What type of algorithm uses the same key to encryp and decrypt data?

The correct answer is A. a symmetric algorithm. Symmetric encryption algorithms use a single shared secret key for both encryption and decryption. Both the sender and receiver must possess the same key. Common examples include AES, DES, and 3DES. This contrasts with asymmetric (public-key) algorithms, which use a…

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Aa symmetric algorithm
Ban asymetric algorithm
Ca Public Key infrastructure algorithm
Dan IP Security algorithm

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(20 responses)

A
90% (18)
C
5% (1)
D
5% (1)

Explanation

Symmetric encryption algorithms use a single shared secret key for both encryption and decryption. Both the sender and receiver must possess the same key. Common examples include AES, DES, and 3DES. This contrasts with asymmetric (public-key) algorithms, which use a mathematically related key pair - a public key to encrypt and a private key to decrypt. PKI is an infrastructure framework that manages asymmetric keys, and IPSec is a protocol suite for securing IP communications (which can use either type), so neither is a category of encryption algorithm itself.

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#symmetric encryption#cryptography#encryption algorithms#key management

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