Podcast
Questions and Answers
What is the term for the original message in encryption?
What is the term for the original message in encryption?
- Encoded message
- Enciphered text
- Algorithm key
- Ciphertext (correct)
In the symmetric cipher model, what is a key requirement for secure encryption?
In the symmetric cipher model, what is a key requirement for secure encryption?
- Public knowledge of the key
- Strong encryption algorithm and a secret key (correct)
- Having access to one or more ciphertexts
- Using multiple keys for encryption
Which term describes the process of converting plaintext to ciphertext?
Which term describes the process of converting plaintext to ciphertext?
- Product operation
- Cryptanalysis
- Deciphering
- Enciphering (correct)
What characterizes the way in which plaintext is processed in encryption?
What characterizes the way in which plaintext is processed in encryption?
Which field encompasses both cryptography and cryptanalysis?
Which field encompasses both cryptography and cryptanalysis?
What type of attack relies on the nature of the algorithm and may involve knowledge of properties of plaintext or sample plaintext-ciphertext pairs?
What type of attack relies on the nature of the algorithm and may involve knowledge of properties of plaintext or sample plaintext-ciphertext pairs?
In which type of cryptanalytic attack does the attacker know or suspect both the plaintext and ciphertext to break the cipher?
In which type of cryptanalytic attack does the attacker know or suspect both the plaintext and ciphertext to break the cipher?
What type of security ensures that even with unlimited computing power, the cipher cannot be broken due to insufficient information in the ciphertext alone?
What type of security ensures that even with unlimited computing power, the cipher cannot be broken due to insufficient information in the ciphertext alone?
Which classical cipher involves replacing letters of the plaintext with other letters or symbols?
Which classical cipher involves replacing letters of the plaintext with other letters or symbols?
What was the earliest known substitution cipher that replaced each letter with the third letter following it, attributed to Julius Caesar?
What was the earliest known substitution cipher that replaced each letter with the third letter following it, attributed to Julius Caesar?
