共通鍵暗号方式と公開鍵暗号方式の仕組みをわかりやすく解説【情報I基礎】4-12 暗号化の仕組み

This is a lesson video for [High School Information Science I] 4-12: How Encryption Works. We've used concrete examples (Caesar cipher and RSA) to clearly explain the mechanisms and differences between symmetric key cryptography and public key cryptography. 🎉 📌 [Apology] Regarding symmetric key cryptography In the video (from 3:36), I referred to the key used in symmetric key cryptography as a "private key." I should have explained it as a "symmetric key." I apologize for the inaccurate information. Thank you to @user-em2wg3xz2r for pointing this out. ⭐Learn IT for free and in a fun way! That's why I make these videos! 😁 →Please support us by subscribing, liking, and sharing! ✨✨ 🌸Subscribe to our channel here! https://www.youtube.com/c/SekaChan?su... 👀Related sites and videos here! ▼Class Notes and Complete Strategy Sheet (PDF Materials) https://sekachan.net/info1-basic/ ▼Previous Video    • パスワード・PINコード・SMS認証の根本的な違いやファイアウォールの仕組み【情報I...   ▼Next Video    • デジタル署名と電子認証とは何かと仕組みをわかりやすく解説【情報I基礎】4-13 デジ...   ▼Information Science I Review Mind Map    • 【この1本でOK】情報I全範囲をマインドマップで総復習   ▼Information Science I Basic Course    • 【共通テスト対策】高校情報Ⅰ基礎講座（全範囲）   ▼Information Science I Common Test Preparation Course    • 【共通テスト8割突破】情報Ⅰ演習講座   💡Chapter 00:00 This Time's Topic 00:32 What is Encryption? 01:00 Symmetric Key Cryptography 05:00 Public Key Cryptography 08:40 Review Question 09:33 Summary Correction: 03:39 I should have explained this as "shared key" instead of "private key." Please see the description or comments 📌. 🙋‍♂️Profile [Sekachan Sugawara] Graduated from the Graduate School of Information Science and Engineering, Tokyo Institute of Technology 5.5 years as a cram school instructor during undergraduate and graduate school Planned and conducted IT and programming seminars as an IT training instructor Received the "Instructor of the Year" (Japan's Highest Satisfaction Rating) and "Java Instructor Award" from Oracle for four consecutive years I love the moment when someone says, "I get it!" and when they find learning enjoyable. I started YouTube because I wanted to spread free learning (a place where people can learn for free). Let's have fun learning and growing together! 📳X (formerly Twitter) https://x.com/SekaChanIT 🎵Sound provided by DOVA-SYNDROME https://dova-s.jp/ ※May not be used in some videos #InformationI #CommonTest #SekaChan'sInformationIBasicCourse #InformationScience #HighSchoolInformationScience #FundamentalInformationTechnologist #ITPassport