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Which of the following block cipher modes XORs a plaintext b…

Which of the following block cipher modes XORs a plaintext block with the previous ciphertext block (or an IV) before encrypting it?

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If the initial state is 0110, what is the period of the LFSR…

If the initial state is 0110, what is the period of the LFSR?

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After the round 1 SubBytes layer.

After the round 1 SubBytes layer.

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What is the purpose of a security proof?

What is the purpose of a security proof?

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¬B1{“version”:”1.1″,”math”:”\neg B_1″}

¬B1{“version”:”1.1″,”math”:”\neg B_1″}

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Which of the following best describes the Salsa20 stream cip…

Which of the following best describes the Salsa20 stream cipher?

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How many possible answers to each quiz question would be req…

How many possible answers to each quiz question would be required so that a 16-question quiz has at least 128 bits of entropy?

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Given bits b1 and b2, what does b1 ⊕ b2 produce?

Given bits b1 and b2, what does b1 ⊕ b2 produce?

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How many questions would be required so that a quiz has 128…

How many questions would be required so that a quiz has 128 bits of entropy?

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After the round 1 ShiftRows layer.

After the round 1 ShiftRows layer.

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