Open Source C Encryption Software - Page 3

The EaseFilter File Control SDK is a powerful development toolkit for creating robust, kernel-level file security and data protection solutions on the Windows platform. It includes a high-performance file system filter driver that intercepts and manages all file I/O operations in real time, giving developers deep, granular control far beyond what is possible with standard Windows APIs or Access Control Lists (ACLs). The EaseFilter Control Filter Driver provides a powerful method for intercepting file I/O operations at both the pre-operation and post-operation stages. This dual-layered interception enables comprehensive monitoring and enforcement of file access policies.

GDLOG is an implementation of the General Number Field Sieve algorithm for discrete logarithm problem in GF(p).

Use of Michael Rabin's Information Dispersal Algorithm to provide secure, dispersed storage in a networked environment. For full download, please get both Math-FastGF2 and Crypt-IDA releases under the files link. See project wiki for more information.

The hash latch generates keys in a manner similar to how some cryptocurrencies are mined. It takes a string and brute-forces a prefix for it so that the hash of the string with the prefix has a certain number of leading zeroes. But that alone would've been too easy to hack. To prevent an attacker from forging the keys by generating a new prefix: the hash latch doesn't output the keys in the plaintext. Instead, it encrypts the key and outputs the ciphertext. That means that instead of giving you the actual key, it gives you a safe containing the key. This approach allows the hash latch to protect itself from forged keys and also enables you to put the same key into multiple safes without the recipients of these safes knowing they have the same key (even if they compare their ciphertexts). Moreover, the hash latch verifies the integrity of a key after decrypting it (just in case). You can read the tutorial about it on Instructables: https://www.instructables.com/Hash-Latch/

The IEEE 1619 Committee open-source reference implementations of encryption algorithms, plus testing and certification suites, for each encryption algorithm included in the standard.

Encrypted Message Exchange by using Diffie-Hellman key exchange algorithm and Advanced Encryption Standard(AES) encryption algorithm with Cipher-block chaining(CBC) mode using User Datagram Protocol(UDP)port server-client application in C, Ansi-style

The LTC Encryption program is designed to implement the cryptographic functions contained in the libtomcrypt.a library. It works similar to PGP, but does not use the OpenPGP standards.

Simple, lightweight, cross-platform (Windows / Linux / ARM6 Linux), cross-arch (x32 / x64), standalone command line file encryption program. GnuPG is probably the best application for cross-platform encryption. However, its usage on Windows PCs may be inconvenient (installation administrator rights; large executable size for perhaps just a one-time file decryption, complicated command-line switches for stronger encryption). NCrypt would fulfill this task, but does not operate on 64-bit Windows - MLCrypt was created because of this. The program's primary aim is cascade encryption: create an encrypted outer layer over an existing compressed and encrypted archive file. (Each encryption layer should have a different complex password.) MLCrypt.zip contains all the executables: Linux, Windows, Raspberry Pi.

CryptoLib is a crypto library for PalmOS based on OpenSSL, which implements BlowFish algorithm, and is intended to support any other crypting algorithm in the future.

The Mav.Crypt tool will be upgraded to many different encryption methods. At the Moment, the only method is ROT13, but we are developing some other technics and a new Algorithm. More Infos shortly at the Project Web Page.

NCrypted is a simple file encryption software. It is implemented on top of AES 128-bit algorithm. This software was designed to be as simple as possible, so you won't find any fancy, flashy gui elements or complicated advanced options. You can also use it directly from command line. NCrypted can automatically detect and take advantage of your NVidia graphics card to speed up the file processing.

NoFault is a library written in C used to encrypt or decrypt data with XOR encryption. KNoFault, NoFault32 and CLNoFault are direct applications of the library, which is easy to use in your own programs.

One-time password generator for the Nokia N900. Supports OAUTH tokens (HOTP, TOTP) as well as the Mobile-OTP algorithm.

Transparent file encryption performs real-time I/O encryption and decryption of the files in any block data with 16 bytes. The encryption uses a 256 bits symmetric key to encrypt or decrypt the data with AES encryption algorithm. Auto file encryption protects data "at rest", meaning the transparent data and files encryption. It provides the ability to comply with policies which can be applied by users, processes and file type. This allows only authorized users and processes to access the encrypted files, unauthorized users and processes can’t access the encrypted files. The Auto FileCrypt Tool was developed with EaseFilter Encryption Filter Driver(EEFD) SDK, a file level encryption filter driver. Run the auto file encryption service with administrator permission, add the managed folders as encryption folder, when the files were added to the managed folder, the files will be encrypted automatically, when files were read, the data will be decrypted in memory automatically.

Open OMA DM is a open source OMA server provide a C based DM server. Database is using MySQL. Multi-thread is using libevent. Encryption library is openssl.

PHP Screw is a PHP script encryption tool. When you are developing a commercial package using PHP, the script can be distributed as encrypted up until just before execution, preserving your intellectual property.

PalmOS MD5 algorithm Shared Library

A command-line to help encipher and decipher your password based on a simple algorithm. Java version provides GUI.

Pot of Gold is an open source implementation of Philippe Oechslin's "Faster Cryptanalytic Time-Memory Trade-Off" paper. It performs precomputation on a particular hash algorithm which can be later used to reverse certain hashes.

The PowerCiph Data Encryption Algorithm is a versatile, yet simplistic, encryption algorithm/protocol. The ultimate goal of the algorithm is simplicity, compactness, and a lack of prerequisites.

ActiveX OCX to encrypt files with a very fast implementation of AES 256 bits and standard RC4, for news and improvements visit http://rspencdll.sourceforge.net/

Real-Time Proactive Secret Sharing Library for RTAI is an implementation of the Shamir's secret sharing scheme and Herzberg's proactive secret sharing algorithm. The library uses a port of GNU GMP in order to make multiple precision arithmetic operatio

Rinecrypt uses the Gladman implentation of the AES algorithm Rijndael and a SHA256 hash among other things, to encrypt/decrypt a file with a user supplied passsword.

SES brings back the uncrackable onetime pad, with a digital twist. It is well known that a random key of message-length is the only provably unbreakable cipher. SES uses cryptographic strength pseudo-random keys of message-length for its many encipherments, in addition to offering true one-time pad capability for the intrepid. SES is built on ISAAC, Bob Jenkins' unbroken CSPRNG, a fast and simple stream cipher placed in the Public Domain in 1996. SES now gives you the ability to efficiently cipher text of arbitrary length or files of any size or type. Use it with confidence. To achieve complete one-on-one privacy, SES traverses several levels en route to its output. The more words in your key-phrase, the more layers of encipherment SES applies. It is part Vigenere, part onetime pad, part cryptographic hash, not to mention the essential scrambler element, each component driven by ISAAC, with all key-derivation and stretching relying on Keccak in 512-bit configuration.