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WorksheetsChapter 9
Total questions: 9
Worksheet time: 5mins
Which goal of cryptography ensures that the encoded data remains unaltered during transmission?
Confidentiality
Ensuring data integrity
Authentication
Non-repudiation
What is cipher text?
The output of the encryption algorithm
The message that is readable or understandable
The key used for encryption
The input for the decryption algorithm
What is the purpose of using a key in encryption algorithms?
To ensure data integrity
To share information with others
To alter data
To generate cipher text
What are the key lengths used in AES?
32 bits, 64 bits, 128 bits
128 bits, 192 bits, 256 bits
256 bits, 512 bits, 1024 bits
64 bits, 128 bits, 256 bits
Which encryption method is commonly used in secure messaging apps like WhatsApp?
Symmetric encryption
Asymmetric encryption
Key exchange
Hash function
What is the primary purpose of the DSA algorithm?
Creating a public and private key
Secure information exchange online
Verifying electronic signatures
Creating a shared secret key
What does PKI stand for in the context of secure communications and transactions?
Protected Key Integration
Private Key Infrastructure
Public Key Infrastructure
Personal Key Identification
Which type of PKI certificate is used to secure downloadable software?
SSL/TLS certificates
Code signing certificates
Identity certificates
Encryption certificates
Which algorithms isn’t commonly used for generating a digital signature from message and produces a 128-bit hash value?
MD2
MD4
MD5
SHA-256
