GnuPG (the GNU Privacy Guard or GPG) is GNU's tool for secure communication and data storage. It can be used to encrypt data and to create digital signatures. It includes an advanced key management facility and is compliant with the proposed OpenPGP Internet standard as described in RFC2440. As such, it is meant to be compatible with PGP from NAI, Inc. Because it does not use any patented algorithms, it can be used without any restrictions.
The Mandos system allows computers to have encrypted root file systems and at the same time be capable of remote or unattended reboots. The computers run a small client program in the initial RAM disk environment which will communicate with a server over a network. All network communication is encrypted using TLS. The clients are identified by the server using an OpenPGP key that is unique to each client. The server sends the clients an encrypted password. The encrypted password is decrypted by
Notebook PEA protects texts using authenticated encryption (EAX mode) for confidentiality, integrity, and authenticity of the text, using the new key derivation function Catena-Dragonfly. Notebook PEA works like a self-decrypting archive (SDA): the plaintext is never stored on disk, instead it is displayed in a simple text editor with some styling functionality, redo/undo and copy, cut, paste commands.
LibreSSL Portable is a free version of the SSL/TLS protocol forked from OpenSSL, and developed by the OpenBSD project. LibreSSL is developed as part of the OpenBSD system, with lots of ancient cruft and security woes already fixed. The portable version for other Unices is developed alongside.
Secrets can be used to split a secret text into shares to be distributed to friends. When all friends agree, the shares can be combined to retrieve the original secret text, for instance to give consensual access to a lost pin, a password, a list of passwords, a private document or a key to an encrypted volume. Secret sharing can be useful in many different situations and this tool is a simple and well documented free and open source implementation available for anyone to use from this website,
Image Lock PEA protects photos, drawings, and documents in image format with a password. Thanks to the integrated viewer the images are never stored unencrypted on the hard disk, but are held only in memory. The Image Lock PEA uses functions to derive the key from the password, that protect also against attackers with a high budget. In addition to the confidentiality, an authenticated encryption protects the integrity and authenticity of the images.
Naamari is AES&SHA-based crypto-synchronizer for cloud/remote file storage, with cryptographic and transport modules being separate applications. It works with 4 locations. 1st: local dir with original files. 2nd: dir containing folder structure and names of files placed into storage (but not content). 3rd & 4th - storages: local (another local dir) and remote (say, a cloud). In storages, there are no folders, files have pseudo-random names and encrypted content ("flattening"). The main module
Tomb is a system to make strong encryption easy for everyday use. A tomb is like a locked folder that can be safely transported and hidden in a filesystem. Its keys can be kept separate; for example, you can keep the tomb on your computer and its key on a USB stick. Tomb is written in code that is easy to review and links shared components: it consists of a ZShell script and desktop integration apps; it uses standard GNU tools and the crypto API of the Linux kernel (dm-crypt) via cryptsetup.
OpenSSH is a BSD/Linux implementation of SSH1 and SSH2 for encrypted terminal connections, tunneling and file transfers. It includes the sshd server, scp and sftp, and various utility tools such as ssh-add, ssh-agent, ssh-keysign, ssh-keyscan, ssh-keygen, and the sftp-server.
gpgpwd is a terminal-based password manager. It stores a list of passwords and their associated usernames in a GnuPG-encrypted file, and allows you to easily retrieve, change, and add to that file as needed. It also generates random passwords which you can use, easily allowing you to have one "master password" (for your gpg key), with one unique and random password for each website or service you use, ensuring that your other accounts stay safe even if one password gets leaked. gpgpwd can als
This script makes it easy to create an initial environment setup for secure GitHub exchanges.
Briefly, t1ha is a 64-bit Hash Function: 1. Created for 64-bit little-endian platforms, in predominantly for x86_64, but without penalties could runs on any 64-bit CPU. 2. In most cases up to 15% faster than City64, xxHash, mum-hash, metro-hash and all others which are not use specific hardware tricks. 3. Not suitable for cryptography.
MikroLock reads and writes encrypted miniLock files. It is a fast native implementation of the open minilock file format. Despite its name (and in contrast to the original implementation), it can also handle big files. Information about the cryptographic details: https://minilock.io.
