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Simple hash-mining c library and its python binding.

License: MIT License

CMake 2.27% Makefile 1.44% C 73.47% Python 22.82%

md5 hash sha1 python-bindings

libproofofwork's Introduction

libProofOfWork

Simple hash-mining c library and its python binding.

Requirements

cmake and things to build
non-old CPU for AVX2 instructions
- Check flags sections of your /proc/cpuinfo.
OpenMP (optional)

How to Install

$ pip install proofofwork

How to Use

>>> import proofofwork
>>> import hashlib

>>> s = proofofwork.md5('00000000')
>>> s
b'erno8AAA'
>>> hashlib.md5(s).hexdigest()
'0000000057c4ca67d38e6826053824bd'

>>> s = proofofwork.sha1('000??????????????????????????????????000', text=b'sha1{????????}', alphabet=bytes(range(128, 256)))
>>> s
b'sha1{\xcb\xf0\xa4\x80\x80\x80\x80\xe0}'
>>> hashlib.sha1(s).hexdigest()
'00099d6917591c54f861032fd0d0071fbc647000'

Benchmark

MD5

In my laptop environment (Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz),

Code	Speed [hashes/sec]
libproofofwork	158000000
C openssl	5890000
python hashlib	794000

SHA1

In my laptop environment (Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz),

Code	Speed [hases/sec]
libproofofwork	83700000
C openssl	6360000
python hashlib	815000

License

MIT License

libproofofwork's People

Contributors

Stargazers

Watchers

Forkers

icchy abhatikar imulmul 7feilee

libproofofwork's Issues

SHA1

byte単位でなくてbit単位で指定できるようにする

Solve a puzzle: find an x such that 26 last bits of SHA1(x) are set, len(x)==29 and x[:24]=='84b576cb1efc50236d74bed3' みたいなので4倍ぐらい遅いのちょっと悲しいので

Confusing specification: the length of alphabet is truncated

At the innermost loop, the length of alphabet is truncated for the SIMD vector width.
This is not good when you want to do bruteforce search.

interface with bitmask for python bindings

SHA2

Installation failure with macOS, Homebrew OpenSSL

proofofwork fails to install out-of-the-box on macOS due to missing OpenSSL libraries.

OpenSSL is installed on my system with brew install openssl.

In order for the build to succeed, the command must be invoked a la:

$ CFLAGS='-I/usr/local/opt/openssl/include' pip install --user proofofwork

It may be useful to check for this missing flag on macOS, and set the appropriate environment variable if that directory exists.

AVX-512 or SSE

Intel SHA extensions

I'll write implementation with it when I get CPUs supporting it.

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