pysha2 | , SHA224 , SHA256 | Cryptography library

by thomdixon Python Version: Current License: MIT

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

kandi X-RAY | pysha2 Summary

pysha2 is a Python library typically used in Financial Services, Fintech, Security, Cryptography applications. pysha2 has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. However pysha2 build file is not available. You can download it from GitHub.

Pure Python implementation of SHA2 (i.e., SHA224, SHA256, SHA384, and SHA512).

Support

Quality

Security

License

Reuse

Support

pysha2 has a low active ecosystem.

It has 45 star(s) with 21 fork(s). There are 5 watchers for this library.

It had no major release in the last 6 months.

There are 0 open issues and 3 have been closed. On average issues are closed in 1 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of pysha2 is current.

Quality

pysha2 has 0 bugs and 1 code smells.

Security

pysha2 has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

pysha2 code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

pysha2 is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

pysha2 releases are not available. You will need to build from source code and install.

pysha2 has no build file. You will be need to create the build yourself to build the component from source.

pysha2 saves you 111 person hours of effort in developing the same functionality from scratch.

It has 282 lines of code, 38 functions and 6 files.

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

Top functions reviewed by kandi - BETA

kandi has reviewed pysha2 and discovered the below as its top functions. This is intended to give you an instant insight into pysha2 implemented functionality, and help decide if they suit your requirements.

Process a SHA256 hash .
Process a SHA512 hash chunk .
Add a hash to the buffer .
Compute the digest of the digest .
Initialize the Counter .
Return a new sha512 hash .
Returns a shallow copy of the object .
Generate a hex digest .
Roll 16bit unsigned integers .

Get all kandi verified functions for this library.

pysha2 Key Features

No Key Features are available at this moment for pysha2.

pysha2 Examples and Code Snippets

No Code Snippets are available at this moment for pysha2.

Community Discussions

Trending Discussions on pysha2

Why doesn't my hash function output a dynamic value?

QUESTION

Why doesn't my hash function output a dynamic value?

Asked 2020-Apr-05 at 14:32

I'm a newbie in this field and am trying to learn a bit about how to write cryptographic hash functions.

To get some hands-on, I tried updating the PySHA2 algorithm for Python 3.6 and up (the original version doesn't work on Python 2.5+ and the author says he won't fix this). I don't intend to use this algorithm for any work, just coding this for the sake of knowledge.

I've reached this far:

...

ANSWER

Answered 2020-Apr-05 at 14:32

You'll always have to pad the message. Padding and adding the length are always required as last step of the SHA-2 process. Currently you weren't performing that last step (to completion).

Here are my last two comments that pointed you in the right direction:

So generally you try and take one 128 byte block from the binary message, update the hash state using the information in that block, then move to the next one until you have a partial or 0 byte block. That block you need to pad & add size indication (in bits) and process. If you've not enough space for the padding / size indication then you need yet another block consisting entirely of padding and the size indication. If you read carefully, then you always process at least one block.

and

Hmm, it is already in sha_backend_digest (the 0x80 followed by zero bytes and the length which is input size * 8 (_counter << 3).

But of course you do need to perform that and not skip any step.

Source https://stackoverflow.com/questions/61041810

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

Vulnerabilities

No vulnerabilities reported

Install pysha2

You can download it from GitHub.
You can use pysha2 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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