pycoin | python implementation of bitcoin | Cryptocurrency library

by kokjo Python Version: Current License: Non-SPDX

X-Ray Key Features Code Snippets(2)Community Discussions(1)Vulnerabilities Install Support

kandi X-RAY | pycoin Summary

pycoin is a Python library typically used in Blockchain, Cryptocurrency, Bitcoin applications. pycoin has no bugs, it has no vulnerabilities and it has low support. However pycoin build file is not available and it has a Non-SPDX License. You can download it from GitHub.

python implementation of bitcoin

Support

Quality

Security

License

Reuse

Support

pycoin has a low active ecosystem.

It has 6 star(s) with 6 fork(s). There are 2 watchers for this library.

It had no major release in the last 6 months.

There are 0 open issues and 2 have been closed. On average issues are closed in 620 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of pycoin is current.

Quality

pycoin has 0 bugs and 0 code smells.

Security

pycoin has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

pycoin code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

pycoin has a Non-SPDX License.

Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

Reuse

pycoin releases are not available. You will need to build from source code and install.

pycoin has no build file. You will be need to create the build yourself to build the component from source.

It has 4734 lines of code, 545 functions and 49 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed pycoin and discovered the below as its top functions. This is intended to give you an instant insight into pycoin implemented functionality, and help decide if they suit your requirements.

Create a Key instance from a string
Find the curve with the given oid
Read length from string
Remove a constructed tag from a string
Create a variable list
Takes a binary string and returns it
Convert an integer into a binary value
Construct a KeyDescriptor from a string
Remove a bitstring from a string
Get or create a transaction object
Return a string representation of the curve
Put the transaction
Send a random message
Confirms all txs
Verify the transaction
Call a handler
Decode a list of strings to a corresponding value
Yield all related transactions
Decorator for struct format
Create a curve from a string
Generate a Key from a secret
Decode a DER signature
Open a database
Decorator that converts an object into a JSON object
Decorator for functions that require a transaction
Iterate over keys

Get all kandi verified functions for this library.

pycoin Key Features

No Key Features are available at this moment for pycoin.

pycoin Examples and Code Snippets

ECDSA Sign / Verify using the secp256k1 Curve and SHA3-256

Python

Lines of Code : 46

License : No License

Copy

from pycoin.ecdsa import generator_secp256k1, sign, verify
import hashlib, secrets

def sha3_256Hash(msg):
    hashBytes = hashlib.sha3_256(msg.encode("utf8")).digest()
    return int.from_bytes(hashBytes, byteorder="big")

def signECDSAsecp256k1(msg

ECDSA: Sign / Verify - Examples

Python

Lines of Code : 1

License : No License

Copy

pip install pycoin

Community Discussions

Trending Discussions on pycoin

Bouncy Castle C#: How do I define a curve and points in order to test/play with EC point arithmetic?

QUESTION

Bouncy Castle C#: How do I define a curve and points in order to test/play with EC point arithmetic?

Asked 2020-Aug-14 at 03:27

I had a simple EC library for C#, but it is gone and I can't find it on the web. It was previously published on MSDN, but the link is now dead.

I am trying to use the Bouncy Castle Library to accomplish similar tasks. I want to Create a curve (secp256k1), and I want to be able to do point arithmetic and view the raw point data.

i.e.:

G + 3 * G = 4 * G

p + q

4 * G - G = 3 * G

etc.

What namespaces do I need to include, how do I define / declare the curve, and how do I define my points? I have successfully (I believe...) included the Bouncy Castle .dll in my C# project.

I am NOT interested in creating keys or anything of that sort. Just EC point arithmetic. A different (simple) library that would allow me to do the these same operations would be just as good or better.

Thanks for the help.

EDIT: I have continued to work on this, and my code looks like this:

...

ANSWER

Answered 2020-Aug-14 at 03:27

Short answer: Use ECPoint.Normalize to return an ECPoint whose (X, Y) coordinates can be compared to PyCoin.

Details: By default (BouncyCastle's) ECPoint operations are performed in projective coordinates; specifically what are usually called "Jacobian modified coordinates". This is for performance when performing a series of operations, especially a scalar multiplication. If you print out the value of e.g. twoG using the provided ECPoint.ToString method, you will see the extra coordinates present.

When you want to compare an ECPoint to some (X, Y) value, you can call ECPoint.Normalize, which returns a new ECPoint where the Z coordinate is 1 and the X and Y coordinates are the affine values. It is a relatively expensive operation that is usually avoided until the final step of a larger calculation.

Source https://stackoverflow.com/questions/63400700

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install pycoin

You can download it from GitHub.
You can use pycoin like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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