md5

How to get the MD5 hash of a file in C++? [closed]

Here’s a straight forward implementation of the md5sum command that computes and displays the MD5 of the file specified on the command-line. It needs to be linked against the OpenSSL library (gcc md5.c -o md5 -lssl) to work. It’s pure C, but you should be able to adapt it to your C++ application easily enough. … Read more

fastest MD5 Implementation in JavaScript

I’ve heard Joseph’s Myers implementation is quite fast. Additionally, he has a lengthy article on Javascript optimization describing what he learned while writing his implementation. It’s a good read for anyone interested in performant javascript. http://www.webreference.com/programming/javascript/jkm3/ His MD5 implementation can be found here

Generating an MD5 checksum of a file

You can use hashlib.md5() Note that sometimes you won’t be able to fit the whole file in memory. In that case, you’ll have to read chunks of 4096 bytes sequentially and feed them to the md5 method: import hashlib def md5(fname): hash_md5 = hashlib.md5() with open(fname, “rb”) as f: for chunk in iter(lambda: f.read(4096), b””): … Read more

Get MD5 hash of big files in Python

You need to read the file in chunks of suitable size: def md5_for_file(f, block_size=2**20): md5 = hashlib.md5() while True: data = f.read(block_size) if not data: break md5.update(data) return md5.digest() NOTE: Make sure you open your file with the ‘rb’ to the open – otherwise you will get the wrong result. So to do the whole … Read more