W5L2 - Symmetric Encryption

Question 1

What security does symmetric encryption supply?

Answer 1

Data confidentiality
Data integrity
Authentication

Question 2

Symmetric Encryption Technique

Answer 2

Same key is used to both encrypt and decrypt data

Question 3

What does unconditionally secure mean, relating to symmetric encryption

Answer 3

No matter how much cipher text is available, it will not contain enough info to determine the original

Question 4

What does computationally secure mean, relating to symmetric encryption Computationally secure

Answer 4

Either the cost of breaking the cipher-text exceeds the value of the text or the time needed to break the cipher exceeds useful lifetime of the info

Question 5

No matter how much cipher text is available, it will not contain enough info to determine the original

Answer 5

What does unconditionally secure mean, relating to symmetric encryption

Question 6

Either the cost of breaking the cipher-text exceeds the value of the text or the time needed to break the cipher exceeds useful lifetime of the info

Answer 6

What does mean computationally secure, relating to symmetric encryption Computationally secure