Module 8

cse365-f2025

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In this eighth module we will learn about crypto, no not the currency, but the math behind secure communication!

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Cryptography

Solve various cryptography challenges, starting from the fundamentals and diving toward advanced concepts! This module assumes that you know how to deal with data encodings.

1

LECTURE: Introduction

2

LECTURE: Symmetric Encryption

3

LECTURE: Key Exchange

4

LECTURE: Asymmetric Encryption

5

LECTURE: Hashing

6

LECTURE: Trust

7

XOR

8

XORing Hex

9

XORing ASCII

10

XORing ASCII Strings

11

One-time Pad

12

One-time Pad Tampering

13

Many-time Pad

14

AES

15

AES-ECB-CPA

16

AES-ECB-CPA-HTTP

17

AES-ECB-CPA-HTTP (base64)

18

AES-ECB-CPA-Suffix

19

AES-ECB-CPA-Prefix

20

AES-ECB-CPA-Prefix-2

21

AES-ECB-CPA-Prefix-Miniboss

22

AES-ECB-CPA-Prefix-Boss

23

AES-CBC

24

AES-CBC Tampering

25

AES-CBC Resizing

26

AES-CBC-POA-Partial-Block

27

AES-CBC-POA-Full-Block

28

AES-CBC-POA-Multi-Block

29

AES-CBC-POA-Encrypt

30

AES-CBC-POA-Encrypt-2

31

DHKE

32

DHKE-to-AES

33

RSA 1

34

RSA 2

35

RSA 3

36

RSA 4

37

RSA Signatures

38

SHA 1

39

SHA 2

40

TLS 1

41

TLS 2