What is the difference between EDX and the OCW?

1 answer:

7 0

<span>OCW is the material used for various online courses offered by MIT, while EDX is the course itself in which you will be able to receive a certification if you passed all the requirements needed to be accomplished. In this course you are graded based on your knowledge.

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Assume that you are able to do an exhaustive search for the key to an encrypted message at the rate of 100 Million trials per se

Len [333]

Answer:

Following are the solution to this question:

Explanation:

In point 1:

Trials frequency $= \frac{100 \ million }{second}$

calculating the main length of cryptography = 112 bit

$\to 100\ Million = 1 \times 10^8$

calculating the second year value:

$\to 365 \times 24 \times 60 \times 60 =3153600\\\\$

$=3.15 \times 10^7 \ seconds$

Currently, in average , at least half the possible sleeves is being used to verify the encryption process: $2^{111} \ keys$

$\to \frac{2^{111} \time3s 10^6}{3.15 \times 10^7}\approx 8.22 \times 10^{20} \ years$

the total time value will be $8.22 \times 10^{20} \ years$

In point 2:

In cryptography, the common name is Triple DES (3DES), which would be the symmetric-key encrypted communication algorithm (TDEAor Triple DEA), which adds 3 times per block size only with the cryptographic method Data Encryption Standard ( DES).

Algorithm:-

The key package involves four DES keys, K1, K2, and K3, each 56-bit (except parity bits), Triple DES includes. Its encoding algorithm is::

$ciphertext = EK3(DK2(EK1(plaintext)))$

I.e. K1, DES encrypt, K2 decrypt, then K3 encrypt DES.

The reverse is the decryption:

$plaintext = DK1(EK2(DK3(ciphertext)))$

I.e. decrypt by K3, crypt by K2, decrypt by K1.

Every three-bit authentication encrypts a 64-bit block.

Its middle procedure in each situation it's the reverse of the first operation. It improves the strength of the key second option algorithm which offers DES native support with key option 3.

4 0

3 years ago

Fill in the code in the underlined location to display the mouse point location when the mouse is pressed in the pane. pane.setO

Svet_ta [14]

Answer:

The correct option is pane.setOnMouseClicked((e) -> System.out.println(e.getX() + ", " + e.getY()));

Explanation:

As the complete question is not provided, the complete question is attached herewith.

In order to handle the underlined location the way is to get the position using the MouseClicked event which will be activated when the mouse is clicked and then the values of X and Y position will be printed.

pane.setOnMouseClicked((e) -> System.out.println(e.getX() + ", " + e.getY()));

The other options are not correct as the handle used in them is not defined for this purpose.