CB3491 CRYPTOGRAPHY AND CYBER SECURITY

The process of converting plain text into cipher text is _________________

• decryption
• encoding
• hashing
• encryption

Symmetric encryption is also known as _______________

• public key encryption
• asymmetric encryption
• hash-based encryption
• secret key encryption

The Caesar cipher is a _________ cipher that has a key of 3.

• transposition
• block
• additive

• stream

The ___________ cipher reorders the plain text characters to create a cipher text.

• substitution
• hashing
• transposition
• encryption

Which of the following stage of cryptography are the non readable encrypted data?

• key
• hash
• plaintext
• ciphertext

Which type of encryption uses the same key for both encryption and decryption?

• Asymmetric encryption
• Hashing
• Base64 encoding
• Symmetric encryption

Which of the following is not a characteristic of a good encryption algorithm?

• Confidentiality

• Integrity

• Availability

• Authenticity

Which of the following is not a type of attack on  encryption?

• Brute force attack

• Dictionary attack

• Collision attack

• Compression attack

Which of the following is a type of attack on encryption that tries every possible key combination?

• Brute force attack

• Dictionary attack

• Collision attack

• Rainbow table attack

Which of the following is not a type of cipher?

• Substitution cipher

• Transposition cipher

• Vigenere cipher

• RSA cipher