Seal library official example: levels.cpp parsing

This code is mainly about modulus switching. Simply put, the function is to reduce the noise of the ciphertext. This should be in the BGV scheme, but the official example is BFV. There is no such process in BFV. It embeds the modulo switching into the multiplication operation. At the end of the code, it is said that BFV does not need to set the ...

Posted by coalgames on Thu, 01 Dec 2022 20:18:14 +0300

binary search tree

binary search tree What is a Binary Search Tree? A binary search tree is first a binary tree. This binary tree has such a feature that all nodes in the left subtree are smaller than the root node, and all nodes in the right subtree are larger than the root node. And the left and right subtrees also satisfy this condition A binary se ...

Posted by Invincible on Thu, 01 Dec 2022 19:52:09 +0300

Spring Security: Basics

1. Getting to know Spring Security first1.1 Spring Security concept  Spring Security is a security framework implemented by Spring using AOP thinking and based on servlet filters. It provides a complete authentication mechanism and method-level authorization functions. It is a very good permission management framework. Spring S ...

Posted by msnhockey on Wed, 30 Nov 2022 20:01:39 +0300

js all this points and throttling anti-shake

All this points to Ordinary function heavy this point, wind The method this in the object points to, the object (is the this pointing of the method in the object, not the this pointing in the object, the object does not have this pointing) The this point in the event binding, the source of the bound event this in the timer points to, wind The t ...

Posted by levidyllan on Wed, 30 Nov 2022 08:52:21 +0300

Python crawls m3u8 video (multithreading)

Excerpt from: https://www.cnblogs.com/python147/p/14511627.html 1 Introduction The text and pictures in this article come from the Internet and are for learning and communication purposes only. They do not have any commercial use. If you have any questions, please contact us in time for resolution. PS: If you need Python learning materials, you ...

Posted by DarkSuperHero on Wed, 30 Nov 2022 04:27:31 +0300

angr_ctf - learn angr from 0: angr introduction and core concepts

When I was learning angr, I first read the papers published by the developers on IEEE IEEE Xplore Full-Text PDF: This article describes the background and methods of automated vulnerability mining, and introduces the architecture and core modules of angr. It is very classic and worth reading. Then, I read the angr official documentation and API ...

Posted by dionsweet on Tue, 29 Nov 2022 12:38:06 +0300

Digital Image Processing--Image Filtering

Digital Image Processing – Image Filtering 1 main content A. Select the experimental image for the experiment, complete image reading and display, and add noise to the image; B. Write the filter functions of three image filters; Among them, the general specific implementation steps of mean filtering are: 1. Select a (2n+l) x (2n+l) wind ...

Posted by jd57 on Tue, 29 Nov 2022 05:01:34 +0300

FastAPI from entry to actual combat - setting Cookie and Header parameters

The previous article recorded the content related to front-end authentication. This note mainly records the content related to the request header, including a request message analysis of http, fastapi setting cookie and parameters, fastapi setting request header parameters, etc. HTTP Request The HTTP request message is divided into three pa ...

Posted by jaymoore_299 on Tue, 29 Nov 2022 02:52:41 +0300

Xuanzi Java Basic Notes 2

User interaction Basic Scanner package CH02_JAVAProcessControl; //Basic Scanner import java.util.Scanner; //Guide package public class XZ01_UserInteraction { public static void main(String[] args) { Scanner input = new Scanner(System.in); //Create a Scanner object System.out.println("Please enter 1"); if (input.h ...

Posted by marsooka on Mon, 28 Nov 2022 07:52:35 +0300

Detailed JDBC usage

Introduction to JDBC Java Database Connectivity, (Java Database Connectivity, referred to as JDBC) is an application programming interface used in the Java language to regulate how client programs access the database, and provides methods such as querying and updating data in the database. JDBC is also a trademark of Sun Microsystems. We usua ...

Posted by naomi385 on Sun, 27 Nov 2022 20:52:51 +0300