COMPUTER FUNDAMENTALS

COMPUTER ETHICS AND SECURITY

CRYPTOGRAPHY AND ENCRYPTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which algorithm uses two keys to encrypt and decrypt?
A
Symmetric algorithm
B
Shift Algorithm
C
Public Algorithm
D
Asymmetric Algorithm
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: -What is asymmetric encryption? Asymmetric encryption uses the notion of a key pair: a different key is used for the encryption and decryption process. One of the keys is typically known as the private key and the other is known as the public key.

Detailed explanation-3: -The RSA algorithm, named for its creators Ron Rivest, Adi Shamir, and Leonard Adleman, is an asymmetric algorithm used all over the world, including in the Secure Sockets Layer (SSL) protocol, which is used to secure many common transactions such as Web and e-mail traffic.

Detailed explanation-4: -Asymmetric encryption uses the public key portion of the asymmetric key and decryption uses the private key portion of the key. Cloud Key Management Service provides functionality to retrieve the public key and functionality to decrypt ciphertext that was encrypted with the public key.

Detailed explanation-5: -The two main uses of asymmetric-key algorithms are public-key encryption and digital signatures. Public-key encryption is a method where anyone can send an encrypted message within a trusted network of users.

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