How Encryption Works
Jan 31, 2023 1:03 PM

How Encryption Works

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Ever wondered how encryption really works?

Encryption is the process of taking plain text, like a text message or email, and scrambling it into an unreadable format — called “ciphertext”. This helps protect the confidentiality of digital data either stored on computer systems or transmitted through a network like the internet.

The encryption process uses an algorithm along with a key to perform the encryption and decryption processes. A key is used to encrypt and decrypt data so that only those who possess it can read the content. Keys are typically generated using algorithms such as RSA or AES (Advanced Encryption Standard). Once encrypted, even if someone was able to intercept your data they would not be able to read it without first having access to your unique key.

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In this Video

0:00 - Introduction

1:12 - Everything is encrypted!

1:57 - Why encrypt?

4:06 - Browser "secure"

6:25 - Cipher information of a connection

9:30 - Pack capture and TCP handshake

10:52 - HTTP, TLS and HTTPS

12:55 - Cheesecake Factory and TLS 1.2

14:13 - Types of encryption - Symmetric

17:19 - Enter Modulus

21:45 - Asymmetric encryption

27:55 - TLS handshake - Client Hello

34:03 - Server Hello

38:39 - Certificate

46:30 - Server Key Exchange

48:48 - Server Hello Done

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