Open Source Cryptography Software - Page 9
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Smoke Crypto Chat Messenger for Android
Smoke: Android Crypto Chat Messenger
Smoke is an encrypting chat messenger for Android written in Java. Please read the Web site for more information: https://textbrowser.github.io/smoke/ (original, current) https://www.amazon.com/dp/3752691999/ https://smokeappope.sourceforge.io/ (old, third party archive) Smoke App OPE - Open Personal Encryption Download Android APK Installer: https://sourceforge.net/projects/smokeappope/files/ Smoke Source: https://github.com/textbrowser/smoke SmokeStack Source: https://github.com/textbrowser/smokestack (Android) https://github.com/textbrowser/spot-on (Desktop) Smoke appears to be one of the first projects with an open source mobile encrypting chat server., an decentralized and easily-configurable chat server. Smoke is known as the first mobile McEliece Messenger: https://tarnkappe.info/artikel/english/mceliece-messaging-smoke-crypto-chat-the-first-mobile-mceliece-messenger-published-as-a-stable-prototype-worldwide-279847.html -
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WinHasher
Very simple file and text hashing tool for Windows
Tiny script will find hash digest of files or text by calling on Microsoft's "certutil.exe", using MD4, MD5, SHA1, SHA256, SHA384, or SHA512. Simple and self explanatory. *EDIT 5/3/25, I just realized that there is another project entitled "WinHasher", it appears to kind of do the same thing but uses native code rather than Microsoft's "certutil". If that's what you're looking for, it's here: https://github.com/gpfjeff/winhasher -
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MongoDB Atlas runs apps anywhereMongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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maraithal
Implementation of basic LSB stegnography on PNG images
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v1pad
One-time-pad encryption using a virtual pad
v1pad is a command-line tool that encrypts and decrypts files using one-time-pad encryption. v1pad uses a virtual pad, meaning that the one-time pad is generated dynamically based on user input instead of being stored in a file. The name v1pad is an abbreviation for Virtual One-Time Pad. -
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Caditor is a portable tabbed text editor featuring encryption, syntax highlighting, autocomplete, line numbering and a functional plugin system.
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Calypso is a file sharing client using the anonymous network MUTE. Developped using C++ and Qt. For windows and linux, portable to other environments.
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Secure File Transfer for Windows with Cerberus by RedwoodCerberus supports unlimited users and connections on a single IP, with built-in encryption, 2FA, and a browser-based web client — all deployable in under 15 minutes with a 25-day free trial.
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A program to verify and write checksumfiles. It supports SFV and MD5 , even some exotic MD5 file types. Very easy to use, with a wizard interface.
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Enigma CS (Coding Software)
Create and use your own personalized, very secure, encoding script!
Create and use your own personalized, yet very secure, encoding script! -
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SSL Diagnos
SSL Strength Evaluation and Test Utility
SSL Diagnos is used to test SSL strength; get information about SSL protocols (pct, ssl2, ssl3, tls, dtls) and cipher suites. It can also be used for testing and rating ciphers on SSL clients. It has also specific support for pop3s, sip, smtp and explicit ftps. Tests for heartbleed (including dtls). Furthermore a separate tool, SSLPressure, not using openssl can be used to check the whole spectrum of possible SSL protocols on a server. Can also be used for testing ssl for mssql-servers (was added since nessus did not support this) and contains mitm poc for stripping ssl from mssql-connections. -
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SecuXabber
A secure Jabber-client for Android using strong encryption
SecuXabber is a secure Jabber-client for Android that bases on Xabber and uses a strong, asymmetric enryption that works on top of the XMPP protocol. A key pair is generated on application start-up. Users can send their public key to other SecuXabber users via Bluetooth. This ensures the origin of the public key because people do a face-to-face check during key exchange. After the keys are imported by both users, all communication between them is done fully encrpyted using a strong 4096 bit end-to-end encryption. -
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StrongKey CryptoEngine
FIDO strong authentication, encryption, digital signature engine
StrongKey CryptoEngine (SKCE) 2.0 is a "crypto Swiss Army knife" server to perform cryptographic functions through web services, while freeing application developers to focus on business functionality. Its modules include: - A FIDO Engine to support FIDO U2F key registrations/authentications - An encryption engine to encrypt/decrypt files using AES/TDES keys - Escrowing keys to on-premises key management system (StrongAuth KeyAppliance/SAKA) - Integration to cloud storage services (AWS S3, Azure and Eucalyptus Walrus) - A signing engine to digitally sign documents, code, etc. with FIPS 140-2 HSM support - An LDAP Engine for AD/LDAP integration for authorization decisions SKCE is battle-tested and in production at one of the largest e-commerce companies in the world, protecting more than 50M documents within the business process; see http://bit.ly/14VPYlO for the case study. Download StrongKey CryptoCabinet (SKCC) on this site to see how to use SKCE. -
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AAD-50
Zero-trust storage erasure. Hardware-verified data destruction.
