Encryption and Cipher Concepts

The video tutorial introduces cryptography, focusing on the Caesar Cipher and its weaknesses due to letter frequency. It then explores solutions, including using complex math and the One Time Pad method, which is demonstrated as an unbreakable encryption technique.

What is the process of making something cryptic called?

• Deciphering

• Encryption

• Encoding

• Decryption

Which famous cipher uses simple arithmetic operations like shifting?

• Enigma Cipher

• Playfair Cipher

• Caesar Cipher

• Vigenère Cipher

What is the main weakness of the Caesar Cipher?

• Complexity of encryption

• Letter frequency

• Lack of modular arithmetic

• Use of complex numbers

Which mathematical concept is used in the Caesar Cipher to ensure the result is a letter?

• Exponential functions

• Trigonometric functions

• Complex numbers

• Modular arithmetic

What is one proposed solution to the weaknesses of the Caesar Cipher?

• Using more complex mathematics

• Avoiding letter frequency

• Ignoring modular arithmetic

• Using simpler mathematics

What is the key feature of a One Time Pad that makes it unbreakable?

• Using different numbers for each letter

• Ignoring letter frequency

• Using constant shifts

• Reusing the same pad

How does the One Time Pad differ from the Caesar Cipher in terms of shifting?

• It uses the same number for all letters

• It uses different numbers for each letter

• It does not use shifting

• It uses complex numbers

What should be done with a One Time Pad after it is used?

• Share it with others

• Destroy it

• Store it for future reference

• Reuse it for another message

Why is the One Time Pad considered superior to the Caesar Cipher?

• It uses simpler mathematics

• It is unbreakable

• It does not require a key

• It is easier to use

What happens if someone intercepts a message encrypted with a One Time Pad without the pad?

• They have no chance of decrypting it

• They can easily decrypt it

• They can use letter frequency to decrypt it

• They can guess the message