https://github.com/mohanson/cryptography-python

secp256k1 in pure Python
https://github.com/mohanson/cryptography-python

Last synced: about 2 months ago
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secp256k1 in pure Python

• Host: GitHub
• URL: https://github.com/mohanson/cryptography-python
• Owner: mohanson
• Created: 2022-10-09T09:49:41.000Z (about 2 years ago)
• Default Branch: master
• Last Pushed: 2024-04-09T09:24:21.000Z (9 months ago)
• Last Synced: 2024-04-09T10:35:36.815Z (9 months ago)
• Language: Python
• Size: 43 KB
• Stars: 14
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
## cryptography-python

This is a tutorial project about cryptography in python. Follow the steps and you will fully understand the magic of elliptic curves from scratch.

- Each file can be run independently!

- There are detailed paper references in the comments of the code

Based on this project, I implemented the SDKs of three famous blockchain projects: BTC, ETH and CKB.

- : Early stage of the project.

- : Almost fully supported.

- : Almost fully supported.

## secp256k1

paper: 

- `secp256k1.py`: implement finite field and secp256k1 curve.

- `secp256k1_generate_public_key.py`: calculate bitcoin public key from private key.

- `secp256k1_sign.py`: signature messages and verify it.

- `secp256k1_extract_private_key.py`: extract the private key by two signatures that use the same k.

- `secp256k1_jacobian`: jacobian projective space.

## polynomial arith

- `polynomial_numpy.py`: polynomial operation by numpy.

- `polynomial.py`: polynomial operation by hand writting python.

## bn128

- `bn128.py`: bn128 curve, implements [eip-196](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-196.md), [eip-197](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-197.md).

- `bn128_ethereum_api.py`: bn128 pairing testsuite.