Encrypting and Decrypting a .txt File Using Python’s Cryptography Library | by Faruk Ahmed
Faruk

Faruk @cyberwebpen

About: InfoSec Analyst | 10+ yrs in DLP, CrowdStrike, QRadar, Qualys, Linux Admin, WebLogic Admin | Python & Bash Enthusiast | Passionate about cybersecurity, automation, and continuous learning.

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Encrypting and Decrypting a .txt File Using Python’s Cryptography Library | by Faruk Ahmed

Publish Date: Apr 28
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Encrypting and Decrypting a .txt File Using Python’s Cryptography Library

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Introduction

Data security is a critical concern in today’s digital age, and encryption is one of the most effective methods to protect sensitive information. In this blog post, we’ll walk through the process of encrypting a .txt or any types of file and decrypting it using Python's cryptography library. By doing this, you can bypass a security detection.

Prerequisites

To follow along with this tutorial, you’ll need to have Python installed on your machine. Additionally, you’ll need to install the cryptography library, which you can do using pip:

pip install cryptography
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Step 1: Generate a Key

Before encrypting your file, you need to generate a key. This key will be used for both encryption and decryption. Here’s how you can generate a key and save it to a file:

from cryptography.fernet import Fernet# Generate a keykey = Fernet.generate_key()# Save the key to a filewith open('2_my-key.key', 'wb') as key_file:    key_file.write(key)
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Step 2: Encrypt the File

With the key generated, you can now encrypt your .txt file. Here's a script that reads the content of a file…


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