Browse free open source C Cryptography Software and projects below. Use the toggles on the left to filter open source C Cryptography Software by OS, license, language, programming language, and project status.

  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
    Try free now
  • Grafana: The open and composable observability platform Icon
    Grafana: The open and composable observability platform

    Faster answers, predictable costs, and no lock-in built by the team helping to make observability accessible to anyone.

    Grafana is the open source analytics & monitoring solution for every database.
    Learn More
  • 1
    RetroShare

    RetroShare

    [WARNING] Project has moved to http://github.com/Retroshare/Retroshare

    [IMPORTANT] Retroshare is now distributed on Github. Please go to http://retroshare.net to find the latest releases and sources. RetroShare is a cross-platform, secured and decentralized communication system. It lets you to securely chat, share photos, videos, and more with family and friends, using OpenPGP to authenticate peers and OpenSSL to encrypt all communication.
    Downloads: 12 This Week
    Last Update:
    See Project
  • 2
    PuTTY SSH client for Symbian OS
    Downloads: 6 This Week
    Last Update:
    See Project
  • 3
    Mixmaster is an anonymous remailer. Remailers provide protection against traffic analysis and allow sending electronic mail anonymously or pseudonymously. Mixmaster consists of both client and server installations.
    Downloads: 23 This Week
    Last Update:
    See Project
  • 4
    SSHDOS is a DOS port of SSH, SCP, SFTP and Telnet clients. Needs a packet driver (or a PPP driver for dialup connection) only. There are two separate packages for SSH1 and for SSH2.
    Downloads: 11 This Week
    Last Update:
    See Project
  • Deliver trusted data with dbt Icon
    Deliver trusted data with dbt

    dbt Labs empowers data teams to build reliable, governed data pipelines—accelerating analytics and AI initiatives with speed and confidence.

    Data teams use dbt to codify business logic and make it accessible to the entire organization—for use in reporting, ML modeling, and operational workflows.
    Learn More
  • 5
    psyBNC is an easy-to-use, multi-user, permanent IRC-Bouncer with many features. Some of its features include symmetric ciphering of talk and connections (Blowfish and IDEA) It compiles on Linux, FreeBSD, SunOs and Solaris.
    Downloads: 8 This Week
    Last Update:
    See Project
  • 6
    This project is a C++ library which allows incorporating DKIM into an existing MTA or other application. It provides full support for signing, verifying, and SSP. It is compliant with RFC 4871.
    Leader badge
    Downloads: 3 This Week
    Last Update:
    See Project
  • 7
    Steganography program. Crypture encrypts (1024 bit key) and stores files in Windows bitmap files. Only 6 KB, with no install required. Fills all bits with noise, to slip by standard steganalysis methods. Data header is encrypted and scattered as well.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 8
    This project aims at full implementation of RFC4306 and associated RFCs. It is implemented as daemon process, as is custom for this type of software for Unix-like operating systems. Main target for daemon is Linux environment, specifically Fedora Core 5.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 9
    ICMP-Chat is a simple chat for the console that uses blowfish encrypted packets for communication.
    Downloads: 1 This Week
    Last Update:
    See Project
  • Pest Control Management Software Icon
    Pest Control Management Software

    Pocomos is a cloud-based field service solution that caters to businesses

    Built for the pest control industry, but also works great for Mosquito Control, Bin Cleaning, Window Washing, Solar Panel Cleaning, and other Home Service Businesses in need of an easy-to-use software that helps you simplify routing, scheduling, communications, payment processing, truck tracking, time tracking, and reporting.
    Learn More
  • 10
    Pidgin-paranoia is a plug-in for Pidgin (formerly known as Gaim) that provides information-theoretically secure encrypted conversations using one-time-pads.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 11

    Rockhopper VPN software

    IPsec / IKEv2-based VPN software for Linux.

    Rockhopper is IPsec/IKEv2-based VPN software for Linux. This software is interoperable with Windows 7, Windows 8 and Windows 10 VPN clients and it provides a handy AJAX-based Web console to manage Secure Virtual Ethernet(LAN), Routing-based VPN, Remote Access VPN and servers protected by IPsec. No kernel modules are needed. The ESP protocol stack is also implemented in user space.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 12
    dk-milter consists of two parts: A milter-based application (dk-filter) which plugs in to Sendmail to provide DomainKeys service, and a library (libdk) which can be used to build DomainKeys-compliant applications or MTAs. See the home page for details.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 13
    This ain't your daddy's crypto! We provide a set of C libs and utilities to perform cypherpunk style crypto functions, using your existing OpenPGP keys. Ring signatures; credentials; mental poker; timelines; zero knowledge proofs. Cool stuff!
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    AUM CSPRNG & Stream Cipher

