GPG-Crypter is a graphical front-end to GnuPG(GPG) using the GTK3 toolkit and GPGME library.
It has been developed to provide an easy access to GPG encryption and decryption. It supports encryption and decryption of text entered into the program's input fields. It also supports file encryption and decryption.
libstego is a set of libraries that implement functionality to embed secret data into a wide range of image file formats and uncompressed audio formats.
A C library with support for logging, configuration, networking, message specification, semaphores, message queues, SSL, timing, epoll and email functionality.
BeeCrypt is an ongoing project to provide a strong and fast cryptography toolkit. Includes entropy sources, random generators, block ciphers, hash functions, message authentication codes, multiprecision integer routines, and public key primitives.
The Cryptographic Implementations Analysis Toolkit (CIAT) is compendium of command line and graphical tools whose aim is to help in the detection and analysis of encrypted byte sequences within files (executable and non-executable).
CryptKit is a small, fast cryptographic toolkit for python. It implements Rijndael(AES), SHA 256, Elliptic Curve PKI, Diffie-Hellman key exchange and Nyberg-Ruppel signature/verification. Comprehensive enough to provide a secure socket alternative to SSL
A project to provide a GUI toolkit to facilitate (and where possible, automate) the breaking of classical (pen-and-paper) cryptosystems. Initial focus is on the cryptanalysis of monoalphabetic substitution ciphers.