cracking | My cracking the coding interview | Learning library

I am working on a project that uses sensitive information (such as a password) and does something with it. The issue is that I do not want that information anywhere accessible on my computer. After doing much research I found the best few solutions here. Here are them in order

1. Its first recommendation is to encode your python file into pyc however "there are ready-made decompiler tools, and the cracking cost is low"

2. The other would be to obfuscate but I believe the password would still be in the file or at risk of being found out.

3. Then there is py2exe- however, I want it to have the ability to run on multiple platforms (macOS and Linux). It could also still be decompiled according to the website above.

4. The last would be to use cythonize which makes it difficult to crack however feels extremely convoluted- I would also have to recompile for Windows and Unix as well- but it works.

I also tried using input() in my code but I found that what you type in the console is stored as well as displayed on your screen.

Is Cythonize the only way to simply make the code encrypted? Or hide the password in some way?

I've recently started Cracking the Code Interview and I just got to LinkedLists. I did problem 2.1 to remove duplicate entries from the book's implementation of LinkedList.

When I time the removal of dupes, I see the book's implementation is faster than Java LinkedList.

I've implemented four dupe removal methods, each with a different parameter. The book's LinkedList implementation is referred to as Node.

I am required to write a function mirrored(q) to modify a queue so that it mirrors the queue in Python using stacks? For eg calling the function on the queue [1,2,3,4] would produce [1,2,3,4,4,3,2,1].

I know how to reverse the Queue using a stack but don't know how I can modify q to produce the whole mirrored queue (original order and reversed order) and not just [4,3,2,1]

This is where I got so far:

REF: https://portswigger.net/daily-swig/ip-spoofing-bug-leaves-django-rest-applications-open-to-ddos-password-cracking-attacks Reported Date: Jan 11 2022

• Other than providing captcha, what security measure should be taken?
• Which version of Django and/or Python is affected by IP Spoofing?

I am using FeignClient for Rest API calls, here is Use case as explained below.

I am having 2 different Services which are Authorized with Basic Authentication, with both different Authentications.

Service-1(SpringBoot Microservice) running with below configuration

I'm trying to use pySerial running on an Ubuntu host to automate testing of an embedded controller. I can enter commands in a terminal window (e.g., PuTTY) and get responses from the EC all day long. However, when I try using a pySerial program to do the same thing, the EC stops echoing the commands after some time, right in the middle of echoing a command. From that point forward, the EC stops responding to the program, including not sending results from the command that was interrupted.

If I terminate the program and try to connect to the EC with a terminal again, the EC is unresponsive. If an external event happens that causes the EC to write output to the terminal, that information is displayed correctly. The problem persists until I reboot the EC - which also erases any logs of what was happening on the EC when the problem occurred. (The logs are only accessible through the serial port...)

It appears that something pySerial is doing causes the EC's input processing to stop. I tried typing Ctrl-Q (XON) hoping there was some software flow control going on that wasn't obvious, but that didn't make a difference. I've tried sending alternating commands in the program, sending blank lines between sending commands, inserting delays between when the commands are sent - but it dies, every time, after processing a few commands.

This is the script I'm currently using:

In fact I am trying this question：

5.4 in 《Cracking the coding interview:189 programming questions and solutions,fifth edition》

the question is:

Given a positive integer, print the next smallest and the next largest number that have the same number of 1 bits in their binary representation.

There is an exact same question, but the answers are all wrong. Moreover, the purpose of my question is to understand why the code cannot pass the ub checker, not just to get ideas for solving the problem.

0

What does "last executed input" mean on leetcode? Is it an example of the input that caused the error, and if so, why are there no warnings from the three compilers, even if I turn on all -Wall?

1

Why is the book wrong? Here is the code from the book:

On pg. 44 of Cracking the Coding Interview, there is the following algo:

I am looking for help in understanding the issue with retrieving certain characters in MYSQL. I have a table which contains international numerals in unicode for each numeral system (e.g. Roman, Hebrew, Thai, Khmer, Lao, etc). The character set of the table is utf8 and collation is utf8_general_ci.

The table is organised as follows:

etc, there are 18 numbers for each numeral system, from 0 to 10, also 50, 100, 500, 1000, 10000.

The MySql query is this: