Which of the following statements are true.i) In the CBC mode, the plaintext block is XORed with previous ciphertext block before encryption.ii) The CTR mode does not require an Initialization Vectoriii) The last block in the CBC mode uses an Initialization Vectoriv) In CBC mode repetitions in plaintext do not show up in ciphertext

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Cryptography principles: These are the fundamental concepts and techniques used to protect data and secure communication.  Some principles include: Confidentiality Integrity Authentication Non-repudiation Key management Asymmetric cryptography: Also known as public-key cryptography, this is a key component of blockchain technology. It allows anyone to verify the integrity of transactions and protect funds from hackers. Hashing: This is a fundamental concept in cryptography that is used in various technologies, including blockchain, digital signatures, data integrity, and password... Show more

Which of the following statements are true.<br />i) In the CBC mode, the plaintext block is XORed with previous ciphertext block before encryption.<br />ii) The CTR mode does not require an Initialization Vector<br />iii) The last block in the CBC mode uses an Initialization Vector<br />iv) In CBC mode repetitions in plaintext do not show up in ciphertext