Message = rsa.encrypt(message.encode(),                          publicKey) print(“original string: “, message)print(“encrypted string: “, encMessage) decMessage = rsa.decrypt(encMessage, privateKey).decode() print(“decrypted string: “, decMessage)

How to Write an Encryption Program in Python? AskPython

Encryption with python is the most straightforward task, as python has a package called cryptography. This package is used to encrypt and decrypt messages.In todays world, where cybersecurity crimes and hacking prevail, we must be careful with sending or receiving data. Data in its purest form can be easily tapped and misused. So we must use encryption while dealing with confidential or personal data.

There are several methods to encrypt and decrypt messages using Python libraries such as PyCryptoDome, cryptography, and PyNaCl. Each method has its own strengths and weaknesses depending on the specific requirements of your application. In this tutorial, we will explore four different encryption techniques in Python: Fernet, AES with CBC mode, RSA, and NaCl.

Method 1: Using the cryptography librarys Fernet. It’s a secure and easy-to-use method that uses symmetric keys for encryption and decryption. The key is generated randomly during initialization and can be used to encrypt and decrypt messages. This technique is suitable for applications where security is not the primary concern, but confidentiality is still required.

Method 2: Utilizing PyCryptoDomes AES with CBC mode. It’s a robust encryption method that uses Advanced Encryption Standard (AES) and Cipher Block Chaining (CBC) for data integrity. The key and initialization vector are generated randomly during initialization, ensuring the security of encrypted messages. This technique is suitable for applications where high-security standards are required.

Method 3: Using PyCryptoDomes RSA. It provides secure data exchange between two parties without sharing a secret key. This method uses public and private keys to encrypt and decrypt messages, respectively. The sender’s public key is used for encryption, while the receiver’s private key is used for decryption. This technique is suitable for applications where security is paramount but requires data exchange between two parties without sharing a secret key.

Method 4: Utilizing PyNaCl for public-key encryption. It offers high security and ease of use with fewer options for customization. The keys are generated randomly during initialization, ensuring the security of encrypted messages. This technique is suitable for applications where high-security standards are required but require a simpler implementation than RSA.

Bonus Method 5: Using base64 for simple encoding/decoding. Although it’s not encryption and should not be considered secure for sensitive data, it can obfuscate text and meet basic encoding needs for non-critical use cases where security is not a concern. This technique is suitable for applications that require some level of obfuscation but do not have high-security requirements.