Information Assurance and Security 1 Midterm

Which goal of cryptography is achieved by using hash functions to verify that a file has not been altered since it was created?

• Confidentiality

• Availability

• Authentication

• Integrity

What is the technical term for the scrambled, unreadable result after an encryption algorithm has been applied to the readable message?

• Plaintext

• Key Stream

• Ciphertext

• Hash

The security of a modern cryptosystem relies primarily on the secrecy and complexity of the key, even if the algorithm is publicly known. This concept aligns with:

• The CIA Triad

• The principle of Least Privilege

• Kerckhoffs's Principle

• The Bell-LaPadula Model

The Caesar Cipher is an example of which type of classical cryptographic technique?

• Transposition Cipher

• Substitution Cipher

• Block Cipher

• Stream Cipher

Classical relies on computers; Modern relies on manual methods. Which is correct?

• Classical relies on computers; Modern relies on manual methods.

• Classical focuses on confidentiality; Modern focuses on integrity.

• Classical relies on the secrecy of the algorithm; Modern relies on the secrecy of the key.

• Classical uses symmetric keys, Modern uses asymmetric keys.

Which type of encryption is defined using a single, shared secret key for both encryption and decryption?

• Asymmetric Encryption

• Public-Key Cryptography

• Symmetric Encryption

• Digital Signature

The Advanced Encryption Standard (AES) is a widely used example of which type of algorithm?

• Asymmetric Algorithm

• Hash Function

• Symmetric Encryption Algorithm

• Digital Signature Scheme

In an Asymmetric Encryption system, which key must be kept secret and is used by the owner to decrypt messages sent to them?

• The Public Key

• The Session Key

• The Private Key

• The Symmetric Key

What is the primary role of Asymmetric Encryption (e.g., RSA) in a hybrid security session?

• To encrypt all bulk data because it is the most secure.

• To provide the fixed-size output for hashing.

• To securely distribute the faster Symmetric Session Key.

• To prevent Denial of Service attacks.

A Digital Signature is created by encrypting the document's hash using the sender's Private Key. This process primarily enforces which cryptographic goal?

• Confidentiality

• Non-repudiation

• Availability

• Key Management