There are lots of code without documentation. Documentation gives a clear understanding of code.

Anyone can get it easily. Hence documentationis necessary. Feel free to create PR. Code that lets you hide an image in another image and decode it again without information loss. The codes of EncryptGAN. This is a project in cryptography that involves implementing image encryption using various chaos maps and comparing their merits based on key sensitivity. Minimalist symmetric AES image encryption module for paranoids. A simple Matlab implementation of the algorithm presented in the paper: "Reversible-data-hiding-in-Encrypted-image".

After encryption we uploaded this encrypted file to google drive by authenticating the users. A program that encrypt content of a Folder - Images and Text Documents and after that can decrypt. Add a description, image, and links to the image-encryption topic page so that developers can more easily learn about it.

Curate this topic. To associate your repository with the image-encryption topic, visit your repo's landing page and select "manage topics. Learn more.

**Asymmetric encryption - Simply explained**

Skip to content. Here are 25 public repositories matching this topic Language: All Filter by language. Sort options. Star Code Issues Pull requests.In this resource you will learn about the ideas behind public key cryptography PKCincluding the concepts of a public key and a private key. With this background on PKC, you will test your understanding by answering questions and completing a Python programming challenge. You will then use the OctaPi to find prime factors with a brute-force method.

Inthe American mathematicians Whitfield Diffie and Martin Hellman published a method for securely exchanging cryptographic keys in public. For many years this was the story of PKC. However, in GCHQ declassified and published work done for them in the early s by British mathematicians that showed that the key concepts of public key cryptography had been originally discovered in the UK.

Up to that point, this had all been kept secret by the UK government. It is very similar to the Diffie-Hellman technique, but predates it by several years.

Note that the story of public key cryptography in this book pre-dates the GCHQ announcement in Contents Introduction What you will need Step one - What is public key cryptography? Step two - How can a key be public? Step three - How are keys chosen?

Save your progress! Sign in to or create a Raspberry Pi account to save your project progress and come back later. OctaPi: Public Key Cryptography In this resource you will learn about the ideas behind public key cryptography PKCincluding the concepts of a public key and a private key.

## Cryptography/Open Source Cryptography

The story of Public Key Encryption Inthe American mathematicians Whitfield Diffie and Martin Hellman published a method for securely exchanging cryptographic keys in public.You can download all these projects with source code for free; make sure to check their individual post description as well.

They quickly become able to write programs that include functions, arrays and pointers, file handling and data structure, etc. But, when it comes to building a mini-game, an application, or a small project, incorporating all these features in one compact program becomes difficult. In such case, reference projects always come in handy. Most of these projects utilize functions, file handling, and data structure effectively. In some large and somewhat complicated projects, comments are provided in the multiple lines of the source code to help you understand the project better.

More projects for you! There are always some rooms to add new features, and make the project a even better one. Also, if you have a project request, you can mail us or mention your queries in the comments below. I need college time table based on some constraints like number of teachers etc.

So can u plz give some ideas? A warning message should be displayed if a student is taking more than 21 credits hours and less than 15 credit hours. Source code already added after first pera in above post you need to unlock it by sharing on facebook. Sir, could u plz mail me project on the car showroom management system.

All the project available with us can be searched for and found in the site. Can You please give me a dictionary code using file handling? But you can refer Bus Reservation System Project. These are the most simple and easy projects we developed. Is there any website are available? Please, Google it; you may find something useful. Please be more specific. What is your project? You can download that code from here. It is my project. Thankyou in advance!

Use this as a reference project. Emailing System: Design a simple email messaging system. A message has a recipient, sender, time and message. A mail box can store message. Supply number of mail boxes for different users. Provide following user interfaces a. Login b. Send message to other users c.

Read their own message d. Log out. Please Help me out!. Tic Tac Toe Source Code.In decryption also we must have two level of decryption you can take reverse level of encryption. Learn more about Scribd Membership Home. Read Free For 30 Days. Much more than documents. Discover everything Scribd has to offer, including books and audiobooks from major publishers. Start Free Trial Cancel anytime. Encryption and Decryption Project in C.

## Cryptography and its Types

Uploaded by aanishkumar Document Information click to expand document information Description: Mini project in C programming language. Date uploaded Sep 07, Did you find this document useful?

Is this content inappropriate? Report this Document. Description: Mini project in C programming language. Flag for inappropriate content. Download Now. Related titles. Carousel Previous Carousel Next. Telecommunication Switching system Control of Switching system. Intelligent Transport Systems and Effects on Road. Jump to Page. Search inside document.Modern cryptography is the one used widely among computer science projects to secure the data messages. This tutorial covers the basic concepts of cryptography and its implementation in Python scripting language.