AAD-50 is an open-source NVMe sanitization framework that closes a 15-year verification gap in Linux nvme-cli. The standard nvme sanitize command returns immediately after acceptance without confirming the drive actually completed the background erasure. AAD-50 fixes this by polling NVMe Log Page 0x81 (Sanitize Status) after every cycle and refusing to advance until SSTAT=0x1 confirms hardware completion. Implements a 50-cycle B→C→A phase matrix: 40 cycles NAND overwrite, 5 FTL block erase, 5 cryptographic key destruction. Generates a SHA-256 tamper-evident audit chain and PDF Certificate of Destruction aligned with NIST SP 800-88 Rev.2 Purge, IEEE 2883-2022, and IEEE 2883.1-2025. Runs on Linux CLI, Windows CLI, and Windows GUI. Supports USB enclosure passthrough via 3-tier SCSI/ATA pathway. Adopted into linux-nvme/nvme-cli master (PR #3438) in 14 days. Reviewed by Peter Gutmann (Gutmann 35-pass method). Confirmed by NVM Express Administration as recommended best practice. -
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The goal of the AppCrack project is to allow users to decompile/disassemble .exe programs (allowing users to see the source code) using a simple program instead of long, tedious, unreliable solutions like debuggers.
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BinaryCrypt
Binary Conversion Calculator
With BinaryCrypt, you can convert between regular text, binary, hexadecimal, octal decimal and decimal. You can convert only decimal (as of right now) to any base up to base 64. You can also save your converted text to a file or open a converted text file to decrypt the message, and perform basic arithmetic in binary. The git repo for the C# code is located at: https://github.com/m1r4g3/BinaryCrypt-.Net -
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CipherPic
Encrypt and decrypt an image
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ClearPass (formerly BlowPass) is web based password storage system that uses the Blowfish algorithm and a Host-Proof design pattern.
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CryptKeeper
Encryption/Decryption Application
Basic text file encryption & decryption. Can encrypt text files with or without formatting. CryptKeeper is the upgraded version of EnCREEPtor. -
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Encrypts, decrypts, sign, and verify text and binary messages using CryptoAPI. Also compresses and send those messages via a TCP/IP network.
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DSIG Verification Tool
Verify digitally signed content based on W3C XMLSignature standard
Starting July 2026, StrongKey will start distributing new releases of its open-source software with digital signatures using the W3C XMLSignature (DSIG) standard. This project distributes CLI and GUI versions of software that can verify the signed package containing the content, signature and certificate chain. -
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Enigma
Secure Striker Manager
Copyright (C) 2016 Jonas Penno This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses. -
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Ganzúa is a cryptanalysis tool for classical ciphers (mono and polyalphabetic) that lets the user define almost completely arbitrary cipher and plain alphabets, allowing for the proper cryptanalysis of cryptograms obtained from non-English texts.
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Halimede
Halimede Certificate Authority
Halimede is a simple to use Certificate Authority. It supports multiple CA (Certificate Authorities) from a single interface, with each CA is stored within it's own datastore instance. Halimede supports a large range of public key ciphers, including RSA, DSA, ECDSA (NIST/SEC/ANSI X9.62/Brainpool Curves), EdDSA (ED25519/ED448), GOST R34.10, DSTU 4145-2002 and numerous Post-Quantum Ciphers including Rainbow, SPHINCS-256, XMSS/XMSS-MT and qTESLA for X509 Certificate generation. Halimede is available as either a Standalone Application, as a Plugin for the Eclipse IDE, or can be integrated with any other Eclipse e4 RCP based application.