Python for Secret Agents

Conventions

In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.

Code words in text, package names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "The size_list variable is a sequence of eight-tuples built from the bytes of the encoded size."

A block of code is set as follows:

message_bytes= message.encode("UTF-8")
bits_list = list(to_bits(c) for c in message_bytes )
len_h, len_l = divmod( len(message_bytes), 256 )
size_list = [to_bits(len_h), to_bits(len_l)]
bit_sequence( size_list+bits_list )

When we wish to draw your attention to a particular ...