    AUM CSPRNG & Stream Cipher

    A minimal CSPRNG reflecting the Zen of cipher design

    AUM is an extremely fast, small-state, cryptographically secure pseudo-random number generator and stream cipher. AUM exhibits uniform distribution, mixes rapidly, has no detected bias, and comes in three variants: AUM16, with an internal state array of 16+4 32-bit words; AUM32, with an internal state of 32+4 words; and AUM64 with a 64+4-word state. The former permit seeding with a key of up to 512 or 1024 bits, the latter with a 2048-bit key.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    Ano (Anonymous Network Overlay) is a decentralized IP router based on relaying principle. In Ano all IP traffic is anonymized, including TCP, UDP, ICMP and DNS protocols. Each node acts as a relay and NAT for external traffic.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    BEDBUG CSPRNG & Stream Cipher

    BEDBUG CSPRNG & Stream Cipher

    A family of FLEA-inspired CSPRNGs and Stream Ciphers

    BEDBUG is a small, fast, cryptographically secure pseudo-random number generator (CSPRNG) and stream cipher. It exhibits uniform distribution, mixes rapidly (with worst-case avalanche better than 16-bits), has no detected bias, and comes in three variants: BEDBUG128, with an internal state array of 128+3 32-bit words; BEDBUG256, with an internal state of 256+3 words; and BEDBUG512 with a 512+3-word state. The former permit seeding with a key of up to 4096 or 8192 bits, the latter with a 16384-bit key. The BEDBUG generator itself is a mere 5 lines of code: Three rotations; two pseudo-random lookups. The default BEDBUG configuration alternates the rotation constants unpredictably. These four sets of three values differ between BEDBUG128, BEDBUG256 and BEDBUG512 and were selected, tuned and tested in each case for optimal avalanche, which is never less than 16.5 bits. BEDBUG has passed stringent industry-standard tests for randomness, including NIST and DIEHARD.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    *Unofficial* patch for DALnet's ircd, currently for version 1.4.36. Provides complete IPv6 and IPv4-in-IPv6 support and SSL support.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    BlackBelt WASTE - ipv4 / Tor / i2p + AI

    BlackBelt WASTE - ipv4 / Tor / i2p + AI

    A modern, AI-Smart, WASTE p2p for ipv4 and invisible address spaces

    A WASTE client. Download and create your own WASTE networks. For Windows XP 32/64, Vista 32/64, Win7 32/64, Win8 32/64, Win 10, Linux (WINE). *** NEW *** Distributed Autonomic-Performance-Tuning - A Goal-Seeking Swarming-Semiotic AI *** *** Built-in Self-Organising Anti-Spoofing Technology *** *** Medusa - Pure Ephemeral RNG - Routing, Security Extensions *** PLEASE ENSURE YOUR NETWORK USES THE SAME BUILD. FOR BEST RESULTS.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    An original bruteforce-based encryption/decryption system. BBE was originally conceived to chat with encrypted text on IRC. mIRC and X-Chat support BBE via script addon. BBE can also encrypt MIME encoded files. Blowfish encryption is currently supported.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    Cameloid is a new TCP/UDP based P2P voice and video encryption software, that will provide high level of privacy for all levels of communication using only quality secret-key ciphers to ensure long-term security.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    Crypt

    Crypt

    Crypt encryption and decryption is based on ASCII Table Shift.

    Crypt is the developed based on the ASCII Table shift and it can customized based on the user requirements, right from the shifting order and the level of encryption or decryption. It can be integrated to any of the programming language with the custom build of the source code. It can secure from text file to binary code.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    Delay Based Routing Protocol

    Delay Based Routing Protocol

    A distance vector routing protocol based on delay for IPv4 & IPv6

    A new routing protocol called Delay Based Routing Protocol (DBRP). It is a flexible distance vector routing protocol with a metric based on delay. It natively supports IPv4 and IPv6, and can also carry information for common services such DNS servers
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    Bouncer en localhost o lan, que permite capturar el trafico hacia un determinado canal de irc, cifrandolo con Rijndael, Serpent o Twofish. Y mostrando una salida por el canal en base64. Ideal para paranoicos.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    Encrypted Messaging and Authentication Protocol, Client and Server. This project is meant to further the development of the Encrypted Messaging and Authentication Protocol.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    Método y Sistema de voto electrónico vía e-mail utilizando par de claves asimétricas PGPl.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • 3
  • 4
  • Next