Question: Consider the Basic CBC-MAC in the module above, with a block cipher having a 256-bit key and 128-bit block length to MAC a 1024-bit message.

Consider the Basic CBC-MAC in the module above, with a block

Consider the Basic CBC-MAC in the module above, with a block cipher having a 256-bit key and 128-bit block length to MAC a 1024-bit message. How many evaluations of the block cipher will be performed to calculate the tag? Explain. [Assume there is no padding]

Characteristics Need 2 shared keys In general can generate additional keys from a single shared key k k1=Fk(1) k2=Fk(2)

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

1.Consider the Basic CBC-MAC in module 4.3, with a block cipher having a 256-bit key and 128-bit block length to MAC a 1024-bit message. How many evaluations of the block cipher will be performed to...

Say CBC- mode is used with a block cipher having a 256-bit key and 128-bit block length to encrypt a 1024-bit message. What is the length of the resulting ciphertext? (Assume a padding scheme that...

Consider the basic CBC-MAC pictured, with a block cipher having a 128 bit key and 64 bit block length to MAC a 512 bit message. How many evaluations of the block cipher need to be performed in order...

Slide 9 I C S Basic CBC - MAC C SPECC The Institute for Cyber Security Variable Length MessageS to get on enge Fks Fks Fk 1 t 1 F ' k 2 Characteristics Need 2 shared keys In general can generate...

can someone solve this Modern workstations typically have memory systems that incorporate two or three levels of caching. Explain why they are designed like this. [4 marks] In order to investigate...

) Consider integer division of one two's-complement binary number by another. Programming languages may vary in the result when one argument is negative. What differing conventions might they be...

answer all questions as instructed below. attend all questions. 4 Computer Vision (a) Explain why such a tiny number of 2D Gabor wavelets as shown in this sequence are so efficient at representing...

answer all questions as instructed below. make sure you have attended all questions .Comparative Architectures (a) Describe the organisation of a two-level branch predictor that makes use of a global...

1. 802.11b security to Secure Access Point (AP) Access includes: a. Service Set Identifier - SSID b. Media Access Control (MAC) Address Filtering c. Wired Equivalent Privacy WEP d. all of the above...

BAD Companys stock price is $20, and the firm has 2 million shares outstanding. You believe you can increase the companys value if you buy it and replace the management. Assume that BAD has a poison...

Which of the following information would be included in the introductory paragraph of the auditors report on internal control over financial reporting if the report is presented separately from the...

The company's common stockholders determine the dividend rate on preferred stock annually. True False

Calculate the density ( mass in kg of 1 m 3 ) of the water vapour component.

=+ a. The capitaloutput ratio is constant.

=+ e. What must the saving rate be to reach the Golden Rule steady state?

=+ d. What will the capitaloutput ratio be at the Golden Rule steady state? (Hint: For the CobbDouglas production function, the capitaloutput ratio is related to the marginal product of capital.)