🔐 Encrypt & Decrypt Text with a Password in Python | PBKDF2 + Fernet Tutorial скачать в хорошем качестве

🔐 Encrypt & Decrypt Text with a Password in Python | PBKDF2 + Fernet Tutorial

In this quick and practical Python tutorial, learn how to encrypt and decrypt messages using only a password — no key files needed! We use PBKDF2HMAC to derive a secure encryption key from the password, and Fernet from the cryptography library to handle encryption. Whole code: from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC from cryptography.hazmat.primitives import hashes from cryptography.fernet import Fernet from base64 import urlsafe_b64encode Prompt for user action want = input("1. Encrypt data 2. Decrypt with pass
") Encryption part if want == "1": password = bytes(input("Password to encrypt to: "), 'utf-8') salt = b"m1oPwOfs9rwh430wLlRmjg==" # Fixed salt kdf = PBKDF2HMAC( algorithm=hashes.SHA256(), length=32, salt=salt, iterations=100_000, ) key = urlsafe_b64encode(kdf.derive(password)) f = Fernet(key) message = bytes(input("Enter the message to encrypt: "), 'utf-8') encrypted = f.encrypt(message) print("Encrypted:", encrypted.decode()) Decryption part elif want == "2": password = bytes(input("Enter password to decrypt: "), 'utf-8') salt = b"m1oPwOfs9rwh430wLlRmjg==" # Same fixed salt kdf = PBKDF2HMAC( algorithm=hashes.SHA256(), length=32, salt=salt, iterations=100_000, ) key = urlsafe_b64encode(kdf.derive(password)) f = Fernet(key) User provides the encrypted data encrypted_data = bytes(input("Enter the encrypted message: "), 'utf-8') try: decrypted = f.decrypt(encrypted_data) print("Decrypted:", decrypted.decode()) except Exception as e: print("Decryption failed:", str(e))