Python SHA-1

An implementation of the SHA-1 hashing algorithm in pure python.

This library was designed to demonstrate a straight-forward implementation of the algortihm, and is not designed for speed. The current implementation matches the hashlib api. If you want to see the entire algorithm run in a single function, see this commit.

Usage

The library may be called from the command line. Message input may be piped in stdin:

$ echo hello | python sha1.py
sha1-digest: f572d396fae9206628714fb2ce00f72e94f2258f

One or more files may also be specified as arguments to the script:

 $ python sha1.py myfile myfile2
 sha1-digest: 3f786850e387550fdab836ed7e6dc881de23001b
 sha1-digest: 57a9901af6fe030198ef1737783e2048ee96da4a