Top-rated recipes tagged "encryption"

Public Key Encryption (RSA) (Python)

2012-05-12T23:34:22-07:00

Python recipe 577737 by Raymond Hettinger (encryption, inverse, multiplicative, primality_testing, primes, publickey, rsa). Revision 2.

Simple code to create and use public/private keypairs. Accompanied by a rudimentary encoder.

Public Key Encryption (RSA) (Python)

2013-12-27T06:43:59-08:00

Python recipe 578797 by Mohammad Taha Jahangir (encryption, inverse, multiplicative, primality_testing, primes, publickey, rsa). Revision 3.

Simple code to create and use public/private keypairs. Accompanied by a rudimentary encoder.

Simple Substitution Cipher Algorithm (Python)

2013-06-03T17:51:00-07:00

Python recipe 578544 by Captain DeadBones (cipher, encryption, python).

This script was written for an article I wrote It converts any plain text into a Caesar Cipher message. For more information Caesar Ciphers In Python

RSA: a simple and easy-to-read implementation (Python)

2014-03-01T18:56:19-08:00

Python recipe 578838 by Andrea Corbellini (encryption, learning, rsa, security).

This is a really simple RSA implementation. It does not want to be neither fast nor safe; it's aim is to provide a working and easy to read codebase for people interested in discovering the RSA algorithm.

Storing a Single Username and Encrypted Password to a File (Python)

2013-01-31T02:07:25-08:00

Python recipe 578443 by Captain DeadBones (encryption, file, python).

This script was written for an article I wrote to check user passwords. It stores data using SHA one-way function. For more information Authentication Of Users And Passwords In Python

Markov Encryption Demonstration 1 (Python)

2012-03-16T18:59:06-07:00

Python recipe 578062 by Stephen Chappell (demo, demonstration, encode, encoding, encrypt, encryption).

This is a simple GUI program that shows Markov Encryption at work. It is built to be interactive and has all needed code embedded within itself. This version of ME library is not very efficient and represents an early attempt at developing and easily testing the code. Certain limits are built into the program, and the code is not meant to be robust at this stage. This program is a proof-of-concept design meant to ensure that the work being done was viable for future use and that the encryption process could be carried out both ways, both in encoding plaintext and decoding ciphertext.

Encrypt and Decrypt Text and Text Files (BETA) Jython GUI (Python)

2011-11-23T05:37:04-08:00

Python recipe 577957 by Alexander James Wallar (cryptography, cryptology, decryption, encryption, encryption_decryption, files, hiding, text). Revision 3.

This is a Jython GUI of my previous recipe: Encrypt and Decrypt Text and Text Files

Encrypt and Decrypt Text and Text Files (BETA) (Python)

2011-11-22T04:18:15-08:00

Python recipe 577954 by Alexander James Wallar (cryptography, cryptology, decrypt, decryption, encrypt, encryption, hidding, math, python, text, text_files). Revision 7.

This program interactively lets you encrypt and decrypt text as well as text files using a key system as well as a cipher.

SMS_Encryption (Python)

2011-03-14T08:26:29-07:00

Python recipe 577606 by amir naghavi (acm, algorithm, encryption).

the answer of an acm problem to further explantion look at source code.

Novel JavaScript Text Compressor (JavaScript)

2011-01-31T15:41:36-08:00

JavaScript recipe 577557 by Stephen Chappell (compression, encode, encryption).

Compression, encryption, and data codecs are all related fields that most programmers will use ready-made solutions for. This recipe is a shallow adventure into the writing of original code and algorithms that explores a combination of those topics. Based on the work of recipe 577433, the code here is compliant with JavaScript and will run a test of itself when executed. From the program's report, one can gather that the novel procedures compress the source and accurately decompress it again. For those who wish to experiment further with the concept, note that fewer unique characters will yield higher compression ratios.

To get a copy of biginteger.js for the program to run and compression algorithm to operator, please go to http://silentmatt.com/biginteger/ and use the latest version of Matthew Crumley's excellent JavaScript big integer library.

