(1)加密(Encryption) 将明文变换为密文的过程。把可懂的语言变换成不可懂的语言。 (2)明文(Plaintext) 加密前的原始信息。 (3)解密(Decryption) 加密的逆过程,即由密文恢复出原明文的过程。把不可懂的语言变换成可懂的语言。 (4)密文(Ciphertext) 加密后的信息。 古典加密算法主要分为:
32)# 解密decryption_suite=key.decrypt(encryption_suite)```3.哈希加密：使用python标准库中的`hashlib...
# Caesar Cipher # https://www.nostarch.com/crackingcodes/ (BSD Licensed) import pyperclip # The string to be encrypted/decrypted: message = 'This is my secret message.' # The encryption/decryption key: key = 13 # Whether the program encrypts or decrypts: mode = 'encrypt' # Set to e...
第 35 到 38 行调用encryptMessage()或decryptMessage(),这取决于'encrypt'或'decrypt'是否存储在myMode变量中。 # Measure how long the encryption/decryption takes: startTime = time.time() if myMode == 'encrypt': translated = transpositionEncrypt.encryptMessage(myKey, content) elif myMode == 'de...
generate_keys() # 明文数据 plaintext = b"This is a test message for post-quantum encryption." # 使用后量子加密算法加密数据 ciphertext = encrypt(public_key, plaintext) # 解密数据 decrypted_text = decrypt(private_key, ciphertext) # 验证解密后数据是否正确 assert plaintext == decrypted_text ...
We will use symmetric encryption, which means the same key we used to encrypt data is also usable for decryption. There are a lot of encryption algorithms out there. The library we gonna use is built on top of the AES algorithm. There are many encryption uses in the real world. In fact...
Now that we have the function that is responsible for encryption, let's make the opposite, that's decryption:def decrypt_pdf(input_file: str, password: str): """ Decrypts a file using PyPDF4 library. Precondition: A file is already encrypted """ pdf_reader = PdfFileReader(open(input_...
()fileObj.close()print('%sing...' % (myMode.title()))# Measure how long the encryption/decryption takes:startTime = time.time()if myMode == 'encrypt':translated = transpositionEncrypt.encryptMessage(myKey, content)elif myMode == 'decrypt':translated = transpositionDecrypt.decryptMessage(...
For the convenience of # the user, we copy the text of the code to the clipboard: print('Copying hacked message to clipboard:') print(hackedMessage) pyperclip.copy(hackedMessage) else: print('Failed to hack encryption.') 如果hackedMessage不等于None,消息将打印到屏幕的第 19 行,并复制到剪贴...
ifhackedMessage !=None:# The plaintext is displayed on the screen. For the convenience of# the user, we copy the text of the code to the clipboard:print('Copying hacked message to clipboard:')print(hackedMessage) pyperclip.copy(hackedMessage)else:print('Failed to hack encryption.') ...