Question

A company that provides a cloud-based storage solution for consumers needs to ensure that users' data is encrypted while it is stored on its premises. Which of the following should be used to accomplish this task?

A. SSL

B. HMAC

C. SHA

D. RC4

Please explain your answer for a thumbs up!

Answer 1

A) HMAC

Explanation:

Hash Message Authentication Code (HMAC) is a mechanism for message authentication using cryptographic hash functions.

cryptography is considered as a key technology to solve security and privacy problems to protect data and applications in cloud from hackers and intruders and to assure our data accuracy and protect the data in cloud environment.

HMAC uses a cryptographic key in conjunction with a hash function.

An HMAC function is used by the message sender to produce a value (the MAC) that is formed by condensing the secret key and the message input.

• The MAC is typically sent to the message receiver along with the message.
• The receiver computes the MAC on the received message using the same key and HMAC function as was used by the sender, and compares the result computed with the received MAC.
• If the two values match, the message has been correctly received, and the receiver is assured that the sender is a member of the community of users that share the key.