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Ophcrack is a Windows password cracker based on a time-memory trade-off using rainbow tables. This is a new variant of Hellman's original trade-off, with better performance. It recovers 99.9% of alphanumeric passwords in seconds. Features: - Runs on Windows, GNU/Linux, FreeBSD, Mac OS X, etc. - Cracks LM and NTLM hashes - Free tables available for alphanumeric LM hashes - Brute-force module for simple passwords - Audit mode and CSV export - Real-time graphs to analyze passwords (optional) - Loads hashes from local and remote SAM - Loads hashes from encrypted SAM recovered from a Windows partition, Vista included - Supports soon to be released XP flash and Vista eight XL tables

Seahorse is a Gnome front end for GnuPG - the Gnu Privacy Guard program. It is a tool for secure communications and data storage. Data encryption and digital signature creation can easily be performed through a GUI and Key Management operations can easily be carried out through an intuitive interface.

Libecc is an elliptic curve crypto library for C++ developers.

Knocker is a simple and easy to use TCP (no UDP yet) security port scanner which is able to analyze hosts and all of the different services started on them. (Console version)

Libkpass is a from-scratch C implementation of reading and writing KeePass 1.x format password databases.

libsparkcrypto is a formally verified implementation of several widely used symmetric cryptographic algorithms using the SPARK programming language and toolset. For the complete library proofs of the absence of run-time errors like type range violations, division by zero and numerical overflows are available. Some of its subprograms include proofs of partial correctness. The distribution contains test cases for all implemented algorithms and a benchmark to compare its performance with the OpenSSL library. The achieved speed has been found to be very close to the optimized C and Assembler implementations of OpenSSL.

LibTomCrypt is a portable ANSI C cryptographic library that supports symmetric ciphers, one-way hashes, pseudo-random number generators, public key cryptography (via RSA,DH or ECC/DH) and a plethora of support routines.

libmcrypt is a cryptographic library that conveniently brings together a variety of ciphers for convenient use. In particular, having libmcrypt allows you to build PHP with encryption.

log2timeline is a computer forensic tool to parse various log files and artifacts found on suspect systems and produce a timeline that can be analyzed by computer forensic examiners.

This program is intended to replace crypt(1), It supports all the algorithms and modes in libmcrypt (BLOWFISH, TWOFISH, DES, TripleDES, 3-WAY, SAFER, LOKI97, GOST, RC2, RC6, MARS, IDEA, RIJNDAEL, SERPENT, CAST, ARCFOUR and WAKE), and is compatibile with UNIX crypt(1) and with des(1) from Solaris.