Projects

git-annex

git-annex allows managing files with git, without checking the file contents into git. While that may seem paradoxical, it is useful when dealing with files larger than git can currently easily handle, whether due to limitations in memory, checksumming time, or disk space.

md5recovery

This is a simple program written in Java that tries to find a hash by using a dictionary file. It can be as good as the dictionary used in it. The dictionary file is not included. If you have better ideias for this code, just let me now :) DISCLAIMER: This tool is for educational purposes only. ... [More] It shows how bad it is to have weak passwords such as known words like "master" or alike. [Less]

phpSec

A PHP security library. * Session handler * XSS filter * CSRF protection * Password hashing * Encrypting data * Random data generator * Yubikey - one time tokens * One time passwords

Ash C++ Template Library (AshTL)

AshTL aims to provide a complete framework for dealing with spatial data in an efficient, parallel manner. As such, we primarily provide container classes and data types relating to 2D and 3D coordinate grids. AshTL is currently in alpha development (some features may not work correctly, and ... [More] interfaces are likely to change). While in alpha and beta development, AshTL is licensed under AGPL v3+. Stable releases will include an exception so that AshTL itself will always be AGPL, but will not force code that uses it to be. [Less]

google-sparsehash

An extremely memory-efficient hash_map implementation. 2 bits/entry overhead! The SparseHash library contains several hash-map implementations, including implementations that optimize for space or speed. These hashtable implementations are similar in API to SGI's hash_map class and the tr1 ... [More] unordered_map class, but with different performance characteristics. It's easy to replace hash_map or unordered_map by sparse_hash_map or dense_hash_map in C++ code. Recent news: 11 January 2010I've just released sparsehash 1.6. The API has widened a bit with the addition of =deleted_key()= and =empty_key()=, which let you query what values these keys have. A few rather obscure bugs have been fixed (such as an error when copying one hashtable into another when the empty_keys differ). A full list of changes is described in the ChangeLog. 9 May 2009I've just released sparsehash 1.5.1. Hot on the heels of sparsehash 1.5, this release fixes a longstanding bug in the sparsehash code, where equal_range would always return an empty range. It now works as documented. All sparsehash users are encouraged to upgrade. 7 May 2009I've just released sparsehash 1.5. This release introduces tr1 compatibility: I've added rehash, begin(i), and other methods that are expected to be part of the unordered_map API once tr1 in introduced. This allows sparse_hash_map, dense_hash_map, sparse_hash_set, and dense_hash_set to be (almost) drop-in replacements for unordered_map and unordered_set. There is no need to upgrade unless you need this functionality, or need one of the other, more minor, changes described in the ChangeLog. [Less]

shatag

A tool for Linux systems, to store cryptographic hashes of files in posix extended attributes, and compare them against remote databases, to check for duplicate files across several machines.

pHash

pHash is an open source software library released under the GPLv3 license that implements several perceptual hashing algorithms, and provides a C-like API to use those functions in your own programs. pHash itself is written in C++. Potential applications include copyright protection, similarity ... [More] search for media files, or even digital forensics. For example, YouTube could maintain a database of hashes that have been submitted by the major movie producers of movies to which they hold the copyright. If a user then uploads the same video to YouTube, the hash will be almost identical, and it can be flagged as a possible copyright violation. The audio hash could be used to automatically tag MP3 files with proper ID3 information, while the text hash could be used for plagiarism detection. [Less]

libhashish

Libhashish is a powerful and generic hash library for C and C++. The library attempt to combine the best algorithms in this area and take all kinds of optimizations into account. Furthermore the main focus is applicability - at least you should use this library.

TigerHash

TigerHash C implementation for Haskell

Openwall - phpass

phpass is a portable password hashing framework for use in PHP applications. The preferred (most secure) hashing method supported by phpass is the OpenBSD-style bcrypt (known in PHP as CRYPT_BLOWFISH), with a fallback to BSDI-style extended DES-based hashes (known in PHP as CRYPT_EXT_DES), and a ... [More] last resort fallback to an MD5-based variable iteration count password hashing method implemented in phpass itself. [Less]