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 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:
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"
Release history Release notifications | RSS feed
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