After completing this tutorial, you will be able to relate the basic techniques of cryptography in real world scenarios. This tutorial is meant for the end users who aspire to learn the basics of cryptography and its implementation in real world projects. This tutorial is also useful for networking professionals as well as hackers who want to implement new frameworks instead of following a traditional approach.

Throughout this tutorial, you will learn the basics of cryptography, algorithm description and its implementation in Python. This tutorial is designed with an assumption that the user has an understanding on the basics of cryptography and algorithms. If you are a beginner to these topics, we suggest you to go through tutorials related to them, before you start with this tutorial.

### Cryptography in C#

Previous Page Print Page. Next Page.Skip to main content. Search form. The following C project contains the C source code and C examples used for small rsa to cryptography.

To secure your message with encrypt process and return your message with decrypt process. The following C project contains the C source code and C examples used for small elliptic curves cryptosystem ecc to cryptography. This is a schema of cryptography : 1.

Key exchange 2. The following C project contains the C source code and C examples used for small elliptic curve to cryptography v0. This program to development keylength till 9 digit : 1. The following java project contains the java source code and java examples used for java encryption using bowfish private key cryptography. To encrypt and decrypt the all kind of files to prevents unauthorized access by othters people.

The following java project contains the java source code and java examples used for cryptography and steganography. The following java project contains the java source code and java examples used for crypto.

This program demonstrates how to encrypt and decrypt text messages using Blowfish Cipher with the Java Cryptography Extension. The following java project contains the java source code and java examples used for cryptography using java in netbeans ide.

This is used to encryption and decryption purpose for security purpose in Java platform using Netbeans IDE. The following Matlab project contains the source code and Matlab examples used for factors of a semiprime number.

The function calculates the two prime factors of a semi prime number. If the two numbers are close to each other, Fermat's Theorem is used.

The function could be useful in cryptography, especially RSA. The following Matlab project contains the source code and Matlab examples used for basic string cryptography.

The following Matlab project contains the source code and Matlab examples used for matlab for cryptography. In cryptography, s-box is used for confusi principle, how to know the s-box is strength we use the bent function test of course for the s-box.

The following Matlab project contains the source code and Matlab examples used for linear feedback shift register. The following Matlab project contains the source code and Matlab examples used for shamir's secret sharing. Shamir's Secret Sharing is an algorithm in cryptography. The following Matlab project contains the source code and Matlab examples used for implementation of rsa algorithm. RSA is an algorithm for public-key cryptography that is based on the presumed difficulty of factoring large integers, the factoring problem.

The following Matlab project contains the source code and Matlab examples used for distributed storage based on secret sharing schemes d4s.

In cryptography, secret sharing means a technique for sharing a secret to a group of members, each of which holds a portion of the secret. The following Visual Basic project contains the source code and Visual Basic examples used for three types of simple cryptography.

This is a VB5 project with two forms for encoding and decoding information. The following Visual Basic project contains the source code and Visual Basic examples used for simple cryptography.

This is an introduction to crytography which is a lot simpler than the other algorithms here. So I figured someone had to fill this hole.Secret key cryptography is known as symmetric encryption algorithm. Same algorithm is used by receiver and sender while secret key for decryption and encryption.

### Java Projects On Cryptography

Encryption key could be generated quickly. In a secure way, secret key could be exchanged. The major challenges faced here is slow encryption. Blocks and keys of variable length are used for encryption. For encryption and decryption purpose various algorithm and keys are used in asymmetric algorithm. It is based on factoring problem. The prime number p and q for generating public and private key are selected in this algorithm.

Multiplication of 2 prime numbers private key is generated and multiplication of p-1 and q-1 public key is generated. In a secure way private key is shared on a public communication channel. Common numeric values are accepted by sender and receiver and then secured key is created. It is at times called as digital signatures standards. Message direct algorithm is other name of hashing function.

For encoding of plain text fixed length of hash value is used. Digital finger print of secure content is used for hash function that could not be altered by unauthorized users. To encrypt the operating system password it is used. Integrity of secure contents could be measured. Large number of secure messages could be encrypted in MD5. Many encryption applications use MD5.

Last block of key with plain text message is send to receiver. Through this multiple secret sharing is obtained. In a set of secret images more than one secret message can be stored through this method.

Efficiency of encoding is quiet poor in this method. Number of pixels equals the encoding length while secret image conversion. First a pixel from original image is created as many sub pixels. These sub pixels are then converted into C color region.