COMPUTER FUNDAMENTALS

COMPUTER ETHICS AND SECURITY

CRYPTOGRAPHY AND ENCRYPTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
____ (also known as secret-key encryption, pre-shared key, or private-key encryption) uses only one key to encrypt and decrypt data.
A
Symmetric-key encryption
B
Asymmetric-key encryption
C
Hashing
D
None of the above
Explanation: 

Detailed explanation-1: -Asymmetric cryptography, also known as public-key cryptography, is a process that uses a pair of related keys–one public key and one private key–to encrypt and decrypt a message and protect it from unauthorized access or use.

Detailed explanation-2: -Symmetric encryption is also called secret key encryption, and it uses just one key, called a shared secret, for both encrypting and decrypting.

Detailed explanation-3: -In symmetric encryption, there is only one key, and all parties involved use the same key to encrypt and decrypt information.

Detailed explanation-4: -Symmetric, or secret key encryption, uses a single key for both encryption and decryption. Symmetric key encryption is used for encrypting large amounts of data efficiently. 256-bit AES keys are symmetric keys.

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