Q. The plain text for the cipher text RRLMWBKASPDH. Given the encryption key
[(17 17 5 | 21 18 21 | 2 2 19)] is –

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Q. The Inverse S-box value for byte stored in cell (D,2)

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Q. Division of (131B6C3) base 16 by (lA2F) base 16 yeilds

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Q. In AES, to make the s-box, we apply the transformation –

b’i = bi XOR b(i+4) XOR b(i+5) XOR b(i+6) XOR b(i+7) XOR ci
What is ci in this transformation?

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Q. The inverse s-box permutation follows -

b’i = b(i+2) XOR b(i+5) XOR b(i+7) XOR di
Here di is –

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Q. In the DES algorithm the Round Input is 32 bits, which is expanded to 48 bits via ______________

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Q. Using Differential Crypt-analysis, the minimum computations required to decipher the DES algorithm is-

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Q. Using SDES, the Plaintext for the Ciphertext 00001111, given that the key is 1111111111 is,

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Q. A substitution cipher substitutes one symbol with

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Q. An asymmetric-key (or public-key) cipher uses

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Q. A straight permutation cipher or a straight P-box has the same number of inputs as

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Q. We use Cryptography term to transforming messages to make them secure and immune to

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Q. The man-in-the-middle attack can endanger the security of the Diffie-Hellman method if two parties are not

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Q. In Asymmetric-Key Cryptography, the two keys, e and d, have a special relationship to

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Q. The shift cipher is sometimes referred to as the

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Q. The substitutional cipers are

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Q. The heart of Data Encryption Standard (DES), is the

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Q. DES stands for

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Q. The cryptography algorithms (ciphers) are divided into

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Q. A substitution cipher replaces one symbol with

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