C implementation of NTRUEncrypt An implementation of the public-key encryption scheme NTRUEncrypt in C. NTRUEncrypt's main strengths are high performance and resistance to quantum computer attacks. Its main drawback is that it is patent encumbered. The patents expire in 2020; when built with the NTRU_AVOID_HAMMING_WT_PATENT flag, libntru becomes patent-free in 2017. For more information on the NTRUEncrypt algorithm, see the NTRU introduction page at http://tbuktu.github.com/ntru/
Dowse is a transparent proxy facilitating the awareness of ingoing and outgoing connections, from, to, and within a local area network. Dowse provides a central point of soft control for all local traffic: from ARP traffic (layer 2) to TCP/IP (layers 3 and 4) as well as application space, by chaining a firewall setup to a trasparent proxy setup. A core feature for Dowse is that of hiding all the complexity of such a setup.
Jaro Mail is an integrated suite of interoperable tools for GNU/Linux and Apple/OSX to manage e-mail communication in a private and efficient way, without relying too much on on-line services, in fact encouraging users to store e-mail locally. Rather than reinventing the wheel, Jaro Mail reuses some existing free and open source tools working since more than 10 years, generating their configurations and setting up integrations automatically.
This is a scoring server built using Ruby on Rails by the Military Cyber Professionals Association (MCPA). It is free to use and extend under the MIT license. The goal of this project is to provide a standard generic scoring server that provides an easy way to add and modify problems and track statistics of a Cyber Capture the Flag event.
CACKey provides a standard interface (PKCS#11) for smartcards connected to a PC/SC compliant reader. It performs a similar function to "CoolKey", but only supports Government Smartcards. It supports all Government Smartcards that implement the Government Smartcard Interoperability Specification (GSC-IS) v2.1 or newer.
mlock reads and writes encrypted miniLock files. It is a fast native implementation of the minilock file format. Despite its name (and in contrast to the original implementation), it can also handle big files. Information about the cryptographic details: https://minilock.io.
sencrypt and sdecrypt are utilities for encrypting and decrypting data with the AES, DES, 3DES, and RC4 algorithms. It can read keys from files or ask for a passphrase and use that together with a salt to derive a key using the PBKDF2 key derivation function. sencrypt and sdecrypt are portable and compatible reimplementations of the encrypt and decrypt utilities in Solaris/Illumos-based operating systems.
JSch is a pure Java implementation of SSH2. It allows you to connect to an sshd server and use port forwarding, X11 forwarding, file transfer, etc. You can integrate its functionality into your own Java programs.
The OpenSSL Project is a collaborative effort to develop a robust, commercial-grade, fully featured, and Open Source toolkit implementing the Secure Sockets Layer (SSLv2/v3) and Transport Layer Security (TLSv1) as well as a full-strength general-purpose cryptography library.
gcaff is a graphical OpenPGP/GPG key signing tool. It simplifies signing multiple keys, as it was intended for keysigning parties. It displays photo IDs for easier identification, and allows multi-key signing in one go. Certification levels can be adapted on a per-key basis, and it includes automatic emailing the final signed keys.
Trusted QSL keeps eQSL an open and free activity for amateur radio operators. It promotes the Digital Signature Standard (DSS).
ZShaolin unleashes the power of GNU/Linux on your Android phone or tablet by installing a small and powerful shell environment. It comes with applications to edit images, audio and video using batch scripts one can write and upload. It does not require rooting, not even an Internet connection to work.
Checksum Control is a wizard to generate and verify checksum files. It supports SFV and MD5, even some exotic MD5 meta file types.
A pure C library for asymmetric cryptography algorithm.Include Modified-Rabin signature scheme,Rabin encryption scheme,H. C. Williams encryption scheme.
EncFSMP allows to mount and edit/create an EncFS (encrypted file system) on Windows or Max OS X systems. It's compatible to Linux encfs 1.7.4, but includes the proprietary Pismo File Mount kernel driver for Windows.
Web-based password manager that does not store any passwords.
miniLock was subjected to a cryptographic code audit carried out by Cure53 and with the support of the Open Technology Fund.
Password Safe is a password database utility. It stores multiple identities and accounts encrypted using Bruce Schneiers Twofish behind a master key. It provides an intuitive user interface, automatic backups, and is available on many plattforms.
PolarSSL is a light-weight cryptographic and SSL/TLS library written in C. PolarSSL makes it easy for developers to include cryptographic and SSL/TLS capabilities in their (embedded) applications with as little hassle as possible. Loose coupling of the components inside the library means that it is easy to separate the parts that are needed, without needing to include the total library. PolarSSL is written with embedded systems in mind and has been ported on a number of architectures, including