IAS

Question 1

is the practice and study of techniques for
securing communication and data in the presence of third parties
(adversaries).

Answer 1

Cryptography

Question 2

Uses the same key for both encryption and decryption.
Fast and efficient, suitable for encrypting large amounts of data.
sharing the secret key securely with the recipient can be challenging
* Used in data storage and bulk data transfer.

Answer 2

Symmetric Encryption

Question 3

• Involves two keys a public key (used for encryption) and a
  private key (used for decryption).
  Example: RSA (Rivest-Shamir-Adleman), ECC (Elliptic-Curve
  Cryptography), and DSA (Digital Signature Algorithm).
• Enhances security as the private key does not need to be
  shared.
• Slower and computationally more intensive compared to
  symmetric encryption.
• Common in secure communications like SSL/TLS and digital
  certificates.

Answer 3

Asymmetric Encryption

Question 4

is the process of converting plaintext into ciphertext
using an algorithm and a key.

Answer 4

Encryption

Question 5

is reverting the ciphertext back into plaintext using
the appropriate key.

Answer 5

Decryption

Question 6

electronic signatures that verify the
authenticity of a digital message or document. Provide integrity
and non-repudiation.

Answer 6

Digital Signatures

Question 7

A symmetric key encryption standard widely used for secure data
encryption.
Known for its strength, speed, and efficiency. Used in both software
and hardware implementations.

Answer 7

AES (Advanced Encryption Standard)

Question 8

One of the most widely used asymmetric encryption algorithms.
Utilized in secure data transmission, digital signatures, and SSL/TLS
encryption for internet security.

Answer 8

RSA (Rivest-Shamir-Adleman)

Question 9

• Uses elliptic curves to create smaller, more efficient cryptographic
  keys.
• The same level of security as RSA but with shorter key lengths,
  making it ideal for mobile devices and IoT applications.

Answer 9

ECC (Elliptic-Curve Cryptography)

Question 10

encrypts sensitive data to prevent
unauthorized access, even if data is intercepted or stolen.

Answer 10

Data Protection

Question 11

cryptography defends against
common threats like man-in-the-middle attacks, data breaches,
and phishing scams.

Answer 11

Preventing Cyber Attacks

Question 12

proper management and storage of
cryptographic keys for data security.
* Importance of using strong keys and regularly updating them to
prevent vulnerabilities.

Answer 12

Key Management

Question 13

some older cryptographic algorithms (like
MD5 and SHA-1) are considered weak due to vulnerabilities
and should be avoided.

Answer 13

Weak Algorithms