6214 Носов И.С. Лаб.3 Вар.12 #275
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Daria-creator-lab
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lab_1/encryption.py
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| # write_txt_file(file, dc_text.decode('UTF-8')) | ||
| # iv = os.urandom(16) | ||
| # cipher = Cipher(algorithms.AES(read_binary_txt_file(key_file)), modes.CBC(iv)) | ||
| # decryptor = cipher.decryptor() | ||
| # dc_text = decryptor.update(read_binary_txt_file(text_file)) + decryptor.finalize() | ||
| # unpadder = padding.ANSIX923(32).unpadder() | ||
| # write_binary_txt_file(file, unpadder.update(dc_text) + unpadder.finalize()) |
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удалите или используйте match/case для выбора режима
lab_1/main.py
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| paths = read_json_file("settings.json")["paths"] | ||
| key = gen_symmetric_key(32) | ||
| write_binary_txt_file(paths["key"], key) | ||
| print("Symmetric_key:", read_binary_txt_file(paths["key"])) | ||
| serialization_private_key(paths["closed_key"]) | ||
| print("Private_key:", read_binary_txt_file(paths["closed_key"])) | ||
| serialization_public_key(paths["open_key"]) | ||
| print("Public_key:", read_binary_txt_file(paths["open_key"])) | ||
| public_key = deserialization_public_key(paths["open_key"]) | ||
| encrypted_key = encrypt_key(key, public_key) | ||
| write_binary_txt_file(paths["encrypted_key"], encrypted_key) | ||
| print("Encrypted_key:", encrypted_key) | ||
| private_key = deserialization_private_key(paths["closed_key"]) | ||
| # decrypted_key = decrypt_key(encrypted_key, private_key) | ||
| text = read_txt_file(paths["text"]) | ||
| encryption_text(text, key, paths["encrypted_text"]) | ||
| decryption_text(paths["encrypted_text"], key, paths["decrypted_text"]) |
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Зачем все одним блоком запускать? А как же пользователь?
Дайте пользователю возможность работать по следующим сценариям:
- сгенерировать ключи по своему пути
- зашифровать свой собственный текст с указанием путей к своим собственным ключам
- расшифровать свой собственный текст с указанием путей к своим собственным ключам
Daria-creator-lab
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Sep 27, 2025
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| if args.generation: | ||
| print("Key generation") | ||
| key = gen_symmetric_key(32) | ||
| write_binary_txt_file(paths["key"], key) | ||
| print("Symmetric_key:", read_binary_txt_file(paths["key"])) | ||
| keys = gen_asymmetric_keys() | ||
| serialization_private_key(keys[0], paths["closed_key"]) | ||
| print("Private_key:", read_binary_txt_file(paths["closed_key"])) | ||
| serialization_public_key(keys[1], paths["open_key"]) | ||
| print("Public_key:", read_binary_txt_file(paths["open_key"])) | ||
| public_key = deserialization_public_key(paths["open_key"]) | ||
| encrypted_key = encrypt_key(key, public_key) | ||
| write_binary_txt_file(paths["encrypted_key"], encrypted_key) | ||
| print("Encrypted_key:", encrypted_key) | ||
| print("Key generation - successful") | ||
| elif args.encryption: | ||
| print("Text encryption") | ||
| nonce = get_nonce() | ||
| write_binary_txt_file(paths["nonce"], nonce) | ||
| encrypted_key = read_binary_txt_file(paths["encrypted_key"]) | ||
| private_key = deserialization_private_key(paths["closed_key"]) | ||
| decrypted_key = decrypt_key(encrypted_key, private_key) | ||
| print("Decrypted_key:", decrypted_key) | ||
| text = read_txt_file(paths["text"]) | ||
| encryption_text(text, decrypted_key, nonce, paths["encrypted_text"]) | ||
| print("Text encryption - successful") | ||
| elif args.decryption: | ||
| print("Text decryption") | ||
| nonce = read_binary_txt_file(paths["nonce"]) | ||
| encrypted_key = read_binary_txt_file(paths["encrypted_key"]) | ||
| private_key = deserialization_private_key(paths["closed_key"]) | ||
| decrypted_key = decrypt_key(encrypted_key, private_key) | ||
| decryption_text(paths["encrypted_text"], decrypted_key, nonce, paths["decrypted_text"]) | ||
| print("Text decryption - successful") | ||
| else: | ||
| key = gen_symmetric_key(32) | ||
| write_binary_txt_file(paths["key"], key) | ||
| print("Symmetric_key:", read_binary_txt_file(paths["key"])) | ||
| keys = gen_asymmetric_keys() |
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для выбора режима использовать match/case
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В ходе лабораторной работы была разработана гибридная криптосистема с использованием асимметричного алгоритма RSA и симметричного алгоритма ChaCha20. В модуле files_work.py реализована работа с файлами, модуль key.py отвечает за работу с ключами, их генерацию, сериализацию и десериализацию, модуль encryption.py отвечает за шифрование и дешифрование текста. Модуль main.py является точкой вхожа в программу.