Understanding Symmetric Encryption

What are the two main types of symmetric algorithms used currently?

• Stream cipher

• RSA encryption

• Block cipher

• DES

The process of converting plaintext to ciphertext:

• cryptography

• cyphertext

• encryption

• decryption

Information that is readable without performing any cryptographic operations:

• encryption

• decryption

• decryption

• plaintext

What algorithm was DES derived from?

• Twofish

• Skipjack

• Brooks-Aldeman.

• Lucifer

How many bits is the effective length of the key of the Data Encryption Standard algorithm?

• 168

• 56

• 128

• 64

Symmetric encryption is NOT faster than asymmetric encryption

• True
• False

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