Object id mask, against data spiders (Python)

2010-08-16T07:18:43-07:00

Python recipe 577359 by Chaobin Tang (唐超斌) (encryption, url). Revision 4.

A funny, simple, and efficient encrypt for an object ID. Always used against an unsolicited automated spider that scrawls your site to collect data.

SimpleCryptSocketExt - SimpleCrypt Wrapper for Easy Socket, Client / Server Encryption (Python)

2010-05-07T15:33:06-07:00

Python recipe 577212 by AJ. Mayorga (client_server, cryptography, encryption, server, socket). Revision 5.

Lightweight drop-in encryption wrapper for various Client/Server solutions supporting protocols such as UDP, TCP, HTTP, HTTPS, FTP, RAW Sockets etc.

Simple Small Tweakable Encryption Solution -- SimpleCrypt (Python)

2010-04-30T21:00:26-07:00

Python recipe 577174 by AJ. Mayorga (crypt, cryptography, encryption). Revision 6.

Encryption can sometimes be a nightmare, at least is my experience while Python has some excellent resources for encryption I found myself a lot of times needing an encryption solution that could port easily between VS C++, .NET, PHP, and Python projects that would be simple to implement and not rely on large bloated crypto libs.

RC4, ARC4, ARCFOUR algorithm (Python)

2009-05-03T09:45:59-07:00

Python recipe 576736 by Thimo Kraemer (algorithm, encryption, text). Revision 5.

RC4 generates a pseudorandom stream of bits (a keystream) which, for encryption, is combined with the plaintext using bit-wise exclusive-or; decryption is performed the same way (since exclusive-or is a symmetric operation).

(see http://en.wikipedia.org/wiki/RC4)

Code To Store Encrypted Password in a File (Python)

2013-01-19T04:07:50-08:00

Python recipe 578430 by Captain DeadBones (encryption, password, python).

This snippet of code was written as part of an article - Password Protecting You Python Application

Markov Encryption Module (for Python 2.5) (Python)

2012-07-25T22:33:03-07:00

Python recipe 578135 by Stephen Chappell (encryption, library, module, utility). Revision 4.

This module provides classes that are useful for executing Markov encryption and decryption on data. ME was inspired by a combination of Markov chains with the puzzles of Sudoku. This implementation is a rewrite from the Python 3.x version and includes various changes and optimizations to work with Python 2.5 and related versions. All documentation has been left in recipe 578075 and should be referred to there.

Markov Encryption Demonstration 2 (Python)

2012-03-14T17:39:17-07:00

Python recipe 578076 by Stephen Chappell (demo, demonstration, encode, encoding, encrypt, encryption).

This program is meant to act as an example of how to use ME with data that needs to be obfuscated. The functionality provided via the GUI demonstrates both the ability to encrypt and decrypt all text that the UTF-8 encoding can handle. Explanations come later.

Markov Encryption Module (Python)

2012-09-05T20:25:49-07:00

Python recipe 578075 by Stephen Chappell (encryption, library, module, utility). Revision 7.

This module exposes primitives useful for executing Markov Encryption processes. ME was inspired by a combination of Markov chains with the puzzles of Sudoku. This implementation has undergone numerous changes and optimizations since its original design. Please see documentation.

Text Compressor 3.1 (Python)

2010-10-20T00:50:15-07:00

Python recipe 577433 by Stephen Chappell (compression, encode, encryption).

Compression, encryption, and data codecs are all related fields that most programmers will use ready-made solutions for. This recipe is a shallow adventure into the writing of original code and algorithms that explores a combination of those topics. Based on the work of recipe 502202, the code here is compliant with Python 3.1 and will run a test of itself when executed. From the program's report, one can gather that the novel procedures compress the source and accurately decompress it again. For those who wish to experiment further with the concept, note that fewer unique characters will yield higher compression ratios.

File encryption using stream cipher (Python)

2010-03-20T14:53:48-07:00

Python recipe 577090 by FB36 (encryption, files, math). Revision 2.

File encryption/decryption using stream cipher. It can encrypt/decrypt any type of file.