Top-rated recipes tagged "encrypt"

Use rot13 to en/decrypt clear text (Python)

2012-11-07T09:17:51-08:00

Python recipe 578322 by Eric.sun (encrypt, python3).

Encryption.Using your solution to the previous problem, and create a "rot13" translator. "rot13" is an old and fairly simplistic encryption routine where by each letter of the alphabet is rotated 13 characters. Letters in the first half of the alphabet will be rotated to the equivalent letter in the second half and vice versa, retaining case. For example, 'a' goes to 'n' and 'X' goes to 'K'. Obviously, numbers and symbols are immune from translation.

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) (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.

Authenticated encryption with PyCrypto (Python)

2010-01-26T16:05:50-08:00

Python recipe 576980 by Daniel Miller (aes, encrypt, hmac, pycrypto). Revision 3.

PyCrypto-based authenticated encryption using AES-CBC and HMAC-SHA256. This class only supports shared secret encryption. Look elsewhere for public key encryption.

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.