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KeePass is a free open source password manager, which helps you to manage your passwords in a secure way. You can put all your passwords in one database, which is locked with one master key or a key file. So you only have to remember one single master password or select the key file to unlock the whole database. The databases are encrypted using the best and most secure encryption algorithms currently known (AES and Twofish). This is the official KeePass application, which was originally only available for Windows, but has now been re-written with .Net and able to be run on BSD, Linux and Mac OS X with Mono.

A repository of cryptographic primitives. * Symmetric ciphers: AES, DES, 3DES, Blowfish, Camellia, RC4, Salsa, ChaCha. * Hash: SHA1, SHA2, SHA3, MD2, MD4, MD5, Kekkak, Skein, Ripemd, Tiger, Whirlpool * MAC: HMAC, Poly1305 * Assymmetric crypto: DSA, RSA, DH, ECDH, ECDSA, ECC, Curve25519, Ed25519 * Key Derivation Function: PBKDF2, Scrypt * Cryptographic Random generation: System Entropy, Deterministic Random Generator * Data related: Anti-Forensic Information Splitter (AFIS) If anything cryptographic related is missing from here, submit a pull request to have it added. This package strive to be a cryptographic kitchen sink that provides cryptography for everyone. Evaluate the security related to your requirements before using.

Origami is NOT a PDF rendering library. It aims at providing a scripting tool to generate and analyze malicious PDF files. As well, it can be used to create on-the-fly customized PDFs, or to inject (evil) code into already existing documents. - Create PDF documents from scratch. - Parse existing documents, modify them and recompile them. - Explore documents at the object level, going deep into the document structure, uncompressing PDF object streams and desobfuscating names and strings. - High-level operations, such as encryption/decryption, signature, file attachments... - A GTK interface to quickly browse into the document contents.

Nessus is a security scanner. That is, it's a program which will scan a given network and will seek for vulnerabilities which could be exploited by some remote intruder. The Nessus Project was originally started by Renaud Deraison (deraison@worldnet.fr). Many people contributed in many ways to the project, and the Nessus core team is now made up of Alexis de Bernis (alexisb@mygale.org), who is the Java specialist, Noam Rathaus (dolittle@isrealmail.com) who is in charge of the Nessus client for Windows, and Renaud Deraison who is still here and who is the project leader.

OpenBSM is an open source implementation of Sun's Basic Security Module (BSM) Audit API and file format. BSM, the de facto industry standard for Audit, describes a set of system call and library interfaces for managing audit records, as well as a token stream file format that permits extensible and generalized audit trail processing. OpenBSM extends the BSM API and file format in a number of ways to support features present in the Mac OS X and FreeBSD operating systems, such as Mach task interfaces, sendfile(), and Linux system calls present in the FreeBSD Linux emulation layer.

Pairing-based cryptography is a relatively young area of cryptography that revolves around a certain function with special properties. The PBC (Pairing-Based Cryptography) library is a free C library (released under the GNU Public License) built on the GMP library that performs the mathematical operations underlying pairing-based cryptosystems. The PBC library is designed to be the backbone of implementations of pairing-based cryptosystems, thus speed and portability are important goals. It provides routines such as elliptic curve generation, elliptic curve arithmetic and pairing computation. Thanks to the GMP library, despite being written in C, pairings times are reasonable.

OpenBSM is an open source implementation of Sun's Basic Security Module (BSM) Audit API and file format. BSM, the de facto industry standard for Audit, describes a set of system call and library interfaces for managing audit records, as well as a token stream file format that permits extensible and generalized audit trail processing. OpenBSM extends the BSM API and file format in a number of ways to support features present in the Mac OS X and FreeBSD operating systems, such as Mach task interfaces, sendfile(), and Linux system calls present in the FreeBSD Linux emulation layer.

OpenVPN is a robust, scalable and highly configurable VPN (Virtual Private Network) daemon which can be used to securely link two or more private networks using an encrypted tunnel over the internet. It can operate over UDP or TCP, can use SSL or a pre-shared secret to authenticate peers, and in SSL mode, one server can handle many clients. This development port is updated frequently and is likely NOT STABLE. This is an untested tar of the source tree. We attempt to omit inoperable states, but there is a good chance this program will not run. DO NOT USE IN PRODUCTION WITHOUT CAUTION

Osiris is a Host Integrity Management System that periodically monitors one or more hosts for change. It maintains detailed logs of changes to the file system, user and group lists, resident kernel modules, and more. Osiris can be configured to email these logs to the administrator. Hosts are periodically scanned and, if desired, the records can be maintained for forensic purposes. Osiris keeps an administrator apprised of possible attacks and/or nasty little trojans. The purpose here is to isolate changes that indicate a break-in or a compromised system. Osiris makes use of OpenSSL for encryption and authentication in all components.

This is the base class for a system of objects that encapsulate passphrases. An object of this type is a passphrase recogniser: its job is to recognise whether an offered passphrase is the right one. For security, such passphrase recognisers usually do not themselves know the passphrase they are looking for; they can merely recognise it when they see it. There are many schemes in use to achieve this effect, and the intent of this class is to provide a consistent interface to them all, hiding the details. The CPAN package Authen::Passphrase contains implementations of several specific passphrase schemes in addition to the base class.