Which of the four attack models allows the adversary the most power?

Public-key cryptography is more efficient than symmetric-key cryptography.

The property of a secure block cipher in which the relationship of the key and the ciphertext is sufficiently complex is ________.

Which property of a secure hash function is easiest to achieve (that is, hardest to break?)

How many bytes is 512 bits?

The totient of a number n is the number of integers less than n that have a ________ of 1 with n.

The culturally preferred timing of social events such as marriage, parenthood, and retirement is known as 

The socially influenced characteristics by which people define men and women is ________. 

The forward-acting disruptive effect of prior learning on the recall of new information is known as 

The bystander effect states that a particular bystander is less likely to give aid if other people are present.