Security Quiz (General Revision)

Which of the following is a property of a cryptographic system (Select all that apply)

• Authentication

• Confidentiality

• Reality

• Availability

Which of the following is implemented to execute the confidentiality in the cryptographic system

• Encryption

• Mathematical Background

• Euler Theorem

• Authentication

What is the difference between block cipher and stream cipher

• block cipher is easier

• block cipher is faster

• stream cipher generate a key for each message

• None of the above

DES is an example of

• Symmetric Encryption

• Assymmetric Encryption

• All of the above

• None of the above

The problem of Symmetric Encryption is

• Complexity

• Key Exchange

• Time

• None of the above

Which of the following is NOT a mode of operation in block cipher

• ECB

• CBC

• OFB

• GCD

to overcome the problem of the different size of the last message block, we use

• reverse engineering

• encryption

• padding

• segmentation

RSA is an example of

• Symmetric Encryption

• Assymetric Encryption

• All of the above

• None of the above

RC4 is an example of

• Block Cipher

• Stream Cipher

• All of the above

• None of the above

Left Feedback Shift Register key generation is

• periodic with a relatively smaller Period

• periodic with a relatively large period

• non periodic

• None of the above