What does Output feedback (OFB) do:

A block cipher is converted into a stream cipher by generating a keystream blocks, which are then XORed with the plaintext blocks to get the ciphertext

The message is divided into blocks and each block is encrypted separately. This is the most basic mode for symmetric encryption

The cipher text from the current round is XORed with the plaintext from the previous round

A block cipher is converted into a stream cipher by generating a keystream blocks, which are then XORed with the plaintext blocks to get the ciphertext

The cipher text from the current round is XORed with the plaintext for the next round

ECCouncil 212-81 Practice Test 6 - Free Online Exam Questions 201-206

Represents the total number of possible values of keys in a cryptographic algorithm or other security measure, such as a password.

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ECCouncil 212-81 Practice Test 6

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