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Go to github.com/vlm/asn1c for the latest version.
This ASN.1 compiler turns ASN.1 specifications into C code. The asn1c is shipped together with conformant BER/DER/XER/PER codecs. The X.509, GSM TAP3, MEGACO, RRC and LDAP encoding and decoding examples are part of the source code distribution.
NOTE: THE asn1c PROJECT HAS LARGELY MOVED TO GITHUB: http://github.com/vlm/asn1c
OhCrypt lets you easily encrypt and decrypt files using some of the most popular algorithms, like AES, Blowfish and Serpent. With OhCrypt, you can secure your data with a password-based encryption algorithm through a clean and simple interface. It demonstrates state of the art of cryptology techniques, such as password hashing and salt. Ohcrypt also features self-extractable and self-destructive encrypted files
The project provides functionality to interface the SmartCardIO Java SDK library to Global Platform compliant smart cards, similar to globalplatform.sf.net. The difference is pure Java implementation and easy plug in to your SmartCardIO applications.
This project is now more or less subsumed by Martin Paljak's continuation of the project at https://github.com/martinpaljak/GlobalPlatformPro.
Auth0 Token Vault handles secure token storage, exchange, and refresh for external providers so you don't have to build it yourself.
Rolling your own OAuth token storage can be a security liability. Token Vault securely stores access and refresh tokens from federated providers and handles exchange and renewal automatically. Connected accounts, refresh exchange, and privileged worker flows included.
CryptDS is cross platform file encryption software with AES-128 encryption based on Open Source library Crypt++. CryptDS has a wxWidgets GUI interface.
SD4L is a suite of Linux tools including a graphical userinterface which allow the creation of, and access to ScramDisk as well as TrueCrypt encrypted container files. In particular, SD4L provides a Linux driver which enables mounting of containers.
Tool for encrypting files using blowfish, aes, des or cast5,
File hashing with md5, sha and ripemd160,
compresssion with gzip, and a nice userinterface.
Created using C++ with Qt framework, depends on QCA third-part Qt Library and OpenSSL.
Simple tool for file encryption and folder content encryption with AES 256. Files can also be hashed with a SHA1 signature. A command line version is available as well as a GUI version. One other useful feature is to encrypt messages for emails.
Kryptographie is a student project to implement historic encryption methods. It has a linux style command line interface. This project will also include the notes for my talk I'll hold on cryptography in school. (in German).
Mailcrypt is an Emacs Lisp package which provides a simple interface to public key cryptography with PGP [and now GnuPG!].
Mailcrypt makes strong cryptography a fully integrated part of your
normal mail and news handling environment
This is the extended euclidean algorithm implemented in haskell.
It will put every single step of the algorithm in a file and show the actual result and everything in between.
Shasummer is a SHA hashsum utility in Java. It can calculate SHA1, SHA256 and SHA512 hashes of a file or of a directory (and its subdirectories) and verify the hashes later. Shasummer has a graphical and a command-line interface.
Safe all your passwords and encrypt them with a single password? Yawn. Synchronize your encrypted entries between different machines? Without compromising your security? Here comes SyncYourSecrets
OW.NET -- 1-Wire API port from Java (and J#) to C#. Use the Dallas 1-Wire and iButton chips with standard C# using a serial adapter (also CF.net) or the TMEX drivers on the Windows platform. No J# distribution installation required.
Merovingian is very easy to use but powerful GUI interface for GnuPG. It intends to be well integrated with GNOME, but still usable with other desktop environments too.
HashserGUI is a GUI interface for Jacksum. It is intended to provide a graphical tool to create hashes for files within a directory, and check the hashes generated. It works with many hash functions, as md5, sha1, sha256, sha512, md4, crc, etc.
Hasher is a .NET class library to help programmers implement standard hashing and checksum algorithms into their own software. Written entirely in C#, Hasher providers a uniform interface to easily use any of the algorithms contained within this library
GiANT is a graphical interface for computer algebra systems (OS X/UNIX/Win). Currently GiANT lets the user work with number fields via KASH, but we aim to develop it into a GUI Library to run on top of any CAS and expose any of its functions.
Set of tools and libs for
managing structured data
in a very flexible way:
Imp./Exp. ASCII, XML, SQL,
PS, Tex/LaTex, RTF
GUI: X-Windows, MS-Windows
Interface to C++, DBs, Perl,
PHP, Java, TCP/IP
LISP-like interpreter
written in C++ using C-LIB