COMPUTER FUNDAMENTALS

COMPUTER ETHICS AND SECURITY

CRYPTOGRAPHY AND ENCRYPTION

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Which of the following is used in conjunction with the assumption that the output of a cryptographic function should be considerably different from the corresponding plaintext input?

A	Confusion
B	Obfuscation
C	Collision
D	Diffusion

Explanation:

Detailed explanation-1: -Asymmetric Key Algorithms The Diffie-Hellman algorithm is mostly used for key exchange. Although symmetric key algorithms are fast and secure, key exchange is always a problem. You have to figure out a way to get the private key to all systems. The Diffie-Hellman algorithm helps with this.

Detailed explanation-2: -If we need to randomize an encryption scheme, we commonly use an initialization vector or an IV. This is a type of nonce that provides randomization for this encryption process.

Detailed explanation-3: -In symmetric encryption the same key is used for encryption and decryption. It is therefore critical that a secure method is considered to transfer the key between sender and recipient.

Detailed explanation-4: -In cryptography, the number of bits in a key used by a cryptographic algorithm is referred to as a key size or key length. The key size determines the maximum number of combinations required to break the encryption algorithm, therefore typically a longer key means stronger cryptographic security.

There is 1 question to complete.