Cryptography
Secure Communication Techniques
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Encrypting and decrypting data in Python can be done securely using modern cryptographic libraries. Below are two widely used approaches for implementing this functionality.
Symmetric Encryption with Fernet
Steps:
Install the library
pip install cryptographyCopied!âś•CopyGenerate a key and encrypt/decrypt data
from cryptography.fernet import Fernet# Generate keykey = Fernet.generate_key()fernet = Fernet(key)# Original messagemessage = "Confidential Data"# Encryptencrypted = fernet.encrypt(message.encode())print("Encrypted:", encrypted)# Decryptdecrypted = fernet.decrypt(encrypted).decode()print("Decrypted:", decrypted)Copied!âś•CopyNotes: The same key is used for both encryption and decryption, so it must be stored securely.
AES-GCM Encryption
Steps:
Install the library
pip install cryptographyCopied!âś•CopyImplement AES-GCM encryption/decryption
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