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Company: Southeast University
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Company: Southeast University
《统计学习方法》的代码实现
领英数据的聚类
matplotlib: plotting with Python
MD4 Collisions MD4 is a 128-bit cryptographic hash function, meaning it should take a work factor of roughly 2^64 to find collisions. It turns out we can do much better. The paper "Cryptanalysis of the Hash Functions MD4 and RIPEMD" by Wang et al details a cryptanalytic attack that lets us find collisions in 2^8 or less. Given a message block M, Wang outlines a strategy for finding a sister message block M', differing only in a few bits, that will collide with it. Just so long as a short set of conditions holds true for M. What sort of conditions? Simple bitwise equalities within the intermediate hash function state, e.g. a[1][6] = b[0][6]. This should be read as: "the sixth bit (zero-indexed) of a[1] (i.e. the first update to 'a') should equal the sixth bit of b[0] (i.e. the initial value of 'b')". It turns out that a lot of these conditions are trivial to enforce. To see why, take a look at the first (of three) rounds in the MD4 compression function. In this round, we iterate over each word in the message block sequentially and mix it into the state. So we can make sure all our first-round conditions hold by doing this: # calculate the new value for a[1] in the normal fashion a[1] = (a[0] + f(b[0], c[0], d[0]) + m[0]).lrot(3) # correct the erroneous bit a[1] ^= ((a[1][6] ^ b[0][6]) << 6) # use algebra to correct the first message block m[0] = a[1].rrot(3) - a[0] - f(b[0], c[0], d[0]) Simply ensuring all the first round conditions puts us well within the range to generate collisions, but we can do better by correcting some additional conditions in the second round. This is a bit trickier, as we need to take care not to stomp on any of the first-round conditions. Once you've adequately massaged M, you can simply generate M' by flipping a few bits and test for a collision. A collision is not guaranteed as we didn't ensure every condition. But hopefully we got enough that we can find a suitable (M, M') pair without too much effort. Implement Wang's attack.
Automating Outlier Detection via Meta-Learning (Code, API, and Contribution Instructions)
The official online compendium for Mining the Social Web, 2nd Edition (O'Reilly, 2013)
A date and clock collection
A Image Style Transfer using Python writen by four cool boys.
Neural Collaborative Filtering
A delightful community-driven (with 1,200+ contributors) framework for managing your zsh configuration. Includes 200+ optional plugins (rails, git, OSX, hub, capistrano, brew, ant, php, python, etc), over 140 themes to spice up your morning, and an auto-update tool so that makes it easy to keep up with the latest updates from the community.
SmartVPN为光宇游戏运维团队发布的一个帮助运维人员快速自动化安装OPENVPN服务的脚本,主要用于企业使用OpenVPN组网环境。
Latex code for making neural networks diagrams
Python-based Bitcoin and alt-coin utility library.
pycorrector is a toolkit for text error correction. 文本纠错,Kenlm,ConvSeq2Seq,BERT,MacBERT,ELECTRA,ERNIE,Transformer,T5等模型实现,开箱即用。
Code for "Heterogeneous Graph Transformer" (WWW'20), which is based on pytorch_geometric
A Python Toolbox for Scalable Outlier Detection (Anomaly Detection)
PyQt Examples(PyQt各种测试和例子) PyQt4 PyQt5
PyQt5中文教程
A Python package to manage extremely large amounts of data
All Algorithms implemented in Python
A Python 3 Bitcoin blockchain parser
Python3 library providing an easy interface to the Bitcoin data structures and protocol.
Python Fire is a library for automatically generating command line interfaces (CLIs) from absolutely any Python object.
PyTorch Tutorial for Deep Learning Researchers
Build your neural network easy and fast
Geometric Deep Learning Extension Library for PyTorch
pytorch implementation of structure2vec (https://arxiv.org/abs/1603.05629)
Native Qt AES encryption class
A declarative, efficient, and flexible JavaScript library for building user interfaces.
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TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
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We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google ❤️ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.