Nama : Sultan Chairul

Nim : 2581484737

1. What is the main difference between symmetric and asymmetric encryption?

Answer :
The main difference between symmetric and asymmetric encryption is the number of keys used. Symmetric encryption uses a single key for both encryption and decryption, meaning the sender and receiver must share the same secret key. It is generally faster and more efficient for encrypting large amounts of data. Asymmetric encryption uses two keys: a public key for encryption and a private key for decryption. This method is more secure for communication and key exchange because the private key remains secret.

2. Explain what “data in transit” and “data at rest” mean, and why both need to be encrypted.

Answer :
Data in transit refers to data that is being transferred between devices, systems, or networks, such as information sent over the internet. Data at rest refers to data that is stored on devices, databases, or servers. Both types of data need to be encrypted to protect sensitive information from unauthorized access. Encrypting data in transit prevents attackers from intercepting communications, while encrypting data at rest protects stored information if a device or server is stolen, hacked, or accessed without permission.

3. Why should a business store hashed versions of user passwords instead of the passwords themselves?

Answer :
A business should store hashed versions of user passwords because hashing converts passwords into unreadable values that are extremely difficult to reverse. If hackers gain access to the database, they will not immediately know the actual passwords. Storing passwords in plain text is very risky because attackers can directly use them to access user accounts. Hashing improves security and helps protect user information even if a data breach occurs.

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